/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 18:58:37,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 18:58:37,721 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 18:58:37,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 18:58:37,777 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 18:58:37,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 18:58:37,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 18:58:37,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 18:58:37,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 18:58:37,800 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 18:58:37,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 18:58:37,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 18:58:37,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 18:58:37,806 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 18:58:37,808 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 18:58:37,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 18:58:37,813 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 18:58:37,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 18:58:37,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 18:58:37,829 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 18:58:37,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 18:58:37,832 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 18:58:37,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 18:58:37,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 18:58:37,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 18:58:37,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 18:58:37,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 18:58:37,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 18:58:37,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 18:58:37,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 18:58:37,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 18:58:37,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 18:58:37,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 18:58:37,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 18:58:37,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 18:58:37,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 18:58:37,867 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 18:58:37,867 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 18:58:37,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 18:58:37,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 18:58:37,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 18:58:37,873 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 18:58:37,894 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 18:58:37,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 18:58:37,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 18:58:37,898 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 18:58:37,898 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 18:58:37,899 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 18:58:37,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 18:58:37,899 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 18:58:37,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 18:58:37,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 18:58:37,900 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 18:58:37,901 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 18:58:37,901 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 18:58:37,901 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 18:58:37,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 18:58:37,902 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 18:58:37,902 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 18:58:37,902 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 18:58:37,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:58:37,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 18:58:37,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 18:58:37,903 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 18:58:37,904 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 18:58:38,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 18:58:38,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 18:58:38,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 18:58:38,356 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 18:58:38,357 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 18:58:38,358 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product36.cil.c [2021-02-21 18:58:38,439 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2ccb1eda/cbf80e760a234b5a9b3286afc0fca108/FLAG60f40993c [2021-02-21 18:58:39,110 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 18:58:39,111 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product36.cil.c [2021-02-21 18:58:39,124 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2ccb1eda/cbf80e760a234b5a9b3286afc0fca108/FLAG60f40993c [2021-02-21 18:58:39,379 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2ccb1eda/cbf80e760a234b5a9b3286afc0fca108 [2021-02-21 18:58:39,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 18:58:39,396 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 18:58:39,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 18:58:39,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 18:58:39,406 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 18:58:39,407 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:58:39" (1/1) ... [2021-02-21 18:58:39,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@615f06ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:58:39, skipping insertion in model container [2021-02-21 18:58:39,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:58:39" (1/1) ... [2021-02-21 18:58:39,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 18:58:39,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 18:58:39,711 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_product36.cil.c[1281,1294] [2021-02-21 18:58:39,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:58:39,866 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 18:58:39,894 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_product36.cil.c[1281,1294] [2021-02-21 18:58:40,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:58:40,045 INFO L208 MainTranslator]: Completed translation [2021-02-21 18:58:40,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:58:40 WrapperNode [2021-02-21 18:58:40,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 18:58:40,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 18:58:40,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 18:58:40,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 18:58:40,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:58:40" (1/1) ... [2021-02-21 18:58:40,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:58:40" (1/1) ... [2021-02-21 18:58:40,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:58:40" (1/1) ... [2021-02-21 18:58:40,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:58:40" (1/1) ... [2021-02-21 18:58:40,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:58:40" (1/1) ... [2021-02-21 18:58:40,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:58:40" (1/1) ... [2021-02-21 18:58:40,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:58:40" (1/1) ... [2021-02-21 18:58:40,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 18:58:40,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 18:58:40,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 18:58:40,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 18:58:40,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:58:40" (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 [2021-02-21 18:58:40,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 18:58:40,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 18:58:40,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 18:58:40,256 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 18:58:40,256 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 18:58:40,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 18:58:40,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 18:58:40,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 18:58:40,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 18:58:40,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 18:58:40,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 18:58:40,258 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 18:58:40,258 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 18:58:40,258 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 18:58:40,258 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 18:58:40,258 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 18:58:40,258 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 18:58:40,259 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 18:58:40,259 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 18:58:40,259 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 18:58:40,259 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 18:58:40,259 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 18:58:40,259 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 18:58:40,260 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 18:58:40,260 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 18:58:40,260 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 18:58:40,260 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 18:58:40,260 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 18:58:40,260 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 18:58:40,261 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 18:58:40,261 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 18:58:40,261 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 18:58:40,261 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 18:58:40,261 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 18:58:40,261 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 18:58:40,262 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 18:58:40,262 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 18:58:40,262 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 18:58:40,262 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 18:58:40,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:58:40,262 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 18:58:40,263 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 18:58:40,263 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 18:58:40,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 18:58:40,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 18:58:40,263 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 18:58:40,263 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 18:58:40,263 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 18:58:40,264 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 18:58:40,264 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 18:58:40,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 18:58:40,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 18:58:40,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 18:58:40,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 18:58:40,264 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 18:58:40,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 18:58:40,265 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 18:58:40,265 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 18:58:40,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 18:58:40,265 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 18:58:40,265 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 18:58:40,266 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 18:58:40,266 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 18:58:40,266 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 18:58:40,266 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 18:58:40,266 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 18:58:40,266 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 18:58:40,267 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 18:58:40,267 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 18:58:40,267 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 18:58:40,267 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 18:58:40,267 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 18:58:40,267 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 18:58:40,268 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:58:40,268 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 18:58:40,268 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 18:58:40,268 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 18:58:40,268 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 18:58:40,269 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 18:58:40,269 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 18:58:40,269 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 18:58:40,269 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 18:58:40,269 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 18:58:40,269 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 18:58:40,269 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 18:58:40,270 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 18:58:40,270 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 18:58:40,270 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 18:58:40,270 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 18:58:40,270 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 18:58:40,270 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 18:58:40,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 18:58:40,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 18:58:40,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 18:58:41,438 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 18:58:41,438 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 18:58:41,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:58:41 BoogieIcfgContainer [2021-02-21 18:58:41,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 18:58:41,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 18:58:41,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 18:58:41,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 18:58:41,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 06:58:39" (1/3) ... [2021-02-21 18:58:41,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2cb227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:58:41, skipping insertion in model container [2021-02-21 18:58:41,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:58:40" (2/3) ... [2021-02-21 18:58:41,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2cb227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:58:41, skipping insertion in model container [2021-02-21 18:58:41,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:58:41" (3/3) ... [2021-02-21 18:58:41,451 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product36.cil.c [2021-02-21 18:58:41,458 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 18:58:41,463 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 18:58:41,483 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 18:58:41,508 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 18:58:41,508 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 18:58:41,508 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 18:58:41,509 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 18:58:41,509 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 18:58:41,509 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 18:58:41,509 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 18:58:41,509 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 18:58:41,533 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states. [2021-02-21 18:58:41,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-21 18:58:41,553 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:58:41,554 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] [2021-02-21 18:58:41,555 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:58:41,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:58:41,561 INFO L82 PathProgramCache]: Analyzing trace with hash -251930548, now seen corresponding path program 1 times [2021-02-21 18:58:41,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:58:41,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426187184] [2021-02-21 18:58:41,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:58:41,654 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:58:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:41,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:41,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:41,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:41,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:42,283 WARN L202 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:58:42,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:58:42,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:42,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:42,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:42,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:58:42,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:42,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:42,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:42,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:58:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:42,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:42,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:42,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:58:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:42,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:42,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:42,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:58:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:42,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:42,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:42,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 18:58:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:42,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:42,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:42,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:58:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:42,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:42,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:42,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:58:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:42,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:42,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:42,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:58:42,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426187184] [2021-02-21 18:58:42,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:58:42,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 18:58:42,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214265291] [2021-02-21 18:58:42,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 18:58:42,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:58:42,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 18:58:42,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:58:42,589 INFO L87 Difference]: Start difference. First operand 314 states. Second operand 3 states. [2021-02-21 18:58:44,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:58:44,127 INFO L93 Difference]: Finished difference Result 476 states and 564 transitions. [2021-02-21 18:58:44,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 18:58:44,130 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-21 18:58:44,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:58:44,146 INFO L225 Difference]: With dead ends: 476 [2021-02-21 18:58:44,146 INFO L226 Difference]: Without dead ends: 298 [2021-02-21 18:58:44,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:58:44,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-02-21 18:58:44,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 256. [2021-02-21 18:58:44,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2021-02-21 18:58:44,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 276 transitions. [2021-02-21 18:58:44,330 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 276 transitions. Word has length 158 [2021-02-21 18:58:44,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:58:44,331 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 276 transitions. [2021-02-21 18:58:44,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 18:58:44,332 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 276 transitions. [2021-02-21 18:58:44,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-21 18:58:44,336 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:58:44,337 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] [2021-02-21 18:58:44,337 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 18:58:44,337 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:58:44,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:58:44,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1795389272, now seen corresponding path program 1 times [2021-02-21 18:58:44,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:58:44,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366765417] [2021-02-21 18:58:44,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:58:44,344 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:58:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:44,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:44,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:44,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:44,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:44,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:44,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:44,826 WARN L202 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:58:44,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:58:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:44,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:44,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:44,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:58:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:44,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:44,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:44,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:58:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:44,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:44,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:44,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:58:44,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:44,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:44,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:44,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:58:44,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:44,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:44,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:44,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-21 18:58:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:44,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:44,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:44,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:58:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:44,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:44,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:44,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 18:58:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:44,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:44,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:44,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:58:44,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366765417] [2021-02-21 18:58:44,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:58:44,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 18:58:44,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010097998] [2021-02-21 18:58:44,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 18:58:44,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:58:44,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 18:58:44,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:58:44,971 INFO L87 Difference]: Start difference. First operand 256 states and 276 transitions. Second operand 4 states. [2021-02-21 18:58:45,697 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:58:46,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:58:46,674 INFO L93 Difference]: Finished difference Result 379 states and 424 transitions. [2021-02-21 18:58:46,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 18:58:46,674 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-21 18:58:46,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:58:46,678 INFO L225 Difference]: With dead ends: 379 [2021-02-21 18:58:46,678 INFO L226 Difference]: Without dead ends: 281 [2021-02-21 18:58:46,681 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 [2021-02-21 18:58:46,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-02-21 18:58:46,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 246. [2021-02-21 18:58:46,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2021-02-21 18:58:46,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 263 transitions. [2021-02-21 18:58:46,819 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 263 transitions. Word has length 159 [2021-02-21 18:58:46,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:58:46,820 INFO L480 AbstractCegarLoop]: Abstraction has 246 states and 263 transitions. [2021-02-21 18:58:46,820 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 18:58:46,820 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 263 transitions. [2021-02-21 18:58:46,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-21 18:58:46,823 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:58:46,823 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] [2021-02-21 18:58:46,823 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 18:58:46,824 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:58:46,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:58:46,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1756115113, now seen corresponding path program 1 times [2021-02-21 18:58:46,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:58:46,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252435895] [2021-02-21 18:58:46,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:58:46,829 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:58:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:46,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:46,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:46,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:46,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:46,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:46,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:46,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:46,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:46,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:46,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:58:46,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:46,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:47,254 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:58:47,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:58:47,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:47,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:47,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:47,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:58:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:47,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:47,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:47,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:58:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:47,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:47,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:47,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:58:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:47,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:47,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:47,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:47,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:58:47,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:47,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:58:47,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:58:47,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:47,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:47,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:47,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 18:58:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:47,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:47,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:47,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 18:58:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:47,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:47,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:47,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-21 18:58:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:47,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:47,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:47,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-21 18:58:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:47,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:47,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:47,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:58:47,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252435895] [2021-02-21 18:58:47,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:58:47,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 18:58:47,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759410498] [2021-02-21 18:58:47,444 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 18:58:47,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:58:47,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 18:58:47,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:58:47,450 INFO L87 Difference]: Start difference. First operand 246 states and 263 transitions. Second operand 10 states. [2021-02-21 18:58:48,173 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:58:48,620 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:58:48,998 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:58:49,380 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:58:49,732 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:58:50,126 WARN L202 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:58:51,198 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:58:53,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:58:53,550 INFO L93 Difference]: Finished difference Result 670 states and 775 transitions. [2021-02-21 18:58:53,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 18:58:53,550 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-21 18:58:53,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:58:53,556 INFO L225 Difference]: With dead ends: 670 [2021-02-21 18:58:53,556 INFO L226 Difference]: Without dead ends: 539 [2021-02-21 18:58:53,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-21 18:58:53,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2021-02-21 18:58:53,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 436. [2021-02-21 18:58:53,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2021-02-21 18:58:53,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 481 transitions. [2021-02-21 18:58:53,786 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 481 transitions. Word has length 172 [2021-02-21 18:58:53,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:58:53,787 INFO L480 AbstractCegarLoop]: Abstraction has 436 states and 481 transitions. [2021-02-21 18:58:53,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 18:58:53,787 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 481 transitions. [2021-02-21 18:58:53,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-21 18:58:53,791 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:58:53,791 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] [2021-02-21 18:58:53,792 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 18:58:53,792 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:58:53,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:58:53,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1318568750, now seen corresponding path program 1 times [2021-02-21 18:58:53,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:58:53,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861688224] [2021-02-21 18:58:53,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:58:53,796 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:58:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:53,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:53,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:53,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:53,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:53,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:53,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:53,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:53,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:53,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:53,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:53,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:53,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:53,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:53,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:53,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:53,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:54,288 WARN L202 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:58:54,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:58:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:54,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:54,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:54,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:54,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:58:54,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:58:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:54,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:54,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:54,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:58:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:54,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:54,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:54,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:58:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:54,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:54,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:54,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:58:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:54,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:54,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:54,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 18:58:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:54,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:54,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:54,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 18:58:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:54,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:54,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:54,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-02-21 18:58:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:54,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:54,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:54,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:54,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:54,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:54,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:54,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-02-21 18:58:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:54,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:54,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:54,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:58:54,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861688224] [2021-02-21 18:58:54,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:58:54,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:58:54,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950641261] [2021-02-21 18:58:54,461 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:58:54,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:58:54,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:58:54,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:58:54,462 INFO L87 Difference]: Start difference. First operand 436 states and 481 transitions. Second operand 9 states. [2021-02-21 18:58:55,037 WARN L202 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:58:56,907 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:58:57,307 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:58:57,736 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:58:58,158 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:58:58,536 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:58:58,901 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:58:59,276 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:59:00,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:59:00,163 INFO L93 Difference]: Finished difference Result 1152 states and 1376 transitions. [2021-02-21 18:59:00,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 18:59:00,164 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2021-02-21 18:59:00,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:59:00,172 INFO L225 Difference]: With dead ends: 1152 [2021-02-21 18:59:00,172 INFO L226 Difference]: Without dead ends: 831 [2021-02-21 18:59:00,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-21 18:59:00,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2021-02-21 18:59:00,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 732. [2021-02-21 18:59:00,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2021-02-21 18:59:00,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 828 transitions. [2021-02-21 18:59:00,584 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 828 transitions. Word has length 177 [2021-02-21 18:59:00,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:59:00,585 INFO L480 AbstractCegarLoop]: Abstraction has 732 states and 828 transitions. [2021-02-21 18:59:00,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:59:00,585 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 828 transitions. [2021-02-21 18:59:00,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-21 18:59:00,589 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:59:00,589 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] [2021-02-21 18:59:00,589 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 18:59:00,590 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:59:00,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:59:00,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1126686393, now seen corresponding path program 1 times [2021-02-21 18:59:00,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:59:00,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146104264] [2021-02-21 18:59:00,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:59:00,593 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:59:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:00,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:00,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:00,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:00,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:00,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:00,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:00,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:00,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:00,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:00,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:00,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:00,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:00,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:00,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:00,943 WARN L202 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:59:00,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:59:00,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:01,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:01,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:01,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:01,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:01,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:59:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:01,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:01,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:01,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:59:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:01,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:01,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:01,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:59:01,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:01,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:01,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:01,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:59:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:01,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:01,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:01,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 18:59:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:01,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:01,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:01,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 18:59:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:01,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:01,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:01,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-21 18:59:01,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:01,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:01,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:01,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-21 18:59:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:01,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:01,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:01,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-02-21 18:59:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:01,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:01,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:01,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:59:01,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146104264] [2021-02-21 18:59:01,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:59:01,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 18:59:01,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873551224] [2021-02-21 18:59:01,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 18:59:01,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:59:01,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 18:59:01,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 18:59:01,140 INFO L87 Difference]: Start difference. First operand 732 states and 828 transitions. Second operand 6 states. [2021-02-21 18:59:01,766 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:59:04,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:59:04,167 INFO L93 Difference]: Finished difference Result 1712 states and 2025 transitions. [2021-02-21 18:59:04,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 18:59:04,168 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2021-02-21 18:59:04,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:59:04,175 INFO L225 Difference]: With dead ends: 1712 [2021-02-21 18:59:04,175 INFO L226 Difference]: Without dead ends: 1095 [2021-02-21 18:59:04,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 18:59:04,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2021-02-21 18:59:04,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1015. [2021-02-21 18:59:04,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2021-02-21 18:59:04,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1152 transitions. [2021-02-21 18:59:04,620 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1152 transitions. Word has length 182 [2021-02-21 18:59:04,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:59:04,620 INFO L480 AbstractCegarLoop]: Abstraction has 1015 states and 1152 transitions. [2021-02-21 18:59:04,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 18:59:04,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1152 transitions. [2021-02-21 18:59:04,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-21 18:59:04,625 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:59:04,625 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] [2021-02-21 18:59:04,626 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 18:59:04,626 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:59:04,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:59:04,626 INFO L82 PathProgramCache]: Analyzing trace with hash -2136655117, now seen corresponding path program 1 times [2021-02-21 18:59:04,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:59:04,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061423411] [2021-02-21 18:59:04,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:59:04,629 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:59:04,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:59:04,705 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:59:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:59:04,776 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:59:04,988 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 18:59:04,989 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 18:59:04,990 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 18:59:05,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 06:59:05 BoogieIcfgContainer [2021-02-21 18:59:05,014 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 18:59:05,015 INFO L168 Benchmark]: Toolchain (without parser) took 25630.98 ms. Allocated memory was 154.1 MB in the beginning and 601.9 MB in the end (delta: 447.7 MB). Free memory was 129.6 MB in the beginning and 384.1 MB in the end (delta: -254.4 MB). Peak memory consumption was 193.8 MB. Max. memory is 8.0 GB. [2021-02-21 18:59:05,015 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 154.1 MB. Free memory is still 129.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 18:59:05,016 INFO L168 Benchmark]: CACSL2BoogieTranslator took 644.38 ms. Allocated memory is still 154.1 MB. Free memory was 128.6 MB in the beginning and 108.1 MB in the end (delta: 20.5 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-21 18:59:05,016 INFO L168 Benchmark]: Boogie Preprocessor took 116.41 ms. Allocated memory is still 154.1 MB. Free memory was 108.1 MB in the beginning and 135.9 MB in the end (delta: -27.8 MB). Peak memory consumption was 8.9 MB. Max. memory is 8.0 GB. [2021-02-21 18:59:05,017 INFO L168 Benchmark]: RCFGBuilder took 1270.14 ms. Allocated memory is still 154.1 MB. Free memory was 135.9 MB in the beginning and 94.8 MB in the end (delta: 41.1 MB). Peak memory consumption was 68.9 MB. Max. memory is 8.0 GB. [2021-02-21 18:59:05,017 INFO L168 Benchmark]: TraceAbstraction took 23570.50 ms. Allocated memory was 154.1 MB in the beginning and 601.9 MB in the end (delta: 447.7 MB). Free memory was 94.3 MB in the beginning and 384.1 MB in the end (delta: -289.8 MB). Peak memory consumption was 157.9 MB. Max. memory is 8.0 GB. [2021-02-21 18:59:05,019 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 154.1 MB. Free memory is still 129.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 644.38 ms. Allocated memory is still 154.1 MB. Free memory was 128.6 MB in the beginning and 108.1 MB in the end (delta: 20.5 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 116.41 ms. Allocated memory is still 154.1 MB. Free memory was 108.1 MB in the beginning and 135.9 MB in the end (delta: -27.8 MB). Peak memory consumption was 8.9 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1270.14 ms. Allocated memory is still 154.1 MB. Free memory was 135.9 MB in the beginning and 94.8 MB in the end (delta: 41.1 MB). Peak memory consumption was 68.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 23570.50 ms. Allocated memory was 154.1 MB in the beginning and 601.9 MB in the end (delta: 447.7 MB). Free memory was 94.3 MB in the beginning and 384.1 MB in the end (delta: -289.8 MB). Peak memory consumption was 157.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 46]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L220] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L428] int pumpRunning = 0; [L429] int systemActive = 1; [L677] int waterLevel = 1; [L678] int methaneLevelCritical = 0; [L771] int cleanupTimeShifts = 4; [L847] int retValue_acc ; [L848] int tmp ; [L852] FCALL select_helpers() [L853] FCALL select_features() [L854] CALL, EXPR valid_product() [L896] int retValue_acc ; [L899] retValue_acc = 1 [L900] return (retValue_acc); [L854] RET, EXPR valid_product() [L854] tmp = valid_product() [L856] COND TRUE \read(tmp) [L858] FCALL setup() [L859] CALL runTest() [L838] CALL test() [L608] int splverifierCounter ; [L609] int tmp ; [L610] int tmp___0 ; [L611] int tmp___1 ; [L612] int tmp___2 ; [L615] splverifierCounter = 0 [L617] COND TRUE 1 [L619] COND TRUE splverifierCounter < 4 [L625] tmp = __VERIFIER_nondet_int() [L627] COND TRUE \read(tmp) [L629] CALL waterRise() [L695] COND TRUE waterLevel < 2 [L696] waterLevel = waterLevel + 1 [L629] RET waterRise() [L635] tmp___0 = __VERIFIER_nondet_int() [L637] COND FALSE !(\read(tmp___0)) [L645] tmp___2 = __VERIFIER_nondet_int() [L647] COND FALSE !(\read(tmp___2)) [L653] tmp___1 = __VERIFIER_nondet_int() [L655] COND TRUE \read(tmp___1) [L657] CALL stopSystem() [L584] COND FALSE !(\read(pumpRunning)) [L591] systemActive = 0 [L657] RET stopSystem() [L664] CALL timeShift() [L436] COND FALSE !(\read(pumpRunning)) [L443] COND FALSE !(\read(systemActive)) [L451] CALL __utac_acc__Specification3_spec__1() [L906] int tmp ; [L907] int tmp___0 ; [L908] int tmp___1 ; [L912] CALL, EXPR isMethaneLevelCritical() [L716] int retValue_acc ; [L719] retValue_acc = methaneLevelCritical [L720] return (retValue_acc); [L912] RET, EXPR isMethaneLevelCritical() [L912] tmp = isMethaneLevelCritical() [L914] COND FALSE !(\read(tmp)) [L918] CALL, EXPR getWaterLevel() [L748] int retValue_acc ; [L751] retValue_acc = waterLevel [L752] return (retValue_acc); [L918] RET, EXPR getWaterLevel() [L918] tmp___0 = getWaterLevel() [L920] COND TRUE tmp___0 == 2 [L922] CALL, EXPR isPumpRunning() [L517] int retValue_acc ; [L520] retValue_acc = pumpRunning [L521] return (retValue_acc); [L922] RET, EXPR isPumpRunning() [L922] tmp___1 = isPumpRunning() [L924] COND FALSE !(\read(tmp___1)) [L928] CALL __automaton_fail() [L46] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 631 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 23.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 18.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1227 SDtfs, 1974 SDslu, 1635 SDs, 0 SdLazy, 3465 SolverSat, 656 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 151 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 7.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1015occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 359 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...