/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:05:13,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:05:13,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:05:13,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 01:05:13,824 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 01:05:13,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 01:05:13,827 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 01:05:13,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 01:05:13,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 01:05:13,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 01:05:13,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 01:05:13,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 01:05:13,836 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:05:13,837 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:05:13,839 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:05:13,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:05:13,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:05:13,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:05:13,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:05:13,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:05:13,872 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:05:13,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:05:13,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:05:13,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:05:13,896 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 01:05:13,896 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 01:05:13,896 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 01:05:13,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 01:05:13,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 01:05:13,900 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-22 01:05:13,901 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 01:05:13,902 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 01:05:13,902 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 01:05:13,903 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 01:05:13,904 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 01:05:13,905 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 01:05:13,905 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 01:05:13,906 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 01:05:13,906 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:05:13,907 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:05:13,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:05:13,909 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:05:13,920 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:05:13,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:05:13,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:05:13,922 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:05:13,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:05:13,922 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:05:13,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:05:13,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:05:13,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:05:13,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:05:13,924 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:05:13,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:05:13,924 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:05:13,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:05:13,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:05:13,925 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:05:13,925 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:05:13,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:05:13,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:05:13,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:05:13,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:05:13,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:05:13,927 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:05:13,927 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:05:14,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:05:14,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:05:14,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:05:14,323 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:05:14,324 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:05:14,325 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product59.cil.c [2021-02-22 01:05:14,417 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe1441793/22591fcb0a0546d48f4c41e3479c512b/FLAG4d0f5bb00 [2021-02-22 01:05:15,073 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:05:15,075 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product59.cil.c [2021-02-22 01:05:15,090 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe1441793/22591fcb0a0546d48f4c41e3479c512b/FLAG4d0f5bb00 [2021-02-22 01:05:15,390 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe1441793/22591fcb0a0546d48f4c41e3479c512b [2021-02-22 01:05:15,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:05:15,406 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:05:15,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:05:15,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:05:15,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:05:15,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:05:15" (1/1) ... [2021-02-22 01:05:15,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b75faa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:15, skipping insertion in model container [2021-02-22 01:05:15,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:05:15" (1/1) ... [2021-02-22 01:05:15,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:05:15,497 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:05:15,763 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_product59.cil.c[14819,14832] [2021-02-22 01:05:15,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:05:15,800 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:05:15,869 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_product59.cil.c[14819,14832] [2021-02-22 01:05:15,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:05:15,927 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:05:15,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:15 WrapperNode [2021-02-22 01:05:15,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:05:15,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:05:15,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:05:15,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:05:15,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:15" (1/1) ... [2021-02-22 01:05:15,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:15" (1/1) ... [2021-02-22 01:05:16,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:15" (1/1) ... [2021-02-22 01:05:16,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:15" (1/1) ... [2021-02-22 01:05:16,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:15" (1/1) ... [2021-02-22 01:05:16,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:15" (1/1) ... [2021-02-22 01:05:16,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:15" (1/1) ... [2021-02-22 01:05:16,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:05:16,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:05:16,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:05:16,122 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:05:16,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:15" (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 [2021-02-22 01:05:16,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:05:16,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:05:16,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-22 01:05:16,271 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:05:16,271 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-22 01:05:16,271 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-22 01:05:16,271 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-22 01:05:16,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-22 01:05:16,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-22 01:05:16,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-22 01:05:16,273 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-22 01:05:16,273 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-22 01:05:16,273 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-22 01:05:16,273 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-22 01:05:16,274 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-22 01:05:16,274 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-22 01:05:16,274 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-22 01:05:16,275 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-22 01:05:16,276 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-22 01:05:16,278 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-22 01:05:16,278 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-22 01:05:16,280 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-22 01:05:16,280 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:05:16,280 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-22 01:05:16,280 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-22 01:05:16,281 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-22 01:05:16,281 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-22 01:05:16,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-22 01:05:16,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-22 01:05:16,282 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-22 01:05:16,282 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-22 01:05:16,282 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-22 01:05:16,282 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-22 01:05:16,282 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-22 01:05:16,283 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-22 01:05:16,283 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-22 01:05:16,283 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-22 01:05:16,283 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-22 01:05:16,283 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-22 01:05:16,283 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-22 01:05:16,284 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-22 01:05:16,284 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-22 01:05:16,284 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-22 01:05:16,284 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:05:16,284 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:05:16,285 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:05:16,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:05:16,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 01:05:16,285 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-22 01:05:16,285 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 01:05:16,286 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-22 01:05:16,286 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-22 01:05:16,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 01:05:16,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-22 01:05:16,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:05:16,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-22 01:05:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-22 01:05:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:05:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-22 01:05:16,288 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-22 01:05:16,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:05:16,288 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-22 01:05:16,288 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-22 01:05:16,288 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-22 01:05:16,289 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-22 01:05:16,289 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-22 01:05:16,289 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-22 01:05:16,289 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-22 01:05:16,289 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-22 01:05:16,289 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-22 01:05:16,290 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-22 01:05:16,290 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-22 01:05:16,290 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-22 01:05:16,291 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-22 01:05:16,291 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-22 01:05:16,291 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-22 01:05:16,291 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-22 01:05:16,292 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-22 01:05:16,292 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-22 01:05:16,292 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-22 01:05:16,294 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-22 01:05:16,294 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-22 01:05:16,294 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:05:16,295 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-22 01:05:16,295 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-22 01:05:16,295 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-22 01:05:16,295 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-22 01:05:16,295 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-22 01:05:16,295 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-22 01:05:16,296 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-22 01:05:16,296 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-22 01:05:16,297 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-22 01:05:16,297 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-22 01:05:16,297 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-22 01:05:16,297 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-22 01:05:16,297 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-22 01:05:16,297 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-22 01:05:16,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:05:16,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:05:16,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:05:17,728 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:05:17,729 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-22 01:05:17,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:05:17 BoogieIcfgContainer [2021-02-22 01:05:17,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:05:17,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:05:17,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:05:17,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:05:17,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:05:15" (1/3) ... [2021-02-22 01:05:17,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1633c4dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:05:17, skipping insertion in model container [2021-02-22 01:05:17,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:05:15" (2/3) ... [2021-02-22 01:05:17,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1633c4dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:05:17, skipping insertion in model container [2021-02-22 01:05:17,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:05:17" (3/3) ... [2021-02-22 01:05:17,740 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product59.cil.c [2021-02-22 01:05:17,747 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:05:17,752 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:05:17,770 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:05:17,799 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:05:17,799 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:05:17,799 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:05:17,799 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:05:17,799 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:05:17,799 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:05:17,800 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:05:17,800 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:05:17,824 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states. [2021-02-22 01:05:17,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-22 01:05:17,846 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:05:17,847 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] [2021-02-22 01:05:17,847 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:05:17,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:05:17,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1221408167, now seen corresponding path program 1 times [2021-02-22 01:05:17,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:05:17,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331625873] [2021-02-22 01:05:17,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:05:17,954 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:05:18,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:18,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:18,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:18,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:18,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:18,793 WARN L202 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:05:18,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:05:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:18,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:18,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:18,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:05:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:18,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:18,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:18,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:05:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:18,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:18,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:18,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:05:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:18,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:18,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:18,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:05:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:18,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:18,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:18,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-22 01:05:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:18,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:19,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:19,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 01:05:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:19,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:19,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:19,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-22 01:05:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:19,012 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:19,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:19,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:05:19,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331625873] [2021-02-22 01:05:19,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:05:19,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 01:05:19,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500232763] [2021-02-22 01:05:19,084 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 01:05:19,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:05:19,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 01:05:19,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 01:05:19,102 INFO L87 Difference]: Start difference. First operand 352 states. Second operand 3 states. [2021-02-22 01:05:21,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:05:21,096 INFO L93 Difference]: Finished difference Result 567 states and 669 transitions. [2021-02-22 01:05:21,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 01:05:21,098 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-22 01:05:21,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:05:21,115 INFO L225 Difference]: With dead ends: 567 [2021-02-22 01:05:21,115 INFO L226 Difference]: Without dead ends: 345 [2021-02-22 01:05:21,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 01:05:21,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-02-22 01:05:21,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 300. [2021-02-22 01:05:21,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2021-02-22 01:05:21,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 327 transitions. [2021-02-22 01:05:21,313 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 327 transitions. Word has length 158 [2021-02-22 01:05:21,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:05:21,314 INFO L480 AbstractCegarLoop]: Abstraction has 300 states and 327 transitions. [2021-02-22 01:05:21,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 01:05:21,315 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 327 transitions. [2021-02-22 01:05:21,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-22 01:05:21,319 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:05:21,319 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] [2021-02-22 01:05:21,320 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:05:21,320 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:05:21,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:05:21,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1558389514, now seen corresponding path program 1 times [2021-02-22 01:05:21,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:05:21,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239442154] [2021-02-22 01:05:21,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:05:21,326 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:05:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:21,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:21,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:21,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:21,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:21,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:21,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:21,753 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:05:21,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:05:21,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:21,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:21,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:21,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:05:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:21,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:21,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:21,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:05:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:21,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:21,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:21,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:05:21,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:21,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:21,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:21,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:05:21,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:21,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:21,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:21,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-22 01:05:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:21,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:21,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:21,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-22 01:05:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:21,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:21,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:21,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-22 01:05:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:21,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:21,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:21,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:05:21,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239442154] [2021-02-22 01:05:21,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:05:21,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:05:21,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021810149] [2021-02-22 01:05:21,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:05:21,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:05:21,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:05:21,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:05:21,865 INFO L87 Difference]: Start difference. First operand 300 states and 327 transitions. Second operand 4 states. [2021-02-22 01:05:22,571 WARN L202 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 01:05:23,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:05:23,944 INFO L93 Difference]: Finished difference Result 477 states and 535 transitions. [2021-02-22 01:05:23,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 01:05:23,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-22 01:05:23,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:05:23,950 INFO L225 Difference]: With dead ends: 477 [2021-02-22 01:05:23,950 INFO L226 Difference]: Without dead ends: 328 [2021-02-22 01:05:23,953 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 [2021-02-22 01:05:23,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-02-22 01:05:24,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 290. [2021-02-22 01:05:24,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2021-02-22 01:05:24,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 314 transitions. [2021-02-22 01:05:24,075 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 314 transitions. Word has length 159 [2021-02-22 01:05:24,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:05:24,076 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 314 transitions. [2021-02-22 01:05:24,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:05:24,076 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 314 transitions. [2021-02-22 01:05:24,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-22 01:05:24,078 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:05:24,079 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] [2021-02-22 01:05:24,079 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:05:24,079 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:05:24,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:05:24,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1682854002, now seen corresponding path program 1 times [2021-02-22 01:05:24,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:05:24,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563172933] [2021-02-22 01:05:24,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:05:24,085 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:05:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:24,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:24,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:24,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:24,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:24,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:24,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:24,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:24,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:24,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:24,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:05:24,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:24,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:05:24,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:24,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:05:24,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:24,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:24,522 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:05:24,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:05:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:24,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:24,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:24,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:24,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:05:24,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:05:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:24,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:24,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:24,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:05:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:24,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:24,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:24,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:05:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:24,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:24,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:24,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:24,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:05:24,628 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-22 01:05:24,629 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-22 01:05:24,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:05:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:24,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:24,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:24,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 01:05:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:24,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:24,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:24,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-22 01:05:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:24,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:24,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:24,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-02-22 01:05:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:24,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:24,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:24,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:05:24,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563172933] [2021-02-22 01:05:24,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:05:24,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-22 01:05:24,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205289510] [2021-02-22 01:05:24,722 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-22 01:05:24,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:05:24,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-22 01:05:24,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-22 01:05:24,723 INFO L87 Difference]: Start difference. First operand 290 states and 314 transitions. Second operand 9 states. [2021-02-22 01:05:25,418 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:05:25,833 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 01:05:26,242 WARN L202 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-22 01:05:26,597 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:05:26,966 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:05:27,314 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:05:28,361 WARN L202 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 01:05:31,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:05:31,348 INFO L93 Difference]: Finished difference Result 786 states and 899 transitions. [2021-02-22 01:05:31,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-22 01:05:31,354 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2021-02-22 01:05:31,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:05:31,359 INFO L225 Difference]: With dead ends: 786 [2021-02-22 01:05:31,359 INFO L226 Difference]: Without dead ends: 611 [2021-02-22 01:05:31,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-22 01:05:31,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-02-22 01:05:31,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 540. [2021-02-22 01:05:31,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 540 states. [2021-02-22 01:05:31,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 603 transitions. [2021-02-22 01:05:31,622 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 603 transitions. Word has length 168 [2021-02-22 01:05:31,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:05:31,623 INFO L480 AbstractCegarLoop]: Abstraction has 540 states and 603 transitions. [2021-02-22 01:05:31,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-22 01:05:31,623 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 603 transitions. [2021-02-22 01:05:31,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-22 01:05:31,627 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:05:31,627 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] [2021-02-22 01:05:31,627 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 01:05:31,627 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:05:31,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:05:31,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1142831282, now seen corresponding path program 1 times [2021-02-22 01:05:31,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:05:31,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982193073] [2021-02-22 01:05:31,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:05:31,632 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:05:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:31,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:31,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:31,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:31,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:31,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:31,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:31,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:31,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:31,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:31,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:31,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:31,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:31,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:31,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:31,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:31,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:32,017 WARN L202 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:05:32,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:05:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:32,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:32,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:32,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:32,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:05:32,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:05:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:32,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:32,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:32,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:05:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:32,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:32,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:32,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:05:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:32,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:32,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:32,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:05:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:32,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:32,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:32,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-22 01:05:32,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:32,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:32,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:32,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-22 01:05:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:32,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:32,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:32,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-02-22 01:05:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:32,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:32,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:32,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:32,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:32,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:32,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:32,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-02-22 01:05:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:32,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:32,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:32,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:05:32,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982193073] [2021-02-22 01:05:32,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:05:32,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-22 01:05:32,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377296470] [2021-02-22 01:05:32,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-22 01:05:32,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:05:32,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-22 01:05:32,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-22 01:05:32,222 INFO L87 Difference]: Start difference. First operand 540 states and 603 transitions. Second operand 9 states. [2021-02-22 01:05:32,805 WARN L202 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:05:35,020 WARN L202 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:05:35,446 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:05:35,845 WARN L202 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:05:36,329 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:05:36,685 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:05:37,083 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:05:37,435 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:05:38,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:05:38,777 INFO L93 Difference]: Finished difference Result 1477 states and 1760 transitions. [2021-02-22 01:05:38,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-22 01:05:38,778 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2021-02-22 01:05:38,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:05:38,787 INFO L225 Difference]: With dead ends: 1477 [2021-02-22 01:05:38,787 INFO L226 Difference]: Without dead ends: 1052 [2021-02-22 01:05:38,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-22 01:05:38,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2021-02-22 01:05:39,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 948. [2021-02-22 01:05:39,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 948 states. [2021-02-22 01:05:39,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1082 transitions. [2021-02-22 01:05:39,249 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1082 transitions. Word has length 177 [2021-02-22 01:05:39,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:05:39,249 INFO L480 AbstractCegarLoop]: Abstraction has 948 states and 1082 transitions. [2021-02-22 01:05:39,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-22 01:05:39,250 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1082 transitions. [2021-02-22 01:05:39,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-22 01:05:39,255 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:05:39,255 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] [2021-02-22 01:05:39,255 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 01:05:39,256 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:05:39,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:05:39,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1523326519, now seen corresponding path program 1 times [2021-02-22 01:05:39,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:05:39,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877580815] [2021-02-22 01:05:39,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:05:39,262 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:05:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:39,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:39,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:39,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:39,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:39,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:39,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:39,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:39,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:39,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:39,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:39,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:39,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:39,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:39,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:39,614 WARN L202 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:05:39,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:05:39,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:39,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:39,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:39,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:39,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:39,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:05:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:39,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:39,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:39,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:05:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:39,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:39,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:39,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:05:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:39,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:39,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:39,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:05:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:39,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:39,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:39,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-22 01:05:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:39,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:39,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:05:39,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-22 01:05:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:39,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:39,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:39,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-22 01:05:39,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:39,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:39,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:39,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-22 01:05:39,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:39,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:39,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:39,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-02-22 01:05:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:05:39,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:05:39,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:05:39,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:05:39,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877580815] [2021-02-22 01:05:39,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:05:39,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 01:05:39,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712431489] [2021-02-22 01:05:39,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 01:05:39,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:05:39,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 01:05:39,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-22 01:05:39,757 INFO L87 Difference]: Start difference. First operand 948 states and 1082 transitions. Second operand 6 states. [2021-02-22 01:05:40,335 WARN L202 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:05:42,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:05:42,939 INFO L93 Difference]: Finished difference Result 2109 states and 2519 transitions. [2021-02-22 01:05:42,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-22 01:05:42,940 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2021-02-22 01:05:42,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:05:42,948 INFO L225 Difference]: With dead ends: 2109 [2021-02-22 01:05:42,948 INFO L226 Difference]: Without dead ends: 1276 [2021-02-22 01:05:42,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-22 01:05:42,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2021-02-22 01:05:43,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1179. [2021-02-22 01:05:43,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1179 states. [2021-02-22 01:05:43,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1342 transitions. [2021-02-22 01:05:43,439 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1342 transitions. Word has length 182 [2021-02-22 01:05:43,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:05:43,440 INFO L480 AbstractCegarLoop]: Abstraction has 1179 states and 1342 transitions. [2021-02-22 01:05:43,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 01:05:43,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1342 transitions. [2021-02-22 01:05:43,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-22 01:05:43,444 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:05:43,444 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] [2021-02-22 01:05:43,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 01:05:43,444 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:05:43,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:05:43,445 INFO L82 PathProgramCache]: Analyzing trace with hash -751773284, now seen corresponding path program 1 times [2021-02-22 01:05:43,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:05:43,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19469991] [2021-02-22 01:05:43,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:05:43,448 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:05:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:05:43,526 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:05:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:05:43,601 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:05:43,846 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:05:43,846 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:05:43,848 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-22 01:05:43,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:05:43 BoogieIcfgContainer [2021-02-22 01:05:43,884 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:05:43,891 INFO L168 Benchmark]: Toolchain (without parser) took 28490.17 ms. Allocated memory was 151.0 MB in the beginning and 585.1 MB in the end (delta: 434.1 MB). Free memory was 106.7 MB in the beginning and 339.3 MB in the end (delta: -232.5 MB). Peak memory consumption was 202.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:05:43,895 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:05:43,895 INFO L168 Benchmark]: CACSL2BoogieTranslator took 519.55 ms. Allocated memory is still 151.0 MB. Free memory was 105.6 MB in the beginning and 121.3 MB in the end (delta: -15.7 MB). Peak memory consumption was 12.5 MB. Max. memory is 8.0 GB. [2021-02-22 01:05:43,896 INFO L168 Benchmark]: Boogie Preprocessor took 189.79 ms. Allocated memory is still 151.0 MB. Free memory was 121.3 MB in the beginning and 130.5 MB in the end (delta: -9.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 8.0 GB. [2021-02-22 01:05:43,897 INFO L168 Benchmark]: RCFGBuilder took 1609.62 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 130.2 MB in the beginning and 102.9 MB in the end (delta: 27.3 MB). Peak memory consumption was 58.6 MB. Max. memory is 8.0 GB. [2021-02-22 01:05:43,898 INFO L168 Benchmark]: TraceAbstraction took 26151.31 ms. Allocated memory was 181.4 MB in the beginning and 585.1 MB in the end (delta: 403.7 MB). Free memory was 102.4 MB in the beginning and 339.3 MB in the end (delta: -236.9 MB). Peak memory consumption was 166.3 MB. Max. memory is 8.0 GB. [2021-02-22 01:05:43,902 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 519.55 ms. Allocated memory is still 151.0 MB. Free memory was 105.6 MB in the beginning and 121.3 MB in the end (delta: -15.7 MB). Peak memory consumption was 12.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 189.79 ms. Allocated memory is still 151.0 MB. Free memory was 121.3 MB in the beginning and 130.5 MB in the end (delta: -9.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1609.62 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 130.2 MB in the beginning and 102.9 MB in the end (delta: 27.3 MB). Peak memory consumption was 58.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 26151.31 ms. Allocated memory was 181.4 MB in the beginning and 585.1 MB in the end (delta: 403.7 MB). Free memory was 102.4 MB in the beginning and 339.3 MB in the end (delta: -236.9 MB). Peak memory consumption was 166.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 696]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L416] int waterLevel = 1; [L417] int methaneLevelCritical = 0; [L519] int cleanupTimeShifts = 4; [L771] int pumpRunning = 0; [L772] int systemActive = 1; [L598] int retValue_acc ; [L599] int tmp ; [L603] FCALL select_helpers() [L604] FCALL select_features() [L605] CALL, EXPR valid_product() [L647] int retValue_acc ; [L650] retValue_acc = 1 [L651] return (retValue_acc); [L605] RET, EXPR valid_product() [L605] tmp = valid_product() [L607] COND TRUE \read(tmp) [L609] FCALL setup() [L610] CALL runTest() [L589] CALL test() [L703] int splverifierCounter ; [L704] int tmp ; [L705] int tmp___0 ; [L706] int tmp___1 ; [L707] int tmp___2 ; [L710] splverifierCounter = 0 [L712] COND TRUE 1 [L714] COND TRUE splverifierCounter < 4 [L720] tmp = __VERIFIER_nondet_int() [L722] COND TRUE \read(tmp) [L724] CALL waterRise() [L434] COND TRUE waterLevel < 2 [L435] waterLevel = waterLevel + 1 [L724] RET waterRise() [L730] tmp___0 = __VERIFIER_nondet_int() [L732] COND FALSE !(\read(tmp___0)) [L740] tmp___2 = __VERIFIER_nondet_int() [L742] COND FALSE !(\read(tmp___2)) [L746] tmp___1 = __VERIFIER_nondet_int() [L748] COND TRUE \read(tmp___1) [L750] CALL stopSystem() [L989] COND FALSE !(\read(pumpRunning)) [L996] systemActive = 0 [L750] RET stopSystem() [L757] CALL timeShift() [L778] COND FALSE !(\read(pumpRunning)) [L785] COND FALSE !(\read(systemActive)) [L793] CALL __utac_acc__Specification3_spec__1() [L659] int tmp ; [L660] int tmp___0 ; [L661] int tmp___1 ; [L665] CALL, EXPR isMethaneLevelCritical() [L455] int retValue_acc ; [L458] retValue_acc = methaneLevelCritical [L459] return (retValue_acc); [L665] RET, EXPR isMethaneLevelCritical() [L665] tmp = isMethaneLevelCritical() [L667] COND FALSE !(\read(tmp)) [L671] CALL, EXPR getWaterLevel() [L487] int retValue_acc ; [L490] retValue_acc = waterLevel [L491] return (retValue_acc); [L671] RET, EXPR getWaterLevel() [L671] tmp___0 = getWaterLevel() [L673] COND TRUE tmp___0 == 2 [L675] CALL, EXPR isPumpRunning() [L903] int retValue_acc ; [L906] retValue_acc = pumpRunning [L907] return (retValue_acc); [L675] RET, EXPR isPumpRunning() [L675] tmp___1 = isPumpRunning() [L677] COND FALSE !(\read(tmp___1)) [L681] CALL __automaton_fail() [L696] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 667 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 26.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 20.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1420 SDtfs, 2115 SDslu, 1630 SDs, 0 SdLazy, 4232 SolverSat, 659 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 7.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1179occurred 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: 1.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 355 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...