/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:27:11,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:27:11,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:27:11,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:27:11,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:27:11,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:27:11,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:27:11,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:27:11,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:27:11,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:27:11,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:27:11,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:27:11,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:27:11,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:27:11,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:27:11,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:27:11,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:27:11,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:27:11,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:27:11,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:27:11,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:27:11,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:27:11,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:27:11,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:27:11,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:27:11,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:27:11,888 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:27:11,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:27:11,889 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:27:11,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:27:11,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:27:11,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:27:11,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:27:11,893 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:27:11,894 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:27:11,895 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:27:11,895 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:27:11,896 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:27:11,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:27:11,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:27:11,898 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:27:11,899 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:27:11,911 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:27:11,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:27:11,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:27:11,913 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:27:11,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:27:11,913 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:27:11,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:27:11,914 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:27:11,914 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:27:11,914 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:27:11,914 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:27:11,915 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:27:11,915 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:27:11,915 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:27:11,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:27:11,915 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:27:11,916 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:27:11,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:27:11,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:27:11,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:27:11,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:27:11,917 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:27:11,917 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:27:12,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:27:12,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:27:12,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:27:12,318 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:27:12,318 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:27:12,319 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product63.cil.c [2021-02-23 16:27:12,411 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16aa05fb0/b04a0a0dd7fc4dc38322fae8f976233f/FLAG4762259ae [2021-02-23 16:27:13,087 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:27:13,088 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product63.cil.c [2021-02-23 16:27:13,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16aa05fb0/b04a0a0dd7fc4dc38322fae8f976233f/FLAG4762259ae [2021-02-23 16:27:13,381 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16aa05fb0/b04a0a0dd7fc4dc38322fae8f976233f [2021-02-23 16:27:13,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:27:13,400 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:27:13,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:27:13,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:27:13,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:27:13,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:27:13" (1/1) ... [2021-02-23 16:27:13,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e6175ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:13, skipping insertion in model container [2021-02-23 16:27:13,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:27:13" (1/1) ... [2021-02-23 16:27:13,422 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:27:13,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:27:13,825 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_product63.cil.c[8881,8894] [2021-02-23 16:27:13,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:27:13,894 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:27:13,941 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_product63.cil.c[8881,8894] [2021-02-23 16:27:13,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:27:14,030 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:27:14,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:14 WrapperNode [2021-02-23 16:27:14,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:27:14,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:27:14,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:27:14,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:27:14,043 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:14" (1/1) ... [2021-02-23 16:27:14,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:14" (1/1) ... [2021-02-23 16:27:14,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:14" (1/1) ... [2021-02-23 16:27:14,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:14" (1/1) ... [2021-02-23 16:27:14,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:14" (1/1) ... [2021-02-23 16:27:14,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:14" (1/1) ... [2021-02-23 16:27:14,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:14" (1/1) ... [2021-02-23 16:27:14,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:27:14,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:27:14,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:27:14,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:27:14,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:27:14,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:27:14,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:27:14,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:27:14,291 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:27:14,291 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:27:14,291 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:27:14,291 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:27:14,291 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:27:14,291 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:27:14,292 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:27:14,292 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:27:14,292 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:27:14,292 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:27:14,292 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:27:14,292 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:27:14,293 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-23 16:27:14,293 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-23 16:27:14,294 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:27:14,294 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-23 16:27:14,294 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:27:14,294 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:27:14,294 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:27:14,294 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:27:14,295 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:27:14,295 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-23 16:27:14,295 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-23 16:27:14,295 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 16:27:14,295 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:27:14,295 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:27:14,295 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:27:14,296 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:27:14,296 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:27:14,296 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:27:14,296 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:27:14,296 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-23 16:27:14,296 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-23 16:27:14,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:27:14,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:27:14,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:27:14,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:27:14,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:27:14,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:27:14,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:27:14,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:27:14,298 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:27:14,298 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:27:14,298 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:27:14,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:27:14,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:27:14,298 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:27:14,299 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:27:14,299 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:27:14,299 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:27:14,299 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:27:14,299 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:27:14,299 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:27:14,299 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:27:14,299 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:27:14,300 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:27:14,300 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:27:14,300 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:27:14,300 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:27:14,300 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:27:14,300 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:27:14,300 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:27:14,301 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:27:14,301 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:27:14,301 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-23 16:27:14,301 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-23 16:27:14,301 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:27:14,301 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:27:14,302 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:27:14,302 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 16:27:14,302 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:27:14,302 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:27:14,302 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:27:14,302 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-23 16:27:14,303 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-23 16:27:14,303 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-23 16:27:14,303 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-23 16:27:14,303 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:27:14,303 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-23 16:27:14,303 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:27:14,303 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:27:14,303 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:27:14,304 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:27:14,304 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:27:14,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:27:14,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:27:14,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:27:14,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:27:14,305 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:27:14,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:27:14,305 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:27:14,305 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:27:14,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:27:14,305 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:27:14,305 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:27:14,306 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:27:14,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:27:14,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:27:14,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:27:15,504 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:27:15,504 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:27:15,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:27:15 BoogieIcfgContainer [2021-02-23 16:27:15,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:27:15,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:27:15,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:27:15,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:27:15,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:27:13" (1/3) ... [2021-02-23 16:27:15,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@731749f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:27:15, skipping insertion in model container [2021-02-23 16:27:15,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:27:14" (2/3) ... [2021-02-23 16:27:15,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@731749f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:27:15, skipping insertion in model container [2021-02-23 16:27:15,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:27:15" (3/3) ... [2021-02-23 16:27:15,516 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product63.cil.c [2021-02-23 16:27:15,522 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:27:15,527 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:27:15,546 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:27:15,572 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:27:15,572 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:27:15,572 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:27:15,573 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:27:15,573 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:27:15,573 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:27:15,573 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:27:15,573 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:27:15,597 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states. [2021-02-23 16:27:15,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-23 16:27:15,619 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:27:15,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:27:15,620 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:27:15,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:27:15,626 INFO L82 PathProgramCache]: Analyzing trace with hash -243843483, now seen corresponding path program 1 times [2021-02-23 16:27:15,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:27:15,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507136930] [2021-02-23 16:27:15,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:27:15,708 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:27:15,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:16,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:16,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:16,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:16,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:16,416 WARN L202 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:27:16,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:27:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:16,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:16,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:16,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:27:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:16,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:16,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:16,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:27:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:16,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:16,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:16,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:27:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:16,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:16,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:16,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:27:16,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:16,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:16,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:16,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:27:16,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:16,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:16,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:16,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:27:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:16,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:16,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:16,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-23 16:27:16,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:16,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:16,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:16,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:27:16,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507136930] [2021-02-23 16:27:16,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:27:16,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:27:16,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477541039] [2021-02-23 16:27:16,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:27:16,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:27:16,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:27:16,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:27:16,630 INFO L87 Difference]: Start difference. First operand 364 states. Second operand 3 states. [2021-02-23 16:27:18,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:27:18,655 INFO L93 Difference]: Finished difference Result 593 states and 706 transitions. [2021-02-23 16:27:18,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:27:18,658 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-23 16:27:18,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:27:18,695 INFO L225 Difference]: With dead ends: 593 [2021-02-23 16:27:18,695 INFO L226 Difference]: Without dead ends: 359 [2021-02-23 16:27:18,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:27:18,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2021-02-23 16:27:18,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 312. [2021-02-23 16:27:18,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2021-02-23 16:27:18,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 344 transitions. [2021-02-23 16:27:18,971 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 344 transitions. Word has length 158 [2021-02-23 16:27:18,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:27:18,972 INFO L480 AbstractCegarLoop]: Abstraction has 312 states and 344 transitions. [2021-02-23 16:27:18,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:27:18,972 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 344 transitions. [2021-02-23 16:27:18,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-23 16:27:18,977 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:27:18,977 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:27:18,977 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:27:18,978 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:27:18,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:27:18,979 INFO L82 PathProgramCache]: Analyzing trace with hash 2104447006, now seen corresponding path program 1 times [2021-02-23 16:27:18,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:27:18,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278799353] [2021-02-23 16:27:18,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:27:18,983 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:27:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:19,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:19,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:19,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:19,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:19,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:19,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:19,436 WARN L202 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:27:19,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:27:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:19,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:19,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:19,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:27:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:19,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:19,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:19,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:27:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:19,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:19,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:19,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:27:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:19,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:19,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:19,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:27:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:19,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:19,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:19,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-23 16:27:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:19,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:19,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:19,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:27:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:19,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:19,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:19,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-23 16:27:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:19,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:19,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:19,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:27:19,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278799353] [2021-02-23 16:27:19,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:27:19,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:27:19,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592587885] [2021-02-23 16:27:19,581 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:27:19,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:27:19,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:27:19,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:27:19,582 INFO L87 Difference]: Start difference. First operand 312 states and 344 transitions. Second operand 4 states. [2021-02-23 16:27:20,329 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:27:21,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:27:21,849 INFO L93 Difference]: Finished difference Result 503 states and 572 transitions. [2021-02-23 16:27:21,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:27:21,850 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-23 16:27:21,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:27:21,857 INFO L225 Difference]: With dead ends: 503 [2021-02-23 16:27:21,857 INFO L226 Difference]: Without dead ends: 342 [2021-02-23 16:27:21,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:27:21,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-02-23 16:27:21,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 302. [2021-02-23 16:27:21,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2021-02-23 16:27:21,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 331 transitions. [2021-02-23 16:27:21,993 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 331 transitions. Word has length 159 [2021-02-23 16:27:21,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:27:21,994 INFO L480 AbstractCegarLoop]: Abstraction has 302 states and 331 transitions. [2021-02-23 16:27:21,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:27:21,994 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 331 transitions. [2021-02-23 16:27:21,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-23 16:27:21,997 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:27:21,997 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] [2021-02-23 16:27:21,997 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:27:21,998 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:27:21,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:27:21,998 INFO L82 PathProgramCache]: Analyzing trace with hash -218181787, now seen corresponding path program 1 times [2021-02-23 16:27:21,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:27:21,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573341431] [2021-02-23 16:27:21,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:27:22,002 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:27:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:22,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:22,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:22,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:22,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:22,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:22,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:22,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:22,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:22,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:22,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:27:22,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:22,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:27:22,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:22,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:27:22,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:22,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:22,412 WARN L202 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:27:22,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:27:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:22,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:22,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:22,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:22,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:27:22,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:27:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:22,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:22,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:22,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:27:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:22,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:22,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:22,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:27:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:22,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:22,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:22,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:22,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:27:22,529 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:27:22,530 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:27:22,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:27:22,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:22,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:22,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:22,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:27:22,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:22,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:22,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:22,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-23 16:27:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:22,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:22,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:22,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-02-23 16:27:22,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:22,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:22,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:22,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:27:22,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573341431] [2021-02-23 16:27:22,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:27:22,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:27:22,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733828219] [2021-02-23 16:27:22,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:27:22,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:27:22,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:27:22,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:27:22,635 INFO L87 Difference]: Start difference. First operand 302 states and 331 transitions. Second operand 9 states. [2021-02-23 16:27:23,192 WARN L202 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:27:23,672 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:27:24,050 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:27:24,422 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:27:24,849 WARN L202 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:27:25,190 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:27:26,242 WARN L202 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:27:29,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:27:29,676 INFO L93 Difference]: Finished difference Result 826 states and 956 transitions. [2021-02-23 16:27:29,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:27:29,678 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2021-02-23 16:27:29,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:27:29,686 INFO L225 Difference]: With dead ends: 826 [2021-02-23 16:27:29,686 INFO L226 Difference]: Without dead ends: 639 [2021-02-23 16:27:29,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-23 16:27:29,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-02-23 16:27:29,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 564. [2021-02-23 16:27:29,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 564 states. [2021-02-23 16:27:29,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 637 transitions. [2021-02-23 16:27:29,983 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 637 transitions. Word has length 168 [2021-02-23 16:27:29,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:27:29,983 INFO L480 AbstractCegarLoop]: Abstraction has 564 states and 637 transitions. [2021-02-23 16:27:29,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:27:29,984 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 637 transitions. [2021-02-23 16:27:29,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-23 16:27:29,988 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:27:29,988 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] [2021-02-23 16:27:29,988 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:27:29,989 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:27:29,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:27:29,989 INFO L82 PathProgramCache]: Analyzing trace with hash -289433691, now seen corresponding path program 1 times [2021-02-23 16:27:29,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:27:29,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296117253] [2021-02-23 16:27:29,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:27:29,993 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:27:30,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:30,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:30,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:30,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:30,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:30,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:30,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:30,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:30,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:30,078 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:30,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:30,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:30,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:30,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:30,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:30,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:30,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:30,412 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:27:30,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:27:30,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:30,461 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:30,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:30,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:30,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:27:30,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:27:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:30,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:30,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:30,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:27:30,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:30,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:30,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:30,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:27:30,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:30,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:30,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:30,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:27:30,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:30,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:30,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:30,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 16:27:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:30,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:30,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:30,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-23 16:27:30,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:30,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:30,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:30,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-02-23 16:27:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:30,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:30,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:30,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:30,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:30,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:30,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:30,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-02-23 16:27:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:30,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:30,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:30,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:27:30,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296117253] [2021-02-23 16:27:30,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:27:30,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:27:30,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985761426] [2021-02-23 16:27:30,581 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:27:30,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:27:30,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:27:30,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:27:30,582 INFO L87 Difference]: Start difference. First operand 564 states and 637 transitions. Second operand 9 states. [2021-02-23 16:27:31,364 WARN L202 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:27:33,857 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:27:34,280 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:27:34,766 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:27:35,225 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:27:35,588 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:27:35,983 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:27:36,340 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:27:37,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:27:37,850 INFO L93 Difference]: Finished difference Result 1557 states and 1878 transitions. [2021-02-23 16:27:37,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-23 16:27:37,851 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2021-02-23 16:27:37,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:27:37,860 INFO L225 Difference]: With dead ends: 1557 [2021-02-23 16:27:37,860 INFO L226 Difference]: Without dead ends: 1108 [2021-02-23 16:27:37,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-23 16:27:37,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2021-02-23 16:27:38,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1000. [2021-02-23 16:27:38,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2021-02-23 16:27:38,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1156 transitions. [2021-02-23 16:27:38,376 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1156 transitions. Word has length 177 [2021-02-23 16:27:38,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:27:38,376 INFO L480 AbstractCegarLoop]: Abstraction has 1000 states and 1156 transitions. [2021-02-23 16:27:38,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:27:38,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1156 transitions. [2021-02-23 16:27:38,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-23 16:27:38,382 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:27:38,383 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] [2021-02-23 16:27:38,383 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:27:38,383 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:27:38,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:27:38,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1398088534, now seen corresponding path program 1 times [2021-02-23 16:27:38,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:27:38,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682472677] [2021-02-23 16:27:38,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:27:38,387 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:27:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:38,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:38,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:38,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:38,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:38,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:38,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:38,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:38,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:38,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:38,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:38,461 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:38,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:38,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:38,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:38,786 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:27:38,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:27:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:38,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:38,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:38,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:38,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:38,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:27:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:38,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:38,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:38,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:27:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:38,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:38,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:38,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:27:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:38,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:38,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:38,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:27:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:38,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:38,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:38,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 16:27:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:38,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:38,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:38,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-23 16:27:38,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:38,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:38,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:38,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-23 16:27:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:38,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:38,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:38,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-23 16:27:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:38,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:38,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:38,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-02-23 16:27:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:38,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:38,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:38,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:27:38,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682472677] [2021-02-23 16:27:38,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:27:38,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 16:27:38,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506927339] [2021-02-23 16:27:38,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 16:27:38,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:27:38,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 16:27:38,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 16:27:38,999 INFO L87 Difference]: Start difference. First operand 1000 states and 1156 transitions. Second operand 6 states. [2021-02-23 16:27:39,707 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:27:42,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:27:42,634 INFO L93 Difference]: Finished difference Result 2231 states and 2691 transitions. [2021-02-23 16:27:42,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 16:27:42,634 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2021-02-23 16:27:42,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:27:42,642 INFO L225 Difference]: With dead ends: 2231 [2021-02-23 16:27:42,642 INFO L226 Difference]: Without dead ends: 1346 [2021-02-23 16:27:42,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-23 16:27:42,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2021-02-23 16:27:43,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 1249. [2021-02-23 16:27:43,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1249 states. [2021-02-23 16:27:43,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1424 transitions. [2021-02-23 16:27:43,134 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1424 transitions. Word has length 182 [2021-02-23 16:27:43,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:27:43,134 INFO L480 AbstractCegarLoop]: Abstraction has 1249 states and 1424 transitions. [2021-02-23 16:27:43,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 16:27:43,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1424 transitions. [2021-02-23 16:27:43,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-23 16:27:43,138 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:27:43,138 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] [2021-02-23 16:27:43,138 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:27:43,138 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:27:43,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:27:43,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1322695665, now seen corresponding path program 1 times [2021-02-23 16:27:43,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:27:43,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376676297] [2021-02-23 16:27:43,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:27:43,142 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:27:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:27:43,216 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:27:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:27:43,287 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:27:43,474 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 16:27:43,475 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 16:27:43,476 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 16:27:43,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:27:43 BoogieIcfgContainer [2021-02-23 16:27:43,498 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 16:27:43,500 INFO L168 Benchmark]: Toolchain (without parser) took 30111.34 ms. Allocated memory was 151.0 MB in the beginning and 690.0 MB in the end (delta: 539.0 MB). Free memory was 125.5 MB in the beginning and 443.5 MB in the end (delta: -318.0 MB). Peak memory consumption was 221.0 MB. Max. memory is 8.0 GB. [2021-02-23 16:27:43,500 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 16:27:43,500 INFO L168 Benchmark]: CACSL2BoogieTranslator took 624.80 ms. Allocated memory is still 151.0 MB. Free memory was 124.3 MB in the beginning and 102.0 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-23 16:27:43,501 INFO L168 Benchmark]: Boogie Preprocessor took 138.57 ms. Allocated memory is still 151.0 MB. Free memory was 101.9 MB in the beginning and 132.1 MB in the end (delta: -30.2 MB). Peak memory consumption was 9.3 MB. Max. memory is 8.0 GB. [2021-02-23 16:27:43,502 INFO L168 Benchmark]: RCFGBuilder took 1335.94 ms. Allocated memory was 151.0 MB in the beginning and 190.8 MB in the end (delta: 39.8 MB). Free memory was 132.1 MB in the beginning and 126.6 MB in the end (delta: 5.5 MB). Peak memory consumption was 69.8 MB. Max. memory is 8.0 GB. [2021-02-23 16:27:43,502 INFO L168 Benchmark]: TraceAbstraction took 27989.60 ms. Allocated memory was 190.8 MB in the beginning and 690.0 MB in the end (delta: 499.1 MB). Free memory was 126.0 MB in the beginning and 443.5 MB in the end (delta: -317.4 MB). Peak memory consumption was 181.7 MB. Max. memory is 8.0 GB. [2021-02-23 16:27:43,504 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 624.80 ms. Allocated memory is still 151.0 MB. Free memory was 124.3 MB in the beginning and 102.0 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 138.57 ms. Allocated memory is still 151.0 MB. Free memory was 101.9 MB in the beginning and 132.1 MB in the end (delta: -30.2 MB). Peak memory consumption was 9.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1335.94 ms. Allocated memory was 151.0 MB in the beginning and 190.8 MB in the end (delta: 39.8 MB). Free memory was 132.1 MB in the beginning and 126.6 MB in the end (delta: 5.5 MB). Peak memory consumption was 69.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 27989.60 ms. Allocated memory was 190.8 MB in the beginning and 690.0 MB in the end (delta: 499.1 MB). Free memory was 126.0 MB in the beginning and 443.5 MB in the end (delta: -317.4 MB). Peak memory consumption was 181.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 621]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L190] int pumpRunning = 0; [L191] int systemActive = 1; [L514] int waterLevel = 1; [L515] int methaneLevelCritical = 0; [L829] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L123] int retValue_acc ; [L124] int tmp ; [L128] FCALL select_helpers() [L129] FCALL select_features() [L130] CALL, EXPR valid_product() [L172] int retValue_acc ; [L175] retValue_acc = 1 [L176] return (retValue_acc); [L130] RET, EXPR valid_product() [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L134] FCALL setup() [L135] CALL runTest() [L114] CALL test() [L447] int splverifierCounter ; [L448] int tmp ; [L449] int tmp___0 ; [L450] int tmp___1 ; [L451] int tmp___2 ; [L454] splverifierCounter = 0 [L456] COND TRUE 1 [L458] COND TRUE splverifierCounter < 4 [L464] tmp = __VERIFIER_nondet_int() [L466] COND TRUE \read(tmp) [L468] CALL waterRise() [L532] COND TRUE waterLevel < 2 [L533] waterLevel = waterLevel + 1 [L468] RET waterRise() [L474] tmp___0 = __VERIFIER_nondet_int() [L476] COND FALSE !(\read(tmp___0)) [L484] tmp___2 = __VERIFIER_nondet_int() [L486] COND FALSE !(\read(tmp___2)) [L490] tmp___1 = __VERIFIER_nondet_int() [L492] COND TRUE \read(tmp___1) [L494] CALL stopSystem() [L434] COND FALSE !(\read(pumpRunning)) [L441] systemActive = 0 [L494] RET stopSystem() [L501] CALL timeShift() [L198] COND FALSE !(\read(pumpRunning)) [L205] COND FALSE !(\read(systemActive)) [L213] CALL __utac_acc__Specification3_spec__1() [L627] int tmp ; [L628] int tmp___0 ; [L629] int tmp___1 ; [L633] CALL, EXPR isMethaneLevelCritical() [L553] int retValue_acc ; [L556] retValue_acc = methaneLevelCritical [L557] return (retValue_acc); [L633] RET, EXPR isMethaneLevelCritical() [L633] tmp = isMethaneLevelCritical() [L635] COND FALSE !(\read(tmp)) [L639] CALL, EXPR getWaterLevel() [L585] int retValue_acc ; [L588] retValue_acc = waterLevel [L589] return (retValue_acc); [L639] RET, EXPR getWaterLevel() [L639] tmp___0 = getWaterLevel() [L641] COND TRUE tmp___0 == 2 [L643] CALL, EXPR isPumpRunning() [L348] int retValue_acc ; [L351] retValue_acc = pumpRunning [L352] return (retValue_acc); [L643] RET, EXPR isPumpRunning() [L643] tmp___1 = isPumpRunning() [L645] COND FALSE !(\read(tmp___1)) [L649] CALL __automaton_fail() [L621] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 44 procedures, 679 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 22.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1476 SDtfs, 2407 SDslu, 1540 SDs, 0 SdLazy, 4422 SolverSat, 823 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 7.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1249occurred 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: 1.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 367 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...