/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_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 19:57:37,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 19:57:37,747 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 19:57:37,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 19:57:37,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 19:57:37,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 19:57:37,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 19:57:37,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 19:57:37,793 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 19:57:37,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 19:57:37,796 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 19:57:37,797 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 19:57:37,798 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 19:57:37,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 19:57:37,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 19:57:37,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 19:57:37,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 19:57:37,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 19:57:37,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 19:57:37,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 19:57:37,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 19:57:37,822 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 19:57:37,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 19:57:37,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 19:57:37,828 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 19:57:37,828 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 19:57:37,828 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 19:57:37,829 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 19:57:37,830 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 19:57:37,831 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 19:57:37,831 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 19:57:37,832 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 19:57:37,833 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 19:57:37,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 19:57:37,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 19:57:37,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 19:57:37,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 19:57:37,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 19:57:37,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 19:57:37,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 19:57:37,839 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 19:57:37,840 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 19:57:37,852 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 19:57:37,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 19:57:37,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 19:57:37,855 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 19:57:37,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 19:57:37,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 19:57:37,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 19:57:37,855 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 19:57:37,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 19:57:37,856 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 19:57:37,856 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 19:57:37,856 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 19:57:37,857 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 19:57:37,857 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 19:57:37,857 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 19:57:37,857 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 19:57:37,858 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 19:57:37,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 19:57:37,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:57:37,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 19:57:37,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 19:57:37,859 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 19:57:37,859 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 19:57:38,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 19:57:38,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 19:57:38,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 19:57:38,235 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 19:57:38,235 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 19:57:38,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product47.cil.c [2020-10-23 19:57:38,312 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/341e84be4/47b45bde98fe457197683818282331c4/FLAGbeb0be5a7 [2020-10-23 19:57:39,008 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 19:57:39,009 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product47.cil.c [2020-10-23 19:57:39,030 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/341e84be4/47b45bde98fe457197683818282331c4/FLAGbeb0be5a7 [2020-10-23 19:57:39,345 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/341e84be4/47b45bde98fe457197683818282331c4 [2020-10-23 19:57:39,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 19:57:39,359 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 19:57:39,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 19:57:39,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 19:57:39,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 19:57:39,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:57:39" (1/1) ... [2020-10-23 19:57:39,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ed4a7a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:57:39, skipping insertion in model container [2020-10-23 19:57:39,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:57:39" (1/1) ... [2020-10-23 19:57:39,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 19:57:39,459 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 19:57:39,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:57:39,848 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 19:57:39,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:57:40,030 INFO L208 MainTranslator]: Completed translation [2020-10-23 19:57:40,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:57:40 WrapperNode [2020-10-23 19:57:40,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 19:57:40,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 19:57:40,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 19:57:40,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 19:57:40,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:57:40" (1/1) ... [2020-10-23 19:57:40,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:57:40" (1/1) ... [2020-10-23 19:57:40,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:57:40" (1/1) ... [2020-10-23 19:57:40,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:57:40" (1/1) ... [2020-10-23 19:57:40,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:57:40" (1/1) ... [2020-10-23 19:57:40,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:57:40" (1/1) ... [2020-10-23 19:57:40,118 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:57:40" (1/1) ... [2020-10-23 19:57:40,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 19:57:40,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 19:57:40,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 19:57:40,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 19:57:40,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:57:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:57:40,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 19:57:40,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 19:57:40,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 19:57:40,217 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 19:57:40,217 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 19:57:40,218 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 19:57:40,218 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 19:57:40,218 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 19:57:40,218 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 19:57:40,218 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 19:57:40,219 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 19:57:40,219 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 19:57:40,219 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 19:57:40,220 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 19:57:40,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 19:57:40,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 19:57:40,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 19:57:40,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 19:57:40,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 19:57:40,222 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 19:57:40,223 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 19:57:40,223 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 19:57:40,224 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 19:57:40,224 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-10-23 19:57:40,224 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 19:57:40,224 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-10-23 19:57:40,225 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 19:57:40,225 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 19:57:40,225 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 19:57:40,225 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 19:57:40,225 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 19:57:40,225 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 19:57:40,226 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-10-23 19:57:40,226 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 19:57:40,226 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 19:57:40,226 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 19:57:40,226 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 19:57:40,226 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 19:57:40,227 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 19:57:40,227 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 19:57:40,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-10-23 19:57:40,227 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 19:57:40,227 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 19:57:40,228 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 19:57:40,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 19:57:40,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 19:57:40,228 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 19:57:40,228 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 19:57:40,228 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 19:57:40,229 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 19:57:40,229 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 19:57:40,229 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 19:57:40,229 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 19:57:40,229 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 19:57:40,229 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 19:57:40,229 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 19:57:40,230 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 19:57:40,230 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 19:57:40,230 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 19:57:40,230 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 19:57:40,230 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 19:57:40,230 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 19:57:40,230 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 19:57:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 19:57:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 19:57:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 19:57:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 19:57:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 19:57:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 19:57:40,232 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 19:57:40,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 19:57:40,232 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 19:57:40,232 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 19:57:40,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 19:57:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 19:57:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 19:57:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 19:57:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-10-23 19:57:40,234 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 19:57:40,234 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 19:57:40,235 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 19:57:40,235 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 19:57:40,235 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 19:57:40,235 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 19:57:40,235 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 19:57:40,235 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-10-23 19:57:40,236 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 19:57:40,237 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 19:57:40,237 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 19:57:40,238 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-10-23 19:57:40,238 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 19:57:40,238 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-10-23 19:57:40,238 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 19:57:40,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 19:57:40,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 19:57:40,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 19:57:41,999 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 19:57:41,999 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 19:57:42,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:57:42 BoogieIcfgContainer [2020-10-23 19:57:42,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 19:57:42,007 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 19:57:42,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 19:57:42,012 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 19:57:42,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:57:39" (1/3) ... [2020-10-23 19:57:42,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b338b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:57:42, skipping insertion in model container [2020-10-23 19:57:42,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:57:40" (2/3) ... [2020-10-23 19:57:42,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b338b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:57:42, skipping insertion in model container [2020-10-23 19:57:42,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:57:42" (3/3) ... [2020-10-23 19:57:42,016 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product47.cil.c [2020-10-23 19:57:42,029 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 19:57:42,035 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 19:57:42,049 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 19:57:42,084 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 19:57:42,084 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 19:57:42,084 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 19:57:42,085 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 19:57:42,085 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 19:57:42,086 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 19:57:42,086 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 19:57:42,087 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 19:57:42,122 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states. [2020-10-23 19:57:42,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-23 19:57:42,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:57:42,163 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] [2020-10-23 19:57:42,165 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:57:42,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:57:42,174 INFO L82 PathProgramCache]: Analyzing trace with hash -372905331, now seen corresponding path program 1 times [2020-10-23 19:57:42,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:57:42,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179077086] [2020-10-23 19:57:42,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:57:42,265 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:57:42,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:43,238 WARN L193 SmtUtils]: Spent 594.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:57:43,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:57:43,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:43,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:57:43,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:43,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:57:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:43,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:57:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:43,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:57:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:43,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 19:57:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:43,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 19:57:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:43,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 19:57:43,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:43,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:57:43,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179077086] [2020-10-23 19:57:43,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:57:43,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 19:57:43,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469546524] [2020-10-23 19:57:43,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 19:57:43,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:57:43,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 19:57:43,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 19:57:43,414 INFO L87 Difference]: Start difference. First operand 336 states. Second operand 3 states. [2020-10-23 19:57:45,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:57:45,260 INFO L93 Difference]: Finished difference Result 533 states and 636 transitions. [2020-10-23 19:57:45,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 19:57:45,263 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-10-23 19:57:45,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:57:45,280 INFO L225 Difference]: With dead ends: 533 [2020-10-23 19:57:45,280 INFO L226 Difference]: Without dead ends: 327 [2020-10-23 19:57:45,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 19:57:45,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-23 19:57:45,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 282. [2020-10-23 19:57:45,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-23 19:57:45,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 309 transitions. [2020-10-23 19:57:45,467 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 309 transitions. Word has length 159 [2020-10-23 19:57:45,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:57:45,468 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 309 transitions. [2020-10-23 19:57:45,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 19:57:45,469 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 309 transitions. [2020-10-23 19:57:45,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-23 19:57:45,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:57:45,473 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] [2020-10-23 19:57:45,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 19:57:45,474 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:57:45,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:57:45,475 INFO L82 PathProgramCache]: Analyzing trace with hash 264301773, now seen corresponding path program 1 times [2020-10-23 19:57:45,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:57:45,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609213846] [2020-10-23 19:57:45,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:57:45,479 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:57:45,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:45,952 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:57:45,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:57:45,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:46,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:57:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:46,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:57:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:46,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:57:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:46,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:57:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:46,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-23 19:57:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:46,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:57:46,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:46,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-23 19:57:46,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:46,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:57:46,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609213846] [2020-10-23 19:57:46,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:57:46,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 19:57:46,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220373453] [2020-10-23 19:57:46,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 19:57:46,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:57:46,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 19:57:46,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:57:46,097 INFO L87 Difference]: Start difference. First operand 282 states and 309 transitions. Second operand 4 states. [2020-10-23 19:57:46,914 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:57:48,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:57:48,287 INFO L93 Difference]: Finished difference Result 441 states and 499 transitions. [2020-10-23 19:57:48,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 19:57:48,288 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-10-23 19:57:48,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:57:48,293 INFO L225 Difference]: With dead ends: 441 [2020-10-23 19:57:48,294 INFO L226 Difference]: Without dead ends: 310 [2020-10-23 19:57:48,296 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 [2020-10-23 19:57:48,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-23 19:57:48,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 272. [2020-10-23 19:57:48,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-10-23 19:57:48,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 296 transitions. [2020-10-23 19:57:48,410 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 296 transitions. Word has length 160 [2020-10-23 19:57:48,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:57:48,411 INFO L481 AbstractCegarLoop]: Abstraction has 272 states and 296 transitions. [2020-10-23 19:57:48,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 19:57:48,411 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 296 transitions. [2020-10-23 19:57:48,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-23 19:57:48,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:57:48,413 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] [2020-10-23 19:57:48,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 19:57:48,414 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:57:48,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:57:48,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1937027755, now seen corresponding path program 1 times [2020-10-23 19:57:48,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:57:48,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [156520147] [2020-10-23 19:57:48,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:57:48,418 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:57:48,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:48,934 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:57:48,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:57:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:48,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:57:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:49,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:57:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:49,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:57:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:49,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:57:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:49,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 19:57:49,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:49,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 19:57:49,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:49,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-23 19:57:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:49,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:57:49,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [156520147] [2020-10-23 19:57:49,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:57:49,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:57:49,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524035039] [2020-10-23 19:57:49,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:57:49,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:57:49,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:57:49,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:57:49,123 INFO L87 Difference]: Start difference. First operand 272 states and 296 transitions. Second operand 9 states. [2020-10-23 19:57:49,851 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:57:50,313 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:57:50,691 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:57:51,070 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:57:51,492 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:57:51,858 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:57:53,007 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:57:56,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:57:56,021 INFO L93 Difference]: Finished difference Result 733 states and 846 transitions. [2020-10-23 19:57:56,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 19:57:56,022 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 169 [2020-10-23 19:57:56,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:57:56,029 INFO L225 Difference]: With dead ends: 733 [2020-10-23 19:57:56,029 INFO L226 Difference]: Without dead ends: 576 [2020-10-23 19:57:56,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-23 19:57:56,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-10-23 19:57:56,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 503. [2020-10-23 19:57:56,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2020-10-23 19:57:56,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 566 transitions. [2020-10-23 19:57:56,311 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 566 transitions. Word has length 169 [2020-10-23 19:57:56,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:57:56,313 INFO L481 AbstractCegarLoop]: Abstraction has 503 states and 566 transitions. [2020-10-23 19:57:56,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:57:56,313 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 566 transitions. [2020-10-23 19:57:56,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-23 19:57:56,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:57:56,320 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] [2020-10-23 19:57:56,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 19:57:56,321 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:57:56,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:57:56,323 INFO L82 PathProgramCache]: Analyzing trace with hash -415538468, now seen corresponding path program 1 times [2020-10-23 19:57:56,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:57:56,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593132663] [2020-10-23 19:57:56,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:57:56,331 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:57:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:56,772 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:57:56,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:57:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:56,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:57:56,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:56,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:57:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:56,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:57:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:56,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:57:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:56,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-23 19:57:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:56,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-23 19:57:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:56,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-23 19:57:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:56,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-23 19:57:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:57:56,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:57:56,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593132663] [2020-10-23 19:57:56,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:57:56,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:57:56,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916824662] [2020-10-23 19:57:56,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:57:56,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:57:56,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:57:56,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:57:56,948 INFO L87 Difference]: Start difference. First operand 503 states and 566 transitions. Second operand 9 states. [2020-10-23 19:57:57,551 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:57:59,916 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:58:00,355 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:58:00,768 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:58:01,188 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:58:01,559 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:58:01,943 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:58:02,296 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:58:03,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:58:03,632 INFO L93 Difference]: Finished difference Result 1365 states and 1648 transitions. [2020-10-23 19:58:03,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-23 19:58:03,633 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 178 [2020-10-23 19:58:03,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:58:03,643 INFO L225 Difference]: With dead ends: 1365 [2020-10-23 19:58:03,643 INFO L226 Difference]: Without dead ends: 977 [2020-10-23 19:58:03,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-23 19:58:03,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2020-10-23 19:58:04,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 873. [2020-10-23 19:58:04,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 873 states. [2020-10-23 19:58:04,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1007 transitions. [2020-10-23 19:58:04,171 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1007 transitions. Word has length 178 [2020-10-23 19:58:04,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:58:04,172 INFO L481 AbstractCegarLoop]: Abstraction has 873 states and 1007 transitions. [2020-10-23 19:58:04,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:58:04,172 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1007 transitions. [2020-10-23 19:58:04,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-23 19:58:04,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:58:04,180 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:58:04,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 19:58:04,180 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:58:04,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:58:04,181 INFO L82 PathProgramCache]: Analyzing trace with hash 730042814, now seen corresponding path program 1 times [2020-10-23 19:58:04,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:58:04,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57208772] [2020-10-23 19:58:04,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:58:04,184 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:58:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:04,586 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:58:04,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:58:04,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:04,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:58:04,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:04,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:58:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:04,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:58:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:04,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:58:04,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:04,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-23 19:58:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:04,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 19:58:04,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:04,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-23 19:58:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:04,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-23 19:58:04,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:04,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-23 19:58:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:58:04,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:58:04,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57208772] [2020-10-23 19:58:04,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:58:04,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 19:58:04,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099578337] [2020-10-23 19:58:04,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 19:58:04,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:58:04,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 19:58:04,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-23 19:58:04,754 INFO L87 Difference]: Start difference. First operand 873 states and 1007 transitions. Second operand 6 states. [2020-10-23 19:58:05,392 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:58:08,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:58:08,159 INFO L93 Difference]: Finished difference Result 2014 states and 2424 transitions. [2020-10-23 19:58:08,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-23 19:58:08,160 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 183 [2020-10-23 19:58:08,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:58:08,168 INFO L225 Difference]: With dead ends: 2014 [2020-10-23 19:58:08,168 INFO L226 Difference]: Without dead ends: 1256 [2020-10-23 19:58:08,171 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 [2020-10-23 19:58:08,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2020-10-23 19:58:08,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1158. [2020-10-23 19:58:08,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1158 states. [2020-10-23 19:58:08,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1321 transitions. [2020-10-23 19:58:08,743 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1321 transitions. Word has length 183 [2020-10-23 19:58:08,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:58:08,744 INFO L481 AbstractCegarLoop]: Abstraction has 1158 states and 1321 transitions. [2020-10-23 19:58:08,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 19:58:08,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1321 transitions. [2020-10-23 19:58:08,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-23 19:58:08,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:58:08,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:58:08,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 19:58:08,748 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:58:08,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:58:08,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1512211456, now seen corresponding path program 1 times [2020-10-23 19:58:08,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:58:08,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065503942] [2020-10-23 19:58:08,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:58:08,752 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:58:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:58:08,862 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:58:08,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:58:08,932 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:58:09,122 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 19:58:09,122 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 19:58:09,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 19:58:09,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 07:58:09 BoogieIcfgContainer [2020-10-23 19:58:09,145 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 19:58:09,147 INFO L168 Benchmark]: Toolchain (without parser) took 29794.35 ms. Allocated memory was 156.2 MB in the beginning and 602.9 MB in the end (delta: 446.7 MB). Free memory was 130.9 MB in the beginning and 506.7 MB in the end (delta: -375.8 MB). Peak memory consumption was 71.7 MB. Max. memory is 8.0 GB. [2020-10-23 19:58:09,148 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 156.2 MB. Free memory is still 130.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 19:58:09,149 INFO L168 Benchmark]: CACSL2BoogieTranslator took 666.13 ms. Allocated memory is still 156.2 MB. Free memory was 130.3 MB in the beginning and 109.2 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-23 19:58:09,149 INFO L168 Benchmark]: Boogie Preprocessor took 100.07 ms. Allocated memory is still 156.2 MB. Free memory was 109.2 MB in the beginning and 105.1 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-23 19:58:09,150 INFO L168 Benchmark]: RCFGBuilder took 1872.69 ms. Allocated memory was 156.2 MB in the beginning and 200.3 MB in the end (delta: 44.0 MB). Free memory was 105.1 MB in the beginning and 144.0 MB in the end (delta: -38.9 MB). Peak memory consumption was 32.8 MB. Max. memory is 8.0 GB. [2020-10-23 19:58:09,151 INFO L168 Benchmark]: TraceAbstraction took 27137.78 ms. Allocated memory was 200.3 MB in the beginning and 602.9 MB in the end (delta: 402.7 MB). Free memory was 143.5 MB in the beginning and 506.7 MB in the end (delta: -363.2 MB). Peak memory consumption was 40.0 MB. Max. memory is 8.0 GB. [2020-10-23 19:58:09,155 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 156.2 MB. Free memory is still 130.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 666.13 ms. Allocated memory is still 156.2 MB. Free memory was 130.3 MB in the beginning and 109.2 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 100.07 ms. Allocated memory is still 156.2 MB. Free memory was 109.2 MB in the beginning and 105.1 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1872.69 ms. Allocated memory was 156.2 MB in the beginning and 200.3 MB in the end (delta: 44.0 MB). Free memory was 105.1 MB in the beginning and 144.0 MB in the end (delta: -38.9 MB). Peak memory consumption was 32.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 27137.78 ms. Allocated memory was 200.3 MB in the beginning and 602.9 MB in the end (delta: 402.7 MB). Free memory was 143.5 MB in the beginning and 506.7 MB in the end (delta: -363.2 MB). Peak memory consumption was 40.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L51] int cleanupTimeShifts = 4; [L359] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L631] int pumpRunning = 0; [L632] int systemActive = 1; [L843] int waterLevel = 1; [L844] int methaneLevelCritical = 0; [L132] int retValue_acc ; [L133] int tmp ; [L137] FCALL select_helpers() [L138] FCALL select_features() [L139] CALL, EXPR valid_product() [L181] int retValue_acc ; [L184] retValue_acc = 1 [L185] return (retValue_acc); [L139] RET, EXPR valid_product() [L139] tmp = valid_product() [L141] COND TRUE \read(tmp) [L143] FCALL setup() [L144] CALL runTest() [L123] CALL test() [L558] int splverifierCounter ; [L559] int tmp ; [L560] int tmp___0 ; [L561] int tmp___1 ; [L562] int tmp___2 ; [L565] splverifierCounter = 0 [L567] COND TRUE 1 [L569] COND TRUE splverifierCounter < 4 [L575] tmp = __VERIFIER_nondet_int() [L577] COND TRUE \read(tmp) [L579] CALL waterRise() [L861] COND TRUE waterLevel < 2 [L862] waterLevel = waterLevel + 1 [L579] RET waterRise() [L585] tmp___0 = __VERIFIER_nondet_int() [L587] COND FALSE !(\read(tmp___0)) [L595] tmp___2 = __VERIFIER_nondet_int() [L597] COND FALSE !(\read(tmp___2)) [L601] tmp___1 = __VERIFIER_nondet_int() [L603] COND TRUE \read(tmp___1) [L605] CALL stopSystem() [L830] COND FALSE !(\read(pumpRunning)) [L837] systemActive = 0 [L605] RET stopSystem() [L612] CALL timeShift() [L639] COND FALSE !(\read(pumpRunning)) [L646] COND FALSE !(\read(systemActive)) [L654] CALL __utac_acc__Specification3_spec__1() [L938] int tmp ; [L939] int tmp___0 ; [L940] int tmp___1 ; [L944] CALL, EXPR isMethaneLevelCritical() [L882] int retValue_acc ; [L885] retValue_acc = methaneLevelCritical [L886] return (retValue_acc); [L944] RET, EXPR isMethaneLevelCritical() [L944] tmp = isMethaneLevelCritical() [L946] COND FALSE !(\read(tmp)) [L950] CALL, EXPR getWaterLevel() [L914] int retValue_acc ; [L917] retValue_acc = waterLevel [L918] return (retValue_acc); [L950] RET, EXPR getWaterLevel() [L950] tmp___0 = getWaterLevel() [L952] COND TRUE tmp___0 == 2 [L954] CALL, EXPR isPumpRunning() [L763] int retValue_acc ; [L766] retValue_acc = pumpRunning [L767] return (retValue_acc); [L954] RET, EXPR isPumpRunning() [L954] tmp___1 = isPumpRunning() [L956] COND FALSE !(\read(tmp___1)) [L960] CALL __automaton_fail() [L46] CALL reach_error() [L3] __assert_fail("0", "minepump_spec3_product47.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 652 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 21.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1341 SDtfs, 2101 SDslu, 1523 SDs, 0 SdLazy, 3913 SolverSat, 727 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 8.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1158occurred 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, 358 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...