/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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_spec2_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:11:35,747 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:11:35,752 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:11:35,798 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:11:35,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:11:35,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:11:35,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:11:35,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:11:35,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:11:35,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:11:35,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:11:35,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:11:35,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:11:35,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:11:35,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:11:35,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:11:35,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:11:35,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:11:35,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:11:35,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:11:35,848 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:11:35,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:11:35,851 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:11:35,852 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:11:35,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:11:35,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:11:35,855 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:11:35,856 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:11:35,856 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:11:35,857 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:11:35,857 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:11:35,858 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:11:35,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:11:35,860 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:11:35,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:11:35,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:11:35,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:11:35,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:11:35,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:11:35,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:11:35,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:11:35,866 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 15:11:35,877 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:11:35,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:11:35,879 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:11:35,879 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:11:35,880 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:11:35,880 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:11:35,880 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:11:35,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:11:35,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:11:35,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:11:35,881 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:11:35,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:11:35,881 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:11:35,881 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:11:35,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:11:35,882 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:11:35,882 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:11:35,882 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:11:35,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:11:35,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:11:35,883 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:11:35,883 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:11:35,884 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:11:36,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:11:36,331 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:11:36,334 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:11:36,336 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:11:36,337 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:11:36,338 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product36.cil.c [2020-09-04 15:11:36,428 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c59f1478/69fadc214ee44804bbdbf559ca4a16fb/FLAGa95439a6c [2020-09-04 15:11:37,053 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:11:37,054 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product36.cil.c [2020-09-04 15:11:37,069 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c59f1478/69fadc214ee44804bbdbf559ca4a16fb/FLAGa95439a6c [2020-09-04 15:11:37,329 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c59f1478/69fadc214ee44804bbdbf559ca4a16fb [2020-09-04 15:11:37,342 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:11:37,344 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:11:37,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:11:37,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:11:37,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:11:37,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:11:37" (1/1) ... [2020-09-04 15:11:37,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d085505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:11:37, skipping insertion in model container [2020-09-04 15:11:37,359 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:11:37" (1/1) ... [2020-09-04 15:11:37,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:11:37,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:11:37,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:11:37,910 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:11:38,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:11:38,055 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:11:38,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:11:38 WrapperNode [2020-09-04 15:11:38,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:11:38,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:11:38,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:11:38,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:11:38,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:11:38" (1/1) ... [2020-09-04 15:11:38,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:11:38" (1/1) ... [2020-09-04 15:11:38,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:11:38" (1/1) ... [2020-09-04 15:11:38,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:11:38" (1/1) ... [2020-09-04 15:11:38,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:11:38" (1/1) ... [2020-09-04 15:11:38,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:11:38" (1/1) ... [2020-09-04 15:11:38,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:11:38" (1/1) ... [2020-09-04 15:11:38,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:11:38,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:11:38,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:11:38,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:11:38,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:11:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 15:11:38,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:11:38,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:11:38,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:11:38,230 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:11:38,230 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:11:38,231 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:11:38,231 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:11:38,231 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:11:38,231 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:11:38,231 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-04 15:11:38,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:11:38,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:11:38,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:11:38,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:11:38,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:11:38,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:11:38,233 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:11:38,233 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:11:38,233 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:11:38,234 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:11:38,234 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:11:38,234 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:11:38,234 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:11:38,234 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:11:38,235 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:11:38,235 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:11:38,235 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 15:11:38,235 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:11:38,235 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:11:38,236 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:11:38,236 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:11:38,236 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:11:38,236 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:11:38,236 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-04 15:11:38,236 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-04 15:11:38,237 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-04 15:11:38,237 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:11:38,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:11:38,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-09-04 15:11:38,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-09-04 15:11:38,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:11:38,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:11:38,238 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:11:38,238 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:11:38,238 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:11:38,238 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:11:38,238 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:11:38,239 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:11:38,239 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:11:38,239 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-04 15:11:38,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:11:38,239 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:11:38,239 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:11:38,240 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:11:38,240 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:11:38,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:11:38,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:11:38,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:11:38,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:11:38,240 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:11:38,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:11:38,241 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:11:38,241 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:11:38,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:11:38,241 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:11:38,241 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:11:38,242 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:11:38,242 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:11:38,242 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:11:38,242 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:11:38,242 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:11:38,242 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:11:38,242 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:11:38,243 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:11:38,243 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:11:38,243 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:11:38,243 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-09-04 15:11:38,243 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:11:38,243 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:11:38,244 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:11:38,244 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:11:38,244 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:11:38,244 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:11:38,244 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-04 15:11:38,245 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-04 15:11:38,245 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-09-04 15:11:38,245 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:11:38,245 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 15:11:38,245 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-04 15:11:38,245 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:11:38,246 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:11:38,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:11:38,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:11:38,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:11:39,336 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:11:39,337 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:11:39,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:11:39 BoogieIcfgContainer [2020-09-04 15:11:39,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:11:39,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:11:39,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:11:39,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:11:39,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:11:37" (1/3) ... [2020-09-04 15:11:39,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1754da11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:11:39, skipping insertion in model container [2020-09-04 15:11:39,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:11:38" (2/3) ... [2020-09-04 15:11:39,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1754da11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:11:39, skipping insertion in model container [2020-09-04 15:11:39,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:11:39" (3/3) ... [2020-09-04 15:11:39,354 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product36.cil.c [2020-09-04 15:11:39,365 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:11:39,374 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:11:39,397 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:11:39,426 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:11:39,427 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:11:39,427 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:11:39,427 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:11:39,427 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:11:39,427 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:11:39,428 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:11:39,428 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:11:39,452 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states. [2020-09-04 15:11:39,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-04 15:11:39,476 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:11:39,478 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] [2020-09-04 15:11:39,478 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:11:39,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:11:39,486 INFO L82 PathProgramCache]: Analyzing trace with hash 581335990, now seen corresponding path program 1 times [2020-09-04 15:11:39,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:11:39,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61635268] [2020-09-04 15:11:39,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:11:39,592 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:11:39,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:40,259 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:11:40,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:11:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:40,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:11:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:40,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:11:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:40,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:11:40,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:40,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:11:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:40,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:11:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:40,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 15:11:40,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:40,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-04 15:11:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:40,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:11:40,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61635268] [2020-09-04 15:11:40,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:11:40,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:11:40,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83798584] [2020-09-04 15:11:40,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:11:40,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:11:40,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:11:40,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:11:40,514 INFO L87 Difference]: Start difference. First operand 306 states. Second operand 4 states. [2020-09-04 15:11:41,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:11:41,825 INFO L93 Difference]: Finished difference Result 463 states and 549 transitions. [2020-09-04 15:11:41,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 15:11:41,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-09-04 15:11:41,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:11:41,849 INFO L225 Difference]: With dead ends: 463 [2020-09-04 15:11:41,849 INFO L226 Difference]: Without dead ends: 299 [2020-09-04 15:11:41,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:11:41,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-09-04 15:11:42,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 249. [2020-09-04 15:11:42,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-09-04 15:11:42,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 269 transitions. [2020-09-04 15:11:42,008 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 269 transitions. Word has length 148 [2020-09-04 15:11:42,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:11:42,009 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 269 transitions. [2020-09-04 15:11:42,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:11:42,010 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 269 transitions. [2020-09-04 15:11:42,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-04 15:11:42,014 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:11:42,015 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] [2020-09-04 15:11:42,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:11:42,015 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:11:42,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:11:42,016 INFO L82 PathProgramCache]: Analyzing trace with hash 170641553, now seen corresponding path program 1 times [2020-09-04 15:11:42,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:11:42,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050112299] [2020-09-04 15:11:42,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:11:42,020 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:11:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:42,381 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:11:42,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:11:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:42,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:11:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:42,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:11:42,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:42,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:11:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:42,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:11:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:42,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:11:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:42,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-04 15:11:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:42,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:11:42,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:42,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:11:42,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050112299] [2020-09-04 15:11:42,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:11:42,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 15:11:42,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628317560] [2020-09-04 15:11:42,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 15:11:42,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:11:42,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 15:11:42,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 15:11:42,514 INFO L87 Difference]: Start difference. First operand 249 states and 269 transitions. Second operand 5 states. [2020-09-04 15:11:43,234 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:11:44,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:11:44,248 INFO L93 Difference]: Finished difference Result 379 states and 430 transitions. [2020-09-04 15:11:44,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 15:11:44,250 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-09-04 15:11:44,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:11:44,254 INFO L225 Difference]: With dead ends: 379 [2020-09-04 15:11:44,255 INFO L226 Difference]: Without dead ends: 288 [2020-09-04 15:11:44,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-04 15:11:44,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-09-04 15:11:44,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 239. [2020-09-04 15:11:44,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-09-04 15:11:44,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 256 transitions. [2020-09-04 15:11:44,333 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 256 transitions. Word has length 149 [2020-09-04 15:11:44,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:11:44,333 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 256 transitions. [2020-09-04 15:11:44,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 15:11:44,334 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 256 transitions. [2020-09-04 15:11:44,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-04 15:11:44,336 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:11:44,336 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] [2020-09-04 15:11:44,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:11:44,337 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:11:44,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:11:44,337 INFO L82 PathProgramCache]: Analyzing trace with hash -896171093, now seen corresponding path program 1 times [2020-09-04 15:11:44,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:11:44,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352625294] [2020-09-04 15:11:44,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:11:44,341 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:11:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:44,780 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:11:44,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:11:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:44,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:11:44,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:44,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:11:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:44,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:11:44,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:44,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:11:44,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:44,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:11:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:44,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:11:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:44,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-04 15:11:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:44,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-04 15:11:44,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:45,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:11:45,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352625294] [2020-09-04 15:11:45,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:11:45,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 15:11:45,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430137368] [2020-09-04 15:11:45,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 15:11:45,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:11:45,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 15:11:45,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:11:45,018 INFO L87 Difference]: Start difference. First operand 239 states and 256 transitions. Second operand 11 states. [2020-09-04 15:11:45,786 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:11:46,192 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:11:46,480 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-04 15:11:46,829 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:11:47,141 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:11:47,428 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:11:48,497 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:11:50,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:11:50,945 INFO L93 Difference]: Finished difference Result 654 states and 768 transitions. [2020-09-04 15:11:50,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-04 15:11:50,946 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 162 [2020-09-04 15:11:50,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:11:50,953 INFO L225 Difference]: With dead ends: 654 [2020-09-04 15:11:50,953 INFO L226 Difference]: Without dead ends: 530 [2020-09-04 15:11:50,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2020-09-04 15:11:50,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2020-09-04 15:11:51,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 415. [2020-09-04 15:11:51,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-09-04 15:11:51,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 460 transitions. [2020-09-04 15:11:51,148 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 460 transitions. Word has length 162 [2020-09-04 15:11:51,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:11:51,152 INFO L479 AbstractCegarLoop]: Abstraction has 415 states and 460 transitions. [2020-09-04 15:11:51,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 15:11:51,154 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 460 transitions. [2020-09-04 15:11:51,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-04 15:11:51,156 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:11:51,156 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] [2020-09-04 15:11:51,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:11:51,157 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:11:51,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:11:51,159 INFO L82 PathProgramCache]: Analyzing trace with hash 600016420, now seen corresponding path program 1 times [2020-09-04 15:11:51,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:11:51,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898144844] [2020-09-04 15:11:51,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:11:51,167 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:11:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:51,539 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:11:51,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:11:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:51,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:11:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:51,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:11:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:51,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:11:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:51,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:11:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:51,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:11:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:51,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 15:11:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:51,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-04 15:11:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:51,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-04 15:11:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:51,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:11:51,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898144844] [2020-09-04 15:11:51,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:11:51,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:11:51,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809339298] [2020-09-04 15:11:51,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:11:51,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:11:51,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:11:51,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:11:51,763 INFO L87 Difference]: Start difference. First operand 415 states and 460 transitions. Second operand 10 states. [2020-09-04 15:11:52,452 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:11:54,008 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:11:54,335 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:11:54,700 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:11:55,055 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:11:55,364 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:11:55,653 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:11:55,950 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:11:56,420 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:11:57,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:11:57,672 INFO L93 Difference]: Finished difference Result 1135 states and 1377 transitions. [2020-09-04 15:11:57,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-04 15:11:57,673 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 167 [2020-09-04 15:11:57,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:11:57,681 INFO L225 Difference]: With dead ends: 1135 [2020-09-04 15:11:57,681 INFO L226 Difference]: Without dead ends: 835 [2020-09-04 15:11:57,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-09-04 15:11:57,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2020-09-04 15:11:57,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 667. [2020-09-04 15:11:57,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 667 states. [2020-09-04 15:11:57,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 749 transitions. [2020-09-04 15:11:57,905 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 749 transitions. Word has length 167 [2020-09-04 15:11:57,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:11:57,905 INFO L479 AbstractCegarLoop]: Abstraction has 667 states and 749 transitions. [2020-09-04 15:11:57,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:11:57,905 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 749 transitions. [2020-09-04 15:11:57,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-04 15:11:57,909 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:11:57,909 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] [2020-09-04 15:11:57,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:11:57,909 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:11:57,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:11:57,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1379081180, now seen corresponding path program 1 times [2020-09-04 15:11:57,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:11:57,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993848837] [2020-09-04 15:11:57,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:11:57,913 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:11:57,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:58,335 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:11:58,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:11:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:58,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:11:58,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:58,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:11:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:58,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:11:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:58,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:11:58,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:58,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:11:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:58,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 15:11:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:58,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-04 15:11:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:58,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-04 15:11:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:58,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 15:11:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:11:58,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:11:58,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993848837] [2020-09-04 15:11:58,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:11:58,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 15:11:58,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479051768] [2020-09-04 15:11:58,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 15:11:58,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:11:58,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 15:11:58,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:11:58,571 INFO L87 Difference]: Start difference. First operand 667 states and 749 transitions. Second operand 11 states. [2020-09-04 15:11:59,123 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:00,632 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:00,936 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:12:01,294 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:01,658 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:12:01,974 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:02,696 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:03,017 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:03,424 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:04,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:04,673 INFO L93 Difference]: Finished difference Result 1773 states and 2187 transitions. [2020-09-04 15:12:04,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-04 15:12:04,674 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 172 [2020-09-04 15:12:04,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:04,686 INFO L225 Difference]: With dead ends: 1773 [2020-09-04 15:12:04,686 INFO L226 Difference]: Without dead ends: 1221 [2020-09-04 15:12:04,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=283, Invalid=773, Unknown=0, NotChecked=0, Total=1056 [2020-09-04 15:12:04,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2020-09-04 15:12:05,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 933. [2020-09-04 15:12:05,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 933 states. [2020-09-04 15:12:05,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1055 transitions. [2020-09-04 15:12:05,079 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1055 transitions. Word has length 172 [2020-09-04 15:12:05,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:05,080 INFO L479 AbstractCegarLoop]: Abstraction has 933 states and 1055 transitions. [2020-09-04 15:12:05,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 15:12:05,080 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1055 transitions. [2020-09-04 15:12:05,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-04 15:12:05,084 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:05,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:12:05,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:12:05,085 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:05,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:05,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1429417703, now seen corresponding path program 1 times [2020-09-04 15:12:05,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:05,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909237713] [2020-09-04 15:12:05,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:05,089 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:05,415 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:05,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:05,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:05,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:05,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:05,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:05,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:05,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 15:12:05,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:05,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 15:12:05,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:05,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:12:05,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:05,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:12:05,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:05,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:12:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:05,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:12:05,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:05,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-09-04 15:12:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:05,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 15:12:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:05,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:12:05,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909237713] [2020-09-04 15:12:05,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:05,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-04 15:12:05,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133710549] [2020-09-04 15:12:05,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 15:12:05,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:05,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 15:12:05,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-04 15:12:05,617 INFO L87 Difference]: Start difference. First operand 933 states and 1055 transitions. Second operand 12 states. [2020-09-04 15:12:07,238 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:07,556 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 15:12:07,897 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-09-04 15:12:08,249 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:08,574 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:12:08,867 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:10,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:10,932 INFO L93 Difference]: Finished difference Result 2398 states and 3007 transitions. [2020-09-04 15:12:10,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-04 15:12:10,933 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 200 [2020-09-04 15:12:10,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:10,944 INFO L225 Difference]: With dead ends: 2398 [2020-09-04 15:12:10,944 INFO L226 Difference]: Without dead ends: 1580 [2020-09-04 15:12:10,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=231, Invalid=581, Unknown=0, NotChecked=0, Total=812 [2020-09-04 15:12:10,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2020-09-04 15:12:11,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 971. [2020-09-04 15:12:11,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2020-09-04 15:12:11,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1093 transitions. [2020-09-04 15:12:11,424 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1093 transitions. Word has length 200 [2020-09-04 15:12:11,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:11,424 INFO L479 AbstractCegarLoop]: Abstraction has 971 states and 1093 transitions. [2020-09-04 15:12:11,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 15:12:11,425 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1093 transitions. [2020-09-04 15:12:11,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-04 15:12:11,430 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:11,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:12:11,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 15:12:11,430 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:11,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:11,431 INFO L82 PathProgramCache]: Analyzing trace with hash 289623879, now seen corresponding path program 1 times [2020-09-04 15:12:11,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:11,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298042931] [2020-09-04 15:12:11,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:11,434 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:11,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:11,770 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:11,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:11,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:11,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:11,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:11,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:11,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:11,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:11,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:11,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:11,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 15:12:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:11,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 15:12:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:11,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:12:11,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:11,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:12:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:11,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:12:11,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:11,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:12:11,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:11,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-09-04 15:12:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:11,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 15:12:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:12,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:12:12,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298042931] [2020-09-04 15:12:12,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:12,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-04 15:12:12,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535639726] [2020-09-04 15:12:12,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-04 15:12:12,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:12,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-04 15:12:12,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-09-04 15:12:12,022 INFO L87 Difference]: Start difference. First operand 971 states and 1093 transitions. Second operand 15 states. [2020-09-04 15:12:12,654 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:12,948 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 15:12:13,254 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:13,553 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:12:13,891 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:15,020 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:15,340 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:12:15,689 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:16,029 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:12:16,334 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:18,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:18,768 INFO L93 Difference]: Finished difference Result 2480 states and 3145 transitions. [2020-09-04 15:12:18,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-04 15:12:18,769 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 200 [2020-09-04 15:12:18,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:18,780 INFO L225 Difference]: With dead ends: 2480 [2020-09-04 15:12:18,780 INFO L226 Difference]: Without dead ends: 1624 [2020-09-04 15:12:18,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=314, Invalid=946, Unknown=0, NotChecked=0, Total=1260 [2020-09-04 15:12:18,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1624 states. [2020-09-04 15:12:19,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1624 to 995. [2020-09-04 15:12:19,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-09-04 15:12:19,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1117 transitions. [2020-09-04 15:12:19,295 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1117 transitions. Word has length 200 [2020-09-04 15:12:19,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:19,295 INFO L479 AbstractCegarLoop]: Abstraction has 995 states and 1117 transitions. [2020-09-04 15:12:19,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-04 15:12:19,295 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1117 transitions. [2020-09-04 15:12:19,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-04 15:12:19,298 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:19,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:12:19,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 15:12:19,299 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:19,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:19,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1841498812, now seen corresponding path program 1 times [2020-09-04 15:12:19,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:19,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010625382] [2020-09-04 15:12:19,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:19,302 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:19,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:19,690 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:19,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:19,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:19,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:19,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:19,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:19,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:19,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:19,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:19,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:19,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:19,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 15:12:19,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:19,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 15:12:19,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:19,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:12:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:19,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:12:19,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:19,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:12:19,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:19,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:12:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:19,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-09-04 15:12:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:19,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 15:12:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:19,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:12:19,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010625382] [2020-09-04 15:12:19,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:19,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:12:19,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493585498] [2020-09-04 15:12:19,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:12:19,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:19,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:12:19,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:12:19,913 INFO L87 Difference]: Start difference. First operand 995 states and 1117 transitions. Second operand 9 states. [2020-09-04 15:12:20,486 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:21,167 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:25,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:25,286 INFO L93 Difference]: Finished difference Result 4015 states and 5133 transitions. [2020-09-04 15:12:25,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-04 15:12:25,287 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 200 [2020-09-04 15:12:25,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:25,306 INFO L225 Difference]: With dead ends: 4015 [2020-09-04 15:12:25,306 INFO L226 Difference]: Without dead ends: 3135 [2020-09-04 15:12:25,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=338, Invalid=1302, Unknown=0, NotChecked=0, Total=1640 [2020-09-04 15:12:25,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3135 states. [2020-09-04 15:12:26,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3135 to 2147. [2020-09-04 15:12:26,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2147 states. [2020-09-04 15:12:26,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 2443 transitions. [2020-09-04 15:12:26,334 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 2443 transitions. Word has length 200 [2020-09-04 15:12:26,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:26,335 INFO L479 AbstractCegarLoop]: Abstraction has 2147 states and 2443 transitions. [2020-09-04 15:12:26,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:12:26,335 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 2443 transitions. [2020-09-04 15:12:26,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-04 15:12:26,340 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:26,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:12:26,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 15:12:26,341 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:26,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:26,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1365562748, now seen corresponding path program 1 times [2020-09-04 15:12:26,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:26,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227531694] [2020-09-04 15:12:26,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:26,345 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:26,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,677 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:26,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:26,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:26,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:12:26,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 15:12:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-04 15:12:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-09-04 15:12:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:12:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:12:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:12:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-04 15:12:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-04 15:12:26,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:12:26,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227531694] [2020-09-04 15:12:26,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:26,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:12:26,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128537733] [2020-09-04 15:12:26,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:12:26,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:26,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:12:26,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:12:26,831 INFO L87 Difference]: Start difference. First operand 2147 states and 2443 transitions. Second operand 9 states. [2020-09-04 15:12:27,398 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:32,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:32,708 INFO L93 Difference]: Finished difference Result 4982 states and 6473 transitions. [2020-09-04 15:12:32,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-09-04 15:12:32,709 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 205 [2020-09-04 15:12:32,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:32,738 INFO L225 Difference]: With dead ends: 4982 [2020-09-04 15:12:32,738 INFO L226 Difference]: Without dead ends: 4979 [2020-09-04 15:12:32,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=373, Invalid=1267, Unknown=0, NotChecked=0, Total=1640 [2020-09-04 15:12:32,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4979 states. [2020-09-04 15:12:34,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4979 to 3376. [2020-09-04 15:12:34,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3376 states. [2020-09-04 15:12:34,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3376 states to 3376 states and 3929 transitions. [2020-09-04 15:12:34,596 INFO L78 Accepts]: Start accepts. Automaton has 3376 states and 3929 transitions. Word has length 205 [2020-09-04 15:12:34,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:34,597 INFO L479 AbstractCegarLoop]: Abstraction has 3376 states and 3929 transitions. [2020-09-04 15:12:34,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:12:34,597 INFO L276 IsEmpty]: Start isEmpty. Operand 3376 states and 3929 transitions. [2020-09-04 15:12:34,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-09-04 15:12:34,606 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:34,607 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:12:34,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 15:12:34,607 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:34,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:34,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1316661854, now seen corresponding path program 1 times [2020-09-04 15:12:34,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:34,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126792056] [2020-09-04 15:12:34,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:34,648 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:12:34,751 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:12:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:12:34,862 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:12:35,179 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:12:35,179 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:12:35,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 15:12:35,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:12:35 BoogieIcfgContainer [2020-09-04 15:12:35,214 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:12:35,216 INFO L168 Benchmark]: Toolchain (without parser) took 57872.20 ms. Allocated memory was 140.5 MB in the beginning and 1.2 GB in the end (delta: 1.1 GB). Free memory was 102.0 MB in the beginning and 345.0 MB in the end (delta: -243.0 MB). Peak memory consumption was 840.2 MB. Max. memory is 7.1 GB. [2020-09-04 15:12:35,221 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 15:12:35,222 INFO L168 Benchmark]: CACSL2BoogieTranslator took 709.45 ms. Allocated memory was 140.5 MB in the beginning and 205.0 MB in the end (delta: 64.5 MB). Free memory was 101.6 MB in the beginning and 173.4 MB in the end (delta: -71.8 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2020-09-04 15:12:35,222 INFO L168 Benchmark]: Boogie Preprocessor took 93.19 ms. Allocated memory is still 205.0 MB. Free memory was 173.4 MB in the beginning and 169.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-09-04 15:12:35,226 INFO L168 Benchmark]: RCFGBuilder took 1193.14 ms. Allocated memory was 205.0 MB in the beginning and 235.4 MB in the end (delta: 30.4 MB). Free memory was 169.5 MB in the beginning and 173.4 MB in the end (delta: -4.0 MB). Peak memory consumption was 81.1 MB. Max. memory is 7.1 GB. [2020-09-04 15:12:35,229 INFO L168 Benchmark]: TraceAbstraction took 55868.20 ms. Allocated memory was 235.4 MB in the beginning and 1.2 GB in the end (delta: 988.3 MB). Free memory was 173.4 MB in the beginning and 345.0 MB in the end (delta: -171.6 MB). Peak memory consumption was 816.7 MB. Max. memory is 7.1 GB. [2020-09-04 15:12:35,232 INFO L336 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 140.5 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 709.45 ms. Allocated memory was 140.5 MB in the beginning and 205.0 MB in the end (delta: 64.5 MB). Free memory was 101.6 MB in the beginning and 173.4 MB in the end (delta: -71.8 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 93.19 ms. Allocated memory is still 205.0 MB. Free memory was 173.4 MB in the beginning and 169.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1193.14 ms. Allocated memory was 205.0 MB in the beginning and 235.4 MB in the end (delta: 30.4 MB). Free memory was 169.5 MB in the beginning and 173.4 MB in the end (delta: -4.0 MB). Peak memory consumption was 81.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 55868.20 ms. Allocated memory was 235.4 MB in the beginning and 1.2 GB in the end (delta: 988.3 MB). Free memory was 173.4 MB in the beginning and 345.0 MB in the end (delta: -171.6 MB). Peak memory consumption was 816.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 900]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L310] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L545] int cleanupTimeShifts = 4; [L651] int pumpRunning = 0; [L652] int systemActive = 1; [L905] int methAndRunningLastTime ; [L623] int retValue_acc ; [L624] int tmp ; [L628] FCALL select_helpers() [L629] FCALL select_features() [L630] CALL, EXPR valid_product() [L536] int retValue_acc ; [L539] retValue_acc = 1 [L540] return (retValue_acc); [L630] RET, EXPR valid_product() [L630] tmp = valid_product() [L632] COND TRUE \read(tmp) [L634] FCALL setup() [L635] CALL runTest() [L616] CALL __utac_acc__Specification2_spec__1() [L910] methAndRunningLastTime = 0 [L616] RET __utac_acc__Specification2_spec__1() [L617] CALL test() [L828] int splverifierCounter ; [L829] int tmp ; [L830] int tmp___0 ; [L831] int tmp___1 ; [L832] int tmp___2 ; [L835] splverifierCounter = 0 [L837] COND TRUE 1 [L839] COND TRUE splverifierCounter < 4 [L845] tmp = __VERIFIER_nondet_int() [L847] COND TRUE \read(tmp) [L849] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L849] RET waterRise() [L855] tmp___0 = __VERIFIER_nondet_int() [L857] COND TRUE \read(tmp___0) [L859] CALL changeMethaneLevel() [L77] COND FALSE !(\read(methaneLevelCritical)) [L80] methaneLevelCritical = 1 [L859] RET changeMethaneLevel() [L865] tmp___2 = __VERIFIER_nondet_int() [L867] COND TRUE \read(tmp___2) [L869] CALL startSystem() [L822] systemActive = 1 [L869] RET startSystem() [L884] CALL timeShift() [L659] COND FALSE !(\read(pumpRunning)) [L666] COND TRUE \read(systemActive) [L668] CALL processEnvironment() [L688] int tmp ; [L691] COND TRUE ! pumpRunning [L693] CALL, EXPR isHighWaterLevel() [L785] int retValue_acc ; [L786] int tmp ; [L787] int tmp___0 ; [L791] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L791] RET, EXPR isHighWaterSensorDry() [L791] tmp = isHighWaterSensorDry() [L793] COND FALSE !(\read(tmp)) [L796] tmp___0 = 1 [L798] retValue_acc = tmp___0 [L799] return (retValue_acc); [L693] RET, EXPR isHighWaterLevel() [L693] tmp = isHighWaterLevel() [L695] COND TRUE \read(tmp) [L697] CALL activatePump() [L716] pumpRunning = 1 [L697] RET activatePump() [L668] RET processEnvironment() [L674] CALL __utac_acc__Specification2_spec__2() [L915] int tmp ; [L916] int tmp___0 ; [L920] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L920] RET, EXPR isMethaneLevelCritical() [L920] tmp = isMethaneLevelCritical() [L922] COND TRUE \read(tmp) [L924] CALL, EXPR isPumpRunning() [L740] int retValue_acc ; [L743] retValue_acc = pumpRunning [L744] return (retValue_acc); [L924] RET, EXPR isPumpRunning() [L924] tmp___0 = isPumpRunning() [L926] COND TRUE \read(tmp___0) [L927] COND FALSE !(\read(methAndRunningLastTime)) [L932] methAndRunningLastTime = 1 [L674] RET __utac_acc__Specification2_spec__2() [L884] RET timeShift() [L837] COND TRUE 1 [L839] COND TRUE splverifierCounter < 4 [L845] tmp = __VERIFIER_nondet_int() [L847] COND FALSE !(\read(tmp)) [L855] tmp___0 = __VERIFIER_nondet_int() [L857] COND FALSE !(\read(tmp___0)) [L865] tmp___2 = __VERIFIER_nondet_int() [L867] COND TRUE \read(tmp___2) [L869] CALL startSystem() [L822] systemActive = 1 [L869] RET startSystem() [L884] CALL timeShift() [L659] COND TRUE \read(pumpRunning) [L661] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L661] RET lowerWaterLevel() [L666] COND TRUE \read(systemActive) [L668] CALL processEnvironment() [L688] int tmp ; [L691] COND FALSE !(! pumpRunning) [L706] FCALL processEnvironment__wrappee__base() [L668] RET processEnvironment() [L674] CALL __utac_acc__Specification2_spec__2() [L915] int tmp ; [L916] int tmp___0 ; [L920] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L920] RET, EXPR isMethaneLevelCritical() [L920] tmp = isMethaneLevelCritical() [L922] COND TRUE \read(tmp) [L924] CALL, EXPR isPumpRunning() [L740] int retValue_acc ; [L743] retValue_acc = pumpRunning [L744] return (retValue_acc); [L924] RET, EXPR isPumpRunning() [L924] tmp___0 = isPumpRunning() [L926] COND TRUE \read(tmp___0) [L927] COND TRUE \read(methAndRunningLastTime) [L929] CALL __automaton_fail() [L900] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 625 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 55.7s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 44.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2143 SDtfs, 7578 SDslu, 4906 SDs, 0 SdLazy, 10104 SolverSat, 2574 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 483 GetRequests, 259 SyntacticMatches, 2 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1791 ImplicationChecksByTransitivity, 17.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3376occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.8s AutomataMinimizationTime, 9 MinimizatonAttempts, 4499 StatesRemovedByMinimization, 9 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...