/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_spec1_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:02:25,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:02:25,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:02:25,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:02:25,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:02:25,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:02:25,800 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:02:25,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:02:25,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:02:25,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:02:25,806 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:02:25,807 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:02:25,808 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:02:25,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:02:25,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:02:25,811 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:02:25,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:02:25,813 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:02:25,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:02:25,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:02:25,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:02:25,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:02:25,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:02:25,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:02:25,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:02:25,826 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:02:25,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:02:25,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:02:25,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:02:25,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:02:25,829 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:02:25,830 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:02:25,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:02:25,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:02:25,836 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:02:25,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:02:25,837 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:02:25,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:02:25,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:02:25,839 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:02:25,840 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:02:25,842 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 15:02:25,867 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:02:25,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:02:25,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:02:25,872 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:02:25,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:02:25,872 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:02:25,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:02:25,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:02:25,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:02:25,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:02:25,874 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:02:25,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:02:25,874 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:02:25,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:02:25,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:02:25,875 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:02:25,875 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:02:25,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:02:25,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:02:25,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:02:25,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:02:25,876 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:02:25,876 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:02:26,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:02:26,337 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:02:26,341 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:02:26,342 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:02:26,345 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:02:26,346 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product43.cil.c [2020-09-04 15:02:26,423 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/65770f4ef/c8a1355429ce493698090d97f007c9a3/FLAG40778cc01 [2020-09-04 15:02:27,012 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:02:27,013 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product43.cil.c [2020-09-04 15:02:27,027 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/65770f4ef/c8a1355429ce493698090d97f007c9a3/FLAG40778cc01 [2020-09-04 15:02:27,283 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/65770f4ef/c8a1355429ce493698090d97f007c9a3 [2020-09-04 15:02:27,299 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:02:27,301 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:02:27,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:02:27,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:02:27,311 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:02:27,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:02:27" (1/1) ... [2020-09-04 15:02:27,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11a529ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:27, skipping insertion in model container [2020-09-04 15:02:27,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:02:27" (1/1) ... [2020-09-04 15:02:27,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:02:27,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:02:27,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:02:27,905 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:02:28,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:02:28,110 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:02:28,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:28 WrapperNode [2020-09-04 15:02:28,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:02:28,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:02:28,112 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:02:28,112 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:02:28,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:28" (1/1) ... [2020-09-04 15:02:28,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:28" (1/1) ... [2020-09-04 15:02:28,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:28" (1/1) ... [2020-09-04 15:02:28,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:28" (1/1) ... [2020-09-04 15:02:28,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:28" (1/1) ... [2020-09-04 15:02:28,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:28" (1/1) ... [2020-09-04 15:02:28,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:28" (1/1) ... [2020-09-04 15:02:28,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:02:28,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:02:28,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:02:28,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:02:28,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:28" (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 15:02:28,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:02:28,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:02:28,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:02:28,274 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:02:28,274 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:02:28,275 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:02:28,275 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:02:28,275 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:02:28,275 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:02:28,275 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-04 15:02:28,275 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:02:28,276 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 15:02:28,276 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:02:28,276 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-04 15:02:28,276 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:02:28,276 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:02:28,277 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:02:28,277 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:02:28,277 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:02:28,277 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-04 15:02:28,278 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-04 15:02:28,279 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:02:28,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:02:28,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-04 15:02:28,281 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:02:28,281 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:02:28,282 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:02:28,282 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:02:28,282 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:02:28,282 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:02:28,282 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:02:28,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:02:28,284 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:02:28,284 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:02:28,284 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:02:28,284 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:02:28,285 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:02:28,285 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:02:28,285 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:02:28,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:02:28,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:02:28,285 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:02:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:02:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:02:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:02:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:02:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:02:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:02:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-04 15:02:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:02:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:02:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:02:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:02:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:02:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:02:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-04 15:02:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-04 15:02:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:02:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 15:02:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-04 15:02:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-04 15:02:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:02:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:02:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:02:28,289 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:02:28,289 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:02:28,289 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:02:28,289 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:02:28,289 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:02:28,289 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:02:28,289 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:02:28,289 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:02:28,289 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:02:28,289 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:02:28,290 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:02:28,290 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:02:28,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:02:28,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:02:28,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:02:28,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:02:28,290 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:02:28,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:02:28,291 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:02:28,291 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:02:28,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:02:28,291 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:02:28,292 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:02:28,292 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:02:28,292 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:02:28,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:02:28,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:02:28,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:02:29,393 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:02:29,393 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:02:29,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:02:29 BoogieIcfgContainer [2020-09-04 15:02:29,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:02:29,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:02:29,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:02:29,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:02:29,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:02:27" (1/3) ... [2020-09-04 15:02:29,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25328ef6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:02:29, skipping insertion in model container [2020-09-04 15:02:29,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:28" (2/3) ... [2020-09-04 15:02:29,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25328ef6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:02:29, skipping insertion in model container [2020-09-04 15:02:29,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:02:29" (3/3) ... [2020-09-04 15:02:29,410 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product43.cil.c [2020-09-04 15:02:29,422 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:02:29,433 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:02:29,457 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:02:29,487 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:02:29,488 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:02:29,488 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:02:29,488 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:02:29,488 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:02:29,488 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:02:29,488 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:02:29,489 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:02:29,512 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states. [2020-09-04 15:02:29,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-04 15:02:29,537 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:02:29,539 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] [2020-09-04 15:02:29,539 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:02:29,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:02:29,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1378033390, now seen corresponding path program 1 times [2020-09-04 15:02:29,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:02:29,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43219398] [2020-09-04 15:02:29,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:02:29,651 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:02:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:30,383 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:02:30,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:02:30,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:30,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:02:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:30,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:02:30,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:30,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:02:30,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:30,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:02:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:30,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:02:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:30,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 15:02:30,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:30,563 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 15:02:30,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43219398] [2020-09-04 15:02:30,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:02:30,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 15:02:30,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375280075] [2020-09-04 15:02:30,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 15:02:30,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:02:30,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 15:02:30,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:02:30,595 INFO L87 Difference]: Start difference. First operand 304 states. Second operand 3 states. [2020-09-04 15:02:31,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:02:31,964 INFO L93 Difference]: Finished difference Result 475 states and 564 transitions. [2020-09-04 15:02:31,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 15:02:31,967 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-04 15:02:31,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:02:31,988 INFO L225 Difference]: With dead ends: 475 [2020-09-04 15:02:31,988 INFO L226 Difference]: Without dead ends: 296 [2020-09-04 15:02:31,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:02:32,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-09-04 15:02:32,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 253. [2020-09-04 15:02:32,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-09-04 15:02:32,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 274 transitions. [2020-09-04 15:02:32,132 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 274 transitions. Word has length 142 [2020-09-04 15:02:32,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:02:32,133 INFO L479 AbstractCegarLoop]: Abstraction has 253 states and 274 transitions. [2020-09-04 15:02:32,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 15:02:32,134 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 274 transitions. [2020-09-04 15:02:32,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-04 15:02:32,138 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:02:32,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:02:32,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:02:32,139 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:02:32,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:02:32,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1594368587, now seen corresponding path program 1 times [2020-09-04 15:02:32,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:02:32,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948778189] [2020-09-04 15:02:32,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:02:32,143 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:02:32,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:32,500 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:02:32,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:02:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:32,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:02:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:32,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:02:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:32,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:02:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:32,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:02:32,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:32,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:02:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:32,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:02:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:32,603 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 15:02:32,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948778189] [2020-09-04 15:02:32,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:02:32,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:02:32,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288602579] [2020-09-04 15:02:32,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:02:32,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:02:32,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:02:32,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:02:32,607 INFO L87 Difference]: Start difference. First operand 253 states and 274 transitions. Second operand 4 states. [2020-09-04 15:02:33,251 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:34,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:02:34,212 INFO L93 Difference]: Finished difference Result 383 states and 429 transitions. [2020-09-04 15:02:34,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 15:02:34,213 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-04 15:02:34,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:02:34,218 INFO L225 Difference]: With dead ends: 383 [2020-09-04 15:02:34,218 INFO L226 Difference]: Without dead ends: 279 [2020-09-04 15:02:34,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 15:02:34,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-09-04 15:02:34,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 243. [2020-09-04 15:02:34,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-09-04 15:02:34,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 261 transitions. [2020-09-04 15:02:34,315 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 261 transitions. Word has length 143 [2020-09-04 15:02:34,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:02:34,316 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 261 transitions. [2020-09-04 15:02:34,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:02:34,317 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 261 transitions. [2020-09-04 15:02:34,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-04 15:02:34,319 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:02:34,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:02:34,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:02:34,320 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:02:34,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:02:34,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1389720772, now seen corresponding path program 1 times [2020-09-04 15:02:34,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:02:34,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514422261] [2020-09-04 15:02:34,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:02:34,347 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:02:34,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:34,754 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:02:34,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:02:34,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:34,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:02:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:34,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:02:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:34,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:02:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:34,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:02:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:34,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 15:02:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:34,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-04 15:02:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:34,921 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 15:02:34,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514422261] [2020-09-04 15:02:34,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:02:34,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:02:34,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303669116] [2020-09-04 15:02:34,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:02:34,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:02:34,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:02:34,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:02:34,924 INFO L87 Difference]: Start difference. First operand 243 states and 261 transitions. Second operand 9 states. [2020-09-04 15:02:35,410 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:02:35,815 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:02:36,120 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:02:36,425 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:36,758 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:02:37,043 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:37,998 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:40,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:02:40,094 INFO L93 Difference]: Finished difference Result 640 states and 732 transitions. [2020-09-04 15:02:40,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 15:02:40,101 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 152 [2020-09-04 15:02:40,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:02:40,106 INFO L225 Difference]: With dead ends: 640 [2020-09-04 15:02:40,106 INFO L226 Difference]: Without dead ends: 507 [2020-09-04 15:02:40,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-09-04 15:02:40,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-09-04 15:02:40,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 428. [2020-09-04 15:02:40,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-09-04 15:02:40,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 474 transitions. [2020-09-04 15:02:40,255 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 474 transitions. Word has length 152 [2020-09-04 15:02:40,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:02:40,256 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 474 transitions. [2020-09-04 15:02:40,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:02:40,256 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 474 transitions. [2020-09-04 15:02:40,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-04 15:02:40,259 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:02:40,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:02:40,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:02:40,260 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:02:40,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:02:40,260 INFO L82 PathProgramCache]: Analyzing trace with hash 2146784857, now seen corresponding path program 1 times [2020-09-04 15:02:40,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:02:40,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126458033] [2020-09-04 15:02:40,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:02:40,263 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:02:40,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:40,617 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:02:40,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:02:40,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:40,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:02:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:40,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:02:40,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:40,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:02:40,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:40,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:02:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:40,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-04 15:02:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:40,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:02:40,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:40,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-04 15:02:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:40,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-04 15:02:40,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:40,765 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 15:02:40,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126458033] [2020-09-04 15:02:40,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:02:40,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 15:02:40,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906758652] [2020-09-04 15:02:40,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 15:02:40,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:02:40,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 15:02:40,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-04 15:02:40,771 INFO L87 Difference]: Start difference. First operand 428 states and 474 transitions. Second operand 6 states. [2020-09-04 15:02:41,393 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:02:43,170 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:43,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:02:43,745 INFO L93 Difference]: Finished difference Result 1056 states and 1237 transitions. [2020-09-04 15:02:43,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 15:02:43,746 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2020-09-04 15:02:43,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:02:43,755 INFO L225 Difference]: With dead ends: 1056 [2020-09-04 15:02:43,757 INFO L226 Difference]: Without dead ends: 738 [2020-09-04 15:02:43,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:02:43,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2020-09-04 15:02:43,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 622. [2020-09-04 15:02:43,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2020-09-04 15:02:43,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 688 transitions. [2020-09-04 15:02:43,984 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 688 transitions. Word has length 160 [2020-09-04 15:02:43,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:02:43,985 INFO L479 AbstractCegarLoop]: Abstraction has 622 states and 688 transitions. [2020-09-04 15:02:43,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 15:02:43,985 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 688 transitions. [2020-09-04 15:02:43,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-04 15:02:43,987 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:02:43,987 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] [2020-09-04 15:02:43,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:02:43,988 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:02:43,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:02:43,988 INFO L82 PathProgramCache]: Analyzing trace with hash -2147122244, now seen corresponding path program 1 times [2020-09-04 15:02:43,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:02:43,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882079449] [2020-09-04 15:02:43,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:02:43,991 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:02:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:44,362 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:02:44,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:02:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:44,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:02:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:44,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:02:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:44,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:02:44,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:44,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:02:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:44,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-04 15:02:44,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:44,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-04 15:02:44,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:44,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-04 15:02:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:44,564 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 15:02:44,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882079449] [2020-09-04 15:02:44,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:02:44,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:02:44,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912488189] [2020-09-04 15:02:44,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:02:44,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:02:44,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:02:44,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:02:44,567 INFO L87 Difference]: Start difference. First operand 622 states and 688 transitions. Second operand 9 states. [2020-09-04 15:02:45,104 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:02:46,546 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:46,857 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:02:47,178 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:47,504 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:02:47,810 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:02:48,099 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:48,387 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:48,821 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:50,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:02:50,467 INFO L93 Difference]: Finished difference Result 1691 states and 1962 transitions. [2020-09-04 15:02:50,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 15:02:50,468 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 161 [2020-09-04 15:02:50,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:02:50,479 INFO L225 Difference]: With dead ends: 1691 [2020-09-04 15:02:50,480 INFO L226 Difference]: Without dead ends: 1179 [2020-09-04 15:02:50,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-09-04 15:02:50,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2020-09-04 15:02:50,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1051. [2020-09-04 15:02:50,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1051 states. [2020-09-04 15:02:50,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1170 transitions. [2020-09-04 15:02:50,922 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1170 transitions. Word has length 161 [2020-09-04 15:02:50,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:02:50,923 INFO L479 AbstractCegarLoop]: Abstraction has 1051 states and 1170 transitions. [2020-09-04 15:02:50,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:02:50,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1170 transitions. [2020-09-04 15:02:50,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-04 15:02:50,929 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:02:50,930 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] [2020-09-04 15:02:50,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:02:50,930 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:02:50,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:02:50,931 INFO L82 PathProgramCache]: Analyzing trace with hash 122714309, now seen corresponding path program 1 times [2020-09-04 15:02:50,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:02:50,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543980171] [2020-09-04 15:02:50,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:02:50,933 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:02:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:51,254 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:02:51,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:02:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:51,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:02:51,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:51,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:02:51,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:51,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:02:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:51,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:02:51,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:51,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:02:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:51,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 15:02:51,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:51,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-04 15:02:51,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:51,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-04 15:02:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:51,436 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 15:02:51,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543980171] [2020-09-04 15:02:51,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:02:51,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:02:51,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899493815] [2020-09-04 15:02:51,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:02:51,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:02:51,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:02:51,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:02:51,438 INFO L87 Difference]: Start difference. First operand 1051 states and 1170 transitions. Second operand 10 states. [2020-09-04 15:02:51,918 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:02:53,309 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:53,650 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:02:53,991 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:54,275 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:02:54,526 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:55,301 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:02:55,544 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:55,928 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:56,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:02:56,879 INFO L93 Difference]: Finished difference Result 1311 states and 1533 transitions. [2020-09-04 15:02:56,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-04 15:02:56,880 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 166 [2020-09-04 15:02:56,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:02:56,888 INFO L225 Difference]: With dead ends: 1311 [2020-09-04 15:02:56,888 INFO L226 Difference]: Without dead ends: 1308 [2020-09-04 15:02:56,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-09-04 15:02:56,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2020-09-04 15:02:57,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 1051. [2020-09-04 15:02:57,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1051 states. [2020-09-04 15:02:57,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1167 transitions. [2020-09-04 15:02:57,220 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1167 transitions. Word has length 166 [2020-09-04 15:02:57,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:02:57,221 INFO L479 AbstractCegarLoop]: Abstraction has 1051 states and 1167 transitions. [2020-09-04 15:02:57,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:02:57,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1167 transitions. [2020-09-04 15:02:57,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-04 15:02:57,226 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:02:57,226 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 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 15:02:57,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 15:02:57,227 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:02:57,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:02:57,227 INFO L82 PathProgramCache]: Analyzing trace with hash 17634563, now seen corresponding path program 1 times [2020-09-04 15:02:57,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:02:57,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145317626] [2020-09-04 15:02:57,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:02:57,231 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:02:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:57,562 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:02:57,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:02:57,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:57,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:02:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:57,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:02:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:57,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:02:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:57,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:02:57,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:57,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:02:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:57,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 15:02:57,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:57,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:02:57,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:57,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:02:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:57,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:02:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:57,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:02:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:57,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:02:57,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:57,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 15:02:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:57,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-09-04 15:02:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:57,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-09-04 15:02:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:57,765 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 15:02:57,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145317626] [2020-09-04 15:02:57,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:02:57,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:02:57,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147096547] [2020-09-04 15:02:57,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:02:57,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:02:57,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:02:57,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:02:57,770 INFO L87 Difference]: Start difference. First operand 1051 states and 1167 transitions. Second operand 10 states. [2020-09-04 15:02:59,443 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:59,779 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:03:00,130 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 15:03:00,479 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:00,833 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:01,158 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:02,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:02,698 INFO L93 Difference]: Finished difference Result 2401 states and 2856 transitions. [2020-09-04 15:03:02,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 15:03:02,698 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 212 [2020-09-04 15:03:02,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:02,709 INFO L225 Difference]: With dead ends: 2401 [2020-09-04 15:03:02,710 INFO L226 Difference]: Without dead ends: 1460 [2020-09-04 15:03:02,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-09-04 15:03:02,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2020-09-04 15:03:03,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1083. [2020-09-04 15:03:03,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1083 states. [2020-09-04 15:03:03,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 1199 transitions. [2020-09-04 15:03:03,202 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 1199 transitions. Word has length 212 [2020-09-04 15:03:03,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:03,203 INFO L479 AbstractCegarLoop]: Abstraction has 1083 states and 1199 transitions. [2020-09-04 15:03:03,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:03:03,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 1199 transitions. [2020-09-04 15:03:03,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-04 15:03:03,208 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:03,208 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 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 15:03:03,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 15:03:03,209 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:03,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:03,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1737035613, now seen corresponding path program 1 times [2020-09-04 15:03:03,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:03,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718510049] [2020-09-04 15:03:03,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:03,212 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:03,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:03,577 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:03,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:03,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:03,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:03,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:03,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:03,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:03,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:03:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:03,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 15:03:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:03,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:03,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:03:03,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:03,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:03:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:03,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:03:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:03,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:03:03,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:03,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 15:03:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:03,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-09-04 15:03:03,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:03,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-09-04 15:03:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:03,915 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 15:03:03,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718510049] [2020-09-04 15:03:03,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:03,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-04 15:03:03,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566761649] [2020-09-04 15:03:03,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 15:03:03,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:03,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 15:03:03,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-04 15:03:03,918 INFO L87 Difference]: Start difference. First operand 1083 states and 1199 transitions. Second operand 13 states. [2020-09-04 15:03:04,754 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:05,081 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:03:05,401 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:05,715 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:06,009 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:06,979 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:07,308 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:07,649 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:07,995 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:08,316 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:10,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:10,072 INFO L93 Difference]: Finished difference Result 2469 states and 2928 transitions. [2020-09-04 15:03:10,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-04 15:03:10,072 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 212 [2020-09-04 15:03:10,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:10,081 INFO L225 Difference]: With dead ends: 2469 [2020-09-04 15:03:10,081 INFO L226 Difference]: Without dead ends: 1496 [2020-09-04 15:03:10,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-09-04 15:03:10,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2020-09-04 15:03:10,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1107. [2020-09-04 15:03:10,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1107 states. [2020-09-04 15:03:10,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1223 transitions. [2020-09-04 15:03:10,626 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1223 transitions. Word has length 212 [2020-09-04 15:03:10,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:10,626 INFO L479 AbstractCegarLoop]: Abstraction has 1107 states and 1223 transitions. [2020-09-04 15:03:10,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 15:03:10,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1223 transitions. [2020-09-04 15:03:10,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-04 15:03:10,640 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:10,640 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 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 15:03:10,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 15:03:10,641 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:10,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:10,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1064314170, now seen corresponding path program 1 times [2020-09-04 15:03:10,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:10,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912453801] [2020-09-04 15:03:10,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:10,645 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,051 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:11,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:11,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:11,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:11,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:11,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:03:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 15:03:11,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:03:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:03:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:03:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:03:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 15:03:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-09-04 15:03:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-09-04 15:03:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,275 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 15:03:11,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912453801] [2020-09-04 15:03:11,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:11,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 15:03:11,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702820871] [2020-09-04 15:03:11,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 15:03:11,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:11,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 15:03:11,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-04 15:03:11,278 INFO L87 Difference]: Start difference. First operand 1107 states and 1223 transitions. Second operand 7 states. [2020-09-04 15:03:11,854 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:12,485 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:15,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:15,630 INFO L93 Difference]: Finished difference Result 3626 states and 4383 transitions. [2020-09-04 15:03:15,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 15:03:15,635 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2020-09-04 15:03:15,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:15,650 INFO L225 Difference]: With dead ends: 3626 [2020-09-04 15:03:15,650 INFO L226 Difference]: Without dead ends: 2629 [2020-09-04 15:03:15,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-09-04 15:03:15,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2629 states. [2020-09-04 15:03:16,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2629 to 2151. [2020-09-04 15:03:16,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2151 states. [2020-09-04 15:03:16,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2151 states to 2151 states and 2439 transitions. [2020-09-04 15:03:16,819 INFO L78 Accepts]: Start accepts. Automaton has 2151 states and 2439 transitions. Word has length 212 [2020-09-04 15:03:16,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:16,819 INFO L479 AbstractCegarLoop]: Abstraction has 2151 states and 2439 transitions. [2020-09-04 15:03:16,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 15:03:16,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2151 states and 2439 transitions. [2020-09-04 15:03:16,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-04 15:03:16,827 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:16,828 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 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 15:03:16,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 15:03:16,828 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:16,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:16,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1071999651, now seen corresponding path program 1 times [2020-09-04 15:03:16,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:16,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639100930] [2020-09-04 15:03:16,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:16,839 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:17,199 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:17,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:17,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:17,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:17,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:17,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:17,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:17,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:17,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-04 15:03:17,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:17,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 15:03:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:17,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-04 15:03:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:17,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:17,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:03:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:17,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:03:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:17,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:03:17,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:17,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:03:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:17,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 15:03:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:17,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-09-04 15:03:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:17,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 15:03:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:17,682 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 15:03:17,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639100930] [2020-09-04 15:03:17,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:17,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-09-04 15:03:17,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674987502] [2020-09-04 15:03:17,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-04 15:03:17,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:17,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-04 15:03:17,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2020-09-04 15:03:17,686 INFO L87 Difference]: Start difference. First operand 2151 states and 2439 transitions. Second operand 20 states. [2020-09-04 15:03:18,243 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:18,782 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:03:19,101 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:03:19,438 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:19,756 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:03:20,066 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:21,084 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:22,034 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:22,439 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:03:22,957 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:23,337 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:03:25,033 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:25,443 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:03:25,817 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:26,176 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:03:26,532 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:26,920 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:03:27,287 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:27,668 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:03:28,343 WARN L193 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-09-04 15:03:29,131 WARN L193 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 190 [2020-09-04 15:03:29,737 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-09-04 15:03:31,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:31,548 INFO L93 Difference]: Finished difference Result 4577 states and 5360 transitions. [2020-09-04 15:03:31,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-09-04 15:03:31,549 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 217 [2020-09-04 15:03:31,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:31,566 INFO L225 Difference]: With dead ends: 4577 [2020-09-04 15:03:31,566 INFO L226 Difference]: Without dead ends: 2536 [2020-09-04 15:03:31,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=563, Invalid=2407, Unknown=0, NotChecked=0, Total=2970 [2020-09-04 15:03:31,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2536 states. [2020-09-04 15:03:32,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2536 to 2065. [2020-09-04 15:03:32,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2065 states. [2020-09-04 15:03:32,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2065 states to 2065 states and 2307 transitions. [2020-09-04 15:03:32,512 INFO L78 Accepts]: Start accepts. Automaton has 2065 states and 2307 transitions. Word has length 217 [2020-09-04 15:03:32,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:32,513 INFO L479 AbstractCegarLoop]: Abstraction has 2065 states and 2307 transitions. [2020-09-04 15:03:32,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-04 15:03:32,513 INFO L276 IsEmpty]: Start isEmpty. Operand 2065 states and 2307 transitions. [2020-09-04 15:03:32,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-09-04 15:03:32,520 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:32,521 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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 15:03:32,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 15:03:32,521 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:32,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:32,522 INFO L82 PathProgramCache]: Analyzing trace with hash -768855845, now seen corresponding path program 1 times [2020-09-04 15:03:32,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:32,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221848935] [2020-09-04 15:03:32,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:32,564 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:03:32,642 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:03:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:03:32,726 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:03:33,097 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:03:33,097 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:03:33,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 15:03:33,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:03:33 BoogieIcfgContainer [2020-09-04 15:03:33,131 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:03:33,133 INFO L168 Benchmark]: Toolchain (without parser) took 65832.46 ms. Allocated memory was 138.9 MB in the beginning and 1.3 GB in the end (delta: 1.2 GB). Free memory was 101.7 MB in the beginning and 696.1 MB in the end (delta: -594.4 MB). Peak memory consumption was 571.6 MB. Max. memory is 7.1 GB. [2020-09-04 15:03:33,134 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 15:03:33,135 INFO L168 Benchmark]: CACSL2BoogieTranslator took 805.15 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 101.5 MB in the beginning and 172.1 MB in the end (delta: -70.5 MB). Peak memory consumption was 30.7 MB. Max. memory is 7.1 GB. [2020-09-04 15:03:33,135 INFO L168 Benchmark]: Boogie Preprocessor took 93.09 ms. Allocated memory is still 202.4 MB. Free memory was 172.1 MB in the beginning and 168.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-09-04 15:03:33,136 INFO L168 Benchmark]: RCFGBuilder took 1195.67 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 168.0 MB in the beginning and 179.0 MB in the end (delta: -11.0 MB). Peak memory consumption was 85.1 MB. Max. memory is 7.1 GB. [2020-09-04 15:03:33,137 INFO L168 Benchmark]: TraceAbstraction took 63729.26 ms. Allocated memory was 235.9 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 179.0 MB in the beginning and 696.1 MB in the end (delta: -517.2 MB). Peak memory consumption was 551.9 MB. Max. memory is 7.1 GB. [2020-09-04 15:03:33,140 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 805.15 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 101.5 MB in the beginning and 172.1 MB in the end (delta: -70.5 MB). Peak memory consumption was 30.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 93.09 ms. Allocated memory is still 202.4 MB. Free memory was 172.1 MB in the beginning and 168.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1195.67 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 168.0 MB in the beginning and 179.0 MB in the end (delta: -11.0 MB). Peak memory consumption was 85.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 63729.26 ms. Allocated memory was 235.9 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 179.0 MB in the beginning and 696.1 MB in the end (delta: -517.2 MB). Peak memory consumption was 551.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 405]: 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; [L147] int pumpRunning = 0; [L148] int systemActive = 1; [L436] int cleanupTimeShifts = 4; [L704] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L512] int retValue_acc ; [L513] int tmp ; [L517] FCALL select_helpers() [L518] FCALL select_features() [L519] CALL, EXPR valid_product() [L927] int retValue_acc ; [L930] retValue_acc = 1 [L931] return (retValue_acc); [L519] RET, EXPR valid_product() [L519] tmp = valid_product() [L521] COND TRUE \read(tmp) [L523] FCALL setup() [L524] CALL runTest() [L503] CALL test() [L335] int splverifierCounter ; [L336] int tmp ; [L337] int tmp___0 ; [L338] int tmp___1 ; [L339] int tmp___2 ; [L342] splverifierCounter = 0 [L344] COND TRUE 1 [L346] COND TRUE splverifierCounter < 4 [L352] tmp = __VERIFIER_nondet_int() [L354] COND TRUE \read(tmp) [L356] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L356] RET waterRise() [L362] tmp___0 = __VERIFIER_nondet_int() [L364] COND FALSE !(\read(tmp___0)) [L372] tmp___2 = __VERIFIER_nondet_int() [L374] COND TRUE \read(tmp___2) [L389] CALL timeShift() [L155] COND FALSE !(\read(pumpRunning)) [L162] COND TRUE \read(systemActive) [L164] CALL processEnvironment() [L184] int tmp ; [L187] COND TRUE ! pumpRunning [L189] CALL, EXPR isHighWaterLevel() [L299] int retValue_acc ; [L300] int tmp ; [L301] int tmp___0 ; [L305] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L305] RET, EXPR isHighWaterSensorDry() [L305] tmp = isHighWaterSensorDry() [L307] COND FALSE !(\read(tmp)) [L310] tmp___0 = 1 [L312] retValue_acc = tmp___0 [L313] return (retValue_acc); [L189] RET, EXPR isHighWaterLevel() [L189] tmp = isHighWaterLevel() [L191] COND TRUE \read(tmp) [L193] CALL activatePump() [L218] int tmp ; [L222] CALL, EXPR isMethaneAlarm() [L243] int retValue_acc ; [L247] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L247] RET, EXPR isMethaneLevelCritical() [L247] retValue_acc = isMethaneLevelCritical() [L249] return (retValue_acc); [L222] RET, EXPR isMethaneAlarm() [L222] tmp = isMethaneAlarm() [L224] COND FALSE !(\read(tmp)) [L228] CALL activatePump__wrappee__highWaterSensor() [L212] pumpRunning = 1 [L228] RET activatePump__wrappee__highWaterSensor() [L193] RET activatePump() [L164] RET processEnvironment() [L170] CALL __utac_acc__Specification1_spec__1() [L411] int tmp ; [L412] int tmp___0 ; [L416] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L416] RET, EXPR isMethaneLevelCritical() [L416] tmp = isMethaneLevelCritical() [L418] COND FALSE !(\read(tmp)) [L170] RET __utac_acc__Specification1_spec__1() [L389] RET timeShift() [L344] COND TRUE 1 [L346] COND TRUE splverifierCounter < 4 [L352] tmp = __VERIFIER_nondet_int() [L354] COND FALSE !(\read(tmp)) [L362] tmp___0 = __VERIFIER_nondet_int() [L364] COND TRUE \read(tmp___0) [L366] CALL changeMethaneLevel() [L77] COND FALSE !(\read(methaneLevelCritical)) [L80] methaneLevelCritical = 1 [L366] RET changeMethaneLevel() [L372] tmp___2 = __VERIFIER_nondet_int() [L374] COND TRUE \read(tmp___2) [L389] CALL timeShift() [L155] COND TRUE \read(pumpRunning) [L157] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L157] RET lowerWaterLevel() [L162] COND TRUE \read(systemActive) [L164] CALL processEnvironment() [L184] int tmp ; [L187] COND FALSE !(! pumpRunning) [L202] FCALL processEnvironment__wrappee__base() [L164] RET processEnvironment() [L170] CALL __utac_acc__Specification1_spec__1() [L411] int tmp ; [L412] int tmp___0 ; [L416] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L416] RET, EXPR isMethaneLevelCritical() [L416] tmp = isMethaneLevelCritical() [L418] COND TRUE \read(tmp) [L420] CALL, EXPR isPumpRunning() [L254] int retValue_acc ; [L257] retValue_acc = pumpRunning [L258] return (retValue_acc); [L420] RET, EXPR isPumpRunning() [L420] tmp___0 = isPumpRunning() [L422] COND TRUE \read(tmp___0) [L424] CALL __automaton_fail() [L405] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 621 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 63.6s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 51.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2472 SDtfs, 5850 SDslu, 5505 SDs, 0 SdLazy, 11838 SolverSat, 1939 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 21.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 437 GetRequests, 265 SyntacticMatches, 4 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 24.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2151occurred 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: 4.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 2374 StatesRemovedByMinimization, 10 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...