/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 19:47:17,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 19:47:17,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 19:47:17,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 19:47:17,477 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 19:47:17,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 19:47:17,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 19:47:17,495 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 19:47:17,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 19:47:17,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 19:47:17,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 19:47:17,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 19:47:17,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 19:47:17,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 19:47:17,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 19:47:17,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 19:47:17,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 19:47:17,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 19:47:17,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 19:47:17,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 19:47:17,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 19:47:17,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 19:47:17,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 19:47:17,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 19:47:17,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 19:47:17,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 19:47:17,570 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 19:47:17,571 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 19:47:17,571 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 19:47:17,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 19:47:17,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 19:47:17,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 19:47:17,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 19:47:17,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 19:47:17,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 19:47:17,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 19:47:17,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 19:47:17,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 19:47:17,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 19:47:17,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 19:47:17,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 19:47:17,583 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 19:47:17,599 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 19:47:17,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 19:47:17,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 19:47:17,604 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 19:47:17,604 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 19:47:17,604 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 19:47:17,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 19:47:17,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 19:47:17,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 19:47:17,605 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 19:47:17,606 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 19:47:17,607 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 19:47:17,607 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 19:47:17,607 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 19:47:17,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 19:47:17,608 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 19:47:17,608 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 19:47:17,608 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 19:47:17,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:47:17,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 19:47:17,609 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 19:47:17,609 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 19:47:17,609 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 19:47:18,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 19:47:18,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 19:47:18,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 19:47:18,097 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 19:47:18,098 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 19:47:18,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product38.cil.c [2020-10-23 19:47:18,194 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2cb3f7c6/2f3aba08bccf4284b439ecbd04abeeb6/FLAGe6d4ab32b [2020-10-23 19:47:18,867 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 19:47:18,868 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product38.cil.c [2020-10-23 19:47:18,888 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2cb3f7c6/2f3aba08bccf4284b439ecbd04abeeb6/FLAGe6d4ab32b [2020-10-23 19:47:19,115 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2cb3f7c6/2f3aba08bccf4284b439ecbd04abeeb6 [2020-10-23 19:47:19,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 19:47:19,125 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 19:47:19,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 19:47:19,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 19:47:19,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 19:47:19,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:47:19" (1/1) ... [2020-10-23 19:47:19,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56b4ee30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:47:19, skipping insertion in model container [2020-10-23 19:47:19,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:47:19" (1/1) ... [2020-10-23 19:47:19,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 19:47:19,218 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 19:47:19,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:47:19,537 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 19:47:19,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:47:19,774 INFO L208 MainTranslator]: Completed translation [2020-10-23 19:47:19,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:47:19 WrapperNode [2020-10-23 19:47:19,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 19:47:19,776 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 19:47:19,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 19:47:19,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 19:47:19,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:47:19" (1/1) ... [2020-10-23 19:47:19,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:47:19" (1/1) ... [2020-10-23 19:47:19,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:47:19" (1/1) ... [2020-10-23 19:47:19,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:47:19" (1/1) ... [2020-10-23 19:47:19,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:47:19" (1/1) ... [2020-10-23 19:47:19,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:47:19" (1/1) ... [2020-10-23 19:47:19,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:47:19" (1/1) ... [2020-10-23 19:47:19,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 19:47:19,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 19:47:19,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 19:47:19,932 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 19:47:19,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:47:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:47:20,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 19:47:20,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 19:47:20,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 19:47:20,010 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 19:47:20,010 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 19:47:20,010 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 19:47:20,010 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 19:47:20,010 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 19:47:20,010 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 19:47:20,011 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 19:47:20,011 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 19:47:20,011 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 19:47:20,011 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 19:47:20,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-10-23 19:47:20,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 19:47:20,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 19:47:20,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 19:47:20,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 19:47:20,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 19:47:20,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 19:47:20,012 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 19:47:20,013 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 19:47:20,013 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 19:47:20,013 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 19:47:20,013 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 19:47:20,013 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 19:47:20,013 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 19:47:20,014 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 19:47:20,014 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 19:47:20,014 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 19:47:20,014 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-10-23 19:47:20,014 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 19:47:20,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 19:47:20,015 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 19:47:20,015 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 19:47:20,015 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 19:47:20,015 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 19:47:20,015 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 19:47:20,015 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 19:47:20,015 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 19:47:20,016 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 19:47:20,016 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 19:47:20,016 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 19:47:20,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 19:47:20,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 19:47:20,016 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 19:47:20,017 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 19:47:20,017 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 19:47:20,017 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 19:47:20,017 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 19:47:20,017 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 19:47:20,017 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 19:47:20,017 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 19:47:20,018 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 19:47:20,018 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 19:47:20,018 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 19:47:20,018 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 19:47:20,018 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 19:47:20,018 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 19:47:20,018 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 19:47:20,018 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 19:47:20,019 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 19:47:20,019 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 19:47:20,019 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-10-23 19:47:20,019 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 19:47:20,019 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 19:47:20,019 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 19:47:20,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 19:47:20,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 19:47:20,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 19:47:20,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 19:47:20,020 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 19:47:20,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 19:47:20,020 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 19:47:20,020 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 19:47:20,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 19:47:20,021 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 19:47:20,021 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 19:47:20,021 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 19:47:20,021 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 19:47:20,021 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 19:47:20,022 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 19:47:20,022 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 19:47:20,022 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 19:47:20,022 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-10-23 19:47:20,022 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 19:47:20,022 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 19:47:20,023 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 19:47:20,023 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 19:47:20,023 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 19:47:20,023 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 19:47:20,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 19:47:20,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 19:47:20,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 19:47:21,342 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 19:47:21,342 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 19:47:21,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:47:21 BoogieIcfgContainer [2020-10-23 19:47:21,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 19:47:21,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 19:47:21,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 19:47:21,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 19:47:21,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:47:19" (1/3) ... [2020-10-23 19:47:21,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@238b7f4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:47:21, skipping insertion in model container [2020-10-23 19:47:21,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:47:19" (2/3) ... [2020-10-23 19:47:21,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@238b7f4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:47:21, skipping insertion in model container [2020-10-23 19:47:21,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:47:21" (3/3) ... [2020-10-23 19:47:21,357 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product38.cil.c [2020-10-23 19:47:21,372 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 19:47:21,378 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 19:47:21,392 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 19:47:21,426 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 19:47:21,426 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 19:47:21,426 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 19:47:21,427 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 19:47:21,427 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 19:47:21,428 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 19:47:21,428 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 19:47:21,428 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 19:47:21,450 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states. [2020-10-23 19:47:21,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-23 19:47:21,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:47:21,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:47:21,486 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:47:21,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:47:21,493 INFO L82 PathProgramCache]: Analyzing trace with hash -646420694, now seen corresponding path program 1 times [2020-10-23 19:47:21,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:47:21,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526209425] [2020-10-23 19:47:21,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:47:21,576 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:47:21,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:22,381 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:47:22,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:47:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:22,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:47:22,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:22,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:47:22,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:22,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:47:22,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:22,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:47:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:22,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:47:22,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:22,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 19:47:22,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:22,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:47:22,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526209425] [2020-10-23 19:47:22,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:47:22,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 19:47:22,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743095780] [2020-10-23 19:47:22,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 19:47:22,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:47:22,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 19:47:22,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 19:47:22,596 INFO L87 Difference]: Start difference. First operand 314 states. Second operand 3 states. [2020-10-23 19:47:24,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:47:24,294 INFO L93 Difference]: Finished difference Result 486 states and 579 transitions. [2020-10-23 19:47:24,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 19:47:24,297 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-10-23 19:47:24,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:47:24,326 INFO L225 Difference]: With dead ends: 486 [2020-10-23 19:47:24,326 INFO L226 Difference]: Without dead ends: 302 [2020-10-23 19:47:24,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 19:47:24,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-10-23 19:47:24,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 260. [2020-10-23 19:47:24,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-10-23 19:47:24,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 282 transitions. [2020-10-23 19:47:24,528 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 282 transitions. Word has length 148 [2020-10-23 19:47:24,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:47:24,532 INFO L481 AbstractCegarLoop]: Abstraction has 260 states and 282 transitions. [2020-10-23 19:47:24,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 19:47:24,532 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 282 transitions. [2020-10-23 19:47:24,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-23 19:47:24,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:47:24,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:47:24,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 19:47:24,547 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:47:24,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:47:24,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1672440179, now seen corresponding path program 1 times [2020-10-23 19:47:24,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:47:24,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082150765] [2020-10-23 19:47:24,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:47:24,561 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:47:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:25,044 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:47:25,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:47:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:25,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:47:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:25,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:47:25,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:25,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:47:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:25,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:47:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:25,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 19:47:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:25,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 19:47:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:25,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:47:25,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082150765] [2020-10-23 19:47:25,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:47:25,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 19:47:25,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649461055] [2020-10-23 19:47:25,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 19:47:25,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:47:25,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 19:47:25,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:47:25,211 INFO L87 Difference]: Start difference. First operand 260 states and 282 transitions. Second operand 4 states. [2020-10-23 19:47:26,068 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:47:27,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:47:27,306 INFO L93 Difference]: Finished difference Result 396 states and 446 transitions. [2020-10-23 19:47:27,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 19:47:27,313 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-23 19:47:27,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:47:27,322 INFO L225 Difference]: With dead ends: 396 [2020-10-23 19:47:27,322 INFO L226 Difference]: Without dead ends: 285 [2020-10-23 19:47:27,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 19:47:27,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-10-23 19:47:27,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 250. [2020-10-23 19:47:27,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-23 19:47:27,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 269 transitions. [2020-10-23 19:47:27,464 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 269 transitions. Word has length 149 [2020-10-23 19:47:27,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:47:27,466 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 269 transitions. [2020-10-23 19:47:27,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 19:47:27,467 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 269 transitions. [2020-10-23 19:47:27,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-23 19:47:27,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:47:27,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:47:27,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 19:47:27,470 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:47:27,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:47:27,470 INFO L82 PathProgramCache]: Analyzing trace with hash -478958161, now seen corresponding path program 1 times [2020-10-23 19:47:27,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:47:27,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575587105] [2020-10-23 19:47:27,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:47:27,475 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:47:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:28,028 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:47:28,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:47:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:28,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:47:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:28,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:47:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:28,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:47:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:28,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:47:28,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:28,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 19:47:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:28,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 19:47:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:28,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 19:47:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:28,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:47:28,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575587105] [2020-10-23 19:47:28,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:47:28,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:47:28,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443966681] [2020-10-23 19:47:28,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:47:28,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:47:28,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:47:28,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:47:28,231 INFO L87 Difference]: Start difference. First operand 250 states and 269 transitions. Second operand 10 states. [2020-10-23 19:47:28,898 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:47:29,414 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:47:29,831 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:47:30,264 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:30,665 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:47:31,032 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:32,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:47:32,986 INFO L93 Difference]: Finished difference Result 442 states and 508 transitions. [2020-10-23 19:47:32,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 19:47:32,993 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 162 [2020-10-23 19:47:32,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:47:32,998 INFO L225 Difference]: With dead ends: 442 [2020-10-23 19:47:32,998 INFO L226 Difference]: Without dead ends: 307 [2020-10-23 19:47:32,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-23 19:47:33,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-10-23 19:47:33,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 250. [2020-10-23 19:47:33,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-23 19:47:33,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 268 transitions. [2020-10-23 19:47:33,096 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 268 transitions. Word has length 162 [2020-10-23 19:47:33,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:47:33,096 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 268 transitions. [2020-10-23 19:47:33,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:47:33,096 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 268 transitions. [2020-10-23 19:47:33,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-23 19:47:33,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:47:33,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:47:33,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 19:47:33,100 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:47:33,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:47:33,101 INFO L82 PathProgramCache]: Analyzing trace with hash -2085636402, now seen corresponding path program 1 times [2020-10-23 19:47:33,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:47:33,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516691632] [2020-10-23 19:47:33,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:47:33,105 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:47:33,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:33,533 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:47:33,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:47:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:33,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:47:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:33,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:47:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:33,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:47:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:33,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:47:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:33,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 19:47:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:33,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 19:47:33,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:33,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:47:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:33,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:47:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:33,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 19:47:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:33,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-23 19:47:33,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:33,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:47:33,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516691632] [2020-10-23 19:47:33,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:47:33,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 19:47:33,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030988088] [2020-10-23 19:47:33,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 19:47:33,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:47:33,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 19:47:33,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 19:47:33,720 INFO L87 Difference]: Start difference. First operand 250 states and 268 transitions. Second operand 7 states. [2020-10-23 19:47:34,386 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:47:36,347 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:47:37,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:47:37,493 INFO L93 Difference]: Finished difference Result 624 states and 740 transitions. [2020-10-23 19:47:37,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-23 19:47:37,495 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 175 [2020-10-23 19:47:37,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:47:37,500 INFO L225 Difference]: With dead ends: 624 [2020-10-23 19:47:37,500 INFO L226 Difference]: Without dead ends: 489 [2020-10-23 19:47:37,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-23 19:47:37,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2020-10-23 19:47:37,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 360. [2020-10-23 19:47:37,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2020-10-23 19:47:37,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 387 transitions. [2020-10-23 19:47:37,648 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 387 transitions. Word has length 175 [2020-10-23 19:47:37,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:47:37,649 INFO L481 AbstractCegarLoop]: Abstraction has 360 states and 387 transitions. [2020-10-23 19:47:37,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 19:47:37,649 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 387 transitions. [2020-10-23 19:47:37,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-23 19:47:37,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:47:37,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:47:37,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 19:47:37,653 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:47:37,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:47:37,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1678617296, now seen corresponding path program 1 times [2020-10-23 19:47:37,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:47:37,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311980452] [2020-10-23 19:47:37,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:47:37,657 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:47:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:38,077 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:47:38,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:47:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:38,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:47:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:38,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:47:38,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:38,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:47:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:38,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:47:38,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:38,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 19:47:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:38,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 19:47:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:38,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:47:38,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:38,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:47:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:38,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:47:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:38,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:47:38,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:38,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-23 19:47:38,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:38,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-23 19:47:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:38,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:47:38,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311980452] [2020-10-23 19:47:38,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:47:38,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:47:38,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8620225] [2020-10-23 19:47:38,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:47:38,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:47:38,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:47:38,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:47:38,361 INFO L87 Difference]: Start difference. First operand 360 states and 387 transitions. Second operand 10 states. [2020-10-23 19:47:39,045 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:47:40,419 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:40,818 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:47:41,204 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:47:41,575 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:41,993 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:47:42,361 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:44,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:47:44,914 INFO L93 Difference]: Finished difference Result 1002 states and 1226 transitions. [2020-10-23 19:47:44,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-23 19:47:44,915 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 199 [2020-10-23 19:47:44,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:47:44,921 INFO L225 Difference]: With dead ends: 1002 [2020-10-23 19:47:44,921 INFO L226 Difference]: Without dead ends: 757 [2020-10-23 19:47:44,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-10-23 19:47:44,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2020-10-23 19:47:45,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 544. [2020-10-23 19:47:45,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-10-23 19:47:45,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 598 transitions. [2020-10-23 19:47:45,180 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 598 transitions. Word has length 199 [2020-10-23 19:47:45,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:47:45,181 INFO L481 AbstractCegarLoop]: Abstraction has 544 states and 598 transitions. [2020-10-23 19:47:45,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:47:45,181 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 598 transitions. [2020-10-23 19:47:45,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-23 19:47:45,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:47:45,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:47:45,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 19:47:45,185 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:47:45,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:47:45,186 INFO L82 PathProgramCache]: Analyzing trace with hash -976056019, now seen corresponding path program 1 times [2020-10-23 19:47:45,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:47:45,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546891414] [2020-10-23 19:47:45,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:47:45,189 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:47:45,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:45,614 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:47:45,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:47:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:45,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:47:45,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:45,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:47:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:45,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:47:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:45,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:47:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:45,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 19:47:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:45,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 19:47:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:45,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:47:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:45,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:47:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:45,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:47:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:45,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:47:45,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:45,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-23 19:47:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:45,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-23 19:47:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:45,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:47:45,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546891414] [2020-10-23 19:47:45,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:47:45,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:47:45,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948757732] [2020-10-23 19:47:45,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:47:45,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:47:45,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:47:45,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:47:45,845 INFO L87 Difference]: Start difference. First operand 544 states and 598 transitions. Second operand 10 states. [2020-10-23 19:47:46,529 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:47:48,514 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:48,892 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:47:49,270 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:49,624 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:47:49,996 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:47:50,347 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:50,701 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:51,197 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:47:53,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:47:53,334 INFO L93 Difference]: Finished difference Result 1724 states and 2123 transitions. [2020-10-23 19:47:53,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 19:47:53,334 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 199 [2020-10-23 19:47:53,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:47:53,344 INFO L225 Difference]: With dead ends: 1724 [2020-10-23 19:47:53,344 INFO L226 Difference]: Without dead ends: 1295 [2020-10-23 19:47:53,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-23 19:47:53,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2020-10-23 19:47:53,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 911. [2020-10-23 19:47:53,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 911 states. [2020-10-23 19:47:53,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1010 transitions. [2020-10-23 19:47:53,763 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1010 transitions. Word has length 199 [2020-10-23 19:47:53,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:47:53,764 INFO L481 AbstractCegarLoop]: Abstraction has 911 states and 1010 transitions. [2020-10-23 19:47:53,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:47:53,764 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1010 transitions. [2020-10-23 19:47:53,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-23 19:47:53,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:47:53,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:47:53,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 19:47:53,769 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:47:53,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:47:53,770 INFO L82 PathProgramCache]: Analyzing trace with hash 731598753, now seen corresponding path program 1 times [2020-10-23 19:47:53,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:47:53,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693903174] [2020-10-23 19:47:53,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:47:53,775 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:47:53,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:54,195 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:47:54,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:47:54,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:54,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:47:54,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:54,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:47:54,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:54,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:47:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:54,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:47:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:54,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:47:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:54,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 19:47:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:54,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-23 19:47:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:54,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:47:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:54,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:47:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:54,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:47:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:54,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:47:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:54,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-23 19:47:54,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:54,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-23 19:47:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:54,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:47:54,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693903174] [2020-10-23 19:47:54,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:47:54,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 19:47:54,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584928401] [2020-10-23 19:47:54,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 19:47:54,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:47:54,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 19:47:54,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:47:54,433 INFO L87 Difference]: Start difference. First operand 911 states and 1010 transitions. Second operand 11 states. [2020-10-23 19:47:55,111 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:47:57,132 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:57,499 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:47:57,858 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:47:58,306 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:58,737 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:59,160 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:47:59,562 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:59,985 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:02,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:02,404 INFO L93 Difference]: Finished difference Result 1541 states and 1935 transitions. [2020-10-23 19:48:02,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-23 19:48:02,405 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 204 [2020-10-23 19:48:02,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:02,417 INFO L225 Difference]: With dead ends: 1541 [2020-10-23 19:48:02,417 INFO L226 Difference]: Without dead ends: 1537 [2020-10-23 19:48:02,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930 [2020-10-23 19:48:02,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2020-10-23 19:48:02,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 911. [2020-10-23 19:48:02,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 911 states. [2020-10-23 19:48:02,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1008 transitions. [2020-10-23 19:48:02,856 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1008 transitions. Word has length 204 [2020-10-23 19:48:02,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:02,857 INFO L481 AbstractCegarLoop]: Abstraction has 911 states and 1008 transitions. [2020-10-23 19:48:02,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 19:48:02,857 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1008 transitions. [2020-10-23 19:48:02,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-23 19:48:02,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:02,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:48:02,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 19:48:02,863 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:48:02,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:02,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1250147085, now seen corresponding path program 1 times [2020-10-23 19:48:02,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:02,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146061538] [2020-10-23 19:48:02,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:02,867 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:03,228 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:03,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:03,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:03,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:03,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:03,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:03,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:03,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:48:03,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:03,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 19:48:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:03,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-23 19:48:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:03,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:03,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:03,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:03,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:48:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:03,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:48:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:03,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-23 19:48:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:03,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-23 19:48:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:03,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:48:03,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146061538] [2020-10-23 19:48:03,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:03,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 19:48:03,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811626831] [2020-10-23 19:48:03,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 19:48:03,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:03,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 19:48:03,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:48:03,476 INFO L87 Difference]: Start difference. First operand 911 states and 1008 transitions. Second operand 11 states. [2020-10-23 19:48:05,038 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:05,413 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:48:05,822 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:48:06,204 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:06,603 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:48:06,955 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:09,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:09,326 INFO L93 Difference]: Finished difference Result 2355 states and 2891 transitions. [2020-10-23 19:48:09,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 19:48:09,326 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 205 [2020-10-23 19:48:09,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:09,337 INFO L225 Difference]: With dead ends: 2355 [2020-10-23 19:48:09,338 INFO L226 Difference]: Without dead ends: 1559 [2020-10-23 19:48:09,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-10-23 19:48:09,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2020-10-23 19:48:09,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 943. [2020-10-23 19:48:09,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2020-10-23 19:48:09,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1040 transitions. [2020-10-23 19:48:09,713 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1040 transitions. Word has length 205 [2020-10-23 19:48:09,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:09,714 INFO L481 AbstractCegarLoop]: Abstraction has 943 states and 1040 transitions. [2020-10-23 19:48:09,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 19:48:09,714 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1040 transitions. [2020-10-23 19:48:09,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-23 19:48:09,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:09,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:48:09,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 19:48:09,717 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:48:09,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:09,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1375351469, now seen corresponding path program 1 times [2020-10-23 19:48:09,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:09,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288695604] [2020-10-23 19:48:09,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:09,721 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:09,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:10,136 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:10,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:10,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:10,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:10,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:10,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:10,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:10,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:10,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:48:10,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:10,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 19:48:10,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:10,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-23 19:48:10,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:10,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:10,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:10,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:10,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:48:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:10,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:48:10,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:10,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-23 19:48:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:10,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-23 19:48:10,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:10,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:48:10,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288695604] [2020-10-23 19:48:10,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:10,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 19:48:10,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163244907] [2020-10-23 19:48:10,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 19:48:10,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:10,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 19:48:10,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-23 19:48:10,409 INFO L87 Difference]: Start difference. First operand 943 states and 1040 transitions. Second operand 14 states. [2020-10-23 19:48:11,231 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:11,644 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:48:12,044 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:12,421 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:48:12,813 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:13,993 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:14,381 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:48:14,781 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:15,210 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:48:15,599 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:17,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:17,802 INFO L93 Difference]: Finished difference Result 2023 states and 2446 transitions. [2020-10-23 19:48:17,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 19:48:17,803 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 205 [2020-10-23 19:48:17,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:17,811 INFO L225 Difference]: With dead ends: 2023 [2020-10-23 19:48:17,812 INFO L226 Difference]: Without dead ends: 1195 [2020-10-23 19:48:17,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-10-23 19:48:17,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2020-10-23 19:48:18,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 781. [2020-10-23 19:48:18,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 781 states. [2020-10-23 19:48:18,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 840 transitions. [2020-10-23 19:48:18,295 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 840 transitions. Word has length 205 [2020-10-23 19:48:18,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:18,295 INFO L481 AbstractCegarLoop]: Abstraction has 781 states and 840 transitions. [2020-10-23 19:48:18,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 19:48:18,296 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 840 transitions. [2020-10-23 19:48:18,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-23 19:48:18,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:18,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:48:18,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 19:48:18,299 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:48:18,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:18,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1738965623, now seen corresponding path program 1 times [2020-10-23 19:48:18,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:18,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257037802] [2020-10-23 19:48:18,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:18,303 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:48:18,368 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:48:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:48:18,431 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:48:18,691 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 19:48:18,691 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 19:48:18,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 19:48:18,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 07:48:18 BoogieIcfgContainer [2020-10-23 19:48:18,719 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 19:48:18,720 INFO L168 Benchmark]: Toolchain (without parser) took 59600.36 ms. Allocated memory was 160.4 MB in the beginning and 697.3 MB in the end (delta: 536.9 MB). Free memory was 142.8 MB in the beginning and 492.0 MB in the end (delta: -349.2 MB). Peak memory consumption was 188.0 MB. Max. memory is 8.0 GB. [2020-10-23 19:48:18,721 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 160.4 MB. Free memory is still 133.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 19:48:18,722 INFO L168 Benchmark]: CACSL2BoogieTranslator took 648.43 ms. Allocated memory is still 160.4 MB. Free memory was 142.0 MB in the beginning and 135.8 MB in the end (delta: 6.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-10-23 19:48:18,722 INFO L168 Benchmark]: Boogie Preprocessor took 155.24 ms. Allocated memory is still 160.4 MB. Free memory was 135.8 MB in the beginning and 131.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-23 19:48:18,723 INFO L168 Benchmark]: RCFGBuilder took 1413.47 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 131.6 MB in the beginning and 107.8 MB in the end (delta: 23.8 MB). Peak memory consumption was 57.2 MB. Max. memory is 8.0 GB. [2020-10-23 19:48:18,723 INFO L168 Benchmark]: TraceAbstraction took 57370.40 ms. Allocated memory was 192.9 MB in the beginning and 697.3 MB in the end (delta: 504.4 MB). Free memory was 107.8 MB in the beginning and 492.0 MB in the end (delta: -384.3 MB). Peak memory consumption was 120.1 MB. Max. memory is 8.0 GB. [2020-10-23 19:48:18,726 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 160.4 MB. Free memory is still 133.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 648.43 ms. Allocated memory is still 160.4 MB. Free memory was 142.0 MB in the beginning and 135.8 MB in the end (delta: 6.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 155.24 ms. Allocated memory is still 160.4 MB. Free memory was 135.8 MB in the beginning and 131.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1413.47 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 131.6 MB in the beginning and 107.8 MB in the end (delta: 23.8 MB). Peak memory consumption was 57.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 57370.40 ms. Allocated memory was 192.9 MB in the beginning and 697.3 MB in the end (delta: 504.4 MB). Free memory was 107.8 MB in the beginning and 492.0 MB in the end (delta: -384.3 MB). Peak memory consumption was 120.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L379] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L582] int pumpRunning = 0; [L583] int systemActive = 1; [L845] int waterLevel = 1; [L846] int methaneLevelCritical = 0; [L123] int retValue_acc ; [L124] int tmp ; [L128] FCALL select_helpers() [L129] FCALL select_features() [L130] CALL, EXPR valid_product() [L172] int retValue_acc ; [L175] retValue_acc = 1 [L176] return (retValue_acc); [L130] RET, EXPR valid_product() [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L134] FCALL setup() [L135] CALL runTest() [L114] CALL test() [L769] int splverifierCounter ; [L770] int tmp ; [L771] int tmp___0 ; [L772] int tmp___1 ; [L773] int tmp___2 ; [L776] splverifierCounter = 0 [L778] COND TRUE 1 [L780] COND TRUE splverifierCounter < 4 [L786] tmp = __VERIFIER_nondet_int() [L788] COND TRUE \read(tmp) [L790] CALL waterRise() [L863] COND TRUE waterLevel < 2 [L864] waterLevel = waterLevel + 1 [L790] RET waterRise() [L796] tmp___0 = __VERIFIER_nondet_int() [L798] COND TRUE \read(tmp___0) [L800] CALL changeMethaneLevel() [L875] COND FALSE !(\read(methaneLevelCritical)) [L878] methaneLevelCritical = 1 [L800] RET changeMethaneLevel() [L806] tmp___2 = __VERIFIER_nondet_int() [L808] COND TRUE \read(tmp___2) [L810] CALL startSystem() [L763] systemActive = 1 [L810] RET startSystem() [L823] CALL timeShift() [L589] COND FALSE !(\read(pumpRunning)) [L596] COND TRUE \read(systemActive) [L598] CALL processEnvironment() [L644] int tmp ; [L647] COND FALSE !(\read(pumpRunning)) [L662] CALL processEnvironment__wrappee__highWaterSensor() [L618] int tmp ; [L621] COND TRUE ! pumpRunning [L623] CALL, EXPR isHighWaterLevel() [L741] int retValue_acc ; [L742] int tmp ; [L743] int tmp___0 ; [L747] CALL, EXPR isHighWaterSensorDry() [L925] int retValue_acc ; [L928] COND FALSE !(waterLevel < 2) [L932] retValue_acc = 0 [L933] return (retValue_acc); [L747] RET, EXPR isHighWaterSensorDry() [L747] tmp = isHighWaterSensorDry() [L749] COND FALSE !(\read(tmp)) [L752] tmp___0 = 1 [L754] retValue_acc = tmp___0 [L755] return (retValue_acc); [L623] RET, EXPR isHighWaterLevel() [L623] tmp = isHighWaterLevel() [L625] COND TRUE \read(tmp) [L627] CALL activatePump() [L672] pumpRunning = 1 [L627] RET activatePump() [L662] RET processEnvironment__wrappee__highWaterSensor() [L598] RET processEnvironment() [L604] CALL __utac_acc__Specification1_spec__1() [L185] int tmp ; [L186] int tmp___0 ; [L190] CALL, EXPR isMethaneLevelCritical() [L884] int retValue_acc ; [L887] retValue_acc = methaneLevelCritical [L888] return (retValue_acc); [L190] RET, EXPR isMethaneLevelCritical() [L190] tmp = isMethaneLevelCritical() [L192] COND TRUE \read(tmp) [L194] CALL, EXPR isPumpRunning() [L696] int retValue_acc ; [L699] retValue_acc = pumpRunning [L700] return (retValue_acc); [L194] RET, EXPR isPumpRunning() [L194] tmp___0 = isPumpRunning() [L196] COND TRUE \read(tmp___0) [L198] CALL __automaton_fail() [L839] CALL reach_error() [L3] __assert_fail("0", "minepump_spec1_product38.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 635 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 57.2s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 47.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2164 SDtfs, 4814 SDslu, 4852 SDs, 0 SdLazy, 9476 SolverSat, 1453 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 398 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 22.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=943occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 2516 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...