/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_spec5_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:19:40,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:19:40,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:19:40,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:19:40,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:19:40,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:19:40,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:19:40,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:19:40,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:19:40,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:19:40,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:19:40,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:19:40,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:19:40,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:19:40,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:19:40,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:19:40,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:19:40,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:19:41,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:19:41,009 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:19:41,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:19:41,012 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:19:41,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:19:41,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:19:41,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:19:41,019 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:19:41,019 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:19:41,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:19:41,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:19:41,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:19:41,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:19:41,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:19:41,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:19:41,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:19:41,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:19:41,027 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:19:41,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:19:41,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:19:41,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:19:41,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:19:41,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:19:41,033 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 20:19:41,045 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:19:41,046 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:19:41,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:19:41,048 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:19:41,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:19:41,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:19:41,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:19:41,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:19:41,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:19:41,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:19:41,049 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:19:41,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:19:41,050 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:19:41,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:19:41,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:19:41,051 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:19:41,051 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:19:41,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:19:41,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:19:41,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:19:41,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:19:41,053 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:19:41,053 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:19:41,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:19:41,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:19:41,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:19:41,512 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:19:41,513 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:19:41,514 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product37.cil.c [2020-10-23 20:19:41,611 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b48864e99/dd32defecde049a98851640241aa9f68/FLAGa7b5e32a2 [2020-10-23 20:19:42,308 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:19:42,309 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product37.cil.c [2020-10-23 20:19:42,323 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b48864e99/dd32defecde049a98851640241aa9f68/FLAGa7b5e32a2 [2020-10-23 20:19:42,590 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b48864e99/dd32defecde049a98851640241aa9f68 [2020-10-23 20:19:42,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:19:42,600 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:19:42,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:19:42,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:19:42,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:19:42,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:19:42" (1/1) ... [2020-10-23 20:19:42,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3126e20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:42, skipping insertion in model container [2020-10-23 20:19:42,611 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:19:42" (1/1) ... [2020-10-23 20:19:42,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:19:42,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:19:43,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:19:43,019 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:19:43,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:19:43,175 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:19:43,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:43 WrapperNode [2020-10-23 20:19:43,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:19:43,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:19:43,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:19:43,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:19:43,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:43" (1/1) ... [2020-10-23 20:19:43,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:43" (1/1) ... [2020-10-23 20:19:43,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:43" (1/1) ... [2020-10-23 20:19:43,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:43" (1/1) ... [2020-10-23 20:19:43,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:43" (1/1) ... [2020-10-23 20:19:43,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:43" (1/1) ... [2020-10-23 20:19:43,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:43" (1/1) ... [2020-10-23 20:19:43,318 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:19:43,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:19:43,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:19:43,319 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:19:43,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:43" (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 20:19:43,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:19:43,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:19:43,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 20:19:43,415 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:19:43,415 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 20:19:43,416 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 20:19:43,416 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 20:19:43,416 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 20:19:43,416 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 20:19:43,416 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 20:19:43,417 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 20:19:43,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:19:43,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:19:43,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:19:43,417 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 20:19:43,417 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 20:19:43,418 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 20:19:43,418 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 20:19:43,418 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:19:43,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 20:19:43,418 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 20:19:43,419 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 20:19:43,419 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 20:19:43,419 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 20:19:43,419 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 20:19:43,419 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 20:19:43,420 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 20:19:43,420 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 20:19:43,420 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 20:19:43,420 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 20:19:43,420 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 20:19:43,420 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 20:19:43,421 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 20:19:43,421 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 20:19:43,421 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 20:19:43,421 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 20:19:43,421 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 20:19:43,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 20:19:43,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 20:19:43,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 20:19:43,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 20:19:43,422 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:19:43,423 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:19:43,423 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:19:43,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:19:43,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:19:43,423 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 20:19:43,423 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 20:19:43,424 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 20:19:43,424 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 20:19:43,424 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 20:19:43,424 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 20:19:43,424 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 20:19:43,424 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 20:19:43,425 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 20:19:43,425 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 20:19:43,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:19:43,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:19:43,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:19:43,425 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 20:19:43,426 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 20:19:43,426 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 20:19:43,426 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 20:19:43,426 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 20:19:43,426 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 20:19:43,427 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 20:19:43,427 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 20:19:43,427 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 20:19:43,427 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 20:19:43,427 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:19:43,427 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 20:19:43,428 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 20:19:43,428 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 20:19:43,428 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 20:19:43,428 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 20:19:43,428 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 20:19:43,428 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 20:19:43,429 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 20:19:43,429 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:19:43,429 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:19:43,429 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 20:19:43,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:19:43,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:19:43,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:19:43,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:19:43,430 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 20:19:43,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:19:43,430 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 20:19:43,431 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 20:19:43,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:19:43,431 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 20:19:43,431 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 20:19:43,431 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 20:19:43,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:19:43,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:19:43,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:19:44,892 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:19:44,892 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 20:19:44,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:19:44 BoogieIcfgContainer [2020-10-23 20:19:44,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:19:44,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:19:44,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:19:44,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:19:44,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:19:42" (1/3) ... [2020-10-23 20:19:44,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358ba22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:19:44, skipping insertion in model container [2020-10-23 20:19:44,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:43" (2/3) ... [2020-10-23 20:19:44,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358ba22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:19:44, skipping insertion in model container [2020-10-23 20:19:44,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:19:44" (3/3) ... [2020-10-23 20:19:44,904 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product37.cil.c [2020-10-23 20:19:44,916 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:19:44,923 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 20:19:44,937 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 20:19:44,958 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:19:44,959 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:19:44,959 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:19:44,959 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:19:44,959 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:19:44,959 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:19:44,959 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:19:44,960 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:19:44,984 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states. [2020-10-23 20:19:45,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-23 20:19:45,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:19:45,012 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:19:45,012 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 20:19:45,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:19:45,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1838554546, now seen corresponding path program 1 times [2020-10-23 20:19:45,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:19:45,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038682926] [2020-10-23 20:19:45,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:19:45,121 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:19:45,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:45,987 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:19:45,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:46,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:46,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:19:46,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:46,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:19:46,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:46,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:19:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:46,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:19:46,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:46,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:19:46,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:46,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 20:19:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:46,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:46,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 20:19:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:46,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 20:19:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:46,267 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:19:46,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038682926] [2020-10-23 20:19:46,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:19:46,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:19:46,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160437931] [2020-10-23 20:19:46,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:19:46,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:19:46,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:19:46,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:19:46,308 INFO L87 Difference]: Start difference. First operand 328 states. Second operand 4 states. [2020-10-23 20:19:48,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:19:48,120 INFO L93 Difference]: Finished difference Result 505 states and 590 transitions. [2020-10-23 20:19:48,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:19:48,122 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-10-23 20:19:48,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:19:48,141 INFO L225 Difference]: With dead ends: 505 [2020-10-23 20:19:48,141 INFO L226 Difference]: Without dead ends: 318 [2020-10-23 20:19:48,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:19:48,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-23 20:19:48,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 274. [2020-10-23 20:19:48,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-23 20:19:48,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 297 transitions. [2020-10-23 20:19:48,355 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 297 transitions. Word has length 166 [2020-10-23 20:19:48,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:19:48,356 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 297 transitions. [2020-10-23 20:19:48,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:19:48,356 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 297 transitions. [2020-10-23 20:19:48,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-23 20:19:48,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:19:48,362 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:19:48,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:19:48,363 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 20:19:48,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:19:48,364 INFO L82 PathProgramCache]: Analyzing trace with hash 61293119, now seen corresponding path program 1 times [2020-10-23 20:19:48,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:19:48,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472685545] [2020-10-23 20:19:48,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:19:48,370 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:19:48,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:48,845 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:19:48,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:48,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:19:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:48,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:19:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:48,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:19:48,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:48,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:19:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:48,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:19:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:48,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:19:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:48,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:48,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-23 20:19:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:48,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:19:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:48,995 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:19:48,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472685545] [2020-10-23 20:19:48,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:19:48,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 20:19:48,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887607940] [2020-10-23 20:19:48,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 20:19:48,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:19:48,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 20:19:48,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:19:48,999 INFO L87 Difference]: Start difference. First operand 274 states and 297 transitions. Second operand 5 states. [2020-10-23 20:19:49,900 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:19:51,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:19:51,198 INFO L93 Difference]: Finished difference Result 431 states and 482 transitions. [2020-10-23 20:19:51,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 20:19:51,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-23 20:19:51,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:19:51,204 INFO L225 Difference]: With dead ends: 431 [2020-10-23 20:19:51,204 INFO L226 Difference]: Without dead ends: 307 [2020-10-23 20:19:51,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:19:51,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-10-23 20:19:51,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 264. [2020-10-23 20:19:51,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-23 20:19:51,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 284 transitions. [2020-10-23 20:19:51,351 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 284 transitions. Word has length 167 [2020-10-23 20:19:51,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:19:51,352 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 284 transitions. [2020-10-23 20:19:51,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 20:19:51,352 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 284 transitions. [2020-10-23 20:19:51,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-23 20:19:51,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:19:51,356 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:19:51,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:19:51,357 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 20:19:51,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:19:51,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1345086176, now seen corresponding path program 1 times [2020-10-23 20:19:51,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:19:51,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294251798] [2020-10-23 20:19:51,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:19:51,364 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:19:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:51,842 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:19:51,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:51,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:51,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:19:51,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:51,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:19:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:51,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:19:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:51,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:19:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:52,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:19:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:52,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:19:52,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:52,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:52,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 20:19:52,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:52,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-23 20:19:52,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:52,123 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:19:52,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294251798] [2020-10-23 20:19:52,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:19:52,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:19:52,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605114691] [2020-10-23 20:19:52,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:19:52,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:19:52,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:19:52,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:19:52,134 INFO L87 Difference]: Start difference. First operand 264 states and 284 transitions. Second operand 10 states. [2020-10-23 20:19:52,844 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:19:53,368 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:19:53,777 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:19:54,191 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:19:54,602 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:19:55,048 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:19:56,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:19:56,959 INFO L93 Difference]: Finished difference Result 451 states and 508 transitions. [2020-10-23 20:19:56,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 20:19:56,960 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 176 [2020-10-23 20:19:56,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:19:56,967 INFO L225 Difference]: With dead ends: 451 [2020-10-23 20:19:56,967 INFO L226 Difference]: Without dead ends: 307 [2020-10-23 20:19:56,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-23 20:19:56,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-10-23 20:19:57,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 264. [2020-10-23 20:19:57,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-23 20:19:57,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 283 transitions. [2020-10-23 20:19:57,121 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 283 transitions. Word has length 176 [2020-10-23 20:19:57,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:19:57,124 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 283 transitions. [2020-10-23 20:19:57,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:19:57,125 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 283 transitions. [2020-10-23 20:19:57,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-23 20:19:57,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:19:57,129 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:19:57,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:19:57,130 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 20:19:57,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:19:57,132 INFO L82 PathProgramCache]: Analyzing trace with hash 161612507, now seen corresponding path program 1 times [2020-10-23 20:19:57,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:19:57,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254900544] [2020-10-23 20:19:57,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:19:57,139 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:19:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:57,671 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:19:57,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:57,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:19:57,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:57,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:19:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:57,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:19:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:57,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:19:57,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:57,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:19:57,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:57,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:19:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:57,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:57,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:19:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:57,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:19:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:57,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:19:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:57,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-23 20:19:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:57,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-23 20:19:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:57,844 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:19:57,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254900544] [2020-10-23 20:19:57,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:19:57,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 20:19:57,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537919047] [2020-10-23 20:19:57,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 20:19:57,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:19:57,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 20:19:57,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:19:57,846 INFO L87 Difference]: Start difference. First operand 264 states and 283 transitions. Second operand 7 states. [2020-10-23 20:19:58,532 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:00,716 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:01,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:01,338 INFO L93 Difference]: Finished difference Result 593 states and 679 transitions. [2020-10-23 20:20:01,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 20:20:01,339 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2020-10-23 20:20:01,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:01,344 INFO L225 Difference]: With dead ends: 593 [2020-10-23 20:20:01,345 INFO L226 Difference]: Without dead ends: 449 [2020-10-23 20:20:01,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-10-23 20:20:01,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2020-10-23 20:20:01,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 379. [2020-10-23 20:20:01,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-10-23 20:20:01,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 410 transitions. [2020-10-23 20:20:01,530 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 410 transitions. Word has length 189 [2020-10-23 20:20:01,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:01,531 INFO L481 AbstractCegarLoop]: Abstraction has 379 states and 410 transitions. [2020-10-23 20:20:01,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 20:20:01,531 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 410 transitions. [2020-10-23 20:20:01,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-23 20:20:01,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:01,535 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:01,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:20:01,535 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 20:20:01,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:01,536 INFO L82 PathProgramCache]: Analyzing trace with hash 737245382, now seen corresponding path program 1 times [2020-10-23 20:20:01,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:01,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442522529] [2020-10-23 20:20:01,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:01,540 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:01,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:01,940 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:01,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:01,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:01,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:01,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:01,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:01,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:01,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:02,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:02,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:02,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:20:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:02,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:02,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:20:02,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:02,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:02,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:02,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:02,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:20:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:02,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:20:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:02,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-23 20:20:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:02,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-23 20:20:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:02,183 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:20:02,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442522529] [2020-10-23 20:20:02,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:02,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:20:02,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615492054] [2020-10-23 20:20:02,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:20:02,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:02,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:20:02,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:20:02,186 INFO L87 Difference]: Start difference. First operand 379 states and 410 transitions. Second operand 10 states. [2020-10-23 20:20:02,920 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:04,414 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:04,848 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:20:05,256 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:05,649 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:06,098 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:20:06,513 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:08,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:08,446 INFO L93 Difference]: Finished difference Result 926 states and 1091 transitions. [2020-10-23 20:20:08,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-23 20:20:08,453 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 213 [2020-10-23 20:20:08,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:08,462 INFO L225 Difference]: With dead ends: 926 [2020-10-23 20:20:08,463 INFO L226 Difference]: Without dead ends: 667 [2020-10-23 20:20:08,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-10-23 20:20:08,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2020-10-23 20:20:08,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 566. [2020-10-23 20:20:08,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2020-10-23 20:20:08,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 625 transitions. [2020-10-23 20:20:08,706 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 625 transitions. Word has length 213 [2020-10-23 20:20:08,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:08,707 INFO L481 AbstractCegarLoop]: Abstraction has 566 states and 625 transitions. [2020-10-23 20:20:08,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:20:08,707 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 625 transitions. [2020-10-23 20:20:08,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-23 20:20:08,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:08,711 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:08,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:20:08,711 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 20:20:08,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:08,712 INFO L82 PathProgramCache]: Analyzing trace with hash 46751241, now seen corresponding path program 1 times [2020-10-23 20:20:08,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:08,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570494567] [2020-10-23 20:20:08,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:08,716 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:09,125 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:09,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:09,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:09,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:09,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:09,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:09,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:09,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:09,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:20:09,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:09,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:09,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:09,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:20:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:09,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:09,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:09,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:09,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:20:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:09,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:20:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:09,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-23 20:20:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:09,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-23 20:20:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:09,365 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-23 20:20:09,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570494567] [2020-10-23 20:20:09,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:09,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:20:09,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169294386] [2020-10-23 20:20:09,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:20:09,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:09,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:20:09,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:20:09,367 INFO L87 Difference]: Start difference. First operand 566 states and 625 transitions. Second operand 10 states. [2020-10-23 20:20:10,044 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:11,043 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:11,430 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:12,542 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:12,945 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:13,391 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:14,120 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:14,525 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:14,885 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:15,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:15,739 INFO L93 Difference]: Finished difference Result 1106 states and 1272 transitions. [2020-10-23 20:20:15,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 20:20:15,740 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 213 [2020-10-23 20:20:15,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:15,746 INFO L225 Difference]: With dead ends: 1106 [2020-10-23 20:20:15,746 INFO L226 Difference]: Without dead ends: 660 [2020-10-23 20:20:15,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-23 20:20:15,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2020-10-23 20:20:15,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 564. [2020-10-23 20:20:15,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 564 states. [2020-10-23 20:20:15,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 619 transitions. [2020-10-23 20:20:15,947 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 619 transitions. Word has length 213 [2020-10-23 20:20:15,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:15,948 INFO L481 AbstractCegarLoop]: Abstraction has 564 states and 619 transitions. [2020-10-23 20:20:15,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:20:15,948 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 619 transitions. [2020-10-23 20:20:15,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-23 20:20:15,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:15,953 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:15,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:20:15,953 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 20:20:15,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:15,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1696080223, now seen corresponding path program 1 times [2020-10-23 20:20:15,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:15,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802793549] [2020-10-23 20:20:15,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:15,958 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:16,338 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:16,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:16,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:16,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:16,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:16,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:16,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:16,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:16,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:20:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:16,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:16,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:20:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:16,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:16,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:16,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:20:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:16,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:20:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:16,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-23 20:20:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:16,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-23 20:20:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:16,582 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 20:20:16,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802793549] [2020-10-23 20:20:16,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:16,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:20:16,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203292335] [2020-10-23 20:20:16,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:20:16,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:16,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:20:16,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:20:16,590 INFO L87 Difference]: Start difference. First operand 564 states and 619 transitions. Second operand 10 states. [2020-10-23 20:20:18,214 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:18,606 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:20:18,999 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-23 20:20:19,379 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:19,776 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:20,132 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:21,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:21,284 INFO L93 Difference]: Finished difference Result 1110 states and 1270 transitions. [2020-10-23 20:20:21,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 20:20:21,285 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 214 [2020-10-23 20:20:21,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:21,289 INFO L225 Difference]: With dead ends: 1110 [2020-10-23 20:20:21,289 INFO L226 Difference]: Without dead ends: 666 [2020-10-23 20:20:21,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-23 20:20:21,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2020-10-23 20:20:21,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 580. [2020-10-23 20:20:21,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-10-23 20:20:21,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 635 transitions. [2020-10-23 20:20:21,481 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 635 transitions. Word has length 214 [2020-10-23 20:20:21,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:21,482 INFO L481 AbstractCegarLoop]: Abstraction has 580 states and 635 transitions. [2020-10-23 20:20:21,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:20:21,482 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 635 transitions. [2020-10-23 20:20:21,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-23 20:20:21,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:21,485 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:21,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 20:20:21,486 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 20:20:21,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:21,486 INFO L82 PathProgramCache]: Analyzing trace with hash 2109711615, now seen corresponding path program 1 times [2020-10-23 20:20:21,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:21,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712086821] [2020-10-23 20:20:21,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:21,490 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:21,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:21,904 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:21,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:21,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:21,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:21,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:21,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:22,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:22,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:20:22,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:22,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:22,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:22,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:20:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:22,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:22,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:22,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:22,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:22,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:20:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:22,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:20:22,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:22,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-23 20:20:22,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:22,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-23 20:20:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:22,177 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 20:20:22,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712086821] [2020-10-23 20:20:22,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:22,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-23 20:20:22,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13555266] [2020-10-23 20:20:22,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 20:20:22,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:22,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 20:20:22,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-23 20:20:22,181 INFO L87 Difference]: Start difference. First operand 580 states and 635 transitions. Second operand 13 states. [2020-10-23 20:20:22,976 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:23,396 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:20:23,804 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:24,184 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:24,555 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:25,713 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:26,076 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:26,456 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:26,846 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:27,228 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:28,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:28,624 INFO L93 Difference]: Finished difference Result 1023 states and 1165 transitions. [2020-10-23 20:20:28,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:20:28,627 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 214 [2020-10-23 20:20:28,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:28,631 INFO L225 Difference]: With dead ends: 1023 [2020-10-23 20:20:28,631 INFO L226 Difference]: Without dead ends: 563 [2020-10-23 20:20:28,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-10-23 20:20:28,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-10-23 20:20:28,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 494. [2020-10-23 20:20:28,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2020-10-23 20:20:28,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 530 transitions. [2020-10-23 20:20:28,870 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 530 transitions. Word has length 214 [2020-10-23 20:20:28,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:28,870 INFO L481 AbstractCegarLoop]: Abstraction has 494 states and 530 transitions. [2020-10-23 20:20:28,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 20:20:28,871 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 530 transitions. [2020-10-23 20:20:28,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-23 20:20:28,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:28,874 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:28,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 20:20:28,874 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 20:20:28,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:28,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1188437743, now seen corresponding path program 1 times [2020-10-23 20:20:28,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:28,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590565193] [2020-10-23 20:20:28,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:28,879 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:28,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:29,373 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:29,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:29,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:29,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:29,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:29,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:29,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:29,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:29,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:20:29,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:29,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 20:20:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:29,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:29,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 20:20:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:29,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:29,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:29,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:29,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:20:29,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:29,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:20:29,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:29,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-23 20:20:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:29,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-23 20:20:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:29,713 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 20:20:29,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590565193] [2020-10-23 20:20:29,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:29,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:20:29,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888387478] [2020-10-23 20:20:29,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:20:29,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:29,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:20:29,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:20:29,715 INFO L87 Difference]: Start difference. First operand 494 states and 530 transitions. Second operand 14 states. [2020-10-23 20:20:30,771 WARN L193 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 207 [2020-10-23 20:20:31,820 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:33,923 WARN L193 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 209 [2020-10-23 20:20:34,702 WARN L193 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 211 [2020-10-23 20:20:35,160 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:35,561 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:36,290 WARN L193 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 210 [2020-10-23 20:20:36,689 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:37,117 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:37,486 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:39,180 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:39,539 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:39,927 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:40,712 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 207 [2020-10-23 20:20:42,347 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 209 [2020-10-23 20:20:43,108 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-10-23 20:20:43,879 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 210 [2020-10-23 20:20:44,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:44,234 INFO L93 Difference]: Finished difference Result 1351 states and 1528 transitions. [2020-10-23 20:20:44,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-23 20:20:44,235 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 219 [2020-10-23 20:20:44,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:44,242 INFO L225 Difference]: With dead ends: 1351 [2020-10-23 20:20:44,243 INFO L226 Difference]: Without dead ends: 1077 [2020-10-23 20:20:44,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=499, Invalid=1853, Unknown=0, NotChecked=0, Total=2352 [2020-10-23 20:20:44,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2020-10-23 20:20:44,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 979. [2020-10-23 20:20:44,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 979 states. [2020-10-23 20:20:44,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1056 transitions. [2020-10-23 20:20:44,639 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1056 transitions. Word has length 219 [2020-10-23 20:20:44,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:44,640 INFO L481 AbstractCegarLoop]: Abstraction has 979 states and 1056 transitions. [2020-10-23 20:20:44,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:20:44,640 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1056 transitions. [2020-10-23 20:20:44,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-23 20:20:44,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:44,644 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:44,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 20:20:44,644 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 20:20:44,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:44,645 INFO L82 PathProgramCache]: Analyzing trace with hash -656878068, now seen corresponding path program 1 times [2020-10-23 20:20:44,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:44,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822403503] [2020-10-23 20:20:44,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:44,937 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2020-10-23 20:20:45,353 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2020-10-23 20:20:45,684 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2020-10-23 20:20:46,072 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 75 [2020-10-23 20:20:46,465 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 75 [2020-10-23 20:20:46,846 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2020-10-23 20:20:47,257 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 78 [2020-10-23 20:20:47,635 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2020-10-23 20:20:48,012 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 68 [2020-10-23 20:20:48,353 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2020-10-23 20:20:48,693 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 68 [2020-10-23 20:20:49,072 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 78 [2020-10-23 20:20:49,182 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-23 20:20:49,460 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2020-10-23 20:20:49,864 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 78 [2020-10-23 20:20:49,984 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-23 20:20:50,884 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 220 [2020-10-23 20:20:51,734 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 220 [2020-10-23 20:20:52,628 WARN L193 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 220 [2020-10-23 20:20:53,494 WARN L193 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 220 [2020-10-23 20:20:53,502 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:20:54,374 WARN L193 SmtUtils]: Spent 758.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 222 [2020-10-23 20:20:55,220 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 222 [2020-10-23 20:20:56,029 WARN L193 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 222 [2020-10-23 20:20:56,870 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 222 [2020-10-23 20:20:56,885 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:20:57,638 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 221 [2020-10-23 20:20:58,423 WARN L193 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 221 [2020-10-23 20:20:59,232 WARN L193 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 221 [2020-10-23 20:21:00,023 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 221 [2020-10-23 20:21:00,030 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:00,599 WARN L193 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:01,182 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:01,737 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2020-10-23 20:21:02,318 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2020-10-23 20:21:02,871 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:03,426 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:04,002 WARN L193 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2020-10-23 20:21:04,594 WARN L193 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2020-10-23 20:21:04,598 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:05,161 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:05,734 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2020-10-23 20:21:06,320 WARN L193 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2020-10-23 20:21:06,886 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:07,456 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:08,041 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2020-10-23 20:21:08,621 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2020-10-23 20:21:09,177 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:09,180 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:09,777 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 163 [2020-10-23 20:21:10,332 WARN L193 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 164 [2020-10-23 20:21:10,893 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 164 [2020-10-23 20:21:11,434 WARN L193 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 163 [2020-10-23 20:21:12,004 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 163 [2020-10-23 20:21:12,600 WARN L193 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 164 [2020-10-23 20:21:13,139 WARN L193 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 164 [2020-10-23 20:21:13,678 WARN L193 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 163 [2020-10-23 20:21:13,682 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:14,263 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:14,836 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:15,415 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:15,984 WARN L193 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:16,580 WARN L193 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:17,150 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:17,712 WARN L193 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:18,306 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 167 [2020-10-23 20:21:18,313 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:19,105 WARN L193 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 217 [2020-10-23 20:21:19,872 WARN L193 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 217 [2020-10-23 20:21:20,643 WARN L193 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 217 [2020-10-23 20:21:21,409 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 217 [2020-10-23 20:21:21,421 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:22,165 WARN L193 SmtUtils]: Spent 674.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 214 [2020-10-23 20:21:22,917 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 214 [2020-10-23 20:21:23,697 WARN L193 SmtUtils]: Spent 674.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 214 [2020-10-23 20:21:24,438 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 214 [2020-10-23 20:21:24,451 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:25,205 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 216 [2020-10-23 20:21:25,963 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 216 [2020-10-23 20:21:26,723 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 216 [2020-10-23 20:21:27,462 WARN L193 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 216 [2020-10-23 20:21:27,468 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:28,204 WARN L193 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 213 [2020-10-23 20:21:28,929 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 213 [2020-10-23 20:21:29,675 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 213 [2020-10-23 20:21:30,417 WARN L193 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 213 [2020-10-23 20:21:30,423 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:30,993 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 168 [2020-10-23 20:21:31,581 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 168 [2020-10-23 20:21:32,175 WARN L193 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 168 [2020-10-23 20:21:32,772 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 168 [2020-10-23 20:21:33,364 WARN L193 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 168 [2020-10-23 20:21:33,942 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 168 [2020-10-23 20:21:34,526 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 168 [2020-10-23 20:21:35,128 WARN L193 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 168 [2020-10-23 20:21:35,131 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:35,965 WARN L193 SmtUtils]: Spent 743.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 222 [2020-10-23 20:21:36,796 WARN L193 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 222 [2020-10-23 20:21:37,601 WARN L193 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 222 [2020-10-23 20:21:38,413 WARN L193 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 222 [2020-10-23 20:21:38,420 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:38,998 WARN L193 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 169 [2020-10-23 20:21:39,568 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 169 [2020-10-23 20:21:40,145 WARN L193 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 169 [2020-10-23 20:21:40,730 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 169 [2020-10-23 20:21:41,308 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 169 [2020-10-23 20:21:41,887 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 169 [2020-10-23 20:21:42,482 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 169 [2020-10-23 20:21:43,054 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 169 [2020-10-23 20:21:43,058 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:21:43,367 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:21:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:21:43,658 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:21:43,865 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:21:43,866 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:21:43,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 20:21:43,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:21:43 BoogieIcfgContainer [2020-10-23 20:21:43,928 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:21:43,930 INFO L168 Benchmark]: Toolchain (without parser) took 121334.79 ms. Allocated memory was 151.0 MB in the beginning and 580.9 MB in the end (delta: 429.9 MB). Free memory was 126.9 MB in the beginning and 304.9 MB in the end (delta: -178.1 MB). Peak memory consumption was 252.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:21:43,930 INFO L168 Benchmark]: CDTParser took 3.08 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 125.4 MB in the end (delta: 80.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:21:43,931 INFO L168 Benchmark]: CACSL2BoogieTranslator took 574.28 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 105.3 MB in the end (delta: 20.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:21:43,931 INFO L168 Benchmark]: Boogie Preprocessor took 140.79 ms. Allocated memory is still 151.0 MB. Free memory was 105.1 MB in the beginning and 131.6 MB in the end (delta: -26.5 MB). Peak memory consumption was 4.8 MB. Max. memory is 8.0 GB. [2020-10-23 20:21:43,932 INFO L168 Benchmark]: RCFGBuilder took 1576.06 ms. Allocated memory is still 151.0 MB. Free memory was 131.6 MB in the beginning and 86.5 MB in the end (delta: 45.1 MB). Peak memory consumption was 62.9 MB. Max. memory is 8.0 GB. [2020-10-23 20:21:43,932 INFO L168 Benchmark]: TraceAbstraction took 119031.49 ms. Allocated memory was 151.0 MB in the beginning and 580.9 MB in the end (delta: 429.9 MB). Free memory was 86.0 MB in the beginning and 304.9 MB in the end (delta: -218.9 MB). Peak memory consumption was 211.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:21:43,937 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.08 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 125.4 MB in the end (delta: 80.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 574.28 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 105.3 MB in the end (delta: 20.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 140.79 ms. Allocated memory is still 151.0 MB. Free memory was 105.1 MB in the beginning and 131.6 MB in the end (delta: -26.5 MB). Peak memory consumption was 4.8 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1576.06 ms. Allocated memory is still 151.0 MB. Free memory was 131.6 MB in the beginning and 86.5 MB in the end (delta: 45.1 MB). Peak memory consumption was 62.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 119031.49 ms. Allocated memory was 151.0 MB in the beginning and 580.9 MB in the end (delta: 429.9 MB). Free memory was 86.0 MB in the beginning and 304.9 MB in the end (delta: -218.9 MB). Peak memory consumption was 211.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L49] int waterLevel = 1; [L50] int methaneLevelCritical = 0; [L145] int switchedOnBeforeTS ; [L194] int cleanupTimeShifts = 4; [L308] int pumpRunning = 0; [L309] int systemActive = 1; [L758] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L274] int retValue_acc ; [L275] int tmp ; [L279] FCALL select_helpers() [L280] FCALL select_features() [L281] CALL, EXPR valid_product() [L580] int retValue_acc ; [L583] retValue_acc = 1 [L584] return (retValue_acc); [L281] RET, EXPR valid_product() [L281] tmp = valid_product() [L283] COND TRUE \read(tmp) [L285] FCALL setup() [L286] CALL runTest() [L264] CALL __utac_acc__Specification5_spec__1() [L150] switchedOnBeforeTS = 0 [L264] RET __utac_acc__Specification5_spec__1() [L265] CALL test() [L490] int splverifierCounter ; [L491] int tmp ; [L492] int tmp___0 ; [L493] int tmp___1 ; [L494] int tmp___2 ; [L497] splverifierCounter = 0 [L499] COND TRUE 1 [L501] COND TRUE splverifierCounter < 4 [L507] tmp = __VERIFIER_nondet_int() [L509] COND TRUE \read(tmp) [L511] CALL waterRise() [L67] COND TRUE waterLevel < 2 [L68] waterLevel = waterLevel + 1 [L511] RET waterRise() [L517] tmp___0 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___0)) [L527] tmp___2 = __VERIFIER_nondet_int() [L529] COND TRUE \read(tmp___2) [L542] CALL timeShift() [L316] CALL __utac_acc__Specification5_spec__2() [L159] CALL, EXPR isPumpRunning() [L425] int retValue_acc ; [L428] retValue_acc = pumpRunning [L429] return (retValue_acc); [L159] RET, EXPR isPumpRunning() [L159] switchedOnBeforeTS = isPumpRunning() [L316] RET __utac_acc__Specification5_spec__2() [L318] COND FALSE !(\read(pumpRunning)) [L325] COND TRUE \read(systemActive) [L327] CALL processEnvironment() [L373] int tmp ; [L376] COND FALSE !(\read(pumpRunning)) [L391] CALL processEnvironment__wrappee__highWaterSensor() [L347] int tmp ; [L350] COND TRUE ! pumpRunning [L352] CALL, EXPR isHighWaterLevel() [L470] int retValue_acc ; [L471] int tmp ; [L472] int tmp___0 ; [L476] CALL, EXPR isHighWaterSensorDry() [L129] int retValue_acc ; [L132] COND FALSE !(waterLevel < 2) [L136] retValue_acc = 0 [L137] return (retValue_acc); [L476] RET, EXPR isHighWaterSensorDry() [L476] tmp = isHighWaterSensorDry() [L478] COND FALSE !(\read(tmp)) [L481] tmp___0 = 1 [L483] retValue_acc = tmp___0 [L484] return (retValue_acc); [L352] RET, EXPR isHighWaterLevel() [L352] tmp = isHighWaterLevel() [L354] COND TRUE \read(tmp) [L356] CALL activatePump() [L401] pumpRunning = 1 [L356] RET activatePump() [L391] RET processEnvironment__wrappee__highWaterSensor() [L327] RET processEnvironment() [L333] CALL __utac_acc__Specification5_spec__3() [L165] int tmp ; [L166] int tmp___0 ; [L170] CALL, EXPR getWaterLevel() [L120] int retValue_acc ; [L123] retValue_acc = waterLevel [L124] return (retValue_acc); [L170] RET, EXPR getWaterLevel() [L170] tmp = getWaterLevel() [L172] COND FALSE !(tmp != 2) [L333] RET __utac_acc__Specification5_spec__3() [L542] RET timeShift() [L499] COND TRUE 1 [L501] COND TRUE splverifierCounter < 4 [L507] tmp = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp)) [L517] tmp___0 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___0)) [L527] tmp___2 = __VERIFIER_nondet_int() [L529] COND TRUE \read(tmp___2) [L542] CALL timeShift() [L316] CALL __utac_acc__Specification5_spec__2() [L159] CALL, EXPR isPumpRunning() [L425] int retValue_acc ; [L428] retValue_acc = pumpRunning [L429] return (retValue_acc); [L159] RET, EXPR isPumpRunning() [L159] switchedOnBeforeTS = isPumpRunning() [L316] RET __utac_acc__Specification5_spec__2() [L318] COND TRUE \read(pumpRunning) [L320] CALL lowerWaterLevel() [L55] COND TRUE waterLevel > 0 [L56] waterLevel = waterLevel - 1 [L320] RET lowerWaterLevel() [L325] COND TRUE \read(systemActive) [L327] CALL processEnvironment() [L373] int tmp ; [L376] COND TRUE \read(pumpRunning) [L378] CALL, EXPR isMethaneAlarm() [L414] int retValue_acc ; [L418] CALL, EXPR isMethaneLevelCritical() [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); [L418] RET, EXPR isMethaneLevelCritical() [L418] retValue_acc = isMethaneLevelCritical() [L420] return (retValue_acc); [L378] RET, EXPR isMethaneAlarm() [L378] tmp = isMethaneAlarm() [L380] COND FALSE !(\read(tmp)) [L386] CALL processEnvironment__wrappee__highWaterSensor() [L347] int tmp ; [L350] COND FALSE !(! pumpRunning) [L365] FCALL processEnvironment__wrappee__base() [L386] RET processEnvironment__wrappee__highWaterSensor() [L327] RET processEnvironment() [L333] CALL __utac_acc__Specification5_spec__3() [L165] int tmp ; [L166] int tmp___0 ; [L170] CALL, EXPR getWaterLevel() [L120] int retValue_acc ; [L123] retValue_acc = waterLevel [L124] return (retValue_acc); [L170] RET, EXPR getWaterLevel() [L170] tmp = getWaterLevel() [L172] COND TRUE tmp != 2 [L174] CALL, EXPR isPumpRunning() [L425] int retValue_acc ; [L428] retValue_acc = pumpRunning [L429] return (retValue_acc); [L174] RET, EXPR isPumpRunning() [L174] tmp___0 = isPumpRunning() [L176] COND TRUE \read(tmp___0) [L177] COND TRUE ! switchedOnBeforeTS [L179] CALL __automaton_fail() [L301] CALL reach_error() [L3] __assert_fail("0", "minepump_spec5_product37.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 644 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 118.9s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 50.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2350 SDtfs, 5497 SDslu, 5106 SDs, 0 SdLazy, 9489 SolverSat, 1594 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 444 GetRequests, 282 SyntacticMatches, 2 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 28.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=979occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 650 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...