/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_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:19:58,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:19:58,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:19:58,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:19:58,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:19:58,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:19:58,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:19:58,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:19:58,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:19:58,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:19:58,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:19:58,975 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:19:58,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:19:58,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:19:58,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:19:58,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:19:58,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:19:58,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:19:58,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:19:58,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:19:58,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:19:58,990 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:19:58,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:19:58,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:19:58,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:19:58,996 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:19:58,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:19:58,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:19:58,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:19:59,000 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:19:59,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:19:59,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:19:59,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:19:59,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:19:59,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:19:59,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:19:59,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:19:59,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:19:59,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:19:59,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:19:59,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:19:59,009 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 20:19:59,021 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:19:59,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:19:59,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:19:59,023 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:19:59,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:19:59,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:19:59,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:19:59,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:19:59,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:19:59,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:19:59,025 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:19:59,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:19:59,025 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:19:59,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:19:59,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:19:59,026 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:19:59,026 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:19:59,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:19:59,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:19:59,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:19:59,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:19:59,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:19:59,027 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:19:59,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:19:59,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:19:59,421 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:19:59,423 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:19:59,425 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:19:59,426 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product42.cil.c [2020-10-23 20:19:59,511 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/865a64b2b/362b3e503ce24b169f27b4ac8dc9978f/FLAG9fdcbe534 [2020-10-23 20:20:00,203 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:20:00,204 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product42.cil.c [2020-10-23 20:20:00,225 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/865a64b2b/362b3e503ce24b169f27b4ac8dc9978f/FLAG9fdcbe534 [2020-10-23 20:20:00,528 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/865a64b2b/362b3e503ce24b169f27b4ac8dc9978f [2020-10-23 20:20:00,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:20:00,546 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:20:00,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:20:00,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:20:00,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:20:00,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:20:00" (1/1) ... [2020-10-23 20:20:00,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fcf8fa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:00, skipping insertion in model container [2020-10-23 20:20:00,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:20:00" (1/1) ... [2020-10-23 20:20:00,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:20:00,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:20:00,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:20:00,967 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:20:01,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:20:01,162 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:20:01,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:01 WrapperNode [2020-10-23 20:20:01,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:20:01,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:20:01,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:20:01,165 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:20:01,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:01" (1/1) ... [2020-10-23 20:20:01,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:01" (1/1) ... [2020-10-23 20:20:01,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:01" (1/1) ... [2020-10-23 20:20:01,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:01" (1/1) ... [2020-10-23 20:20:01,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:01" (1/1) ... [2020-10-23 20:20:01,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:01" (1/1) ... [2020-10-23 20:20:01,265 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:01" (1/1) ... [2020-10-23 20:20:01,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:20:01,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:20:01,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:20:01,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:20:01,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:01" (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 20:20:01,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:20:01,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:20:01,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 20:20:01,353 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:20:01,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:20:01,354 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:20:01,354 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:20:01,354 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 20:20:01,354 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 20:20:01,354 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 20:20:01,354 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 20:20:01,355 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:20:01,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 20:20:01,355 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 20:20:01,355 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 20:20:01,355 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 20:20:01,355 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 20:20:01,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 20:20:01,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 20:20:01,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 20:20:01,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 20:20:01,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 20:20:01,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 20:20:01,357 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 20:20:01,357 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 20:20:01,357 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 20:20:01,357 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 20:20:01,357 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 20:20:01,357 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 20:20:01,358 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 20:20:01,358 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 20:20:01,358 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 20:20:01,358 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 20:20:01,358 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 20:20:01,358 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-10-23 20:20:01,359 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 20:20:01,359 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 20:20:01,359 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 20:20:01,359 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 20:20:01,359 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 20:20:01,359 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 20:20:01,360 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-10-23 20:20:01,360 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:20:01,360 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:20:01,360 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:20:01,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:20:01,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:20:01,361 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 20:20:01,361 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 20:20:01,361 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 20:20:01,361 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 20:20:01,361 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:20:01,361 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:20:01,362 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:20:01,362 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 20:20:01,362 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 20:20:01,362 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 20:20:01,362 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 20:20:01,362 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 20:20:01,362 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 20:20:01,363 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 20:20:01,363 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 20:20:01,363 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 20:20:01,363 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 20:20:01,363 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 20:20:01,363 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 20:20:01,364 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:20:01,364 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 20:20:01,364 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:20:01,364 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:20:01,364 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 20:20:01,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:20:01,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:20:01,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:20:01,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:20:01,365 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 20:20:01,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:20:01,365 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 20:20:01,366 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 20:20:01,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:20:01,366 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 20:20:01,366 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 20:20:01,366 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 20:20:01,366 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 20:20:01,367 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 20:20:01,367 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 20:20:01,367 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 20:20:01,367 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-10-23 20:20:01,367 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 20:20:01,368 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 20:20:01,368 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 20:20:01,368 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 20:20:01,371 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 20:20:01,371 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-10-23 20:20:01,371 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 20:20:01,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:20:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:20:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:20:02,708 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:20:02,709 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 20:20:02,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:20:02 BoogieIcfgContainer [2020-10-23 20:20:02,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:20:02,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:20:02,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:20:02,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:20:02,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:20:00" (1/3) ... [2020-10-23 20:20:02,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59818d98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:20:02, skipping insertion in model container [2020-10-23 20:20:02,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:01" (2/3) ... [2020-10-23 20:20:02,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59818d98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:20:02, skipping insertion in model container [2020-10-23 20:20:02,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:20:02" (3/3) ... [2020-10-23 20:20:02,720 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product42.cil.c [2020-10-23 20:20:02,732 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:20:02,738 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 20:20:02,751 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 20:20:02,775 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:20:02,775 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:20:02,776 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:20:02,776 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:20:02,776 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:20:02,776 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:20:02,776 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:20:02,776 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:20:02,800 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states. [2020-10-23 20:20:02,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-23 20:20:02,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:02,822 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 20:20:02,823 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 20:20:02,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:02,829 INFO L82 PathProgramCache]: Analyzing trace with hash -647436455, now seen corresponding path program 1 times [2020-10-23 20:20:02,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:02,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799540258] [2020-10-23 20:20:02,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:02,910 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:03,689 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:03,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:03,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:03,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:03,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:03,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:03,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:03,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:03,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:03,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 20:20:03,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:03,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:03,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 20:20:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:03,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 20:20:03,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:03,994 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 20:20:03,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799540258] [2020-10-23 20:20:04,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:04,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:20:04,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357390737] [2020-10-23 20:20:04,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:20:04,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:04,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:20:04,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:20:04,026 INFO L87 Difference]: Start difference. First operand 326 states. Second operand 4 states. [2020-10-23 20:20:05,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:05,648 INFO L93 Difference]: Finished difference Result 503 states and 585 transitions. [2020-10-23 20:20:05,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:20:05,650 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-10-23 20:20:05,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:05,666 INFO L225 Difference]: With dead ends: 503 [2020-10-23 20:20:05,667 INFO L226 Difference]: Without dead ends: 318 [2020-10-23 20:20:05,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:20:05,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-23 20:20:05,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 272. [2020-10-23 20:20:05,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-10-23 20:20:05,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 293 transitions. [2020-10-23 20:20:05,854 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 293 transitions. Word has length 166 [2020-10-23 20:20:05,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:05,855 INFO L481 AbstractCegarLoop]: Abstraction has 272 states and 293 transitions. [2020-10-23 20:20:05,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:20:05,855 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 293 transitions. [2020-10-23 20:20:05,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-23 20:20:05,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:05,861 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 20:20:05,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:20:05,862 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 20:20:05,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:05,862 INFO L82 PathProgramCache]: Analyzing trace with hash -17260772, now seen corresponding path program 1 times [2020-10-23 20:20:05,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:05,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983535032] [2020-10-23 20:20:05,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:05,868 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:05,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:06,353 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:06,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:06,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:06,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:06,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:06,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:06,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:06,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:06,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:06,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:20:06,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:06,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:06,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:06,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-23 20:20:06,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:06,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:20:06,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:06,542 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 20:20:06,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983535032] [2020-10-23 20:20:06,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:06,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 20:20:06,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369573207] [2020-10-23 20:20:06,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 20:20:06,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:06,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 20:20:06,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:20:06,546 INFO L87 Difference]: Start difference. First operand 272 states and 293 transitions. Second operand 5 states. [2020-10-23 20:20:07,414 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:08,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:08,576 INFO L93 Difference]: Finished difference Result 425 states and 473 transitions. [2020-10-23 20:20:08,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 20:20:08,577 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-23 20:20:08,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:08,582 INFO L225 Difference]: With dead ends: 425 [2020-10-23 20:20:08,582 INFO L226 Difference]: Without dead ends: 307 [2020-10-23 20:20:08,584 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 20:20:08,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-10-23 20:20:08,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 262. [2020-10-23 20:20:08,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-23 20:20:08,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 280 transitions. [2020-10-23 20:20:08,707 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 280 transitions. Word has length 167 [2020-10-23 20:20:08,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:08,708 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 280 transitions. [2020-10-23 20:20:08,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 20:20:08,709 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 280 transitions. [2020-10-23 20:20:08,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-23 20:20:08,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:08,712 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] [2020-10-23 20:20:08,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:20:08,713 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 20:20:08,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:08,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1286161230, now seen corresponding path program 1 times [2020-10-23 20:20:08,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:08,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282235800] [2020-10-23 20:20:08,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:08,718 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:09,184 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:09,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:09,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:09,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:09,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:09,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:09,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:09,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:09,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:09,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:20:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:09,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:20:09,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:09,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:09,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-23 20:20:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:09,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-23 20:20:09,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:09,405 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 20:20:09,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282235800] [2020-10-23 20:20:09,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:09,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:20:09,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555589944] [2020-10-23 20:20:09,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 20:20:09,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:09,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 20:20:09,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:20:09,409 INFO L87 Difference]: Start difference. First operand 262 states and 280 transitions. Second operand 11 states. [2020-10-23 20:20:10,153 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:10,643 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:11,038 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-23 20:20:11,436 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:11,852 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:12,229 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:14,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:14,179 INFO L93 Difference]: Finished difference Result 472 states and 538 transitions. [2020-10-23 20:20:14,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 20:20:14,180 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 180 [2020-10-23 20:20:14,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:14,184 INFO L225 Difference]: With dead ends: 472 [2020-10-23 20:20:14,184 INFO L226 Difference]: Without dead ends: 330 [2020-10-23 20:20:14,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2020-10-23 20:20:14,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-10-23 20:20:14,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 262. [2020-10-23 20:20:14,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-23 20:20:14,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 279 transitions. [2020-10-23 20:20:14,288 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 279 transitions. Word has length 180 [2020-10-23 20:20:14,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:14,289 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 279 transitions. [2020-10-23 20:20:14,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 20:20:14,289 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 279 transitions. [2020-10-23 20:20:14,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-23 20:20:14,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:14,292 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] [2020-10-23 20:20:14,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:20:14,293 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 20:20:14,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:14,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1755993089, now seen corresponding path program 1 times [2020-10-23 20:20:14,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:14,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101413415] [2020-10-23 20:20:14,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:14,298 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:14,746 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:14,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:14,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:14,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:14,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:14,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:14,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:14,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:20:14,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:14,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:20:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:14,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:14,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:20:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:14,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:14,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:14,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-23 20:20:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:14,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-23 20:20:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:14,942 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 20:20:14,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101413415] [2020-10-23 20:20:14,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:14,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 20:20:14,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511580358] [2020-10-23 20:20:14,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 20:20:14,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:14,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 20:20:14,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-23 20:20:14,946 INFO L87 Difference]: Start difference. First operand 262 states and 279 transitions. Second operand 8 states. [2020-10-23 20:20:15,629 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:18,193 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:18,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:18,868 INFO L93 Difference]: Finished difference Result 654 states and 773 transitions. [2020-10-23 20:20:18,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-23 20:20:18,869 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 188 [2020-10-23 20:20:18,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:18,874 INFO L225 Difference]: With dead ends: 654 [2020-10-23 20:20:18,874 INFO L226 Difference]: Without dead ends: 512 [2020-10-23 20:20:18,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2020-10-23 20:20:18,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2020-10-23 20:20:19,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 372. [2020-10-23 20:20:19,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-10-23 20:20:19,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 402 transitions. [2020-10-23 20:20:19,029 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 402 transitions. Word has length 188 [2020-10-23 20:20:19,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:19,030 INFO L481 AbstractCegarLoop]: Abstraction has 372 states and 402 transitions. [2020-10-23 20:20:19,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 20:20:19,030 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 402 transitions. [2020-10-23 20:20:19,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-23 20:20:19,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:19,034 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:19,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:20:19,034 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 20:20:19,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:19,035 INFO L82 PathProgramCache]: Analyzing trace with hash -399459498, now seen corresponding path program 1 times [2020-10-23 20:20:19,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:19,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425770687] [2020-10-23 20:20:19,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:19,039 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:19,458 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:19,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:19,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:19,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:19,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:19,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:19,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:19,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:20:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:19,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:20:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:19,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:19,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:20:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:19,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:19,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:19,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:20:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:19,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:20:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:19,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-23 20:20:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:19,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-23 20:20:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:19,750 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 20:20:19,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425770687] [2020-10-23 20:20:19,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:19,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:20:19,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018208143] [2020-10-23 20:20:19,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 20:20:19,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:19,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 20:20:19,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:20:19,753 INFO L87 Difference]: Start difference. First operand 372 states and 402 transitions. Second operand 11 states. [2020-10-23 20:20:20,475 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:22,093 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:22,500 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:20:22,895 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:23,274 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:23,745 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:20:24,149 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:26,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:26,521 INFO L93 Difference]: Finished difference Result 1076 states and 1322 transitions. [2020-10-23 20:20:26,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-23 20:20:26,534 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 212 [2020-10-23 20:20:26,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:26,541 INFO L225 Difference]: With dead ends: 1076 [2020-10-23 20:20:26,541 INFO L226 Difference]: Without dead ends: 824 [2020-10-23 20:20:26,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=188, Invalid=568, Unknown=0, NotChecked=0, Total=756 [2020-10-23 20:20:26,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2020-10-23 20:20:26,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 584. [2020-10-23 20:20:26,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2020-10-23 20:20:26,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 642 transitions. [2020-10-23 20:20:26,767 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 642 transitions. Word has length 212 [2020-10-23 20:20:26,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:26,767 INFO L481 AbstractCegarLoop]: Abstraction has 584 states and 642 transitions. [2020-10-23 20:20:26,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 20:20:26,768 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 642 transitions. [2020-10-23 20:20:26,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-23 20:20:26,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:26,771 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:26,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:20:26,772 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 20:20:26,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:26,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1731663193, now seen corresponding path program 1 times [2020-10-23 20:20:26,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:26,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137365339] [2020-10-23 20:20:26,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:26,777 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:27,193 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:27,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:27,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:27,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:27,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:27,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:27,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:27,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:27,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:27,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:27,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:20:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:27,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:20:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:27,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:27,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:27,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:20:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:27,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:27,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:27,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:20:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:27,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:20:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:27,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-23 20:20:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:27,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-23 20:20:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:27,452 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 20:20:27,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137365339] [2020-10-23 20:20:27,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:27,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:20:27,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212712942] [2020-10-23 20:20:27,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 20:20:27,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:27,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 20:20:27,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:20:27,456 INFO L87 Difference]: Start difference. First operand 584 states and 642 transitions. Second operand 11 states. [2020-10-23 20:20:28,145 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:29,257 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:29,626 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:31,234 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:31,594 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:32,034 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:32,851 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:33,227 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:33,607 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:34,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:34,260 INFO L93 Difference]: Finished difference Result 1281 states and 1517 transitions. [2020-10-23 20:20:34,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-23 20:20:34,261 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 212 [2020-10-23 20:20:34,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:34,268 INFO L225 Difference]: With dead ends: 1281 [2020-10-23 20:20:34,268 INFO L226 Difference]: Without dead ends: 817 [2020-10-23 20:20:34,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=234, Invalid=578, Unknown=0, NotChecked=0, Total=812 [2020-10-23 20:20:34,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2020-10-23 20:20:34,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 582. [2020-10-23 20:20:34,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2020-10-23 20:20:34,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 636 transitions. [2020-10-23 20:20:34,506 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 636 transitions. Word has length 212 [2020-10-23 20:20:34,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:34,507 INFO L481 AbstractCegarLoop]: Abstraction has 582 states and 636 transitions. [2020-10-23 20:20:34,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 20:20:34,507 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 636 transitions. [2020-10-23 20:20:34,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-23 20:20:34,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:34,512 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:34,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:20:34,512 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 20:20:34,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:34,513 INFO L82 PathProgramCache]: Analyzing trace with hash 2126620374, now seen corresponding path program 1 times [2020-10-23 20:20:34,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:34,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118758105] [2020-10-23 20:20:34,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:34,518 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,939 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:34,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:34,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:34,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:35,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:20:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:35,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:20:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:35,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:35,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:20:35,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:35,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:35,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:35,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:20:35,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:35,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:20:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:35,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:20:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:35,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:20:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:35,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:20:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:35,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-23 20:20:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:35,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-23 20:20:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:35,183 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 20:20:35,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118758105] [2020-10-23 20:20:35,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:35,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:20:35,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510414797] [2020-10-23 20:20:35,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 20:20:35,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:35,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 20:20:35,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:20:35,191 INFO L87 Difference]: Start difference. First operand 582 states and 636 transitions. Second operand 11 states. [2020-10-23 20:20:36,841 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:37,229 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:20:37,632 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-23 20:20:38,029 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:38,423 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:38,796 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:40,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:40,360 INFO L93 Difference]: Finished difference Result 1289 states and 1540 transitions. [2020-10-23 20:20:40,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 20:20:40,361 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 235 [2020-10-23 20:20:40,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:40,367 INFO L225 Difference]: With dead ends: 1289 [2020-10-23 20:20:40,368 INFO L226 Difference]: Without dead ends: 827 [2020-10-23 20:20:40,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-10-23 20:20:40,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2020-10-23 20:20:40,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 598. [2020-10-23 20:20:40,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2020-10-23 20:20:40,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 652 transitions. [2020-10-23 20:20:40,661 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 652 transitions. Word has length 235 [2020-10-23 20:20:40,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:40,661 INFO L481 AbstractCegarLoop]: Abstraction has 598 states and 652 transitions. [2020-10-23 20:20:40,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 20:20:40,661 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 652 transitions. [2020-10-23 20:20:40,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-23 20:20:40,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:40,666 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:40,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 20:20:40,666 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 20:20:40,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:40,667 INFO L82 PathProgramCache]: Analyzing trace with hash -484238730, now seen corresponding path program 1 times [2020-10-23 20:20:40,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:40,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391145443] [2020-10-23 20:20:40,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:40,671 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:41,056 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:41,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:41,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:41,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:41,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:41,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:41,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:41,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:41,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:20:41,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:41,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:20:41,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:41,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:41,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:41,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:20:41,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:41,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:41,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:20:41,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:41,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:20:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:41,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:20:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:41,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:20:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:41,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:20:41,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:41,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-23 20:20:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:41,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-23 20:20:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:41,328 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 20:20:41,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391145443] [2020-10-23 20:20:41,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:41,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:20:41,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357449213] [2020-10-23 20:20:41,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:20:41,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:41,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:20:41,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:20:41,331 INFO L87 Difference]: Start difference. First operand 598 states and 652 transitions. Second operand 14 states. [2020-10-23 20:20:42,116 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:42,513 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:20:42,890 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:43,263 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:43,628 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:44,883 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:45,252 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:45,628 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:46,030 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:46,398 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:48,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:48,025 INFO L93 Difference]: Finished difference Result 1127 states and 1321 transitions. [2020-10-23 20:20:48,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 20:20:48,026 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 235 [2020-10-23 20:20:48,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:48,031 INFO L225 Difference]: With dead ends: 1127 [2020-10-23 20:20:48,031 INFO L226 Difference]: Without dead ends: 649 [2020-10-23 20:20:48,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-10-23 20:20:48,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2020-10-23 20:20:48,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 486. [2020-10-23 20:20:48,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-10-23 20:20:48,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 521 transitions. [2020-10-23 20:20:48,244 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 521 transitions. Word has length 235 [2020-10-23 20:20:48,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:48,244 INFO L481 AbstractCegarLoop]: Abstraction has 486 states and 521 transitions. [2020-10-23 20:20:48,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:20:48,245 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 521 transitions. [2020-10-23 20:20:48,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-23 20:20:48,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:48,251 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:48,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 20:20:48,251 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 20:20:48,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:48,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1022315941, now seen corresponding path program 1 times [2020-10-23 20:20:48,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:48,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184818654] [2020-10-23 20:20:48,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:48,256 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:48,724 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:48,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:48,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:48,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:48,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:48,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:48,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:48,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:48,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:20:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:48,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:20:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:48,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 20:20:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:48,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:48,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-23 20:20:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:48,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:48,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:20:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:48,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:20:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:48,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:20:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:48,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:20:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:48,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:20:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:48,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-23 20:20:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:49,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-23 20:20:49,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:49,127 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 20:20:49,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184818654] [2020-10-23 20:20:49,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:49,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-23 20:20:49,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417025790] [2020-10-23 20:20:49,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 20:20:49,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:49,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 20:20:49,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-23 20:20:49,130 INFO L87 Difference]: Start difference. First operand 486 states and 521 transitions. Second operand 15 states. [2020-10-23 20:20:50,201 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 207 [2020-10-23 20:20:51,233 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:53,257 WARN L193 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 209 [2020-10-23 20:20:54,007 WARN L193 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 211 [2020-10-23 20:20:54,477 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:54,880 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:55,621 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 210 [2020-10-23 20:20:56,007 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:56,456 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:56,892 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:58,867 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:59,231 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:59,622 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:00,458 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 207 [2020-10-23 20:21:01,827 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 209 [2020-10-23 20:21:02,562 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-10-23 20:21:03,374 WARN L193 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 210 [2020-10-23 20:21:04,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:21:04,470 INFO L93 Difference]: Finished difference Result 1480 states and 1746 transitions. [2020-10-23 20:21:04,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-23 20:21:04,471 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 240 [2020-10-23 20:21:04,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:21:04,480 INFO L225 Difference]: With dead ends: 1480 [2020-10-23 20:21:04,480 INFO L226 Difference]: Without dead ends: 1213 [2020-10-23 20:21:04,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=702, Invalid=2604, Unknown=0, NotChecked=0, Total=3306 [2020-10-23 20:21:04,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2020-10-23 20:21:04,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 933. [2020-10-23 20:21:04,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 933 states. [2020-10-23 20:21:04,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1005 transitions. [2020-10-23 20:21:04,966 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1005 transitions. Word has length 240 [2020-10-23 20:21:04,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:21:04,966 INFO L481 AbstractCegarLoop]: Abstraction has 933 states and 1005 transitions. [2020-10-23 20:21:04,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 20:21:04,967 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1005 transitions. [2020-10-23 20:21:04,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-23 20:21:04,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:04,972 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, 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 20:21:04,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 20:21:04,972 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 20:21:04,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:04,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1647873652, now seen corresponding path program 1 times [2020-10-23 20:21:04,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:04,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209597940] [2020-10-23 20:21:04,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:05,423 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 92 [2020-10-23 20:21:05,579 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-23 20:21:06,033 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 93 [2020-10-23 20:21:06,165 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-23 20:21:06,587 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 87 [2020-10-23 20:21:06,705 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-23 20:21:07,095 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 83 [2020-10-23 20:21:07,206 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-23 20:21:07,602 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 84 [2020-10-23 20:21:07,715 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-23 20:21:08,111 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 83 [2020-10-23 20:21:08,223 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-23 20:21:08,674 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 93 [2020-10-23 20:21:08,810 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-23 20:21:09,228 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 87 [2020-10-23 20:21:09,352 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-23 20:21:09,787 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 93 [2020-10-23 20:21:09,920 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-23 20:21:10,306 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 84 [2020-10-23 20:21:10,421 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-23 20:21:10,838 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 87 [2020-10-23 20:21:10,964 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-23 20:21:11,347 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 84 [2020-10-23 20:21:11,462 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-23 20:21:11,905 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 92 [2020-10-23 20:21:12,045 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-23 20:21:12,476 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 92 [2020-10-23 20:21:12,628 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-23 20:21:13,420 WARN L193 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 201 [2020-10-23 20:21:14,219 WARN L193 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 201 [2020-10-23 20:21:15,043 WARN L193 SmtUtils]: Spent 778.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 202 [2020-10-23 20:21:15,821 WARN L193 SmtUtils]: Spent 731.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 202 [2020-10-23 20:21:15,824 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:16,629 WARN L193 SmtUtils]: Spent 779.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 205 [2020-10-23 20:21:17,475 WARN L193 SmtUtils]: Spent 781.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 205 [2020-10-23 20:21:18,320 WARN L193 SmtUtils]: Spent 812.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 205 [2020-10-23 20:21:19,125 WARN L193 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 205 [2020-10-23 20:21:19,130 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:20,309 WARN L193 SmtUtils]: Spent 992.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 260 [2020-10-23 20:21:21,469 WARN L193 SmtUtils]: Spent 976.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 260 [2020-10-23 20:21:21,487 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:22,577 WARN L193 SmtUtils]: Spent 949.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 256 [2020-10-23 20:21:23,634 WARN L193 SmtUtils]: Spent 914.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 256 [2020-10-23 20:21:23,651 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:24,705 WARN L193 SmtUtils]: Spent 927.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 259 [2020-10-23 20:21:25,823 WARN L193 SmtUtils]: Spent 983.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 259 [2020-10-23 20:21:25,831 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:26,877 WARN L193 SmtUtils]: Spent 922.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 256 [2020-10-23 20:21:27,981 WARN L193 SmtUtils]: Spent 962.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 256 [2020-10-23 20:21:27,987 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:28,804 WARN L193 SmtUtils]: Spent 786.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 205 [2020-10-23 20:21:29,643 WARN L193 SmtUtils]: Spent 817.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 205 [2020-10-23 20:21:30,452 WARN L193 SmtUtils]: Spent 785.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 205 [2020-10-23 20:21:31,271 WARN L193 SmtUtils]: Spent 785.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 205 [2020-10-23 20:21:31,274 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:32,429 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 267 DAG size of output: 265 [2020-10-23 20:21:33,554 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 267 DAG size of output: 265 [2020-10-23 20:21:33,562 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:34,372 WARN L193 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 205 [2020-10-23 20:21:35,183 WARN L193 SmtUtils]: Spent 781.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 205 [2020-10-23 20:21:36,016 WARN L193 SmtUtils]: Spent 808.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 205 [2020-10-23 20:21:36,851 WARN L193 SmtUtils]: Spent 796.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 205 [2020-10-23 20:21:36,855 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:37,908 WARN L193 SmtUtils]: Spent 964.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 263 [2020-10-23 20:21:38,976 WARN L193 SmtUtils]: Spent 960.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 263 [2020-10-23 20:21:38,983 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:40,076 WARN L193 SmtUtils]: Spent 991.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 264 [2020-10-23 20:21:41,195 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 266 DAG size of output: 264 [2020-10-23 20:21:41,204 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:42,285 WARN L193 SmtUtils]: Spent 963.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 263 [2020-10-23 20:21:43,349 WARN L193 SmtUtils]: Spent 958.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 263 [2020-10-23 20:21:43,363 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:44,175 WARN L193 SmtUtils]: Spent 785.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 201 [2020-10-23 20:21:44,980 WARN L193 SmtUtils]: Spent 783.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 200 [2020-10-23 20:21:45,789 WARN L193 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 201 [2020-10-23 20:21:46,603 WARN L193 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 200 [2020-10-23 20:21:46,606 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:47,401 WARN L193 SmtUtils]: Spent 775.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 201 [2020-10-23 20:21:48,249 WARN L193 SmtUtils]: Spent 825.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 202 [2020-10-23 20:21:49,077 WARN L193 SmtUtils]: Spent 805.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 202 [2020-10-23 20:21:49,891 WARN L193 SmtUtils]: Spent 781.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 201 [2020-10-23 20:21:49,894 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:21:50,041 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:21:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:21:50,182 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:21:50,377 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:21:50,377 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:21:50,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 20:21:50,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:21:50 BoogieIcfgContainer [2020-10-23 20:21:50,409 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:21:50,411 INFO L168 Benchmark]: Toolchain (without parser) took 109872.43 ms. Allocated memory was 153.1 MB in the beginning and 615.5 MB in the end (delta: 462.4 MB). Free memory was 128.1 MB in the beginning and 566.2 MB in the end (delta: -438.1 MB). Peak memory consumption was 386.3 MB. Max. memory is 8.0 GB. [2020-10-23 20:21:50,411 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 153.1 MB. Free memory was 126.2 MB in the beginning and 126.2 MB in the end (delta: 73.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:21:50,412 INFO L168 Benchmark]: CACSL2BoogieTranslator took 613.39 ms. Allocated memory is still 153.1 MB. Free memory was 127.5 MB in the beginning and 106.3 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:21:50,412 INFO L168 Benchmark]: Boogie Preprocessor took 108.80 ms. Allocated memory is still 153.1 MB. Free memory was 106.3 MB in the beginning and 132.9 MB in the end (delta: -26.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 8.0 GB. [2020-10-23 20:21:50,413 INFO L168 Benchmark]: RCFGBuilder took 1437.52 ms. Allocated memory is still 153.1 MB. Free memory was 132.9 MB in the beginning and 83.1 MB in the end (delta: 49.8 MB). Peak memory consumption was 57.7 MB. Max. memory is 8.0 GB. [2020-10-23 20:21:50,413 INFO L168 Benchmark]: TraceAbstraction took 107696.32 ms. Allocated memory was 153.1 MB in the beginning and 615.5 MB in the end (delta: 462.4 MB). Free memory was 82.6 MB in the beginning and 566.2 MB in the end (delta: -483.7 MB). Peak memory consumption was 339.7 MB. Max. memory is 8.0 GB. [2020-10-23 20:21:50,415 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 153.1 MB. Free memory was 126.2 MB in the beginning and 126.2 MB in the end (delta: 73.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 613.39 ms. Allocated memory is still 153.1 MB. Free memory was 127.5 MB in the beginning and 106.3 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 108.80 ms. Allocated memory is still 153.1 MB. Free memory was 106.3 MB in the beginning and 132.9 MB in the end (delta: -26.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1437.52 ms. Allocated memory is still 153.1 MB. Free memory was 132.9 MB in the beginning and 83.1 MB in the end (delta: 49.8 MB). Peak memory consumption was 57.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 107696.32 ms. Allocated memory was 153.1 MB in the beginning and 615.5 MB in the end (delta: 462.4 MB). Free memory was 82.6 MB in the beginning and 566.2 MB in the end (delta: -483.7 MB). Peak memory consumption was 339.7 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: [L45] int switchedOnBeforeTS ; [L94] int cleanupTimeShifts = 4; [L412] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L613] int waterLevel = 1; [L614] int methaneLevelCritical = 0; [L777] int pumpRunning = 0; [L778] int systemActive = 1; [L176] int retValue_acc ; [L177] int tmp ; [L181] FCALL select_helpers() [L182] FCALL select_features() [L183] CALL, EXPR valid_product() [L234] int retValue_acc ; [L237] retValue_acc = 1 [L238] return (retValue_acc); [L183] RET, EXPR valid_product() [L183] tmp = valid_product() [L185] COND TRUE \read(tmp) [L187] FCALL setup() [L188] CALL runTest() [L166] CALL __utac_acc__Specification5_spec__1() [L50] switchedOnBeforeTS = 0 [L166] RET __utac_acc__Specification5_spec__1() [L167] CALL test() [L709] int splverifierCounter ; [L710] int tmp ; [L711] int tmp___0 ; [L712] int tmp___1 ; [L713] int tmp___2 ; [L716] splverifierCounter = 0 [L718] COND TRUE 1 [L720] COND TRUE splverifierCounter < 4 [L726] tmp = __VERIFIER_nondet_int() [L728] COND TRUE \read(tmp) [L730] CALL waterRise() [L631] COND TRUE waterLevel < 2 [L632] waterLevel = waterLevel + 1 [L730] RET waterRise() [L736] tmp___0 = __VERIFIER_nondet_int() [L738] COND FALSE !(\read(tmp___0)) [L746] tmp___2 = __VERIFIER_nondet_int() [L748] COND TRUE \read(tmp___2) [L750] CALL startSystem() [L953] systemActive = 1 [L750] RET startSystem() [L763] CALL timeShift() [L785] CALL __utac_acc__Specification5_spec__2() [L59] CALL, EXPR isPumpRunning() [L886] int retValue_acc ; [L889] retValue_acc = pumpRunning [L890] return (retValue_acc); [L59] RET, EXPR isPumpRunning() [L59] switchedOnBeforeTS = isPumpRunning() [L785] RET __utac_acc__Specification5_spec__2() [L787] COND FALSE !(\read(pumpRunning)) [L794] COND TRUE \read(systemActive) [L796] CALL processEnvironment() [L816] int tmp ; [L819] COND TRUE ! pumpRunning [L821] CALL, EXPR isHighWaterLevel() [L931] int retValue_acc ; [L932] int tmp ; [L933] int tmp___0 ; [L937] CALL, EXPR isHighWaterSensorDry() [L693] int retValue_acc ; [L696] COND FALSE !(waterLevel < 2) [L700] retValue_acc = 0 [L701] return (retValue_acc); [L937] RET, EXPR isHighWaterSensorDry() [L937] tmp = isHighWaterSensorDry() [L939] COND FALSE !(\read(tmp)) [L942] tmp___0 = 1 [L944] retValue_acc = tmp___0 [L945] return (retValue_acc); [L821] RET, EXPR isHighWaterLevel() [L821] tmp = isHighWaterLevel() [L823] COND TRUE \read(tmp) [L825] CALL activatePump() [L850] int tmp ; [L854] CALL, EXPR isMethaneAlarm() [L875] int retValue_acc ; [L879] CALL, EXPR isMethaneLevelCritical() [L652] int retValue_acc ; [L655] retValue_acc = methaneLevelCritical [L656] return (retValue_acc); [L879] RET, EXPR isMethaneLevelCritical() [L879] retValue_acc = isMethaneLevelCritical() [L881] return (retValue_acc); [L854] RET, EXPR isMethaneAlarm() [L854] tmp = isMethaneAlarm() [L856] COND FALSE !(\read(tmp)) [L860] CALL activatePump__wrappee__highWaterSensor() [L844] pumpRunning = 1 [L860] RET activatePump__wrappee__highWaterSensor() [L825] RET activatePump() [L796] RET processEnvironment() [L802] CALL __utac_acc__Specification5_spec__3() [L65] int tmp ; [L66] int tmp___0 ; [L70] CALL, EXPR getWaterLevel() [L684] int retValue_acc ; [L687] retValue_acc = waterLevel [L688] return (retValue_acc); [L70] RET, EXPR getWaterLevel() [L70] tmp = getWaterLevel() [L72] COND FALSE !(tmp != 2) [L802] RET __utac_acc__Specification5_spec__3() [L763] RET timeShift() [L718] COND TRUE 1 [L720] COND TRUE splverifierCounter < 4 [L726] tmp = __VERIFIER_nondet_int() [L728] COND FALSE !(\read(tmp)) [L736] tmp___0 = __VERIFIER_nondet_int() [L738] COND FALSE !(\read(tmp___0)) [L746] tmp___2 = __VERIFIER_nondet_int() [L748] COND TRUE \read(tmp___2) [L750] CALL startSystem() [L953] systemActive = 1 [L750] RET startSystem() [L763] CALL timeShift() [L785] CALL __utac_acc__Specification5_spec__2() [L59] CALL, EXPR isPumpRunning() [L886] int retValue_acc ; [L889] retValue_acc = pumpRunning [L890] return (retValue_acc); [L59] RET, EXPR isPumpRunning() [L59] switchedOnBeforeTS = isPumpRunning() [L785] RET __utac_acc__Specification5_spec__2() [L787] COND TRUE \read(pumpRunning) [L789] CALL lowerWaterLevel() [L619] COND TRUE waterLevel > 0 [L620] waterLevel = waterLevel - 1 [L789] RET lowerWaterLevel() [L794] COND TRUE \read(systemActive) [L796] CALL processEnvironment() [L816] int tmp ; [L819] COND FALSE !(! pumpRunning) [L834] FCALL processEnvironment__wrappee__base() [L796] RET processEnvironment() [L802] CALL __utac_acc__Specification5_spec__3() [L65] int tmp ; [L66] int tmp___0 ; [L70] CALL, EXPR getWaterLevel() [L684] int retValue_acc ; [L687] retValue_acc = waterLevel [L688] return (retValue_acc); [L70] RET, EXPR getWaterLevel() [L70] tmp = getWaterLevel() [L72] COND TRUE tmp != 2 [L74] CALL, EXPR isPumpRunning() [L886] int retValue_acc ; [L889] retValue_acc = pumpRunning [L890] return (retValue_acc); [L74] RET, EXPR isPumpRunning() [L74] tmp___0 = isPumpRunning() [L76] COND TRUE \read(tmp___0) [L77] COND TRUE ! switchedOnBeforeTS [L79] CALL __automaton_fail() [L203] CALL reach_error() [L3] __assert_fail("0", "minepump_spec5_product42.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 645 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 107.6s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 53.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2349 SDtfs, 6390 SDslu, 5667 SDs, 0 SdLazy, 10555 SolverSat, 1830 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 21.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 502 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1494 ImplicationChecksByTransitivity, 29.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=933occurred 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, 1446 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...