/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 23:44:44,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 23:44:44,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 23:44:44,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 23:44:44,270 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 23:44:44,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 23:44:44,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 23:44:44,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 23:44:44,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 23:44:44,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 23:44:44,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 23:44:44,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 23:44:44,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 23:44:44,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 23:44:44,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 23:44:44,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 23:44:44,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 23:44:44,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 23:44:44,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 23:44:44,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 23:44:44,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 23:44:44,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 23:44:44,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 23:44:44,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 23:44:44,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-06 23:44:44,321 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-06 23:44:44,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-06 23:44:44,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-06 23:44:44,327 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-06 23:44:44,328 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-06 23:44:44,328 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-06 23:44:44,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-06 23:44:44,331 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-06 23:44:44,332 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-06 23:44:44,333 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-06 23:44:44,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-06 23:44:44,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-06 23:44:44,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-06 23:44:44,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 23:44:44,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 23:44:44,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 23:44:44,338 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-06 23:44:44,357 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 23:44:44,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 23:44:44,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 23:44:44,362 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 23:44:44,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 23:44:44,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 23:44:44,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 23:44:44,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 23:44:44,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 23:44:44,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 23:44:44,364 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 23:44:44,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 23:44:44,365 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 23:44:44,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 23:44:44,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 23:44:44,365 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-06 23:44:44,365 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 23:44:44,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 23:44:44,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 23:44:44,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 23:44:44,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-06 23:44:44,366 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 23:44:44,367 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 23:44:44,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 23:44:44,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 23:44:44,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 23:44:44,780 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 23:44:44,780 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 23:44:44,781 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product35.cil.c [2020-11-06 23:44:44,859 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/119e1ad96/389d273d08ad40a98f5816ff38370426/FLAG54dfce956 [2020-11-06 23:44:45,593 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 23:44:45,594 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product35.cil.c [2020-11-06 23:44:45,610 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/119e1ad96/389d273d08ad40a98f5816ff38370426/FLAG54dfce956 [2020-11-06 23:44:45,818 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/119e1ad96/389d273d08ad40a98f5816ff38370426 [2020-11-06 23:44:45,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 23:44:45,830 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 23:44:45,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 23:44:45,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 23:44:45,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 23:44:45,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:44:45" (1/1) ... [2020-11-06 23:44:45,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ad0719d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:45, skipping insertion in model container [2020-11-06 23:44:45,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:44:45" (1/1) ... [2020-11-06 23:44:45,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 23:44:45,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 23:44:46,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 23:44:46,313 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 23:44:46,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 23:44:46,454 INFO L208 MainTranslator]: Completed translation [2020-11-06 23:44:46,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:46 WrapperNode [2020-11-06 23:44:46,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 23:44:46,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 23:44:46,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 23:44:46,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 23:44:46,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:46" (1/1) ... [2020-11-06 23:44:46,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:46" (1/1) ... [2020-11-06 23:44:46,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:46" (1/1) ... [2020-11-06 23:44:46,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:46" (1/1) ... [2020-11-06 23:44:46,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:46" (1/1) ... [2020-11-06 23:44:46,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:46" (1/1) ... [2020-11-06 23:44:46,608 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:46" (1/1) ... [2020-11-06 23:44:46,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 23:44:46,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 23:44:46,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 23:44:46,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 23:44:46,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:46" (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 [2020-11-06 23:44:46,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 23:44:46,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 23:44:46,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-11-06 23:44:46,738 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 23:44:46,738 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-11-06 23:44:46,738 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-11-06 23:44:46,739 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-11-06 23:44:46,739 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-11-06 23:44:46,739 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-11-06 23:44:46,739 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-11-06 23:44:46,739 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-11-06 23:44:46,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-11-06 23:44:46,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-11-06 23:44:46,740 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-11-06 23:44:46,740 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-11-06 23:44:46,740 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-11-06 23:44:46,740 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-11-06 23:44:46,741 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-11-06 23:44:46,741 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-11-06 23:44:46,741 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-11-06 23:44:46,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-11-06 23:44:46,742 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-11-06 23:44:46,744 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-11-06 23:44:46,744 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-11-06 23:44:46,744 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-11-06 23:44:46,745 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-11-06 23:44:46,745 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-11-06 23:44:46,745 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-11-06 23:44:46,745 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-11-06 23:44:46,745 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-11-06 23:44:46,745 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-11-06 23:44:46,745 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-11-06 23:44:46,746 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 23:44:46,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-11-06 23:44:46,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-11-06 23:44:46,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-11-06 23:44:46,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-11-06 23:44:46,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-11-06 23:44:46,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-11-06 23:44:46,747 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 23:44:46,747 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 23:44:46,747 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 23:44:46,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 23:44:46,747 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 23:44:46,748 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-11-06 23:44:46,748 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-11-06 23:44:46,748 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-11-06 23:44:46,748 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-11-06 23:44:46,748 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-11-06 23:44:46,748 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-11-06 23:44:46,748 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-11-06 23:44:46,748 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-11-06 23:44:46,749 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-11-06 23:44:46,749 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-11-06 23:44:46,749 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-11-06 23:44:46,749 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-11-06 23:44:46,749 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-11-06 23:44:46,749 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-11-06 23:44:46,749 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-11-06 23:44:46,750 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-11-06 23:44:46,750 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-11-06 23:44:46,750 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-11-06 23:44:46,750 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-11-06 23:44:46,750 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-11-06 23:44:46,750 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-11-06 23:44:46,750 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-11-06 23:44:46,751 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-11-06 23:44:46,751 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-11-06 23:44:46,751 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-11-06 23:44:46,751 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-11-06 23:44:46,751 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-11-06 23:44:46,752 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-11-06 23:44:46,752 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-11-06 23:44:46,752 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 23:44:46,752 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-06 23:44:46,753 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-06 23:44:46,753 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-11-06 23:44:46,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-06 23:44:46,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-06 23:44:46,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 23:44:46,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-06 23:44:46,754 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-11-06 23:44:46,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 23:44:46,754 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-11-06 23:44:46,755 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-11-06 23:44:46,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 23:44:46,756 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-11-06 23:44:46,756 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-11-06 23:44:46,756 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-11-06 23:44:46,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 23:44:46,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 23:44:46,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 23:44:48,049 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 23:44:48,050 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-06 23:44:48,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:44:48 BoogieIcfgContainer [2020-11-06 23:44:48,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 23:44:48,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 23:44:48,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 23:44:48,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 23:44:48,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:44:45" (1/3) ... [2020-11-06 23:44:48,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592df9ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:44:48, skipping insertion in model container [2020-11-06 23:44:48,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:46" (2/3) ... [2020-11-06 23:44:48,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592df9ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:44:48, skipping insertion in model container [2020-11-06 23:44:48,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:44:48" (3/3) ... [2020-11-06 23:44:48,064 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product35.cil.c [2020-11-06 23:44:48,082 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-06 23:44:48,089 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-11-06 23:44:48,117 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-06 23:44:48,170 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 23:44:48,170 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 23:44:48,170 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-06 23:44:48,170 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 23:44:48,170 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 23:44:48,170 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 23:44:48,171 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 23:44:48,171 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 23:44:48,211 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states. [2020-11-06 23:44:48,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-11-06 23:44:48,233 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:44:48,235 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:44:48,235 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]=== [2020-11-06 23:44:48,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:44:48,242 INFO L82 PathProgramCache]: Analyzing trace with hash 781800194, now seen corresponding path program 1 times [2020-11-06 23:44:48,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:44:48,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519881812] [2020-11-06 23:44:48,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:44:48,356 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:44:48,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:49,210 WARN L194 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:44:49,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:44:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:49,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:44:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:49,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:44:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:49,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:44:49,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:49,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:44:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:49,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:44:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:49,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-11-06 23:44:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:49,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:44:49,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519881812] [2020-11-06 23:44:49,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:44:49,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 23:44:49,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139059887] [2020-11-06 23:44:49,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 23:44:49,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:44:49,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 23:44:49,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 23:44:49,422 INFO L87 Difference]: Start difference. First operand 302 states. Second operand 3 states. [2020-11-06 23:44:51,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:44:51,258 INFO L93 Difference]: Finished difference Result 449 states and 535 transitions. [2020-11-06 23:44:51,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 23:44:51,261 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-11-06 23:44:51,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:44:51,277 INFO L225 Difference]: With dead ends: 449 [2020-11-06 23:44:51,277 INFO L226 Difference]: Without dead ends: 283 [2020-11-06 23:44:51,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 23:44:51,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-11-06 23:44:51,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 242. [2020-11-06 23:44:51,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-11-06 23:44:51,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 261 transitions. [2020-11-06 23:44:51,432 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 261 transitions. Word has length 148 [2020-11-06 23:44:51,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:44:51,433 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 261 transitions. [2020-11-06 23:44:51,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 23:44:51,433 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 261 transitions. [2020-11-06 23:44:51,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-11-06 23:44:51,440 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:44:51,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:44:51,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 23:44:51,441 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]=== [2020-11-06 23:44:51,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:44:51,441 INFO L82 PathProgramCache]: Analyzing trace with hash 936300476, now seen corresponding path program 1 times [2020-11-06 23:44:51,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:44:51,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690542995] [2020-11-06 23:44:51,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:44:51,447 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:44:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:51,989 WARN L194 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:44:51,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:44:52,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:52,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:44:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:52,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:44:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:52,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:44:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:52,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:44:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:52,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-11-06 23:44:52,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:52,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-11-06 23:44:52,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:52,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:44:52,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690542995] [2020-11-06 23:44:52,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:44:52,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 23:44:52,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641016329] [2020-11-06 23:44:52,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 23:44:52,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:44:52,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 23:44:52,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 23:44:52,123 INFO L87 Difference]: Start difference. First operand 242 states and 261 transitions. Second operand 4 states. [2020-11-06 23:44:53,001 WARN L194 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:44:54,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:44:54,092 INFO L93 Difference]: Finished difference Result 354 states and 396 transitions. [2020-11-06 23:44:54,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-06 23:44:54,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-11-06 23:44:54,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:44:54,098 INFO L225 Difference]: With dead ends: 354 [2020-11-06 23:44:54,098 INFO L226 Difference]: Without dead ends: 266 [2020-11-06 23:44:54,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 23:44:54,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-11-06 23:44:54,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 232. [2020-11-06 23:44:54,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-11-06 23:44:54,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 248 transitions. [2020-11-06 23:44:54,198 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 248 transitions. Word has length 149 [2020-11-06 23:44:54,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:44:54,198 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 248 transitions. [2020-11-06 23:44:54,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 23:44:54,199 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 248 transitions. [2020-11-06 23:44:54,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-11-06 23:44:54,202 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:44:54,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:44:54,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 23:44:54,202 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]=== [2020-11-06 23:44:54,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:44:54,203 INFO L82 PathProgramCache]: Analyzing trace with hash -911159054, now seen corresponding path program 1 times [2020-11-06 23:44:54,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:44:54,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810017299] [2020-11-06 23:44:54,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:44:54,207 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:44:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:54,723 WARN L194 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:44:54,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:44:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:54,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:44:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:54,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:44:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:54,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:44:54,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:54,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:44:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:54,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-11-06 23:44:54,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:54,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-11-06 23:44:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:54,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:44:54,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810017299] [2020-11-06 23:44:54,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:44:54,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-06 23:44:54,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209184840] [2020-11-06 23:44:54,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-06 23:44:54,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:44:54,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-06 23:44:54,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-06 23:44:54,909 INFO L87 Difference]: Start difference. First operand 232 states and 248 transitions. Second operand 9 states. [2020-11-06 23:44:55,692 WARN L194 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:44:56,183 WARN L194 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:44:56,611 WARN L194 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:44:57,009 WARN L194 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:44:57,430 WARN L194 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:44:57,840 WARN L194 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:44:59,056 WARN L194 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:01,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:45:01,074 INFO L93 Difference]: Finished difference Result 594 states and 680 transitions. [2020-11-06 23:45:01,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-06 23:45:01,075 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 158 [2020-11-06 23:45:01,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:45:01,080 INFO L225 Difference]: With dead ends: 594 [2020-11-06 23:45:01,080 INFO L226 Difference]: Without dead ends: 477 [2020-11-06 23:45:01,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-11-06 23:45:01,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2020-11-06 23:45:01,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 400. [2020-11-06 23:45:01,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-11-06 23:45:01,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 442 transitions. [2020-11-06 23:45:01,261 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 442 transitions. Word has length 158 [2020-11-06 23:45:01,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:45:01,262 INFO L481 AbstractCegarLoop]: Abstraction has 400 states and 442 transitions. [2020-11-06 23:45:01,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-06 23:45:01,262 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 442 transitions. [2020-11-06 23:45:01,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-11-06 23:45:01,265 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:45:01,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:45:01,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 23:45:01,265 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]=== [2020-11-06 23:45:01,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:45:01,266 INFO L82 PathProgramCache]: Analyzing trace with hash -818785623, now seen corresponding path program 1 times [2020-11-06 23:45:01,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:45:01,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240415374] [2020-11-06 23:45:01,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:45:01,270 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:45:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:01,691 WARN L194 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:45:01,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:45:01,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:01,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:45:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:01,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:45:01,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:01,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:45:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:01,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:45:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:01,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-11-06 23:45:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:01,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:45:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:01,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-11-06 23:45:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:01,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-11-06 23:45:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:01,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:45:01,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240415374] [2020-11-06 23:45:01,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:45:01,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-06 23:45:01,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221812766] [2020-11-06 23:45:01,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-06 23:45:01,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:45:01,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-06 23:45:01,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-06 23:45:01,837 INFO L87 Difference]: Start difference. First operand 400 states and 442 transitions. Second operand 6 states. [2020-11-06 23:45:02,441 WARN L194 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:45:04,270 WARN L194 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:04,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:45:04,849 INFO L93 Difference]: Finished difference Result 993 states and 1166 transitions. [2020-11-06 23:45:04,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-06 23:45:04,850 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2020-11-06 23:45:04,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:45:04,859 INFO L225 Difference]: With dead ends: 993 [2020-11-06 23:45:04,860 INFO L226 Difference]: Without dead ends: 708 [2020-11-06 23:45:04,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-11-06 23:45:04,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-11-06 23:45:05,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 590. [2020-11-06 23:45:05,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-11-06 23:45:05,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 652 transitions. [2020-11-06 23:45:05,126 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 652 transitions. Word has length 166 [2020-11-06 23:45:05,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:45:05,127 INFO L481 AbstractCegarLoop]: Abstraction has 590 states and 652 transitions. [2020-11-06 23:45:05,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-06 23:45:05,127 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 652 transitions. [2020-11-06 23:45:05,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-11-06 23:45:05,130 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:45:05,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:45:05,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-06 23:45:05,130 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]=== [2020-11-06 23:45:05,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:45:05,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1386373475, now seen corresponding path program 1 times [2020-11-06 23:45:05,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:45:05,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244618274] [2020-11-06 23:45:05,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:45:05,134 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:45:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:05,607 WARN L194 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:45:05,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:45:05,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:05,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:45:05,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:05,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:45:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:05,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:45:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:05,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:45:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:05,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-11-06 23:45:05,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:05,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-11-06 23:45:05,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:05,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-11-06 23:45:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:05,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:45:05,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244618274] [2020-11-06 23:45:05,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:45:05,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-06 23:45:05,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682115524] [2020-11-06 23:45:05,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-06 23:45:05,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:45:05,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-06 23:45:05,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-06 23:45:05,750 INFO L87 Difference]: Start difference. First operand 590 states and 652 transitions. Second operand 9 states. [2020-11-06 23:45:06,416 WARN L194 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:45:07,741 WARN L194 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:08,123 WARN L194 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:45:08,522 WARN L194 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:08,914 WARN L194 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:45:09,277 WARN L194 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:45:09,633 WARN L194 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:09,994 WARN L194 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:10,536 WARN L194 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:12,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:45:12,111 INFO L93 Difference]: Finished difference Result 1584 states and 1843 transitions. [2020-11-06 23:45:12,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-06 23:45:12,112 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 167 [2020-11-06 23:45:12,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:45:12,121 INFO L225 Difference]: With dead ends: 1584 [2020-11-06 23:45:12,121 INFO L226 Difference]: Without dead ends: 1109 [2020-11-06 23:45:12,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-11-06 23:45:12,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2020-11-06 23:45:12,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 981. [2020-11-06 23:45:12,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 981 states. [2020-11-06 23:45:12,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1092 transitions. [2020-11-06 23:45:12,584 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1092 transitions. Word has length 167 [2020-11-06 23:45:12,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:45:12,585 INFO L481 AbstractCegarLoop]: Abstraction has 981 states and 1092 transitions. [2020-11-06 23:45:12,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-06 23:45:12,585 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1092 transitions. [2020-11-06 23:45:12,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-11-06 23:45:12,588 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:45:12,588 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:45:12,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-06 23:45:12,589 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]=== [2020-11-06 23:45:12,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:45:12,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1826038701, now seen corresponding path program 1 times [2020-11-06 23:45:12,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:45:12,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941853485] [2020-11-06 23:45:12,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:45:12,593 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:45:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:12,979 WARN L194 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:45:12,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:45:12,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:13,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:45:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:13,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:45:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:13,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:45:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:13,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:45:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:13,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:45:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:13,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-11-06 23:45:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:13,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-06 23:45:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:13,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-11-06 23:45:13,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:13,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:45:13,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941853485] [2020-11-06 23:45:13,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:45:13,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 23:45:13,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856960707] [2020-11-06 23:45:13,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 23:45:13,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:45:13,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 23:45:13,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-06 23:45:13,150 INFO L87 Difference]: Start difference. First operand 981 states and 1092 transitions. Second operand 10 states. [2020-11-06 23:45:13,799 WARN L194 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:45:15,426 WARN L194 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:15,904 WARN L194 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:45:16,381 WARN L194 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:16,730 WARN L194 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:45:17,083 WARN L194 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:17,773 WARN L194 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:45:18,153 WARN L194 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:18,633 WARN L194 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:19,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:45:19,699 INFO L93 Difference]: Finished difference Result 1242 states and 1456 transitions. [2020-11-06 23:45:19,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-06 23:45:19,699 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2020-11-06 23:45:19,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:45:19,708 INFO L225 Difference]: With dead ends: 1242 [2020-11-06 23:45:19,709 INFO L226 Difference]: Without dead ends: 1238 [2020-11-06 23:45:19,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-11-06 23:45:19,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2020-11-06 23:45:20,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 981. [2020-11-06 23:45:20,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 981 states. [2020-11-06 23:45:20,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1089 transitions. [2020-11-06 23:45:20,201 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1089 transitions. Word has length 172 [2020-11-06 23:45:20,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:45:20,202 INFO L481 AbstractCegarLoop]: Abstraction has 981 states and 1089 transitions. [2020-11-06 23:45:20,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 23:45:20,202 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1089 transitions. [2020-11-06 23:45:20,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-11-06 23:45:20,206 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:45:20,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:45:20,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-06 23:45:20,207 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]=== [2020-11-06 23:45:20,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:45:20,208 INFO L82 PathProgramCache]: Analyzing trace with hash 79865007, now seen corresponding path program 1 times [2020-11-06 23:45:20,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:45:20,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335199108] [2020-11-06 23:45:20,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:45:20,211 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:45:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:20,584 WARN L194 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:45:20,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:45:20,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:20,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:45:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:20,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:45:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:20,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:45:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:20,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:45:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:20,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:45:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:20,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-11-06 23:45:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:20,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:45:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:20,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:45:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:20,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:45:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:20,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-11-06 23:45:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:20,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-11-06 23:45:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:20,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:45:20,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335199108] [2020-11-06 23:45:20,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:45:20,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 23:45:20,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117280772] [2020-11-06 23:45:20,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 23:45:20,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:45:20,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 23:45:20,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-06 23:45:20,812 INFO L87 Difference]: Start difference. First operand 981 states and 1089 transitions. Second operand 10 states. [2020-11-06 23:45:22,401 WARN L194 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:22,796 WARN L194 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:45:23,189 WARN L194 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-11-06 23:45:23,584 WARN L194 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:23,988 WARN L194 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:45:24,351 WARN L194 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:25,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:45:25,782 INFO L93 Difference]: Finished difference Result 2248 states and 2658 transitions. [2020-11-06 23:45:25,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-06 23:45:25,789 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 196 [2020-11-06 23:45:25,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:45:25,798 INFO L225 Difference]: With dead ends: 2248 [2020-11-06 23:45:25,799 INFO L226 Difference]: Without dead ends: 1382 [2020-11-06 23:45:25,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-11-06 23:45:25,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2020-11-06 23:45:26,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1013. [2020-11-06 23:45:26,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1013 states. [2020-11-06 23:45:26,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1121 transitions. [2020-11-06 23:45:26,309 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1121 transitions. Word has length 196 [2020-11-06 23:45:26,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:45:26,310 INFO L481 AbstractCegarLoop]: Abstraction has 1013 states and 1121 transitions. [2020-11-06 23:45:26,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 23:45:26,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1121 transitions. [2020-11-06 23:45:26,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-11-06 23:45:26,315 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:45:26,315 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:45:26,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-06 23:45:26,316 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]=== [2020-11-06 23:45:26,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:45:26,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1059928817, now seen corresponding path program 1 times [2020-11-06 23:45:26,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:45:26,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289361972] [2020-11-06 23:45:26,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:45:26,322 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:45:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:26,732 WARN L194 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:45:26,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:45:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:26,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:45:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:26,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:45:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:26,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:45:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:26,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:45:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:26,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:45:26,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:26,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-11-06 23:45:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:26,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:45:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:26,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:45:26,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:26,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:45:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:26,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-11-06 23:45:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:26,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-11-06 23:45:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:26,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:45:26,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289361972] [2020-11-06 23:45:26,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:45:26,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-11-06 23:45:26,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445767874] [2020-11-06 23:45:26,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-06 23:45:26,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:45:26,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-06 23:45:26,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-11-06 23:45:26,949 INFO L87 Difference]: Start difference. First operand 1013 states and 1121 transitions. Second operand 13 states. [2020-11-06 23:45:27,677 WARN L194 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:28,039 WARN L194 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:45:28,409 WARN L194 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:28,788 WARN L194 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:45:29,136 WARN L194 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:30,217 WARN L194 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:30,621 WARN L194 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:45:31,052 WARN L194 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:31,501 WARN L194 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:45:31,904 WARN L194 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:33,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:45:33,718 INFO L93 Difference]: Finished difference Result 2324 states and 2767 transitions. [2020-11-06 23:45:33,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-06 23:45:33,719 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 196 [2020-11-06 23:45:33,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:45:33,729 INFO L225 Difference]: With dead ends: 2324 [2020-11-06 23:45:33,730 INFO L226 Difference]: Without dead ends: 1426 [2020-11-06 23:45:33,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-11-06 23:45:33,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2020-11-06 23:45:34,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1037. [2020-11-06 23:45:34,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2020-11-06 23:45:34,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1145 transitions. [2020-11-06 23:45:34,181 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1145 transitions. Word has length 196 [2020-11-06 23:45:34,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:45:34,182 INFO L481 AbstractCegarLoop]: Abstraction has 1037 states and 1145 transitions. [2020-11-06 23:45:34,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-06 23:45:34,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1145 transitions. [2020-11-06 23:45:34,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-11-06 23:45:34,186 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:45:34,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:45:34,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-06 23:45:34,186 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]=== [2020-11-06 23:45:34,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:45:34,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1103915788, now seen corresponding path program 1 times [2020-11-06 23:45:34,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:45:34,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753300518] [2020-11-06 23:45:34,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:45:34,190 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:45:34,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:34,627 WARN L194 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:45:34,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:45:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:34,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:45:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:34,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:45:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:34,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:45:34,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:34,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:45:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:34,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:45:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:34,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-11-06 23:45:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:34,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:45:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:34,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:45:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:34,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:45:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:34,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-11-06 23:45:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:34,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-11-06 23:45:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:34,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:45:34,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753300518] [2020-11-06 23:45:34,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:45:34,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-06 23:45:34,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76357339] [2020-11-06 23:45:34,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-06 23:45:34,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:45:34,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-06 23:45:34,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-06 23:45:34,850 INFO L87 Difference]: Start difference. First operand 1037 states and 1145 transitions. Second operand 7 states. [2020-11-06 23:45:35,587 WARN L194 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:45:36,368 WARN L194 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:45:39,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:45:39,937 INFO L93 Difference]: Finished difference Result 3482 states and 4223 transitions. [2020-11-06 23:45:39,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-06 23:45:39,938 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 196 [2020-11-06 23:45:39,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:45:39,954 INFO L225 Difference]: With dead ends: 3482 [2020-11-06 23:45:39,955 INFO L226 Difference]: Without dead ends: 2560 [2020-11-06 23:45:39,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-11-06 23:45:39,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2020-11-06 23:45:41,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 2081. [2020-11-06 23:45:41,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2081 states. [2020-11-06 23:45:41,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2081 states to 2081 states and 2361 transitions. [2020-11-06 23:45:41,159 INFO L78 Accepts]: Start accepts. Automaton has 2081 states and 2361 transitions. Word has length 196 [2020-11-06 23:45:41,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:45:41,160 INFO L481 AbstractCegarLoop]: Abstraction has 2081 states and 2361 transitions. [2020-11-06 23:45:41,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-06 23:45:41,161 INFO L276 IsEmpty]: Start isEmpty. Operand 2081 states and 2361 transitions. [2020-11-06 23:45:41,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-11-06 23:45:41,169 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:45:41,170 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:45:41,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-06 23:45:41,170 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]=== [2020-11-06 23:45:41,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:45:41,171 INFO L82 PathProgramCache]: Analyzing trace with hash -867506473, now seen corresponding path program 1 times [2020-11-06 23:45:41,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:45:41,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126532797] [2020-11-06 23:45:41,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:45:41,181 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:45:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 23:45:41,278 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 23:45:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 23:45:41,366 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 23:45:41,594 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-06 23:45:41,594 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 23:45:41,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-06 23:45:41,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:45:41 BoogieIcfgContainer [2020-11-06 23:45:41,625 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 23:45:41,630 INFO L168 Benchmark]: Toolchain (without parser) took 55801.82 ms. Allocated memory was 152.0 MB in the beginning and 810.5 MB in the end (delta: 658.5 MB). Free memory was 126.9 MB in the beginning and 424.3 MB in the end (delta: -297.4 MB). Peak memory consumption was 361.6 MB. Max. memory is 8.0 GB. [2020-11-06 23:45:41,637 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 152.0 MB. Free memory is still 125.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 23:45:41,638 INFO L168 Benchmark]: CACSL2BoogieTranslator took 619.31 ms. Allocated memory is still 152.0 MB. Free memory was 126.3 MB in the beginning and 105.9 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-11-06 23:45:41,639 INFO L168 Benchmark]: Boogie Preprocessor took 161.40 ms. Allocated memory is still 152.0 MB. Free memory was 105.9 MB in the beginning and 102.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-11-06 23:45:41,639 INFO L168 Benchmark]: RCFGBuilder took 1432.11 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 102.0 MB in the beginning and 118.7 MB in the end (delta: -16.7 MB). Peak memory consumption was 26.0 MB. Max. memory is 8.0 GB. [2020-11-06 23:45:41,640 INFO L168 Benchmark]: TraceAbstraction took 53568.96 ms. Allocated memory was 182.5 MB in the beginning and 810.5 MB in the end (delta: 628.1 MB). Free memory was 118.1 MB in the beginning and 424.3 MB in the end (delta: -306.1 MB). Peak memory consumption was 322.0 MB. Max. memory is 8.0 GB. [2020-11-06 23:45:41,647 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 152.0 MB. Free memory is still 125.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 619.31 ms. Allocated memory is still 152.0 MB. Free memory was 126.3 MB in the beginning and 105.9 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 161.40 ms. Allocated memory is still 152.0 MB. Free memory was 105.9 MB in the beginning and 102.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1432.11 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 102.0 MB in the beginning and 118.7 MB in the end (delta: -16.7 MB). Peak memory consumption was 26.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 53568.96 ms. Allocated memory was 182.5 MB in the beginning and 810.5 MB in the end (delta: 628.1 MB). Free memory was 118.1 MB in the beginning and 424.3 MB in the end (delta: -306.1 MB). Peak memory consumption was 322.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L49] int waterLevel = 1; [L50] int methaneLevelCritical = 0; [L252] int pumpRunning = 0; [L253] int systemActive = 1; [L457] int cleanupTimeShifts = 4; [L722] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L530] int retValue_acc ; [L531] int tmp ; [L535] FCALL select_helpers() [L536] FCALL select_features() [L537] CALL, EXPR valid_product() [L448] int retValue_acc ; [L451] retValue_acc = 1 [L452] return (retValue_acc); [L537] RET, EXPR valid_product() [L537] tmp = valid_product() [L539] COND TRUE \read(tmp) [L541] FCALL setup() [L542] CALL runTest() [L524] CALL test() [L183] int splverifierCounter ; [L184] int tmp ; [L185] int tmp___0 ; [L186] int tmp___1 ; [L187] int tmp___2 ; [L190] splverifierCounter = 0 [L192] COND TRUE 1 [L194] COND TRUE splverifierCounter < 4 [L200] tmp = __VERIFIER_nondet_int() [L202] COND TRUE \read(tmp) [L204] CALL waterRise() [L67] COND TRUE waterLevel < 2 [L68] waterLevel = waterLevel + 1 [L204] RET waterRise() [L210] tmp___0 = __VERIFIER_nondet_int() [L212] COND TRUE \read(tmp___0) [L214] CALL changeMethaneLevel() [L79] COND FALSE !(\read(methaneLevelCritical)) [L82] methaneLevelCritical = 1 [L214] RET changeMethaneLevel() [L220] tmp___2 = __VERIFIER_nondet_int() [L222] COND TRUE \read(tmp___2) [L237] CALL timeShift() [L259] COND FALSE !(\read(pumpRunning)) [L266] COND TRUE \read(systemActive) [L268] CALL processEnvironment() [L288] int tmp ; [L291] COND TRUE ! pumpRunning [L293] CALL, EXPR isHighWaterLevel() [L385] int retValue_acc ; [L386] int tmp ; [L387] int tmp___0 ; [L391] CALL, EXPR isHighWaterSensorDry() [L129] int retValue_acc ; [L132] COND FALSE !(waterLevel < 2) [L136] retValue_acc = 0 [L137] return (retValue_acc); [L391] RET, EXPR isHighWaterSensorDry() [L391] tmp = isHighWaterSensorDry() [L393] COND FALSE !(\read(tmp)) [L396] tmp___0 = 1 [L398] retValue_acc = tmp___0 [L399] return (retValue_acc); [L293] RET, EXPR isHighWaterLevel() [L293] tmp = isHighWaterLevel() [L295] COND TRUE \read(tmp) [L297] CALL activatePump() [L316] pumpRunning = 1 [L297] RET activatePump() [L268] RET processEnvironment() [L274] CALL __utac_acc__Specification1_spec__1() [L154] int tmp ; [L155] int tmp___0 ; [L159] CALL, EXPR isMethaneLevelCritical() [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); [L159] RET, EXPR isMethaneLevelCritical() [L159] tmp = isMethaneLevelCritical() [L161] COND TRUE \read(tmp) [L163] CALL, EXPR isPumpRunning() [L340] int retValue_acc ; [L343] retValue_acc = pumpRunning [L344] return (retValue_acc); [L163] RET, EXPR isPumpRunning() [L163] tmp___0 = isPumpRunning() [L165] COND TRUE \read(tmp___0) [L167] CALL __automaton_fail() [L147] CALL reach_error() [L3] __assert_fail("0", "minepump_spec1_product35.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 625 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 53.4s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 42.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2076 SDtfs, 3803 SDslu, 4022 SDs, 0 SdLazy, 7434 SolverSat, 1171 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 322 GetRequests, 204 SyntacticMatches, 3 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 20.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2081occurred 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: 3.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 1892 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...