/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_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 19:47:11,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 19:47:11,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 19:47:11,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 19:47:11,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 19:47:11,535 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 19:47:11,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 19:47:11,547 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 19:47:11,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 19:47:11,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 19:47:11,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 19:47:11,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 19:47:11,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 19:47:11,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 19:47:11,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 19:47:11,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 19:47:11,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 19:47:11,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 19:47:11,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 19:47:11,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 19:47:11,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 19:47:11,594 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 19:47:11,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 19:47:11,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 19:47:11,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 19:47:11,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 19:47:11,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 19:47:11,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 19:47:11,612 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 19:47:11,613 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 19:47:11,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 19:47:11,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 19:47:11,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 19:47:11,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 19:47:11,621 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 19:47:11,621 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 19:47:11,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 19:47:11,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 19:47:11,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 19:47:11,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 19:47:11,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 19:47:11,628 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 19:47:11,652 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 19:47:11,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 19:47:11,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 19:47:11,656 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 19:47:11,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 19:47:11,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 19:47:11,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 19:47:11,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 19:47:11,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 19:47:11,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 19:47:11,659 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 19:47:11,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 19:47:11,659 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 19:47:11,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 19:47:11,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 19:47:11,660 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 19:47:11,660 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 19:47:11,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 19:47:11,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:47:11,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 19:47:11,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 19:47:11,662 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 19:47:11,662 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 19:47:12,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 19:47:12,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 19:47:12,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 19:47:12,122 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 19:47:12,123 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 19:47:12,124 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product37.cil.c [2020-10-23 19:47:12,207 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4c475596/99e8ddb4a58d4977ae4a23fbe361979f/FLAGfe12fe304 [2020-10-23 19:47:12,886 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 19:47:12,887 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product37.cil.c [2020-10-23 19:47:12,903 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4c475596/99e8ddb4a58d4977ae4a23fbe361979f/FLAGfe12fe304 [2020-10-23 19:47:13,197 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4c475596/99e8ddb4a58d4977ae4a23fbe361979f [2020-10-23 19:47:13,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 19:47:13,207 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 19:47:13,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 19:47:13,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 19:47:13,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 19:47:13,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:47:13" (1/1) ... [2020-10-23 19:47:13,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@450cf69c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:47:13, skipping insertion in model container [2020-10-23 19:47:13,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:47:13" (1/1) ... [2020-10-23 19:47:13,228 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 19:47:13,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 19:47:13,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:47:13,641 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 19:47:13,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:47:13,803 INFO L208 MainTranslator]: Completed translation [2020-10-23 19:47:13,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:47:13 WrapperNode [2020-10-23 19:47:13,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 19:47:13,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 19:47:13,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 19:47:13,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 19:47:13,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:47:13" (1/1) ... [2020-10-23 19:47:13,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:47:13" (1/1) ... [2020-10-23 19:47:13,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:47:13" (1/1) ... [2020-10-23 19:47:13,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:47:13" (1/1) ... [2020-10-23 19:47:13,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:47:13" (1/1) ... [2020-10-23 19:47:13,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:47:13" (1/1) ... [2020-10-23 19:47:13,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:47:13" (1/1) ... [2020-10-23 19:47:13,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 19:47:13,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 19:47:13,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 19:47:13,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 19:47:13,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:47:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:47:13,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 19:47:13,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 19:47:13,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 19:47:13,964 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 19:47:13,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 19:47:13,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 19:47:13,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 19:47:13,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 19:47:13,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 19:47:13,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 19:47:13,965 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 19:47:13,965 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 19:47:13,965 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 19:47:13,966 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 19:47:13,966 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 19:47:13,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-10-23 19:47:13,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 19:47:13,966 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 19:47:13,966 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 19:47:13,967 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 19:47:13,967 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 19:47:13,967 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 19:47:13,967 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 19:47:13,967 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 19:47:13,968 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 19:47:13,968 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 19:47:13,968 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 19:47:13,968 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 19:47:13,968 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 19:47:13,968 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 19:47:13,969 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 19:47:13,969 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 19:47:13,969 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 19:47:13,969 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 19:47:13,969 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 19:47:13,969 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 19:47:13,970 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 19:47:13,970 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 19:47:13,970 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 19:47:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 19:47:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 19:47:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 19:47:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 19:47:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 19:47:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 19:47:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 19:47:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 19:47:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 19:47:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 19:47:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 19:47:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 19:47:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 19:47:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 19:47:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 19:47:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 19:47:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 19:47:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 19:47:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 19:47:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 19:47:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 19:47:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 19:47:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 19:47:13,974 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 19:47:13,974 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 19:47:13,974 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 19:47:13,974 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 19:47:13,974 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 19:47:13,974 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 19:47:13,974 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 19:47:13,975 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 19:47:13,975 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 19:47:13,975 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 19:47:13,975 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 19:47:13,975 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 19:47:13,975 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 19:47:13,975 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 19:47:13,976 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-10-23 19:47:13,976 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 19:47:13,976 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 19:47:13,976 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 19:47:13,976 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 19:47:13,976 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 19:47:13,977 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 19:47:13,977 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 19:47:13,977 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 19:47:13,977 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 19:47:13,977 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 19:47:13,977 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 19:47:13,977 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 19:47:13,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 19:47:13,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 19:47:13,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 19:47:15,283 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 19:47:15,283 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 19:47:15,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:47:15 BoogieIcfgContainer [2020-10-23 19:47:15,286 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 19:47:15,288 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 19:47:15,288 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 19:47:15,292 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 19:47:15,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:47:13" (1/3) ... [2020-10-23 19:47:15,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cff5341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:47:15, skipping insertion in model container [2020-10-23 19:47:15,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:47:13" (2/3) ... [2020-10-23 19:47:15,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cff5341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:47:15, skipping insertion in model container [2020-10-23 19:47:15,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:47:15" (3/3) ... [2020-10-23 19:47:15,295 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product37.cil.c [2020-10-23 19:47:15,307 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 19:47:15,314 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 19:47:15,328 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 19:47:15,366 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 19:47:15,367 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 19:47:15,367 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 19:47:15,367 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 19:47:15,367 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 19:47:15,367 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 19:47:15,368 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 19:47:15,368 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 19:47:15,403 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states. [2020-10-23 19:47:15,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-23 19:47:15,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:47:15,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:47:15,445 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:47:15,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:47:15,462 INFO L82 PathProgramCache]: Analyzing trace with hash -66250541, now seen corresponding path program 1 times [2020-10-23 19:47:15,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:47:15,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738888183] [2020-10-23 19:47:15,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:47:15,553 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:47:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:16,357 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:47:16,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:47:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:16,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:47:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:16,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:47:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:16,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:47:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:16,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:47:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:16,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:47:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:16,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 19:47:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:16,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:47:16,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738888183] [2020-10-23 19:47:16,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:47:16,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 19:47:16,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691720996] [2020-10-23 19:47:16,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 19:47:16,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:47:16,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 19:47:16,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 19:47:16,592 INFO L87 Difference]: Start difference. First operand 310 states. Second operand 3 states. [2020-10-23 19:47:18,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:47:18,389 INFO L93 Difference]: Finished difference Result 477 states and 569 transitions. [2020-10-23 19:47:18,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 19:47:18,392 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-10-23 19:47:18,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:47:18,423 INFO L225 Difference]: With dead ends: 477 [2020-10-23 19:47:18,423 INFO L226 Difference]: Without dead ends: 297 [2020-10-23 19:47:18,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 19:47:18,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-23 19:47:18,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 256. [2020-10-23 19:47:18,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-23 19:47:18,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 278 transitions. [2020-10-23 19:47:18,674 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 278 transitions. Word has length 148 [2020-10-23 19:47:18,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:47:18,679 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 278 transitions. [2020-10-23 19:47:18,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 19:47:18,679 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 278 transitions. [2020-10-23 19:47:18,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-23 19:47:18,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:47:18,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:47:18,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 19:47:18,694 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:47:18,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:47:18,696 INFO L82 PathProgramCache]: Analyzing trace with hash -479543084, now seen corresponding path program 1 times [2020-10-23 19:47:18,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:47:18,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107650503] [2020-10-23 19:47:18,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:47:18,707 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:47:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:19,242 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:47:19,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:47:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:19,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:47:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:19,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:47:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:19,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:47:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:19,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:47:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:19,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 19:47:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:19,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 19:47:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:19,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:47:19,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107650503] [2020-10-23 19:47:19,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:47:19,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 19:47:19,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375626573] [2020-10-23 19:47:19,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 19:47:19,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:47:19,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 19:47:19,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:47:19,369 INFO L87 Difference]: Start difference. First operand 256 states and 278 transitions. Second operand 4 states. [2020-10-23 19:47:20,221 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:47:21,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:47:21,462 INFO L93 Difference]: Finished difference Result 391 states and 440 transitions. [2020-10-23 19:47:21,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 19:47:21,462 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-23 19:47:21,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:47:21,467 INFO L225 Difference]: With dead ends: 391 [2020-10-23 19:47:21,467 INFO L226 Difference]: Without dead ends: 280 [2020-10-23 19:47:21,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 19:47:21,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-10-23 19:47:21,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 246. [2020-10-23 19:47:21,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-10-23 19:47:21,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 265 transitions. [2020-10-23 19:47:21,564 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 265 transitions. Word has length 149 [2020-10-23 19:47:21,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:47:21,565 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 265 transitions. [2020-10-23 19:47:21,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 19:47:21,565 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 265 transitions. [2020-10-23 19:47:21,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-23 19:47:21,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:47:21,567 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] [2020-10-23 19:47:21,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 19:47:21,568 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:47:21,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:47:21,569 INFO L82 PathProgramCache]: Analyzing trace with hash -695224173, now seen corresponding path program 1 times [2020-10-23 19:47:21,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:47:21,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44144494] [2020-10-23 19:47:21,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:47:21,573 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:47:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:22,030 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:47:22,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:47:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:22,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:47:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:22,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:47:22,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:22,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:47:22,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:22,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:47:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:22,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 19:47:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:22,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-23 19:47:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:22,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:47:22,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44144494] [2020-10-23 19:47:22,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:47:22,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:47:22,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679406872] [2020-10-23 19:47:22,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:47:22,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:47:22,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:47:22,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:47:22,279 INFO L87 Difference]: Start difference. First operand 246 states and 265 transitions. Second operand 9 states. [2020-10-23 19:47:22,976 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:47:23,508 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:47:23,928 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:47:24,328 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:24,780 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:47:25,183 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:26,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:47:26,959 INFO L93 Difference]: Finished difference Result 411 states and 465 transitions. [2020-10-23 19:47:26,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 19:47:26,960 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 158 [2020-10-23 19:47:26,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:47:26,963 INFO L225 Difference]: With dead ends: 411 [2020-10-23 19:47:26,964 INFO L226 Difference]: Without dead ends: 280 [2020-10-23 19:47:26,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-23 19:47:26,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-10-23 19:47:27,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 246. [2020-10-23 19:47:27,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-10-23 19:47:27,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 264 transitions. [2020-10-23 19:47:27,059 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 264 transitions. Word has length 158 [2020-10-23 19:47:27,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:47:27,059 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 264 transitions. [2020-10-23 19:47:27,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:47:27,060 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 264 transitions. [2020-10-23 19:47:27,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-23 19:47:27,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:47:27,063 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] [2020-10-23 19:47:27,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 19:47:27,063 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:47:27,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:47:27,064 INFO L82 PathProgramCache]: Analyzing trace with hash -604121053, now seen corresponding path program 1 times [2020-10-23 19:47:27,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:47:27,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393443760] [2020-10-23 19:47:27,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:47:27,068 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:47:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:27,460 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:47:27,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:47:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:27,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:47:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:27,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:47:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:27,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:47:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:27,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:47:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:27,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-23 19:47:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:27,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:47:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:27,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:47:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:27,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-23 19:47:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:27,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-23 19:47:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:27,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:47:27,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393443760] [2020-10-23 19:47:27,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:47:27,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 19:47:27,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402396534] [2020-10-23 19:47:27,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 19:47:27,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:47:27,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 19:47:27,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-23 19:47:27,621 INFO L87 Difference]: Start difference. First operand 246 states and 264 transitions. Second operand 6 states. [2020-10-23 19:47:28,409 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:47:30,158 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:47:31,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:47:31,013 INFO L93 Difference]: Finished difference Result 544 states and 622 transitions. [2020-10-23 19:47:31,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 19:47:31,013 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2020-10-23 19:47:31,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:47:31,018 INFO L225 Difference]: With dead ends: 544 [2020-10-23 19:47:31,018 INFO L226 Difference]: Without dead ends: 413 [2020-10-23 19:47:31,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:47:31,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-10-23 19:47:31,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 352. [2020-10-23 19:47:31,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-10-23 19:47:31,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 379 transitions. [2020-10-23 19:47:31,161 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 379 transitions. Word has length 171 [2020-10-23 19:47:31,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:47:31,162 INFO L481 AbstractCegarLoop]: Abstraction has 352 states and 379 transitions. [2020-10-23 19:47:31,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 19:47:31,162 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 379 transitions. [2020-10-23 19:47:31,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-23 19:47:31,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:47:31,165 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] [2020-10-23 19:47:31,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 19:47:31,166 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:47:31,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:47:31,166 INFO L82 PathProgramCache]: Analyzing trace with hash -708516420, now seen corresponding path program 1 times [2020-10-23 19:47:31,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:47:31,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627180673] [2020-10-23 19:47:31,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:47:31,170 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:47:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:31,599 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:47:31,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:47:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:31,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:47:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:31,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:47:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:31,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:47:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:31,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:47:31,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:31,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-23 19:47:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:31,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:47:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:31,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:47:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:31,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:47:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:31,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:47:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:31,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-23 19:47:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:31,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-23 19:47:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:31,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:47:31,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627180673] [2020-10-23 19:47:31,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:47:31,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:47:31,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079639323] [2020-10-23 19:47:31,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:47:31,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:47:31,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:47:31,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:47:31,845 INFO L87 Difference]: Start difference. First operand 352 states and 379 transitions. Second operand 9 states. [2020-10-23 19:47:32,491 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:47:33,794 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:34,214 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:47:34,617 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:47:34,991 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:35,429 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:47:35,819 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:37,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:47:37,830 INFO L93 Difference]: Finished difference Result 843 states and 985 transitions. [2020-10-23 19:47:37,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-23 19:47:37,830 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 195 [2020-10-23 19:47:37,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:47:37,839 INFO L225 Difference]: With dead ends: 843 [2020-10-23 19:47:37,839 INFO L226 Difference]: Without dead ends: 606 [2020-10-23 19:47:37,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-23 19:47:37,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2020-10-23 19:47:38,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 528. [2020-10-23 19:47:38,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-10-23 19:47:38,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 582 transitions. [2020-10-23 19:47:38,056 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 582 transitions. Word has length 195 [2020-10-23 19:47:38,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:47:38,057 INFO L481 AbstractCegarLoop]: Abstraction has 528 states and 582 transitions. [2020-10-23 19:47:38,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:47:38,057 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 582 transitions. [2020-10-23 19:47:38,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-23 19:47:38,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:47:38,060 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] [2020-10-23 19:47:38,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 19:47:38,061 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:47:38,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:47:38,063 INFO L82 PathProgramCache]: Analyzing trace with hash 931777561, now seen corresponding path program 1 times [2020-10-23 19:47:38,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:47:38,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136273087] [2020-10-23 19:47:38,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:47:38,067 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:47:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:38,510 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:47:38,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:47:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:38,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:47:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:38,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:47:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:38,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:47:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:38,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:47:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:38,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-23 19:47:38,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:38,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:47:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:38,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:47:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:38,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:47:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:38,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:47:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:38,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-23 19:47:38,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:38,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-23 19:47:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:38,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:47:38,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136273087] [2020-10-23 19:47:38,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:47:38,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:47:38,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882242749] [2020-10-23 19:47:38,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:47:38,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:47:38,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:47:38,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:47:38,678 INFO L87 Difference]: Start difference. First operand 528 states and 582 transitions. Second operand 9 states. [2020-10-23 19:47:39,281 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:47:41,161 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:41,546 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:47:41,937 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:42,310 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:47:42,679 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:47:43,042 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:43,405 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:43,917 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:47:45,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:47:45,407 INFO L93 Difference]: Finished difference Result 1407 states and 1648 transitions. [2020-10-23 19:47:45,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 19:47:45,411 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 195 [2020-10-23 19:47:45,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:47:45,422 INFO L225 Difference]: With dead ends: 1407 [2020-10-23 19:47:45,422 INFO L226 Difference]: Without dead ends: 994 [2020-10-23 19:47:45,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-10-23 19:47:45,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2020-10-23 19:47:45,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 879. [2020-10-23 19:47:45,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 879 states. [2020-10-23 19:47:45,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 978 transitions. [2020-10-23 19:47:45,881 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 978 transitions. Word has length 195 [2020-10-23 19:47:45,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:47:45,882 INFO L481 AbstractCegarLoop]: Abstraction has 879 states and 978 transitions. [2020-10-23 19:47:45,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:47:45,882 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 978 transitions. [2020-10-23 19:47:45,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-23 19:47:45,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:47:45,887 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] [2020-10-23 19:47:45,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 19:47:45,887 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:47:45,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:47:45,888 INFO L82 PathProgramCache]: Analyzing trace with hash -616231985, now seen corresponding path program 1 times [2020-10-23 19:47:45,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:47:45,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153378950] [2020-10-23 19:47:45,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:47:45,891 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:47:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:46,303 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:47:46,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:47:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:46,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:47:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:46,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:47:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:46,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:47:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:46,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:47:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:46,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:47:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:46,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:47:46,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:46,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:47:46,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:46,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:47:46,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:46,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:47:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:46,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:47:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:46,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-23 19:47:46,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:46,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-23 19:47:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:46,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:47:46,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153378950] [2020-10-23 19:47:46,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:47:46,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:47:46,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929043294] [2020-10-23 19:47:46,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:47:46,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:47:46,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:47:46,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:47:46,564 INFO L87 Difference]: Start difference. First operand 879 states and 978 transitions. Second operand 10 states. [2020-10-23 19:47:47,225 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:47:49,033 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:49,417 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:47:49,802 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:47:50,170 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:50,555 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:50,981 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:47:51,353 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:51,749 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:47:53,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:47:53,200 INFO L93 Difference]: Finished difference Result 1103 states and 1295 transitions. [2020-10-23 19:47:53,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 19:47:53,201 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 200 [2020-10-23 19:47:53,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:47:53,208 INFO L225 Difference]: With dead ends: 1103 [2020-10-23 19:47:53,208 INFO L226 Difference]: Without dead ends: 1099 [2020-10-23 19:47:53,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-23 19:47:53,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2020-10-23 19:47:53,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 879. [2020-10-23 19:47:53,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 879 states. [2020-10-23 19:47:53,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 976 transitions. [2020-10-23 19:47:53,619 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 976 transitions. Word has length 200 [2020-10-23 19:47:53,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:47:53,619 INFO L481 AbstractCegarLoop]: Abstraction has 879 states and 976 transitions. [2020-10-23 19:47:53,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:47:53,619 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 976 transitions. [2020-10-23 19:47:53,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-23 19:47:53,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:47:53,623 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] [2020-10-23 19:47:53,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 19:47:53,623 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:47:53,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:47:53,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1691615419, now seen corresponding path program 1 times [2020-10-23 19:47:53,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:47:53,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113304102] [2020-10-23 19:47:53,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:47:53,627 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:47:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:54,008 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:47:54,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:47:54,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:54,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:47:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:54,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:47:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:54,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:47:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:54,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:47:54,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:54,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:47:54,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:54,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:47:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:54,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:47:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:54,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:47:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:54,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:47:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:54,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:47:54,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:54,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-23 19:47:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:54,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-23 19:47:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:54,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:47:54,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113304102] [2020-10-23 19:47:54,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:47:54,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:47:54,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796958716] [2020-10-23 19:47:54,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:47:54,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:47:54,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:47:54,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:47:54,206 INFO L87 Difference]: Start difference. First operand 879 states and 976 transitions. Second operand 10 states. [2020-10-23 19:47:55,688 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:56,078 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:47:56,478 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:47:56,874 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:47:57,263 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:47:57,619 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:47:59,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:47:59,215 INFO L93 Difference]: Finished difference Result 1885 states and 2201 transitions. [2020-10-23 19:47:59,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 19:47:59,216 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 201 [2020-10-23 19:47:59,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:47:59,224 INFO L225 Difference]: With dead ends: 1885 [2020-10-23 19:47:59,225 INFO L226 Difference]: Without dead ends: 1121 [2020-10-23 19:47:59,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-23 19:47:59,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2020-10-23 19:47:59,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 911. [2020-10-23 19:47:59,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 911 states. [2020-10-23 19:47:59,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1008 transitions. [2020-10-23 19:47:59,729 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1008 transitions. Word has length 201 [2020-10-23 19:47:59,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:47:59,729 INFO L481 AbstractCegarLoop]: Abstraction has 911 states and 1008 transitions. [2020-10-23 19:47:59,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:47:59,730 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1008 transitions. [2020-10-23 19:47:59,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-23 19:47:59,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:47:59,734 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] [2020-10-23 19:47:59,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 19:47:59,737 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:47:59,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:47:59,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1566411035, now seen corresponding path program 1 times [2020-10-23 19:47:59,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:47:59,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618787011] [2020-10-23 19:47:59,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:47:59,741 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:47:59,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:00,094 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:00,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:00,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:00,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:00,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:00,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:00,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:00,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:48:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:00,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:48:00,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:00,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:00,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:00,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:00,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:00,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:48:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:00,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:48:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:00,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-23 19:48:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:00,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-23 19:48:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:00,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:48:00,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618787011] [2020-10-23 19:48:00,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:00,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-23 19:48:00,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597908262] [2020-10-23 19:48:00,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 19:48:00,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:00,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 19:48:00,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-23 19:48:00,348 INFO L87 Difference]: Start difference. First operand 911 states and 1008 transitions. Second operand 13 states. [2020-10-23 19:48:01,139 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:01,540 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:48:01,930 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:02,291 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:48:02,666 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:03,714 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:04,093 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:48:04,479 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:04,887 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:48:05,249 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:06,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:06,968 INFO L93 Difference]: Finished difference Result 1697 states and 1963 transitions. [2020-10-23 19:48:06,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 19:48:06,968 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 201 [2020-10-23 19:48:06,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:06,974 INFO L225 Difference]: With dead ends: 1697 [2020-10-23 19:48:06,974 INFO L226 Difference]: Without dead ends: 901 [2020-10-23 19:48:06,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-10-23 19:48:06,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2020-10-23 19:48:07,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 757. [2020-10-23 19:48:07,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 757 states. [2020-10-23 19:48:07,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 816 transitions. [2020-10-23 19:48:07,296 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 816 transitions. Word has length 201 [2020-10-23 19:48:07,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:07,297 INFO L481 AbstractCegarLoop]: Abstraction has 757 states and 816 transitions. [2020-10-23 19:48:07,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 19:48:07,297 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 816 transitions. [2020-10-23 19:48:07,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-23 19:48:07,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:07,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:48:07,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 19:48:07,300 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:48:07,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:07,301 INFO L82 PathProgramCache]: Analyzing trace with hash -980658218, now seen corresponding path program 1 times [2020-10-23 19:48:07,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:07,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070921514] [2020-10-23 19:48:07,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:07,304 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:48:07,377 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:48:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:48:07,443 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:48:07,722 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 19:48:07,722 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 19:48:07,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 19:48:07,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 07:48:07 BoogieIcfgContainer [2020-10-23 19:48:07,767 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 19:48:07,774 INFO L168 Benchmark]: Toolchain (without parser) took 54565.87 ms. Allocated memory was 151.0 MB in the beginning and 653.3 MB in the end (delta: 502.3 MB). Free memory was 127.5 MB in the beginning and 586.2 MB in the end (delta: -458.7 MB). Peak memory consumption was 395.1 MB. Max. memory is 8.0 GB. [2020-10-23 19:48:07,775 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 125.8 MB. Free memory is still 111.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 19:48:07,776 INFO L168 Benchmark]: CACSL2BoogieTranslator took 593.79 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 133.6 MB in the end (delta: -6.7 MB). Peak memory consumption was 25.8 MB. Max. memory is 8.0 GB. [2020-10-23 19:48:07,777 INFO L168 Benchmark]: Boogie Preprocessor took 86.42 ms. Allocated memory is still 151.0 MB. Free memory was 133.6 MB in the beginning and 129.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-23 19:48:07,778 INFO L168 Benchmark]: RCFGBuilder took 1394.26 ms. Allocated memory is still 151.0 MB. Free memory was 129.4 MB in the beginning and 110.2 MB in the end (delta: 19.3 MB). Peak memory consumption was 47.0 MB. Max. memory is 8.0 GB. [2020-10-23 19:48:07,782 INFO L168 Benchmark]: TraceAbstraction took 52478.50 ms. Allocated memory was 151.0 MB in the beginning and 653.3 MB in the end (delta: 502.3 MB). Free memory was 109.6 MB in the beginning and 586.2 MB in the end (delta: -476.5 MB). Peak memory consumption was 376.8 MB. Max. memory is 8.0 GB. [2020-10-23 19:48:07,790 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 125.8 MB. Free memory is still 111.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 593.79 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 133.6 MB in the end (delta: -6.7 MB). Peak memory consumption was 25.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 86.42 ms. Allocated memory is still 151.0 MB. Free memory was 133.6 MB in the beginning and 129.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1394.26 ms. Allocated memory is still 151.0 MB. Free memory was 129.4 MB in the beginning and 110.2 MB in the end (delta: 19.3 MB). Peak memory consumption was 47.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 52478.50 ms. Allocated memory was 151.0 MB in the beginning and 653.3 MB in the end (delta: 502.3 MB). Free memory was 109.6 MB in the beginning and 586.2 MB in the end (delta: -476.5 MB). Peak memory consumption was 376.8 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: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L408] int cleanupTimeShifts = 4; [L590] int pumpRunning = 0; [L591] int systemActive = 1; [L834] int waterLevel = 1; [L835] int methaneLevelCritical = 0; [L489] int retValue_acc ; [L490] int tmp ; [L494] FCALL select_helpers() [L495] FCALL select_features() [L496] CALL, EXPR valid_product() [L576] int retValue_acc ; [L579] retValue_acc = 1 [L580] return (retValue_acc); [L496] RET, EXPR valid_product() [L496] tmp = valid_product() [L498] COND TRUE \read(tmp) [L500] FCALL setup() [L501] CALL runTest() [L480] CALL test() [L769] int splverifierCounter ; [L770] int tmp ; [L771] int tmp___0 ; [L772] int tmp___1 ; [L773] int tmp___2 ; [L776] splverifierCounter = 0 [L778] COND TRUE 1 [L780] COND TRUE splverifierCounter < 4 [L786] tmp = __VERIFIER_nondet_int() [L788] COND TRUE \read(tmp) [L790] CALL waterRise() [L852] COND TRUE waterLevel < 2 [L853] waterLevel = waterLevel + 1 [L790] RET waterRise() [L796] tmp___0 = __VERIFIER_nondet_int() [L798] COND TRUE \read(tmp___0) [L800] CALL changeMethaneLevel() [L864] COND FALSE !(\read(methaneLevelCritical)) [L867] methaneLevelCritical = 1 [L800] RET changeMethaneLevel() [L806] tmp___2 = __VERIFIER_nondet_int() [L808] COND TRUE \read(tmp___2) [L821] CALL timeShift() [L597] COND FALSE !(\read(pumpRunning)) [L604] COND TRUE \read(systemActive) [L606] CALL processEnvironment() [L652] int tmp ; [L655] COND FALSE !(\read(pumpRunning)) [L670] CALL processEnvironment__wrappee__highWaterSensor() [L626] int tmp ; [L629] COND TRUE ! pumpRunning [L631] CALL, EXPR isHighWaterLevel() [L749] int retValue_acc ; [L750] int tmp ; [L751] int tmp___0 ; [L755] CALL, EXPR isHighWaterSensorDry() [L914] int retValue_acc ; [L917] COND FALSE !(waterLevel < 2) [L921] retValue_acc = 0 [L922] return (retValue_acc); [L755] RET, EXPR isHighWaterSensorDry() [L755] tmp = isHighWaterSensorDry() [L757] COND FALSE !(\read(tmp)) [L760] tmp___0 = 1 [L762] retValue_acc = tmp___0 [L763] return (retValue_acc); [L631] RET, EXPR isHighWaterLevel() [L631] tmp = isHighWaterLevel() [L633] COND TRUE \read(tmp) [L635] CALL activatePump() [L680] pumpRunning = 1 [L635] RET activatePump() [L670] RET processEnvironment__wrappee__highWaterSensor() [L606] RET processEnvironment() [L612] CALL __utac_acc__Specification1_spec__1() [L516] int tmp ; [L517] int tmp___0 ; [L521] CALL, EXPR isMethaneLevelCritical() [L873] int retValue_acc ; [L876] retValue_acc = methaneLevelCritical [L877] return (retValue_acc); [L521] RET, EXPR isMethaneLevelCritical() [L521] tmp = isMethaneLevelCritical() [L523] COND TRUE \read(tmp) [L525] CALL, EXPR isPumpRunning() [L704] int retValue_acc ; [L707] retValue_acc = pumpRunning [L708] return (retValue_acc); [L525] RET, EXPR isPumpRunning() [L525] tmp___0 = isPumpRunning() [L527] COND TRUE \read(tmp___0) [L529] CALL __automaton_fail() [L545] CALL reach_error() [L3] __assert_fail("0", "minepump_spec1_product37.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 631 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 52.3s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 43.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2123 SDtfs, 3315 SDslu, 4345 SDs, 0 SdLazy, 8037 SolverSat, 964 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 344 GetRequests, 227 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 21.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=911occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 937 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...