/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_spec2_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 19:54:22,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 19:54:22,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 19:54:22,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 19:54:22,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 19:54:22,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 19:54:22,850 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 19:54:22,852 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 19:54:22,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 19:54:22,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 19:54:22,864 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 19:54:22,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 19:54:22,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 19:54:22,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 19:54:22,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 19:54:22,870 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 19:54:22,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 19:54:22,872 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 19:54:22,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 19:54:22,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 19:54:22,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 19:54:22,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 19:54:22,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 19:54:22,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 19:54:22,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 19:54:22,901 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 19:54:22,902 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 19:54:22,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 19:54:22,907 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 19:54:22,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 19:54:22,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 19:54:22,912 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 19:54:22,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 19:54:22,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 19:54:22,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 19:54:22,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 19:54:22,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 19:54:22,918 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 19:54:22,919 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 19:54:22,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 19:54:22,921 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 19:54:22,923 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 19:54:22,946 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 19:54:22,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 19:54:22,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 19:54:22,952 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 19:54:22,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 19:54:22,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 19:54:22,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 19:54:22,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 19:54:22,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 19:54:22,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 19:54:22,955 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 19:54:22,955 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 19:54:22,955 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 19:54:22,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 19:54:22,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 19:54:22,956 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 19:54:22,956 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 19:54:22,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 19:54:22,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:54:22,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 19:54:22,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 19:54:22,958 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 19:54:22,958 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 19:54:23,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 19:54:23,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 19:54:23,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 19:54:23,454 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 19:54:23,455 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 19:54:23,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product54.cil.c [2020-10-23 19:54:23,540 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/448703b87/7fe65c97c2b64e0c885bacac53192486/FLAG2d744ff68 [2020-10-23 19:54:24,197 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 19:54:24,198 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product54.cil.c [2020-10-23 19:54:24,229 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/448703b87/7fe65c97c2b64e0c885bacac53192486/FLAG2d744ff68 [2020-10-23 19:54:24,478 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/448703b87/7fe65c97c2b64e0c885bacac53192486 [2020-10-23 19:54:24,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 19:54:24,489 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 19:54:24,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 19:54:24,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 19:54:24,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 19:54:24,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:54:24" (1/1) ... [2020-10-23 19:54:24,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ea51ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:24, skipping insertion in model container [2020-10-23 19:54:24,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:54:24" (1/1) ... [2020-10-23 19:54:24,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 19:54:24,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 19:54:25,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:54:25,051 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 19:54:25,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:54:25,230 INFO L208 MainTranslator]: Completed translation [2020-10-23 19:54:25,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:25 WrapperNode [2020-10-23 19:54:25,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 19:54:25,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 19:54:25,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 19:54:25,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 19:54:25,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:25" (1/1) ... [2020-10-23 19:54:25,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:25" (1/1) ... [2020-10-23 19:54:25,287 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:25" (1/1) ... [2020-10-23 19:54:25,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:25" (1/1) ... [2020-10-23 19:54:25,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:25" (1/1) ... [2020-10-23 19:54:25,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:25" (1/1) ... [2020-10-23 19:54:25,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:25" (1/1) ... [2020-10-23 19:54:25,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 19:54:25,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 19:54:25,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 19:54:25,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 19:54:25,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:25" (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 19:54:25,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 19:54:25,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 19:54:25,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 19:54:25,485 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 19:54:25,485 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 19:54:25,486 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 19:54:25,486 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 19:54:25,486 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 19:54:25,486 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 19:54:25,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-10-23 19:54:25,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-10-23 19:54:25,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 19:54:25,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 19:54:25,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 19:54:25,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 19:54:25,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 19:54:25,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 19:54:25,489 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 19:54:25,489 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 19:54:25,489 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 19:54:25,490 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 19:54:25,491 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-10-23 19:54:25,494 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 19:54:25,494 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 19:54:25,495 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 19:54:25,495 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 19:54:25,495 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 19:54:25,496 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 19:54:25,496 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 19:54:25,496 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-10-23 19:54:25,496 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-10-23 19:54:25,497 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 19:54:25,498 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 19:54:25,498 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 19:54:25,502 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 19:54:25,503 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 19:54:25,503 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 19:54:25,503 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 19:54:25,503 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-10-23 19:54:25,503 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 19:54:25,504 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 19:54:25,505 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 19:54:25,505 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 19:54:25,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 19:54:25,505 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 19:54:25,505 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 19:54:25,506 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 19:54:25,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 19:54:25,506 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 19:54:25,506 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 19:54:25,506 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 19:54:25,506 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 19:54:25,507 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 19:54:25,507 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 19:54:25,507 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 19:54:25,507 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 19:54:25,507 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 19:54:25,507 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-10-23 19:54:25,508 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 19:54:25,508 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 19:54:25,508 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 19:54:25,508 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 19:54:25,508 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 19:54:25,508 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 19:54:25,509 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 19:54:25,509 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 19:54:25,509 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 19:54:25,509 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-10-23 19:54:25,509 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 19:54:25,509 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 19:54:25,510 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 19:54:25,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 19:54:25,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 19:54:25,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 19:54:25,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 19:54:25,511 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 19:54:25,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 19:54:25,512 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 19:54:25,512 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 19:54:25,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 19:54:25,513 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 19:54:25,513 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 19:54:25,513 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 19:54:25,514 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-10-23 19:54:25,514 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 19:54:25,515 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 19:54:25,516 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 19:54:25,517 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-10-23 19:54:25,517 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 19:54:25,517 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 19:54:25,517 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 19:54:25,517 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 19:54:25,518 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 19:54:25,518 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 19:54:25,519 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-10-23 19:54:25,519 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-10-23 19:54:25,519 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 19:54:25,519 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 19:54:25,520 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 19:54:25,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 19:54:25,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 19:54:25,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 19:54:26,779 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 19:54:26,779 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 19:54:26,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:54:26 BoogieIcfgContainer [2020-10-23 19:54:26,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 19:54:26,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 19:54:26,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 19:54:26,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 19:54:26,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:54:24" (1/3) ... [2020-10-23 19:54:26,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d18868b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:54:26, skipping insertion in model container [2020-10-23 19:54:26,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:25" (2/3) ... [2020-10-23 19:54:26,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d18868b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:54:26, skipping insertion in model container [2020-10-23 19:54:26,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:54:26" (3/3) ... [2020-10-23 19:54:26,792 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product54.cil.c [2020-10-23 19:54:26,805 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 19:54:26,811 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 19:54:26,826 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 19:54:26,851 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 19:54:26,851 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 19:54:26,852 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 19:54:26,852 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 19:54:26,852 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 19:54:26,852 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 19:54:26,852 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 19:54:26,852 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 19:54:26,877 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states. [2020-10-23 19:54:26,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-23 19:54:26,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:54:26,899 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] [2020-10-23 19:54:26,900 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 19:54:26,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:54:26,907 INFO L82 PathProgramCache]: Analyzing trace with hash -620285636, now seen corresponding path program 1 times [2020-10-23 19:54:26,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:54:26,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789731829] [2020-10-23 19:54:26,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:54:26,996 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:54:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,729 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:54:27,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:54:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:54:27,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:54:27,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:54:27,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:54:27,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:54:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:54:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 19:54:27,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:27,929 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 19:54:27,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789731829] [2020-10-23 19:54:27,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:54:27,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 19:54:27,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836052711] [2020-10-23 19:54:27,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 19:54:27,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:54:27,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 19:54:27,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:54:27,956 INFO L87 Difference]: Start difference. First operand 354 states. Second operand 4 states. [2020-10-23 19:54:29,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:54:29,930 INFO L93 Difference]: Finished difference Result 564 states and 667 transitions. [2020-10-23 19:54:29,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 19:54:29,932 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-10-23 19:54:29,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:54:29,954 INFO L225 Difference]: With dead ends: 564 [2020-10-23 19:54:29,955 INFO L226 Difference]: Without dead ends: 351 [2020-10-23 19:54:29,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:54:29,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-10-23 19:54:30,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 300. [2020-10-23 19:54:30,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2020-10-23 19:54:30,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 328 transitions. [2020-10-23 19:54:30,160 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 328 transitions. Word has length 154 [2020-10-23 19:54:30,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:54:30,161 INFO L481 AbstractCegarLoop]: Abstraction has 300 states and 328 transitions. [2020-10-23 19:54:30,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 19:54:30,161 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 328 transitions. [2020-10-23 19:54:30,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-23 19:54:30,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:54:30,167 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] [2020-10-23 19:54:30,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 19:54:30,167 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 19:54:30,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:54:30,168 INFO L82 PathProgramCache]: Analyzing trace with hash -2143643077, now seen corresponding path program 1 times [2020-10-23 19:54:30,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:54:30,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850911807] [2020-10-23 19:54:30,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:54:30,173 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:54:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:30,635 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:54:30,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:54:30,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:30,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:54:30,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:30,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:54:30,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:30,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:54:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:30,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:54:30,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:30,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:54:30,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:30,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-23 19:54:30,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:30,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-23 19:54:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:30,798 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 19:54:30,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850911807] [2020-10-23 19:54:30,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:54:30,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 19:54:30,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514848692] [2020-10-23 19:54:30,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 19:54:30,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:54:30,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 19:54:30,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 19:54:30,805 INFO L87 Difference]: Start difference. First operand 300 states and 328 transitions. Second operand 5 states. [2020-10-23 19:54:31,681 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:54:33,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:54:33,379 INFO L93 Difference]: Finished difference Result 486 states and 554 transitions. [2020-10-23 19:54:33,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 19:54:33,385 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-23 19:54:33,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:54:33,390 INFO L225 Difference]: With dead ends: 486 [2020-10-23 19:54:33,391 INFO L226 Difference]: Without dead ends: 340 [2020-10-23 19:54:33,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-23 19:54:33,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-10-23 19:54:33,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 290. [2020-10-23 19:54:33,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-23 19:54:33,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 315 transitions. [2020-10-23 19:54:33,549 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 315 transitions. Word has length 155 [2020-10-23 19:54:33,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:54:33,550 INFO L481 AbstractCegarLoop]: Abstraction has 290 states and 315 transitions. [2020-10-23 19:54:33,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 19:54:33,550 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 315 transitions. [2020-10-23 19:54:33,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-23 19:54:33,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:54:33,553 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] [2020-10-23 19:54:33,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 19:54:33,554 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 19:54:33,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:54:33,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1450707381, now seen corresponding path program 1 times [2020-10-23 19:54:33,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:54:33,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789828092] [2020-10-23 19:54:33,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:54:33,559 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:54:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:34,068 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:54:34,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:54:34,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:34,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:54:34,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:34,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:54:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:34,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:54:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:34,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:54:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:34,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:54:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:34,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 19:54:34,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:34,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 19:54:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:34,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 19:54:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:34,300 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 19:54:34,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789828092] [2020-10-23 19:54:34,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:54:34,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 19:54:34,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366866469] [2020-10-23 19:54:34,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 19:54:34,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:54:34,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 19:54:34,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:54:34,312 INFO L87 Difference]: Start difference. First operand 290 states and 315 transitions. Second operand 11 states. [2020-10-23 19:54:35,030 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:54:35,561 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:54:35,966 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-23 19:54:36,372 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:36,754 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:54:37,141 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:39,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:54:39,686 INFO L93 Difference]: Finished difference Result 533 states and 619 transitions. [2020-10-23 19:54:39,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 19:54:39,687 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 168 [2020-10-23 19:54:39,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:54:39,692 INFO L225 Difference]: With dead ends: 533 [2020-10-23 19:54:39,692 INFO L226 Difference]: Without dead ends: 363 [2020-10-23 19:54:39,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2020-10-23 19:54:39,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-23 19:54:39,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 290. [2020-10-23 19:54:39,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-23 19:54:39,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 314 transitions. [2020-10-23 19:54:39,803 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 314 transitions. Word has length 168 [2020-10-23 19:54:39,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:54:39,804 INFO L481 AbstractCegarLoop]: Abstraction has 290 states and 314 transitions. [2020-10-23 19:54:39,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 19:54:39,804 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 314 transitions. [2020-10-23 19:54:39,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-23 19:54:39,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:54:39,808 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] [2020-10-23 19:54:39,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 19:54:39,808 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 19:54:39,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:54:39,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1090237778, now seen corresponding path program 1 times [2020-10-23 19:54:39,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:54:39,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615330531] [2020-10-23 19:54:39,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:54:39,813 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:54:39,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:40,240 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:54:40,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:54:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:40,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:54:40,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:40,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:54:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:40,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:54:40,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:40,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:54:40,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:40,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:54:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:40,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 19:54:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:40,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-23 19:54:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:40,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:40,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:40,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:40,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:40,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-23 19:54:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:40,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-23 19:54:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:40,443 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 19:54:40,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615330531] [2020-10-23 19:54:40,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:54:40,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 19:54:40,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593066410] [2020-10-23 19:54:40,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 19:54:40,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:54:40,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 19:54:40,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-23 19:54:40,447 INFO L87 Difference]: Start difference. First operand 290 states and 314 transitions. Second operand 8 states. [2020-10-23 19:54:41,245 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:54:43,473 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:54:45,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:54:45,058 INFO L93 Difference]: Finished difference Result 729 states and 871 transitions. [2020-10-23 19:54:45,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 19:54:45,058 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 186 [2020-10-23 19:54:45,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:54:45,064 INFO L225 Difference]: With dead ends: 729 [2020-10-23 19:54:45,064 INFO L226 Difference]: Without dead ends: 559 [2020-10-23 19:54:45,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2020-10-23 19:54:45,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-10-23 19:54:45,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 416. [2020-10-23 19:54:45,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-10-23 19:54:45,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 449 transitions. [2020-10-23 19:54:45,277 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 449 transitions. Word has length 186 [2020-10-23 19:54:45,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:54:45,279 INFO L481 AbstractCegarLoop]: Abstraction has 416 states and 449 transitions. [2020-10-23 19:54:45,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 19:54:45,279 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 449 transitions. [2020-10-23 19:54:45,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-23 19:54:45,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:54:45,282 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:54:45,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 19:54:45,283 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 19:54:45,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:54:45,284 INFO L82 PathProgramCache]: Analyzing trace with hash -2143951942, now seen corresponding path program 1 times [2020-10-23 19:54:45,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:54:45,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908149936] [2020-10-23 19:54:45,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:54:45,287 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:54:45,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:45,683 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:54:45,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:54:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:45,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:54:45,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:45,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:54:45,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:45,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:54:45,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:45,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:54:45,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:45,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:54:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:45,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 19:54:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:45,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-23 19:54:45,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:45,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:45,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:45,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:45,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:54:45,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:45,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:54:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:45,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-23 19:54:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:45,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-10-23 19:54:45,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:46,005 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 19:54:46,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908149936] [2020-10-23 19:54:46,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:54:46,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 19:54:46,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528662231] [2020-10-23 19:54:46,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 19:54:46,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:54:46,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 19:54:46,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-23 19:54:46,009 INFO L87 Difference]: Start difference. First operand 416 states and 449 transitions. Second operand 14 states. [2020-10-23 19:54:46,825 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:47,213 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:54:47,598 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:54:48,023 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:54:48,420 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:54:49,620 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:54:50,032 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:54:50,467 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:54:50,921 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:54:51,295 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:54:53,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:54:53,327 INFO L93 Difference]: Finished difference Result 858 states and 1014 transitions. [2020-10-23 19:54:53,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 19:54:53,328 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 210 [2020-10-23 19:54:53,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:54:53,335 INFO L225 Difference]: With dead ends: 858 [2020-10-23 19:54:53,335 INFO L226 Difference]: Without dead ends: 562 [2020-10-23 19:54:53,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-10-23 19:54:53,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-10-23 19:54:53,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 422. [2020-10-23 19:54:53,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2020-10-23 19:54:53,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 455 transitions. [2020-10-23 19:54:53,541 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 455 transitions. Word has length 210 [2020-10-23 19:54:53,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:54:53,542 INFO L481 AbstractCegarLoop]: Abstraction has 422 states and 455 transitions. [2020-10-23 19:54:53,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 19:54:53,542 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 455 transitions. [2020-10-23 19:54:53,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-23 19:54:53,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:54:53,545 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:54:53,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 19:54:53,546 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 19:54:53,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:54:53,546 INFO L82 PathProgramCache]: Analyzing trace with hash -2081623206, now seen corresponding path program 1 times [2020-10-23 19:54:53,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:54:53,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657651101] [2020-10-23 19:54:53,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:54:53,549 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:54:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:53,975 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:54:53,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:54:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:54,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:54:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:54,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:54:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:54,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:54:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:54,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:54:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:54,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:54:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:54,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 19:54:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:54,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-23 19:54:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:54,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:54,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:54,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:54:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:54,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:54:54,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:54,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:54:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:54,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-23 19:54:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:54,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-10-23 19:54:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:54,208 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 19:54:54,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657651101] [2020-10-23 19:54:54,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:54:54,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 19:54:54,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510118254] [2020-10-23 19:54:54,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 19:54:54,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:54:54,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 19:54:54,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:54:54,212 INFO L87 Difference]: Start difference. First operand 422 states and 455 transitions. Second operand 11 states. [2020-10-23 19:54:54,917 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:54:57,160 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:57,551 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:54:57,951 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:58,321 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:54:58,707 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:54:59,090 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:59,459 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:59,962 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:55:02,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:55:02,615 INFO L93 Difference]: Finished difference Result 1228 states and 1481 transitions. [2020-10-23 19:55:02,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-23 19:55:02,616 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 210 [2020-10-23 19:55:02,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:55:02,622 INFO L225 Difference]: With dead ends: 1228 [2020-10-23 19:55:02,623 INFO L226 Difference]: Without dead ends: 926 [2020-10-23 19:55:02,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2020-10-23 19:55:02,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-10-23 19:55:02,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 677. [2020-10-23 19:55:02,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 677 states. [2020-10-23 19:55:02,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 735 transitions. [2020-10-23 19:55:02,920 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 735 transitions. Word has length 210 [2020-10-23 19:55:02,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:55:02,921 INFO L481 AbstractCegarLoop]: Abstraction has 677 states and 735 transitions. [2020-10-23 19:55:02,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 19:55:02,921 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 735 transitions. [2020-10-23 19:55:02,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-23 19:55:02,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:55:02,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:55:02,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 19:55:02,925 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 19:55:02,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:55:02,926 INFO L82 PathProgramCache]: Analyzing trace with hash 706306696, now seen corresponding path program 1 times [2020-10-23 19:55:02,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:55:02,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69514140] [2020-10-23 19:55:02,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:55:02,929 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:55:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:03,352 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:55:03,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:55:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:03,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:55:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:03,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:55:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:03,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:55:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:03,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:55:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:03,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:55:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:03,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:55:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:03,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 19:55:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:03,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 19:55:03,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:03,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:03,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:03,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:03,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:03,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:55:03,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:03,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:55:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:03,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-23 19:55:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:03,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-10-23 19:55:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:03,614 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 19:55:03,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69514140] [2020-10-23 19:55:03,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:55:03,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-23 19:55:03,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564487772] [2020-10-23 19:55:03,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-23 19:55:03,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:55:03,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-23 19:55:03,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-23 19:55:03,618 INFO L87 Difference]: Start difference. First operand 677 states and 735 transitions. Second operand 12 states. [2020-10-23 19:55:04,358 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:55:06,562 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:55:06,961 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:55:07,331 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:55:07,781 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:55:08,173 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:55:08,625 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:55:08,998 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:55:09,429 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:55:11,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:55:11,519 INFO L93 Difference]: Finished difference Result 1613 states and 1926 transitions. [2020-10-23 19:55:11,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-23 19:55:11,520 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 215 [2020-10-23 19:55:11,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:55:11,528 INFO L225 Difference]: With dead ends: 1613 [2020-10-23 19:55:11,529 INFO L226 Difference]: Without dead ends: 1056 [2020-10-23 19:55:11,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=429, Invalid=1211, Unknown=0, NotChecked=0, Total=1640 [2020-10-23 19:55:11,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2020-10-23 19:55:11,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 675. [2020-10-23 19:55:11,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 675 states. [2020-10-23 19:55:11,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 731 transitions. [2020-10-23 19:55:11,939 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 731 transitions. Word has length 215 [2020-10-23 19:55:11,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:55:11,940 INFO L481 AbstractCegarLoop]: Abstraction has 675 states and 731 transitions. [2020-10-23 19:55:11,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-23 19:55:11,940 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 731 transitions. [2020-10-23 19:55:11,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-23 19:55:11,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:55:11,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:55:11,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 19:55:11,944 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 19:55:11,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:55:11,945 INFO L82 PathProgramCache]: Analyzing trace with hash -529012640, now seen corresponding path program 1 times [2020-10-23 19:55:11,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:55:11,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339693235] [2020-10-23 19:55:11,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:55:11,948 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:55:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:12,326 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:55:12,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:55:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:12,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:55:12,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:12,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:55:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:12,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:55:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:12,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:55:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:12,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:55:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:12,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:55:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:12,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 19:55:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:12,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 19:55:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:12,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:12,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:12,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:12,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:12,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:55:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:12,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:55:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:12,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-23 19:55:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:12,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-23 19:55:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:12,594 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 19:55:12,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339693235] [2020-10-23 19:55:12,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:55:12,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-23 19:55:12,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5521370] [2020-10-23 19:55:12,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-23 19:55:12,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:55:12,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-23 19:55:12,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-23 19:55:12,596 INFO L87 Difference]: Start difference. First operand 675 states and 731 transitions. Second operand 12 states. [2020-10-23 19:55:14,305 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:55:14,701 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:55:15,119 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-23 19:55:15,514 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:55:15,918 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:55:16,303 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:55:19,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:55:19,048 INFO L93 Difference]: Finished difference Result 1621 states and 1948 transitions. [2020-10-23 19:55:19,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-23 19:55:19,048 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 216 [2020-10-23 19:55:19,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:55:19,061 INFO L225 Difference]: With dead ends: 1621 [2020-10-23 19:55:19,061 INFO L226 Difference]: Without dead ends: 1066 [2020-10-23 19:55:19,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=203, Invalid=499, Unknown=0, NotChecked=0, Total=702 [2020-10-23 19:55:19,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-10-23 19:55:19,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 691. [2020-10-23 19:55:19,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-23 19:55:19,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 747 transitions. [2020-10-23 19:55:19,360 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 747 transitions. Word has length 216 [2020-10-23 19:55:19,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:55:19,361 INFO L481 AbstractCegarLoop]: Abstraction has 691 states and 747 transitions. [2020-10-23 19:55:19,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-23 19:55:19,361 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 747 transitions. [2020-10-23 19:55:19,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-23 19:55:19,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:55:19,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:55:19,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 19:55:19,365 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 19:55:19,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:55:19,366 INFO L82 PathProgramCache]: Analyzing trace with hash -548629469, now seen corresponding path program 1 times [2020-10-23 19:55:19,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:55:19,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261285867] [2020-10-23 19:55:19,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:55:19,369 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:55:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:19,763 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:55:19,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:55:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:19,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:55:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:19,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:55:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:19,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:55:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:19,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:55:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:19,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:55:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:19,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:55:19,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:19,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 19:55:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:19,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 19:55:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:19,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:19,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:19,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:19,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:55:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:19,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:55:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:19,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-23 19:55:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:19,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-23 19:55:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:20,043 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 19:55:20,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261285867] [2020-10-23 19:55:20,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:55:20,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:55:20,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713096890] [2020-10-23 19:55:20,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:55:20,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:55:20,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:55:20,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:55:20,046 INFO L87 Difference]: Start difference. First operand 691 states and 747 transitions. Second operand 9 states. [2020-10-23 19:55:20,739 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:55:21,530 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:55:26,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:55:26,791 INFO L93 Difference]: Finished difference Result 2365 states and 2974 transitions. [2020-10-23 19:55:26,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-23 19:55:26,792 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 216 [2020-10-23 19:55:26,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:55:26,803 INFO L225 Difference]: With dead ends: 2365 [2020-10-23 19:55:26,804 INFO L226 Difference]: Without dead ends: 1794 [2020-10-23 19:55:26,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=281, Invalid=1051, Unknown=0, NotChecked=0, Total=1332 [2020-10-23 19:55:26,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1794 states. [2020-10-23 19:55:27,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1794 to 1149. [2020-10-23 19:55:27,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1149 states. [2020-10-23 19:55:27,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 1277 transitions. [2020-10-23 19:55:27,317 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 1277 transitions. Word has length 216 [2020-10-23 19:55:27,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:55:27,317 INFO L481 AbstractCegarLoop]: Abstraction has 1149 states and 1277 transitions. [2020-10-23 19:55:27,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:55:27,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 1277 transitions. [2020-10-23 19:55:27,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-23 19:55:27,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:55:27,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:55:27,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 19:55:27,322 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 19:55:27,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:55:27,323 INFO L82 PathProgramCache]: Analyzing trace with hash -308059731, now seen corresponding path program 1 times [2020-10-23 19:55:27,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:55:27,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386119135] [2020-10-23 19:55:27,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:55:27,326 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:55:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:27,721 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:55:27,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:55:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:27,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:55:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:27,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:55:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:27,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:55:27,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:27,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:55:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:27,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:55:27,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:27,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 19:55:27,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:27,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 19:55:27,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:27,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 19:55:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:27,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-23 19:55:27,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:27,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:27,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:27,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:27,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:27,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:27,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:55:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:27,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:55:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:27,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-23 19:55:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:27,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-10-23 19:55:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:27,927 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 19:55:27,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386119135] [2020-10-23 19:55:27,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:55:27,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:55:27,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854041586] [2020-10-23 19:55:27,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:55:27,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:55:27,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:55:27,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:55:27,929 INFO L87 Difference]: Start difference. First operand 1149 states and 1277 transitions. Second operand 9 states. [2020-10-23 19:55:28,639 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:55:34,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:55:34,183 INFO L93 Difference]: Finished difference Result 2838 states and 3612 transitions. [2020-10-23 19:55:34,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-23 19:55:34,184 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 221 [2020-10-23 19:55:34,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:55:34,207 INFO L225 Difference]: With dead ends: 2838 [2020-10-23 19:55:34,207 INFO L226 Difference]: Without dead ends: 2834 [2020-10-23 19:55:34,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=324, Invalid=1082, Unknown=0, NotChecked=0, Total=1406 [2020-10-23 19:55:34,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2834 states. [2020-10-23 19:55:35,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2834 to 1840. [2020-10-23 19:55:35,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1840 states. [2020-10-23 19:55:35,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 2069 transitions. [2020-10-23 19:55:35,212 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 2069 transitions. Word has length 221 [2020-10-23 19:55:35,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:55:35,213 INFO L481 AbstractCegarLoop]: Abstraction has 1840 states and 2069 transitions. [2020-10-23 19:55:35,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:55:35,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 2069 transitions. [2020-10-23 19:55:35,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-23 19:55:35,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:55:35,220 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:55:35,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 19:55:35,220 INFO L429 AbstractCegarLoop]: === Iteration 11 === [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 19:55:35,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:55:35,221 INFO L82 PathProgramCache]: Analyzing trace with hash 505314514, now seen corresponding path program 1 times [2020-10-23 19:55:35,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:55:35,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513843371] [2020-10-23 19:55:35,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:55:35,683 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 88 [2020-10-23 19:55:35,861 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-23 19:55:36,295 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 88 [2020-10-23 19:55:36,438 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-23 19:55:36,829 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 88 [2020-10-23 19:55:36,965 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-23 19:55:37,363 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 89 [2020-10-23 19:55:37,502 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-23 19:55:37,842 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 81 [2020-10-23 19:55:37,958 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-23 19:55:38,307 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 80 [2020-10-23 19:55:38,433 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-23 19:55:38,755 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 79 [2020-10-23 19:55:38,872 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-23 19:55:39,232 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 78 [2020-10-23 19:55:39,353 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-23 19:55:39,773 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 89 [2020-10-23 19:55:39,945 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-23 19:55:40,332 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 81 [2020-10-23 19:55:40,447 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-23 19:55:40,843 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 89 [2020-10-23 19:55:40,982 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-23 19:55:41,298 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 79 [2020-10-23 19:55:41,407 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-23 19:55:41,749 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 81 [2020-10-23 19:55:41,861 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-23 19:55:42,193 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 79 [2020-10-23 19:55:42,312 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-23 19:55:43,033 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 179 [2020-10-23 19:55:43,716 WARN L193 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:55:44,405 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:55:45,100 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:55:45,783 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:55:46,486 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 179 [2020-10-23 19:55:47,179 WARN L193 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:55:47,864 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:55:47,866 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:55:48,535 WARN L193 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 179 [2020-10-23 19:55:49,218 WARN L193 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 178 [2020-10-23 19:55:49,917 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 179 [2020-10-23 19:55:50,592 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 179 [2020-10-23 19:55:51,277 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 179 [2020-10-23 19:55:51,951 WARN L193 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 178 [2020-10-23 19:55:52,655 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 179 [2020-10-23 19:55:53,344 WARN L193 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 179 [2020-10-23 19:55:53,348 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:55:54,020 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:55:54,709 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:55:55,391 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 179 [2020-10-23 19:55:56,074 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:55:56,764 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:55:57,444 WARN L193 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 179 [2020-10-23 19:55:58,137 WARN L193 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:55:58,835 WARN L193 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:55:58,841 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:55:59,547 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:56:00,252 WARN L193 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:56:00,942 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:56:01,619 WARN L193 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:56:02,316 WARN L193 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:56:03,034 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:56:03,722 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:56:04,424 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:56:04,428 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:56:05,109 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 182 [2020-10-23 19:56:05,815 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 182 [2020-10-23 19:56:06,497 WARN L193 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 182 [2020-10-23 19:56:07,175 WARN L193 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 182 [2020-10-23 19:56:07,178 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:56:07,860 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 179 [2020-10-23 19:56:08,528 WARN L193 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 179 [2020-10-23 19:56:09,224 WARN L193 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 178 [2020-10-23 19:56:09,889 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 178 [2020-10-23 19:56:09,893 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:56:10,578 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 183 [2020-10-23 19:56:11,269 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 183 [2020-10-23 19:56:11,960 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 183 [2020-10-23 19:56:12,666 WARN L193 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 183 [2020-10-23 19:56:12,672 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:56:13,358 WARN L193 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 180 [2020-10-23 19:56:14,041 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 181 [2020-10-23 19:56:14,729 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 180 [2020-10-23 19:56:15,409 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 181 [2020-10-23 19:56:15,413 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:56:16,141 WARN L193 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:56:16,841 WARN L193 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:56:17,576 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:56:18,283 WARN L193 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:56:18,981 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:56:19,730 WARN L193 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:56:20,433 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:56:21,128 WARN L193 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:56:21,131 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:56:21,819 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 182 [2020-10-23 19:56:22,530 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 182 [2020-10-23 19:56:23,223 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 182 [2020-10-23 19:56:23,913 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 182 [2020-10-23 19:56:23,916 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:56:24,617 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:56:25,340 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:56:26,075 WARN L193 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:56:26,789 WARN L193 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:56:27,498 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:56:28,191 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:56:28,903 WARN L193 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:56:29,620 WARN L193 SmtUtils]: Spent 696.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:56:29,623 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:56:30,315 WARN L193 SmtUtils]: Spent 674.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 183 [2020-10-23 19:56:31,014 WARN L193 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 183 [2020-10-23 19:56:31,703 WARN L193 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 183 [2020-10-23 19:56:32,402 WARN L193 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 183 [2020-10-23 19:56:32,405 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:56:33,115 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 183 [2020-10-23 19:56:33,812 WARN L193 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 183 [2020-10-23 19:56:34,508 WARN L193 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 183 [2020-10-23 19:56:35,207 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 183 [2020-10-23 19:56:35,210 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:56:35,915 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 183 [2020-10-23 19:56:36,638 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 183 [2020-10-23 19:56:37,356 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 183 [2020-10-23 19:56:38,060 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 183 [2020-10-23 19:56:38,064 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:56:38,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:56:38,412 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:56:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:56:38,740 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:56:38,986 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 19:56:38,986 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 19:56:38,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-23 19:56:39,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 07:56:39 BoogieIcfgContainer [2020-10-23 19:56:39,046 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 19:56:39,048 INFO L168 Benchmark]: Toolchain (without parser) took 134563.95 ms. Allocated memory was 151.0 MB in the beginning and 973.1 MB in the end (delta: 822.1 MB). Free memory was 125.2 MB in the beginning and 481.9 MB in the end (delta: -356.7 MB). Peak memory consumption was 466.5 MB. Max. memory is 8.0 GB. [2020-10-23 19:56:39,049 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 123.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 19:56:39,049 INFO L168 Benchmark]: CACSL2BoogieTranslator took 736.27 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 102.4 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-23 19:56:39,049 INFO L168 Benchmark]: Boogie Preprocessor took 154.32 ms. Allocated memory is still 151.0 MB. Free memory was 102.4 MB in the beginning and 98.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-23 19:56:39,050 INFO L168 Benchmark]: RCFGBuilder took 1394.93 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 98.2 MB in the beginning and 106.8 MB in the end (delta: -8.7 MB). Peak memory consumption was 24.2 MB. Max. memory is 8.0 GB. [2020-10-23 19:56:39,050 INFO L168 Benchmark]: TraceAbstraction took 132261.09 ms. Allocated memory was 181.4 MB in the beginning and 973.1 MB in the end (delta: 791.7 MB). Free memory was 106.3 MB in the beginning and 481.9 MB in the end (delta: -375.6 MB). Peak memory consumption was 416.1 MB. Max. memory is 8.0 GB. [2020-10-23 19:56:39,056 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 123.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 736.27 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 102.4 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 154.32 ms. Allocated memory is still 151.0 MB. Free memory was 102.4 MB in the beginning and 98.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1394.93 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 98.2 MB in the beginning and 106.8 MB in the end (delta: -8.7 MB). Peak memory consumption was 24.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 132261.09 ms. Allocated memory was 181.4 MB in the beginning and 973.1 MB in the end (delta: 791.7 MB). Free memory was 106.3 MB in the beginning and 481.9 MB in the end (delta: -375.6 MB). Peak memory consumption was 416.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L151] int methAndRunningLastTime ; [L359] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L630] int pumpRunning = 0; [L631] int systemActive = 1; [L862] int waterLevel = 1; [L863] int methaneLevelCritical = 0; [L125] int retValue_acc ; [L126] int tmp ; [L130] FCALL select_helpers() [L131] FCALL select_features() [L132] CALL, EXPR valid_product() [L991] int retValue_acc ; [L994] retValue_acc = 1 [L995] return (retValue_acc); [L132] RET, EXPR valid_product() [L132] tmp = valid_product() [L134] COND TRUE \read(tmp) [L136] FCALL setup() [L137] CALL runTest() [L115] CALL __utac_acc__Specification2_spec__1() [L156] methAndRunningLastTime = 0 [L115] RET __utac_acc__Specification2_spec__1() [L116] CALL test() [L558] int splverifierCounter ; [L559] int tmp ; [L560] int tmp___0 ; [L561] int tmp___1 ; [L562] int tmp___2 ; [L565] splverifierCounter = 0 [L567] COND TRUE 1 [L569] COND TRUE splverifierCounter < 4 [L575] tmp = __VERIFIER_nondet_int() [L577] COND TRUE \read(tmp) [L579] CALL waterRise() [L880] COND TRUE waterLevel < 2 [L881] waterLevel = waterLevel + 1 [L579] RET waterRise() [L585] tmp___0 = __VERIFIER_nondet_int() [L587] COND TRUE \read(tmp___0) [L589] CALL changeMethaneLevel() [L892] COND FALSE !(\read(methaneLevelCritical)) [L895] methaneLevelCritical = 1 [L589] RET changeMethaneLevel() [L595] tmp___2 = __VERIFIER_nondet_int() [L597] COND TRUE \read(tmp___2) [L599] CALL startSystem() [L856] systemActive = 1 [L599] RET startSystem() [L612] CALL timeShift() [L637] COND FALSE !(\read(pumpRunning)) [L644] COND TRUE \read(systemActive) [L646] CALL processEnvironment() [L718] int tmp ; [L721] COND FALSE !(\read(pumpRunning)) [L736] CALL processEnvironment__wrappee__lowWaterSensor() [L692] int tmp ; [L695] COND FALSE !(\read(pumpRunning)) [L710] CALL processEnvironment__wrappee__highWaterSensor() [L666] int tmp ; [L669] COND TRUE ! pumpRunning [L671] CALL, EXPR isHighWaterLevel() [L815] int retValue_acc ; [L816] int tmp ; [L817] int tmp___0 ; [L821] CALL, EXPR isHighWaterSensorDry() [L942] int retValue_acc ; [L945] COND FALSE !(waterLevel < 2) [L949] retValue_acc = 0 [L950] return (retValue_acc); [L821] RET, EXPR isHighWaterSensorDry() [L821] tmp = isHighWaterSensorDry() [L823] COND FALSE !(\read(tmp)) [L826] tmp___0 = 1 [L828] retValue_acc = tmp___0 [L829] return (retValue_acc); [L671] RET, EXPR isHighWaterLevel() [L671] tmp = isHighWaterLevel() [L673] COND TRUE \read(tmp) [L675] CALL activatePump() [L746] pumpRunning = 1 [L675] RET activatePump() [L710] RET processEnvironment__wrappee__highWaterSensor() [L736] RET processEnvironment__wrappee__lowWaterSensor() [L646] RET processEnvironment() [L652] CALL __utac_acc__Specification2_spec__2() [L161] int tmp ; [L162] int tmp___0 ; [L166] CALL, EXPR isMethaneLevelCritical() [L901] int retValue_acc ; [L904] retValue_acc = methaneLevelCritical [L905] return (retValue_acc); [L166] RET, EXPR isMethaneLevelCritical() [L166] tmp = isMethaneLevelCritical() [L168] COND TRUE \read(tmp) [L170] CALL, EXPR isPumpRunning() [L770] int retValue_acc ; [L773] retValue_acc = pumpRunning [L774] return (retValue_acc); [L170] RET, EXPR isPumpRunning() [L170] tmp___0 = isPumpRunning() [L172] COND TRUE \read(tmp___0) [L173] COND FALSE !(\read(methAndRunningLastTime)) [L178] methAndRunningLastTime = 1 [L652] RET __utac_acc__Specification2_spec__2() [L612] RET timeShift() [L567] COND TRUE 1 [L569] COND TRUE splverifierCounter < 4 [L575] tmp = __VERIFIER_nondet_int() [L577] COND FALSE !(\read(tmp)) [L585] tmp___0 = __VERIFIER_nondet_int() [L587] COND FALSE !(\read(tmp___0)) [L595] tmp___2 = __VERIFIER_nondet_int() [L597] COND TRUE \read(tmp___2) [L599] CALL startSystem() [L856] systemActive = 1 [L599] RET startSystem() [L612] CALL timeShift() [L637] COND FALSE !(\read(pumpRunning)) [L644] COND TRUE \read(systemActive) [L646] CALL processEnvironment() [L718] int tmp ; [L721] COND FALSE !(\read(pumpRunning)) [L736] CALL processEnvironment__wrappee__lowWaterSensor() [L692] int tmp ; [L695] COND FALSE !(\read(pumpRunning)) [L710] CALL processEnvironment__wrappee__highWaterSensor() [L666] int tmp ; [L669] COND TRUE ! pumpRunning [L671] CALL, EXPR isHighWaterLevel() [L815] int retValue_acc ; [L816] int tmp ; [L817] int tmp___0 ; [L821] CALL, EXPR isHighWaterSensorDry() [L942] int retValue_acc ; [L945] COND FALSE !(waterLevel < 2) [L949] retValue_acc = 0 [L950] return (retValue_acc); [L821] RET, EXPR isHighWaterSensorDry() [L821] tmp = isHighWaterSensorDry() [L823] COND FALSE !(\read(tmp)) [L826] tmp___0 = 1 [L828] retValue_acc = tmp___0 [L829] return (retValue_acc); [L671] RET, EXPR isHighWaterLevel() [L671] tmp = isHighWaterLevel() [L673] COND TRUE \read(tmp) [L675] CALL activatePump() [L746] pumpRunning = 1 [L675] RET activatePump() [L710] RET processEnvironment__wrappee__highWaterSensor() [L736] RET processEnvironment__wrappee__lowWaterSensor() [L646] RET processEnvironment() [L652] CALL __utac_acc__Specification2_spec__2() [L161] int tmp ; [L162] int tmp___0 ; [L166] CALL, EXPR isMethaneLevelCritical() [L901] int retValue_acc ; [L904] retValue_acc = methaneLevelCritical [L905] return (retValue_acc); [L166] RET, EXPR isMethaneLevelCritical() [L166] tmp = isMethaneLevelCritical() [L168] COND TRUE \read(tmp) [L170] CALL, EXPR isPumpRunning() [L770] int retValue_acc ; [L773] retValue_acc = pumpRunning [L774] return (retValue_acc); [L170] RET, EXPR isPumpRunning() [L170] tmp___0 = isPumpRunning() [L172] COND TRUE \read(tmp___0) [L173] COND TRUE \read(methAndRunningLastTime) [L175] CALL __automaton_fail() [L1004] CALL reach_error() [L3] __assert_fail("0", "minepump_spec2_product54.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 44 procedures, 675 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 132.1s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 57.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2839 SDtfs, 9490 SDslu, 5445 SDs, 0 SdLazy, 11796 SolverSat, 3005 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 28.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 579 GetRequests, 337 SyntacticMatches, 4 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1730 ImplicationChecksByTransitivity, 22.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1840occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 3101 StatesRemovedByMinimization, 10 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...