/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_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 23:51:57,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 23:51:57,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 23:51:57,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 23:51:57,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 23:51:57,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 23:51:57,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 23:51:57,558 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 23:51:57,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 23:51:57,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 23:51:57,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 23:51:57,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 23:51:57,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 23:51:57,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 23:51:57,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 23:51:57,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 23:51:57,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 23:51:57,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 23:51:57,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 23:51:57,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 23:51:57,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 23:51:57,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 23:51:57,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 23:51:57,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 23:51:57,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-06 23:51:57,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-06 23:51:57,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-06 23:51:57,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-06 23:51:57,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-06 23:51:57,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-06 23:51:57,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-06 23:51:57,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-06 23:51:57,619 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-06 23:51:57,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-06 23:51:57,621 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-06 23:51:57,621 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-06 23:51:57,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-06 23:51:57,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-06 23:51:57,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 23:51:57,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 23:51:57,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 23:51:57,629 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-06 23:51:57,644 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 23:51:57,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 23:51:57,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 23:51:57,649 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 23:51:57,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 23:51:57,649 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 23:51:57,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 23:51:57,650 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 23:51:57,650 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 23:51:57,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 23:51:57,652 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 23:51:57,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 23:51:57,652 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 23:51:57,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 23:51:57,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 23:51:57,654 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-06 23:51:57,654 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 23:51:57,654 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 23:51:57,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 23:51:57,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 23:51:57,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-06 23:51:57,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 23:51:57,658 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 23:51:58,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 23:51:58,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 23:51:58,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 23:51:58,079 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 23:51:58,080 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 23:51:58,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product35.cil.c [2020-11-06 23:51:58,164 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf94f6d6b/df5d0d8ec20f45f5931243adbde1952d/FLAG510507262 [2020-11-06 23:51:58,928 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 23:51:58,929 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product35.cil.c [2020-11-06 23:51:58,946 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf94f6d6b/df5d0d8ec20f45f5931243adbde1952d/FLAG510507262 [2020-11-06 23:51:59,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf94f6d6b/df5d0d8ec20f45f5931243adbde1952d [2020-11-06 23:51:59,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 23:51:59,240 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 23:51:59,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 23:51:59,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 23:51:59,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 23:51:59,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:51:59" (1/1) ... [2020-11-06 23:51:59,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73ea7031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:51:59, skipping insertion in model container [2020-11-06 23:51:59,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:51:59" (1/1) ... [2020-11-06 23:51:59,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 23:51:59,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 23:51:59,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 23:51:59,654 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 23:51:59,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 23:51:59,781 INFO L208 MainTranslator]: Completed translation [2020-11-06 23:51:59,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:51:59 WrapperNode [2020-11-06 23:51:59,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 23:51:59,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 23:51:59,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 23:51:59,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 23:51:59,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:51:59" (1/1) ... [2020-11-06 23:51:59,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:51:59" (1/1) ... [2020-11-06 23:51:59,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:51:59" (1/1) ... [2020-11-06 23:51:59,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:51:59" (1/1) ... [2020-11-06 23:51:59,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:51:59" (1/1) ... [2020-11-06 23:51:59,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:51:59" (1/1) ... [2020-11-06 23:51:59,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:51:59" (1/1) ... [2020-11-06 23:51:59,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 23:51:59,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 23:51:59,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 23:51:59,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 23:51:59,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:51:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 23:51:59,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 23:51:59,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 23:51:59,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-11-06 23:51:59,978 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 23:51:59,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-11-06 23:51:59,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-11-06 23:51:59,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-11-06 23:51:59,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-11-06 23:51:59,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-11-06 23:51:59,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-11-06 23:51:59,979 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-11-06 23:51:59,980 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-11-06 23:51:59,980 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-11-06 23:51:59,980 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-11-06 23:51:59,980 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-11-06 23:51:59,980 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-11-06 23:51:59,980 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-11-06 23:51:59,981 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-11-06 23:51:59,981 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-11-06 23:51:59,981 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-11-06 23:51:59,981 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-11-06 23:51:59,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-11-06 23:51:59,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-11-06 23:51:59,982 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-11-06 23:51:59,982 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-11-06 23:51:59,982 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-11-06 23:51:59,982 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-11-06 23:51:59,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-11-06 23:51:59,982 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-11-06 23:51:59,983 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-11-06 23:51:59,983 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-11-06 23:51:59,983 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-11-06 23:51:59,983 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 23:51:59,983 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-11-06 23:51:59,983 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-11-06 23:51:59,983 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-11-06 23:51:59,984 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-11-06 23:51:59,984 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-11-06 23:51:59,984 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-11-06 23:51:59,984 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-11-06 23:51:59,984 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 23:51:59,984 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 23:51:59,985 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 23:51:59,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 23:51:59,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 23:51:59,985 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-11-06 23:51:59,985 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-06 23:51:59,985 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-06 23:51:59,986 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-11-06 23:51:59,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-06 23:51:59,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-06 23:51:59,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 23:51:59,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-06 23:51:59,986 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-11-06 23:51:59,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 23:51:59,986 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-11-06 23:51:59,987 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-11-06 23:51:59,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 23:51:59,987 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-11-06 23:51:59,987 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-11-06 23:51:59,987 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-11-06 23:51:59,987 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-11-06 23:51:59,987 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-11-06 23:51:59,988 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-11-06 23:51:59,988 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-11-06 23:51:59,988 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-11-06 23:51:59,988 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-11-06 23:51:59,988 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-11-06 23:51:59,988 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-11-06 23:51:59,989 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-11-06 23:51:59,989 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-11-06 23:51:59,989 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-11-06 23:51:59,989 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-11-06 23:51:59,989 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-11-06 23:51:59,989 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-11-06 23:51:59,989 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-11-06 23:51:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-11-06 23:51:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-11-06 23:51:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-11-06 23:51:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-11-06 23:51:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-11-06 23:51:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-11-06 23:51:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-11-06 23:51:59,991 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-11-06 23:51:59,991 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-11-06 23:51:59,991 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-11-06 23:51:59,991 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-11-06 23:51:59,991 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-11-06 23:51:59,991 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-11-06 23:51:59,992 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 23:51:59,992 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-11-06 23:51:59,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 23:51:59,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 23:51:59,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 23:52:01,290 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 23:52:01,290 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-06 23:52:01,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:52:01 BoogieIcfgContainer [2020-11-06 23:52:01,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 23:52:01,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 23:52:01,295 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 23:52:01,299 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 23:52:01,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:51:59" (1/3) ... [2020-11-06 23:52:01,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@208b0852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:52:01, skipping insertion in model container [2020-11-06 23:52:01,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:51:59" (2/3) ... [2020-11-06 23:52:01,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@208b0852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:52:01, skipping insertion in model container [2020-11-06 23:52:01,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:52:01" (3/3) ... [2020-11-06 23:52:01,302 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product35.cil.c [2020-11-06 23:52:01,316 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-06 23:52:01,320 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-11-06 23:52:01,330 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-06 23:52:01,355 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 23:52:01,355 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 23:52:01,355 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-06 23:52:01,355 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 23:52:01,355 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 23:52:01,356 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 23:52:01,356 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 23:52:01,356 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 23:52:01,379 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-11-06 23:52:01,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-11-06 23:52:01,400 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:52:01,401 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] [2020-11-06 23:52:01,402 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 23:52:01,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:52:01,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1188886191, now seen corresponding path program 1 times [2020-11-06 23:52:01,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:52:01,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723523019] [2020-11-06 23:52:01,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:52:01,485 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:52:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:02,279 WARN L194 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:52:02,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:52:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:02,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-11-06 23:52:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:02,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-06 23:52:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:02,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-06 23:52:02,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:02,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-06 23:52:02,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:02,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-06 23:52:02,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:02,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-11-06 23:52:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:02,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-06 23:52:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:02,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:52:02,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723523019] [2020-11-06 23:52:02,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:52:02,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 23:52:02,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425802497] [2020-11-06 23:52:02,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 23:52:02,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:52:02,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 23:52:02,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-06 23:52:02,545 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2020-11-06 23:52:03,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:52:03,988 INFO L93 Difference]: Finished difference Result 463 states and 548 transitions. [2020-11-06 23:52:03,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 23:52:03,990 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-11-06 23:52:03,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:52:04,008 INFO L225 Difference]: With dead ends: 463 [2020-11-06 23:52:04,008 INFO L226 Difference]: Without dead ends: 299 [2020-11-06 23:52:04,014 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 [2020-11-06 23:52:04,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-11-06 23:52:04,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 251. [2020-11-06 23:52:04,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-11-06 23:52:04,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 271 transitions. [2020-11-06 23:52:04,213 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 271 transitions. Word has length 154 [2020-11-06 23:52:04,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:52:04,215 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 271 transitions. [2020-11-06 23:52:04,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 23:52:04,215 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 271 transitions. [2020-11-06 23:52:04,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-11-06 23:52:04,220 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:52:04,220 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] [2020-11-06 23:52:04,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 23:52:04,221 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 23:52:04,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:52:04,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1672534681, now seen corresponding path program 1 times [2020-11-06 23:52:04,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:52:04,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028661672] [2020-11-06 23:52:04,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:52:04,227 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:52:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:04,672 WARN L194 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:52:04,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:52:04,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:04,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-11-06 23:52:04,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:04,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-06 23:52:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:04,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-06 23:52:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:04,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-06 23:52:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:04,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-06 23:52:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:04,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-06 23:52:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:04,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-11-06 23:52:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:04,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:52:04,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028661672] [2020-11-06 23:52:04,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:52:04,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-06 23:52:04,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220939521] [2020-11-06 23:52:04,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 23:52:04,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:52:04,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 23:52:04,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-06 23:52:04,824 INFO L87 Difference]: Start difference. First operand 251 states and 271 transitions. Second operand 5 states. [2020-11-06 23:52:05,554 WARN L194 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:52:06,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:52:06,432 INFO L93 Difference]: Finished difference Result 380 states and 429 transitions. [2020-11-06 23:52:06,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-06 23:52:06,432 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-11-06 23:52:06,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:52:06,444 INFO L225 Difference]: With dead ends: 380 [2020-11-06 23:52:06,444 INFO L226 Difference]: Without dead ends: 288 [2020-11-06 23:52:06,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-06 23:52:06,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-11-06 23:52:06,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 241. [2020-11-06 23:52:06,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-11-06 23:52:06,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 258 transitions. [2020-11-06 23:52:06,600 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 258 transitions. Word has length 155 [2020-11-06 23:52:06,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:52:06,601 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 258 transitions. [2020-11-06 23:52:06,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 23:52:06,602 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 258 transitions. [2020-11-06 23:52:06,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-11-06 23:52:06,605 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:52:06,605 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] [2020-11-06 23:52:06,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 23:52:06,605 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 23:52:06,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:52:06,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1537043142, now seen corresponding path program 1 times [2020-11-06 23:52:06,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:52:06,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582078328] [2020-11-06 23:52:06,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:52:06,611 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:52:06,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:07,035 WARN L194 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:52:07,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:52:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:07,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-11-06 23:52:07,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:07,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-06 23:52:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:07,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-06 23:52:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:07,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-06 23:52:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:07,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-06 23:52:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:07,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-06 23:52:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:07,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-11-06 23:52:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:07,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:52:07,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582078328] [2020-11-06 23:52:07,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:52:07,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 23:52:07,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663056312] [2020-11-06 23:52:07,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 23:52:07,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:52:07,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 23:52:07,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-06 23:52:07,294 INFO L87 Difference]: Start difference. First operand 241 states and 258 transitions. Second operand 10 states. [2020-11-06 23:52:07,935 WARN L194 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:52:08,337 WARN L194 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-11-06 23:52:08,652 WARN L194 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-11-06 23:52:08,958 WARN L194 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:52:09,274 WARN L194 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-11-06 23:52:09,602 WARN L194 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:52:10,693 WARN L194 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:52:12,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:52:12,588 INFO L93 Difference]: Finished difference Result 625 states and 722 transitions. [2020-11-06 23:52:12,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-06 23:52:12,589 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 164 [2020-11-06 23:52:12,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:52:12,594 INFO L225 Difference]: With dead ends: 625 [2020-11-06 23:52:12,595 INFO L226 Difference]: Without dead ends: 504 [2020-11-06 23:52:12,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-11-06 23:52:12,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2020-11-06 23:52:12,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 417. [2020-11-06 23:52:12,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-11-06 23:52:12,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 462 transitions. [2020-11-06 23:52:12,828 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 462 transitions. Word has length 164 [2020-11-06 23:52:12,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:52:12,829 INFO L481 AbstractCegarLoop]: Abstraction has 417 states and 462 transitions. [2020-11-06 23:52:12,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 23:52:12,829 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 462 transitions. [2020-11-06 23:52:12,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-11-06 23:52:12,832 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:52:12,833 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:52:12,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 23:52:12,834 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 23:52:12,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:52:12,834 INFO L82 PathProgramCache]: Analyzing trace with hash 833776681, now seen corresponding path program 1 times [2020-11-06 23:52:12,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:52:12,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452976833] [2020-11-06 23:52:12,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:52:12,839 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:52:12,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:13,187 WARN L194 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:52:13,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:52:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:13,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-11-06 23:52:13,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:13,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-06 23:52:13,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:13,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-06 23:52:13,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:13,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-06 23:52:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:13,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-06 23:52:13,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:13,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-11-06 23:52:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:13,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:52:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:13,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-11-06 23:52:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:13,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-06 23:52:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:13,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:52:13,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452976833] [2020-11-06 23:52:13,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:52:13,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-06 23:52:13,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440506976] [2020-11-06 23:52:13,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-06 23:52:13,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:52:13,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-06 23:52:13,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-06 23:52:13,365 INFO L87 Difference]: Start difference. First operand 417 states and 462 transitions. Second operand 7 states. [2020-11-06 23:52:13,989 WARN L194 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:52:15,767 WARN L194 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:52:16,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:52:16,513 INFO L93 Difference]: Finished difference Result 1050 states and 1247 transitions. [2020-11-06 23:52:16,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-06 23:52:16,515 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 172 [2020-11-06 23:52:16,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:52:16,527 INFO L225 Difference]: With dead ends: 1050 [2020-11-06 23:52:16,528 INFO L226 Difference]: Without dead ends: 753 [2020-11-06 23:52:16,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-11-06 23:52:16,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2020-11-06 23:52:16,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 623. [2020-11-06 23:52:16,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2020-11-06 23:52:16,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 692 transitions. [2020-11-06 23:52:16,877 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 692 transitions. Word has length 172 [2020-11-06 23:52:16,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:52:16,877 INFO L481 AbstractCegarLoop]: Abstraction has 623 states and 692 transitions. [2020-11-06 23:52:16,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-06 23:52:16,878 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 692 transitions. [2020-11-06 23:52:16,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-11-06 23:52:16,880 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:52:16,881 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] [2020-11-06 23:52:16,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-06 23:52:16,881 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 23:52:16,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:52:16,882 INFO L82 PathProgramCache]: Analyzing trace with hash -640030055, now seen corresponding path program 1 times [2020-11-06 23:52:16,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:52:16,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618193261] [2020-11-06 23:52:16,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:52:16,886 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:52:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:17,220 WARN L194 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:52:17,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:52:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:17,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-11-06 23:52:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:17,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-06 23:52:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:17,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-06 23:52:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:17,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-06 23:52:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:17,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-06 23:52:17,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:17,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-11-06 23:52:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:17,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-06 23:52:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:17,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-11-06 23:52:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:17,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:52:17,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618193261] [2020-11-06 23:52:17,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:52:17,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 23:52:17,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818918802] [2020-11-06 23:52:17,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 23:52:17,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:52:17,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 23:52:17,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-06 23:52:17,377 INFO L87 Difference]: Start difference. First operand 623 states and 692 transitions. Second operand 10 states. [2020-11-06 23:52:17,946 WARN L194 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:52:19,203 WARN L194 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:52:19,536 WARN L194 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-11-06 23:52:19,893 WARN L194 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:52:20,221 WARN L194 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:52:20,547 WARN L194 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-11-06 23:52:20,853 WARN L194 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:52:21,163 WARN L194 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:52:21,636 WARN L194 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:52:23,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:52:23,338 INFO L93 Difference]: Finished difference Result 1671 states and 1968 transitions. [2020-11-06 23:52:23,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-06 23:52:23,339 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 173 [2020-11-06 23:52:23,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:52:23,348 INFO L225 Difference]: With dead ends: 1671 [2020-11-06 23:52:23,348 INFO L226 Difference]: Without dead ends: 1168 [2020-11-06 23:52:23,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-11-06 23:52:23,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2020-11-06 23:52:23,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1021. [2020-11-06 23:52:23,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1021 states. [2020-11-06 23:52:23,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1139 transitions. [2020-11-06 23:52:23,802 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1139 transitions. Word has length 173 [2020-11-06 23:52:23,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:52:23,802 INFO L481 AbstractCegarLoop]: Abstraction has 1021 states and 1139 transitions. [2020-11-06 23:52:23,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 23:52:23,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1139 transitions. [2020-11-06 23:52:23,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-11-06 23:52:23,806 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:52:23,806 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] [2020-11-06 23:52:23,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-06 23:52:23,806 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 23:52:23,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:52:23,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1609699001, now seen corresponding path program 1 times [2020-11-06 23:52:23,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:52:23,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995441515] [2020-11-06 23:52:23,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:52:23,811 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:52:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:24,146 WARN L194 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:52:24,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:52:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:24,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-11-06 23:52:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:24,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-06 23:52:24,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:24,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-06 23:52:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:24,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-06 23:52:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:24,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-06 23:52:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:24,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-11-06 23:52:24,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:24,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-11-06 23:52:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:24,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-11-06 23:52:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:24,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-11-06 23:52:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:24,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:52:24,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995441515] [2020-11-06 23:52:24,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:52:24,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-06 23:52:24,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969552703] [2020-11-06 23:52:24,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-06 23:52:24,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:52:24,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-06 23:52:24,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-11-06 23:52:24,321 INFO L87 Difference]: Start difference. First operand 1021 states and 1139 transitions. Second operand 11 states. [2020-11-06 23:52:24,937 WARN L194 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:52:26,445 WARN L194 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:52:26,753 WARN L194 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-11-06 23:52:27,153 WARN L194 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:52:27,474 WARN L194 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-11-06 23:52:27,806 WARN L194 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:52:28,543 WARN L194 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:52:28,843 WARN L194 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:52:29,269 WARN L194 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:52:30,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:52:30,501 INFO L93 Difference]: Finished difference Result 2192 states and 2558 transitions. [2020-11-06 23:52:30,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-06 23:52:30,502 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 178 [2020-11-06 23:52:30,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:52:30,510 INFO L225 Difference]: With dead ends: 2192 [2020-11-06 23:52:30,511 INFO L226 Difference]: Without dead ends: 1291 [2020-11-06 23:52:30,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=283, Invalid=773, Unknown=0, NotChecked=0, Total=1056 [2020-11-06 23:52:30,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2020-11-06 23:52:30,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1015. [2020-11-06 23:52:30,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-11-06 23:52:30,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1127 transitions. [2020-11-06 23:52:30,992 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1127 transitions. Word has length 178 [2020-11-06 23:52:30,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:52:30,993 INFO L481 AbstractCegarLoop]: Abstraction has 1015 states and 1127 transitions. [2020-11-06 23:52:30,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-06 23:52:30,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1127 transitions. [2020-11-06 23:52:30,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-11-06 23:52:30,997 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:52:30,998 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] [2020-11-06 23:52:30,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-06 23:52:30,998 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 23:52:30,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:52:30,999 INFO L82 PathProgramCache]: Analyzing trace with hash 161295398, now seen corresponding path program 1 times [2020-11-06 23:52:30,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:52:30,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927394872] [2020-11-06 23:52:30,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:52:31,005 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:52:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:31,297 WARN L194 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:52:31,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:52:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:31,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-11-06 23:52:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:31,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-06 23:52:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:31,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-06 23:52:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:31,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-06 23:52:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:31,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-06 23:52:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:31,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-11-06 23:52:31,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:31,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-11-06 23:52:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:31,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:52:31,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:31,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:52:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:31,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:52:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:31,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-11-06 23:52:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:31,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-11-06 23:52:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:31,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:52:31,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927394872] [2020-11-06 23:52:31,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:52:31,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-06 23:52:31,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792378107] [2020-11-06 23:52:31,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-06 23:52:31,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:52:31,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-06 23:52:31,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-11-06 23:52:31,512 INFO L87 Difference]: Start difference. First operand 1015 states and 1127 transitions. Second operand 11 states. [2020-11-06 23:52:33,052 WARN L194 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:52:33,382 WARN L194 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-11-06 23:52:33,721 WARN L194 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-11-06 23:52:34,063 WARN L194 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:52:34,404 WARN L194 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-11-06 23:52:34,721 WARN L194 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:52:36,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:52:36,170 INFO L93 Difference]: Finished difference Result 2330 states and 2768 transitions. [2020-11-06 23:52:36,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-06 23:52:36,171 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 202 [2020-11-06 23:52:36,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:52:36,187 INFO L225 Difference]: With dead ends: 2330 [2020-11-06 23:52:36,187 INFO L226 Difference]: Without dead ends: 1435 [2020-11-06 23:52:36,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-11-06 23:52:36,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1435 states. [2020-11-06 23:52:36,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1435 to 1047. [2020-11-06 23:52:36,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1047 states. [2020-11-06 23:52:36,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1159 transitions. [2020-11-06 23:52:36,670 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1159 transitions. Word has length 202 [2020-11-06 23:52:36,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:52:36,670 INFO L481 AbstractCegarLoop]: Abstraction has 1047 states and 1159 transitions. [2020-11-06 23:52:36,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-06 23:52:36,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1159 transitions. [2020-11-06 23:52:36,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-11-06 23:52:36,675 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:52:36,675 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] [2020-11-06 23:52:36,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-06 23:52:36,676 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 23:52:36,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:52:36,677 INFO L82 PathProgramCache]: Analyzing trace with hash -812574778, now seen corresponding path program 1 times [2020-11-06 23:52:36,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:52:36,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714461695] [2020-11-06 23:52:36,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:52:36,680 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:52:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:36,988 WARN L194 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:52:36,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:52:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:37,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-11-06 23:52:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:37,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-06 23:52:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:37,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-06 23:52:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:37,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-06 23:52:37,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:37,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-06 23:52:37,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:37,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-11-06 23:52:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:37,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-11-06 23:52:37,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:37,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:52:37,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:37,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:52:37,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:37,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:52:37,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:37,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-11-06 23:52:37,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:37,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-11-06 23:52:37,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:37,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:52:37,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714461695] [2020-11-06 23:52:37,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:52:37,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-11-06 23:52:37,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241185197] [2020-11-06 23:52:37,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-06 23:52:37,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:52:37,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-06 23:52:37,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-11-06 23:52:37,223 INFO L87 Difference]: Start difference. First operand 1047 states and 1159 transitions. Second operand 14 states. [2020-11-06 23:52:37,916 WARN L194 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:52:38,236 WARN L194 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-11-06 23:52:38,549 WARN L194 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:52:38,856 WARN L194 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-11-06 23:52:39,154 WARN L194 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:52:40,188 WARN L194 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:52:40,509 WARN L194 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-11-06 23:52:40,860 WARN L194 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:52:41,226 WARN L194 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-11-06 23:52:41,536 WARN L194 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:52:43,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:52:43,027 INFO L93 Difference]: Finished difference Result 2406 states and 2881 transitions. [2020-11-06 23:52:43,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-06 23:52:43,033 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 202 [2020-11-06 23:52:43,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:52:43,042 INFO L225 Difference]: With dead ends: 2406 [2020-11-06 23:52:43,043 INFO L226 Difference]: Without dead ends: 1479 [2020-11-06 23:52:43,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-11-06 23:52:43,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2020-11-06 23:52:43,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 1071. [2020-11-06 23:52:43,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1071 states. [2020-11-06 23:52:43,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1183 transitions. [2020-11-06 23:52:43,522 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1183 transitions. Word has length 202 [2020-11-06 23:52:43,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:52:43,522 INFO L481 AbstractCegarLoop]: Abstraction has 1071 states and 1183 transitions. [2020-11-06 23:52:43,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-06 23:52:43,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1183 transitions. [2020-11-06 23:52:43,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-11-06 23:52:43,530 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:52:43,530 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] [2020-11-06 23:52:43,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-06 23:52:43,530 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 23:52:43,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:52:43,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1842098537, now seen corresponding path program 1 times [2020-11-06 23:52:43,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:52:43,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976226179] [2020-11-06 23:52:43,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:52:43,535 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:52:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:43,862 WARN L194 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:52:43,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:52:43,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:43,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-11-06 23:52:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:43,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-06 23:52:43,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:43,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-06 23:52:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:43,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-06 23:52:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:43,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-06 23:52:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:43,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-11-06 23:52:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:43,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-11-06 23:52:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:43,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:52:43,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:43,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:52:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:43,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:52:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:43,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-11-06 23:52:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:43,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-11-06 23:52:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:44,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:52:44,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976226179] [2020-11-06 23:52:44,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:52:44,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-06 23:52:44,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769341878] [2020-11-06 23:52:44,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-06 23:52:44,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:52:44,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-06 23:52:44,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-06 23:52:44,056 INFO L87 Difference]: Start difference. First operand 1071 states and 1183 transitions. Second operand 8 states. [2020-11-06 23:52:44,661 WARN L194 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:52:45,423 WARN L194 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:52:48,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:52:48,905 INFO L93 Difference]: Finished difference Result 3615 states and 4408 transitions. [2020-11-06 23:52:48,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-06 23:52:48,906 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 202 [2020-11-06 23:52:48,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:52:48,923 INFO L225 Difference]: With dead ends: 3615 [2020-11-06 23:52:48,923 INFO L226 Difference]: Without dead ends: 2664 [2020-11-06 23:52:48,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2020-11-06 23:52:48,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2020-11-06 23:52:49,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2113. [2020-11-06 23:52:49,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2113 states. [2020-11-06 23:52:49,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 2389 transitions. [2020-11-06 23:52:49,945 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 2389 transitions. Word has length 202 [2020-11-06 23:52:49,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:52:49,945 INFO L481 AbstractCegarLoop]: Abstraction has 2113 states and 2389 transitions. [2020-11-06 23:52:49,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-06 23:52:49,945 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 2389 transitions. [2020-11-06 23:52:49,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-11-06 23:52:49,949 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:52:49,949 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] [2020-11-06 23:52:49,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-06 23:52:49,950 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 23:52:49,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:52:49,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1499841467, now seen corresponding path program 1 times [2020-11-06 23:52:49,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:52:49,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048237738] [2020-11-06 23:52:49,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:52:49,954 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:52:49,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:50,264 WARN L194 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:52:50,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:52:50,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:50,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-11-06 23:52:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:50,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-11-06 23:52:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:50,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-06 23:52:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:50,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-06 23:52:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:50,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-06 23:52:50,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:50,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-11-06 23:52:50,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:50,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-11-06 23:52:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:50,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-11-06 23:52:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:50,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:52:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:50,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:52:50,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:50,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:52:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:50,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-11-06 23:52:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:50,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-11-06 23:52:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:52:50,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:52:50,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1048237738] [2020-11-06 23:52:50,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:52:50,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-06 23:52:50,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823337297] [2020-11-06 23:52:50,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-06 23:52:50,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:52:50,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-06 23:52:50,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-06 23:52:50,409 INFO L87 Difference]: Start difference. First operand 2113 states and 2389 transitions. Second operand 8 states. [2020-11-06 23:52:51,021 WARN L194 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:52:54,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:52:54,989 INFO L93 Difference]: Finished difference Result 4176 states and 5071 transitions. [2020-11-06 23:52:54,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-06 23:52:54,990 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 207 [2020-11-06 23:52:54,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:52:55,017 INFO L225 Difference]: With dead ends: 4176 [2020-11-06 23:52:55,017 INFO L226 Difference]: Without dead ends: 4172 [2020-11-06 23:52:55,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2020-11-06 23:52:55,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2020-11-06 23:52:56,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 3261. [2020-11-06 23:52:56,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3261 states. [2020-11-06 23:52:56,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3261 states to 3261 states and 3707 transitions. [2020-11-06 23:52:56,338 INFO L78 Accepts]: Start accepts. Automaton has 3261 states and 3707 transitions. Word has length 207 [2020-11-06 23:52:56,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:52:56,339 INFO L481 AbstractCegarLoop]: Abstraction has 3261 states and 3707 transitions. [2020-11-06 23:52:56,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-06 23:52:56,339 INFO L276 IsEmpty]: Start isEmpty. Operand 3261 states and 3707 transitions. [2020-11-06 23:52:56,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-11-06 23:52:56,347 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:52:56,348 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:52:56,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-06 23:52:56,349 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]=== [2020-11-06 23:52:56,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:52:56,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1257065967, now seen corresponding path program 1 times [2020-11-06 23:52:56,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:52:56,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14247212] [2020-11-06 23:52:56,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:52:56,671 WARN L194 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 89 [2020-11-06 23:52:56,813 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-11-06 23:52:57,496 WARN L194 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 184 [2020-11-06 23:52:58,207 WARN L194 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 185 [2020-11-06 23:52:58,936 WARN L194 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 185 [2020-11-06 23:52:59,562 WARN L194 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 185 [2020-11-06 23:53:00,175 WARN L194 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 185 [2020-11-06 23:53:00,775 WARN L194 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 185 [2020-11-06 23:53:01,398 WARN L194 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 185 [2020-11-06 23:53:02,032 WARN L194 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 185 [2020-11-06 23:53:02,638 WARN L194 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 185 [2020-11-06 23:53:03,241 WARN L194 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 185 [2020-11-06 23:53:03,849 WARN L194 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 185 [2020-11-06 23:53:04,450 WARN L194 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 184 [2020-11-06 23:53:05,054 WARN L194 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 185 [2020-11-06 23:53:05,676 WARN L194 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 184 [2020-11-06 23:53:06,273 WARN L194 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 184 [2020-11-06 23:53:06,893 WARN L194 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 185 [2020-11-06 23:53:06,897 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-11-06 23:53:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 23:53:07,386 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 23:53:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 23:53:07,840 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 23:53:08,125 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-06 23:53:08,125 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 23:53:08,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-06 23:53:08,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:53:08 BoogieIcfgContainer [2020-11-06 23:53:08,156 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 23:53:08,157 INFO L168 Benchmark]: Toolchain (without parser) took 68927.05 ms. Allocated memory was 151.0 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 126.9 MB in the beginning and 714.1 MB in the end (delta: -587.2 MB). Peak memory consumption was 513.1 MB. Max. memory is 8.0 GB. [2020-11-06 23:53:08,158 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 23:53:08,159 INFO L168 Benchmark]: CACSL2BoogieTranslator took 536.61 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 105.7 MB in the end (delta: 20.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-11-06 23:53:08,159 INFO L168 Benchmark]: Boogie Preprocessor took 111.24 ms. Allocated memory is still 151.0 MB. Free memory was 105.5 MB in the beginning and 133.3 MB in the end (delta: -27.8 MB). Peak memory consumption was 9.0 MB. Max. memory is 8.0 GB. [2020-11-06 23:53:08,160 INFO L168 Benchmark]: RCFGBuilder took 1398.08 ms. Allocated memory is still 151.0 MB. Free memory was 133.3 MB in the beginning and 88.6 MB in the end (delta: 44.7 MB). Peak memory consumption was 64.3 MB. Max. memory is 8.0 GB. [2020-11-06 23:53:08,161 INFO L168 Benchmark]: TraceAbstraction took 66860.83 ms. Allocated memory was 151.0 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 88.0 MB in the beginning and 714.1 MB in the end (delta: -626.1 MB). Peak memory consumption was 473.4 MB. Max. memory is 8.0 GB. [2020-11-06 23:53:08,163 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 536.61 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 105.7 MB in the end (delta: 20.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 111.24 ms. Allocated memory is still 151.0 MB. Free memory was 105.5 MB in the beginning and 133.3 MB in the end (delta: -27.8 MB). Peak memory consumption was 9.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1398.08 ms. Allocated memory is still 151.0 MB. Free memory was 133.3 MB in the beginning and 88.6 MB in the end (delta: 44.7 MB). Peak memory consumption was 64.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 66860.83 ms. Allocated memory was 151.0 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 88.0 MB in the beginning and 714.1 MB in the end (delta: -626.1 MB). Peak memory consumption was 473.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L418] int pumpRunning = 0; [L419] int systemActive = 1; [L657] int methAndRunningLastTime ; [L743] int cleanupTimeShifts = 4; [L841] int waterLevel = 1; [L842] int methaneLevelCritical = 0; [L817] int retValue_acc ; [L818] int tmp ; [L822] FCALL select_helpers() [L823] FCALL select_features() [L824] CALL, EXPR valid_product() [L725] int retValue_acc ; [L728] retValue_acc = 1 [L729] return (retValue_acc); [L824] RET, EXPR valid_product() [L824] tmp = valid_product() [L826] COND TRUE \read(tmp) [L828] FCALL setup() [L829] CALL runTest() [L810] CALL __utac_acc__Specification2_spec__1() [L662] methAndRunningLastTime = 0 [L810] RET __utac_acc__Specification2_spec__1() [L811] CALL test() [L590] int splverifierCounter ; [L591] int tmp ; [L592] int tmp___0 ; [L593] int tmp___1 ; [L594] int tmp___2 ; [L597] splverifierCounter = 0 [L599] COND TRUE 1 [L601] COND TRUE splverifierCounter < 4 [L607] tmp = __VERIFIER_nondet_int() [L609] COND TRUE \read(tmp) [L611] CALL waterRise() [L859] COND TRUE waterLevel < 2 [L860] waterLevel = waterLevel + 1 [L611] RET waterRise() [L617] tmp___0 = __VERIFIER_nondet_int() [L619] COND TRUE \read(tmp___0) [L621] CALL changeMethaneLevel() [L871] COND FALSE !(\read(methaneLevelCritical)) [L874] methaneLevelCritical = 1 [L621] RET changeMethaneLevel() [L627] tmp___2 = __VERIFIER_nondet_int() [L629] COND TRUE \read(tmp___2) [L644] CALL timeShift() [L426] COND FALSE !(\read(pumpRunning)) [L433] COND TRUE \read(systemActive) [L435] CALL processEnvironment() [L455] int tmp ; [L458] COND TRUE ! pumpRunning [L460] CALL, EXPR isHighWaterLevel() [L552] int retValue_acc ; [L553] int tmp ; [L554] int tmp___0 ; [L558] CALL, EXPR isHighWaterSensorDry() [L921] int retValue_acc ; [L924] COND FALSE !(waterLevel < 2) [L928] retValue_acc = 0 [L929] return (retValue_acc); [L558] RET, EXPR isHighWaterSensorDry() [L558] tmp = isHighWaterSensorDry() [L560] COND FALSE !(\read(tmp)) [L563] tmp___0 = 1 [L565] retValue_acc = tmp___0 [L566] return (retValue_acc); [L460] RET, EXPR isHighWaterLevel() [L460] tmp = isHighWaterLevel() [L462] COND TRUE \read(tmp) [L464] CALL activatePump() [L483] pumpRunning = 1 [L464] RET activatePump() [L435] RET processEnvironment() [L441] CALL __utac_acc__Specification2_spec__2() [L667] int tmp ; [L668] int tmp___0 ; [L672] CALL, EXPR isMethaneLevelCritical() [L880] int retValue_acc ; [L883] retValue_acc = methaneLevelCritical [L884] return (retValue_acc); [L672] RET, EXPR isMethaneLevelCritical() [L672] tmp = isMethaneLevelCritical() [L674] COND TRUE \read(tmp) [L676] CALL, EXPR isPumpRunning() [L507] int retValue_acc ; [L510] retValue_acc = pumpRunning [L511] return (retValue_acc); [L676] RET, EXPR isPumpRunning() [L676] tmp___0 = isPumpRunning() [L678] COND TRUE \read(tmp___0) [L679] COND FALSE !(\read(methAndRunningLastTime)) [L684] methAndRunningLastTime = 1 [L441] RET __utac_acc__Specification2_spec__2() [L644] RET timeShift() [L599] COND TRUE 1 [L601] COND TRUE splverifierCounter < 4 [L607] tmp = __VERIFIER_nondet_int() [L609] COND FALSE !(\read(tmp)) [L617] tmp___0 = __VERIFIER_nondet_int() [L619] COND FALSE !(\read(tmp___0)) [L627] tmp___2 = __VERIFIER_nondet_int() [L629] COND TRUE \read(tmp___2) [L644] CALL timeShift() [L426] COND TRUE \read(pumpRunning) [L428] CALL lowerWaterLevel() [L847] COND TRUE waterLevel > 0 [L848] waterLevel = waterLevel - 1 [L428] RET lowerWaterLevel() [L433] COND TRUE \read(systemActive) [L435] CALL processEnvironment() [L455] int tmp ; [L458] COND FALSE !(! pumpRunning) [L473] FCALL processEnvironment__wrappee__base() [L435] RET processEnvironment() [L441] CALL __utac_acc__Specification2_spec__2() [L667] int tmp ; [L668] int tmp___0 ; [L672] CALL, EXPR isMethaneLevelCritical() [L880] int retValue_acc ; [L883] retValue_acc = methaneLevelCritical [L884] return (retValue_acc); [L672] RET, EXPR isMethaneLevelCritical() [L672] tmp = isMethaneLevelCritical() [L674] COND TRUE \read(tmp) [L676] CALL, EXPR isPumpRunning() [L507] int retValue_acc ; [L510] retValue_acc = pumpRunning [L511] return (retValue_acc); [L676] RET, EXPR isPumpRunning() [L676] tmp___0 = isPumpRunning() [L678] COND TRUE \read(tmp___0) [L679] COND TRUE \read(methAndRunningLastTime) [L681] CALL __automaton_fail() [L738] CALL reach_error() [L3] __assert_fail("0", "minepump_spec2_product35.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 634 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 66.7s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 43.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2370 SDtfs, 6646 SDslu, 4664 SDs, 0 SdLazy, 8905 SolverSat, 1958 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 454 GetRequests, 266 SyntacticMatches, 3 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 17.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3261occurred 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: 5.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 2993 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...