/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:20:15,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:20:15,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:20:15,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:20:15,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:20:15,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:20:15,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:20:15,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:20:15,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:20:15,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:20:15,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:20:15,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:20:15,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:20:15,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:20:15,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:20:15,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:20:15,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:20:15,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:20:15,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:20:15,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:20:15,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:20:15,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:20:15,617 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:20:15,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:20:15,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:20:15,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:20:15,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:20:15,644 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:20:15,645 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:20:15,645 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:20:15,646 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:20:15,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:20:15,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:20:15,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:20:15,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:20:15,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:20:15,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:20:15,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:20:15,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:20:15,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:20:15,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:20:15,656 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:20:15,679 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:20:15,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:20:15,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:20:15,684 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:20:15,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:20:15,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:20:15,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:20:15,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:20:15,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:20:15,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:20:15,687 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:20:15,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:20:15,687 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:20:15,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:20:15,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:20:15,688 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:20:15,688 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:20:15,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:20:15,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:20:15,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:20:15,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:20:15,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:20:15,689 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:20:16,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:20:16,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:20:16,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:20:16,133 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:20:16,134 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:20:16,138 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product44.cil.c [2020-10-23 20:20:16,229 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a5b545ec/8a20f0d1d8d44cb2ae13724b41eb9b78/FLAG914bbae91 [2020-10-23 20:20:16,881 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:20:16,882 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product44.cil.c [2020-10-23 20:20:16,913 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a5b545ec/8a20f0d1d8d44cb2ae13724b41eb9b78/FLAG914bbae91 [2020-10-23 20:20:17,203 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a5b545ec/8a20f0d1d8d44cb2ae13724b41eb9b78 [2020-10-23 20:20:17,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:20:17,212 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:20:17,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:20:17,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:20:17,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:20:17,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:20:17" (1/1) ... [2020-10-23 20:20:17,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72336bda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:17, skipping insertion in model container [2020-10-23 20:20:17,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:20:17" (1/1) ... [2020-10-23 20:20:17,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:20:17,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:20:17,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:20:17,605 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:20:17,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:20:17,738 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:20:17,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:17 WrapperNode [2020-10-23 20:20:17,738 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:20:17,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:20:17,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:20:17,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:20:17,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:17" (1/1) ... [2020-10-23 20:20:17,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:17" (1/1) ... [2020-10-23 20:20:17,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:17" (1/1) ... [2020-10-23 20:20:17,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:17" (1/1) ... [2020-10-23 20:20:17,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:17" (1/1) ... [2020-10-23 20:20:17,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:17" (1/1) ... [2020-10-23 20:20:17,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:17" (1/1) ... [2020-10-23 20:20:17,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:20:17,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:20:17,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:20:17,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:20:17,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:20:17,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:20:17,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:20:17,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 20:20:17,965 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:20:17,965 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 20:20:17,965 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 20:20:17,965 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 20:20:17,966 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 20:20:17,966 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 20:20:17,966 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 20:20:17,966 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 20:20:17,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 20:20:17,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 20:20:17,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 20:20:17,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 20:20:17,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 20:20:17,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 20:20:17,967 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 20:20:17,967 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 20:20:17,968 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 20:20:17,968 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-10-23 20:20:17,968 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 20:20:17,968 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 20:20:17,968 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 20:20:17,968 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 20:20:17,969 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 20:20:17,969 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 20:20:17,969 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-10-23 20:20:17,969 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-10-23 20:20:17,969 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 20:20:17,969 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 20:20:17,970 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 20:20:17,970 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 20:20:17,970 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 20:20:17,970 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 20:20:17,970 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 20:20:17,970 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 20:20:17,971 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 20:20:17,971 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:20:17,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 20:20:17,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:20:17,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:20:17,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:20:17,971 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:20:17,972 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:20:17,972 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:20:17,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:20:17,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:20:17,972 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 20:20:17,972 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 20:20:17,973 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 20:20:17,973 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 20:20:17,973 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 20:20:17,973 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 20:20:17,973 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 20:20:17,973 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 20:20:17,973 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:20:17,974 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:20:17,974 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 20:20:17,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:20:17,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:20:17,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:20:17,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:20:17,975 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 20:20:17,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:20:17,975 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 20:20:17,975 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 20:20:17,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:20:17,975 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 20:20:17,976 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 20:20:17,976 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 20:20:17,976 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 20:20:17,976 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 20:20:17,976 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 20:20:17,976 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 20:20:17,976 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 20:20:17,977 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-10-23 20:20:17,977 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-10-23 20:20:17,977 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:20:17,977 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:20:17,977 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 20:20:17,977 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 20:20:17,977 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 20:20:17,978 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-10-23 20:20:17,978 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 20:20:17,978 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 20:20:17,978 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 20:20:17,978 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 20:20:17,978 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 20:20:17,978 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 20:20:17,979 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 20:20:17,979 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 20:20:17,979 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 20:20:17,979 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:20:17,979 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 20:20:17,979 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:20:17,980 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 20:20:17,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:20:17,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:20:17,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:20:19,113 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:20:19,113 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 20:20:19,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:20:19 BoogieIcfgContainer [2020-10-23 20:20:19,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:20:19,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:20:19,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:20:19,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:20:19,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:20:17" (1/3) ... [2020-10-23 20:20:19,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6d6160 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:20:19, skipping insertion in model container [2020-10-23 20:20:19,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:17" (2/3) ... [2020-10-23 20:20:19,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6d6160 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:20:19, skipping insertion in model container [2020-10-23 20:20:19,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:20:19" (3/3) ... [2020-10-23 20:20:19,126 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product44.cil.c [2020-10-23 20:20:19,140 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:20:19,146 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 20:20:19,161 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 20:20:19,186 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:20:19,186 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:20:19,186 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:20:19,186 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:20:19,187 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:20:19,187 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:20:19,187 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:20:19,187 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:20:19,215 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states. [2020-10-23 20:20:19,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-23 20:20:19,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:19,256 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:19,257 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:20:19,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:19,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1697234131, now seen corresponding path program 1 times [2020-10-23 20:20:19,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:19,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301385190] [2020-10-23 20:20:19,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:19,367 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:20,167 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:20,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:20,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:20,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:20,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:20,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:20,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:20,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:20,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:20,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 20:20:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:20,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:20,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 20:20:20,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:20,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 20:20:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:20,381 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:20:20,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301385190] [2020-10-23 20:20:20,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:20,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:20:20,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621600030] [2020-10-23 20:20:20,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:20:20,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:20,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:20:20,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:20:20,415 INFO L87 Difference]: Start difference. First operand 335 states. Second operand 4 states. [2020-10-23 20:20:22,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:22,331 INFO L93 Difference]: Finished difference Result 524 states and 610 transitions. [2020-10-23 20:20:22,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:20:22,333 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-10-23 20:20:22,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:22,351 INFO L225 Difference]: With dead ends: 524 [2020-10-23 20:20:22,351 INFO L226 Difference]: Without dead ends: 330 [2020-10-23 20:20:22,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:20:22,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-10-23 20:20:22,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 281. [2020-10-23 20:20:22,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-10-23 20:20:22,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 303 transitions. [2020-10-23 20:20:22,571 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 303 transitions. Word has length 166 [2020-10-23 20:20:22,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:22,575 INFO L481 AbstractCegarLoop]: Abstraction has 281 states and 303 transitions. [2020-10-23 20:20:22,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:20:22,575 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 303 transitions. [2020-10-23 20:20:22,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-23 20:20:22,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:22,584 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:22,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:20:22,585 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:20:22,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:22,586 INFO L82 PathProgramCache]: Analyzing trace with hash 467046913, now seen corresponding path program 1 times [2020-10-23 20:20:22,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:22,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143261467] [2020-10-23 20:20:22,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:22,597 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:23,129 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:23,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:23,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:23,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:23,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:23,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:23,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:23,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:23,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:20:23,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:23,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:23,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-23 20:20:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:23,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:20:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:23,298 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:20:23,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143261467] [2020-10-23 20:20:23,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:23,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 20:20:23,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070665625] [2020-10-23 20:20:23,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 20:20:23,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:23,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 20:20:23,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:20:23,312 INFO L87 Difference]: Start difference. First operand 281 states and 303 transitions. Second operand 5 states. [2020-10-23 20:20:24,235 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:25,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:25,587 INFO L93 Difference]: Finished difference Result 437 states and 488 transitions. [2020-10-23 20:20:25,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 20:20:25,588 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-23 20:20:25,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:25,593 INFO L225 Difference]: With dead ends: 437 [2020-10-23 20:20:25,593 INFO L226 Difference]: Without dead ends: 319 [2020-10-23 20:20:25,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:20:25,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-23 20:20:25,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 271. [2020-10-23 20:20:25,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-23 20:20:25,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 290 transitions. [2020-10-23 20:20:25,709 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 290 transitions. Word has length 167 [2020-10-23 20:20:25,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:25,710 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 290 transitions. [2020-10-23 20:20:25,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 20:20:25,710 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 290 transitions. [2020-10-23 20:20:25,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-23 20:20:25,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:25,713 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:25,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:20:25,714 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:20:25,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:25,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1247261607, now seen corresponding path program 1 times [2020-10-23 20:20:25,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:25,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429297932] [2020-10-23 20:20:25,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:25,719 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:26,392 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:26,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:26,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:26,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:26,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:26,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:26,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:26,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:26,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:26,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:20:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:26,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:20:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:26,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:26,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-23 20:20:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:26,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-23 20:20:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:26,632 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:20:26,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429297932] [2020-10-23 20:20:26,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:26,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:20:26,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624126794] [2020-10-23 20:20:26,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 20:20:26,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:26,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 20:20:26,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:20:26,636 INFO L87 Difference]: Start difference. First operand 271 states and 290 transitions. Second operand 11 states. [2020-10-23 20:20:27,414 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:27,922 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:28,365 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-23 20:20:28,787 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:29,224 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:29,640 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:31,142 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:34,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:34,016 INFO L93 Difference]: Finished difference Result 741 states and 852 transitions. [2020-10-23 20:20:34,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 20:20:34,017 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 180 [2020-10-23 20:20:34,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:34,024 INFO L225 Difference]: With dead ends: 741 [2020-10-23 20:20:34,030 INFO L226 Difference]: Without dead ends: 590 [2020-10-23 20:20:34,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2020-10-23 20:20:34,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2020-10-23 20:20:34,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 477. [2020-10-23 20:20:34,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-10-23 20:20:34,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 527 transitions. [2020-10-23 20:20:34,320 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 527 transitions. Word has length 180 [2020-10-23 20:20:34,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:34,321 INFO L481 AbstractCegarLoop]: Abstraction has 477 states and 527 transitions. [2020-10-23 20:20:34,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 20:20:34,321 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 527 transitions. [2020-10-23 20:20:34,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-23 20:20:34,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:34,325 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:34,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:20:34,325 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:20:34,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:34,326 INFO L82 PathProgramCache]: Analyzing trace with hash -3829081, now seen corresponding path program 1 times [2020-10-23 20:20:34,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:34,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586799018] [2020-10-23 20:20:34,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:34,330 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:34,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,768 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:34,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:34,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:34,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 20:20:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 20:20:34,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-23 20:20:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-23 20:20:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,984 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-23 20:20:34,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586799018] [2020-10-23 20:20:34,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:34,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:20:34,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82486082] [2020-10-23 20:20:34,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:20:34,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:34,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:20:34,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:20:34,989 INFO L87 Difference]: Start difference. First operand 477 states and 527 transitions. Second operand 10 states. [2020-10-23 20:20:35,742 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:36,966 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:37,376 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:38,912 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:39,342 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:39,787 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:40,335 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:40,715 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:41,167 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:41,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:41,976 INFO L93 Difference]: Finished difference Result 1083 states and 1272 transitions. [2020-10-23 20:20:41,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 20:20:41,976 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 185 [2020-10-23 20:20:41,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:41,983 INFO L225 Difference]: With dead ends: 1083 [2020-10-23 20:20:41,983 INFO L226 Difference]: Without dead ends: 726 [2020-10-23 20:20:41,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-23 20:20:41,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2020-10-23 20:20:42,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 637. [2020-10-23 20:20:42,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 637 states. [2020-10-23 20:20:42,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 709 transitions. [2020-10-23 20:20:42,255 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 709 transitions. Word has length 185 [2020-10-23 20:20:42,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:42,256 INFO L481 AbstractCegarLoop]: Abstraction has 637 states and 709 transitions. [2020-10-23 20:20:42,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:20:42,256 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 709 transitions. [2020-10-23 20:20:42,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-23 20:20:42,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:42,261 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:42,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:20:42,261 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:20:42,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:42,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1182144479, now seen corresponding path program 1 times [2020-10-23 20:20:42,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:42,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293240747] [2020-10-23 20:20:42,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:42,266 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:42,678 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:42,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:42,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:42,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:42,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:42,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:42,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:42,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:20:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:42,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:20:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:42,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:42,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:20:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:42,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:42,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:42,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:20:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:42,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:20:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:42,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:20:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:42,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:20:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:42,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:20:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:42,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-23 20:20:42,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:42,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-23 20:20:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:42,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:20:42,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293240747] [2020-10-23 20:20:42,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:42,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:20:42,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692013192] [2020-10-23 20:20:42,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:20:42,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:42,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:20:42,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:20:42,981 INFO L87 Difference]: Start difference. First operand 637 states and 709 transitions. Second operand 14 states. [2020-10-23 20:20:43,829 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:44,233 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:20:44,627 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:45,027 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:45,431 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:46,899 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:47,313 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:47,749 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:48,206 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:48,602 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:50,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:50,419 INFO L93 Difference]: Finished difference Result 1368 states and 1643 transitions. [2020-10-23 20:20:50,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 20:20:50,419 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 235 [2020-10-23 20:20:50,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:50,426 INFO L225 Difference]: With dead ends: 1368 [2020-10-23 20:20:50,426 INFO L226 Difference]: Without dead ends: 851 [2020-10-23 20:20:50,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-10-23 20:20:50,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2020-10-23 20:20:50,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 652. [2020-10-23 20:20:50,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2020-10-23 20:20:50,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 724 transitions. [2020-10-23 20:20:50,677 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 724 transitions. Word has length 235 [2020-10-23 20:20:50,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:50,678 INFO L481 AbstractCegarLoop]: Abstraction has 652 states and 724 transitions. [2020-10-23 20:20:50,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:20:50,678 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 724 transitions. [2020-10-23 20:20:50,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-23 20:20:50,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:50,683 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:50,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:20:50,683 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:20:50,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:50,684 INFO L82 PathProgramCache]: Analyzing trace with hash -501963713, now seen corresponding path program 1 times [2020-10-23 20:20:50,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:50,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610774011] [2020-10-23 20:20:50,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:50,688 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:51,060 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:51,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:51,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:51,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:51,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:51,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:51,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:51,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:51,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:51,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:51,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:20:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:51,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:20:51,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:51,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:51,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:20:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:51,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:51,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:51,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:20:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:51,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:20:51,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:51,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:20:51,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:51,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:20:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:51,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:20:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:51,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-23 20:20:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:51,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-23 20:20:51,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:51,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:20:51,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610774011] [2020-10-23 20:20:51,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:51,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:20:51,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950393431] [2020-10-23 20:20:51,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 20:20:51,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:51,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 20:20:51,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:20:51,356 INFO L87 Difference]: Start difference. First operand 652 states and 724 transitions. Second operand 11 states. [2020-10-23 20:20:53,367 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:53,759 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:20:54,208 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-23 20:20:54,646 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:55,077 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:55,457 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:56,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:56,795 INFO L93 Difference]: Finished difference Result 1393 states and 1668 transitions. [2020-10-23 20:20:56,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:20:56,797 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 235 [2020-10-23 20:20:56,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:56,803 INFO L225 Difference]: With dead ends: 1393 [2020-10-23 20:20:56,803 INFO L226 Difference]: Without dead ends: 861 [2020-10-23 20:20:56,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-10-23 20:20:56,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2020-10-23 20:20:57,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 668. [2020-10-23 20:20:57,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 668 states. [2020-10-23 20:20:57,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 740 transitions. [2020-10-23 20:20:57,070 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 740 transitions. Word has length 235 [2020-10-23 20:20:57,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:57,071 INFO L481 AbstractCegarLoop]: Abstraction has 668 states and 740 transitions. [2020-10-23 20:20:57,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 20:20:57,071 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 740 transitions. [2020-10-23 20:20:57,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-23 20:20:57,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:57,074 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:57,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:20:57,075 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:20:57,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:57,075 INFO L82 PathProgramCache]: Analyzing trace with hash -872610494, now seen corresponding path program 1 times [2020-10-23 20:20:57,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:57,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960477268] [2020-10-23 20:20:57,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:57,080 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:57,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:57,479 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:57,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:57,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:57,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:57,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:57,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:57,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:57,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:57,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:57,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:57,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:57,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:20:57,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:57,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:20:57,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:57,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:57,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:57,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:20:57,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:57,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:57,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:20:57,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:57,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:20:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:57,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:20:57,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:57,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:20:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:57,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:20:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:57,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-23 20:20:57,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:57,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-23 20:20:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:57,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:20:57,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960477268] [2020-10-23 20:20:57,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:57,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 20:20:57,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360208844] [2020-10-23 20:20:57,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 20:20:57,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:57,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 20:20:57,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-23 20:20:57,729 INFO L87 Difference]: Start difference. First operand 668 states and 740 transitions. Second operand 8 states. [2020-10-23 20:20:58,451 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:59,305 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:21:03,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:21:03,267 INFO L93 Difference]: Finished difference Result 2147 states and 2600 transitions. [2020-10-23 20:21:03,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-23 20:21:03,268 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 235 [2020-10-23 20:21:03,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:21:03,278 INFO L225 Difference]: With dead ends: 2147 [2020-10-23 20:21:03,279 INFO L226 Difference]: Without dead ends: 1599 [2020-10-23 20:21:03,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2020-10-23 20:21:03,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1599 states. [2020-10-23 20:21:03,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1599 to 1336. [2020-10-23 20:21:03,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1336 states. [2020-10-23 20:21:03,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 1509 transitions. [2020-10-23 20:21:03,773 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 1509 transitions. Word has length 235 [2020-10-23 20:21:03,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:21:03,774 INFO L481 AbstractCegarLoop]: Abstraction has 1336 states and 1509 transitions. [2020-10-23 20:21:03,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 20:21:03,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 1509 transitions. [2020-10-23 20:21:03,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-23 20:21:03,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:03,778 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:21:03,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 20:21:03,779 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:21:03,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:03,779 INFO L82 PathProgramCache]: Analyzing trace with hash -2095501996, now seen corresponding path program 1 times [2020-10-23 20:21:03,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:03,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603533555] [2020-10-23 20:21:03,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:03,783 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:21:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:04,288 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:21:04,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:04,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:21:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:04,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:21:04,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:04,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:21:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:04,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:21:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:04,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:21:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:04,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:21:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:04,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:21:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:04,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 20:21:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:04,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:04,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-23 20:21:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:04,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:21:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:04,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:21:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:04,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:21:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:04,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:21:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:04,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:21:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:04,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:21:04,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:04,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-23 20:21:04,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:04,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-23 20:21:04,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:04,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:21:04,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603533555] [2020-10-23 20:21:04,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:21:04,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-23 20:21:04,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368703290] [2020-10-23 20:21:04,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 20:21:04,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:21:04,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 20:21:04,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-23 20:21:04,720 INFO L87 Difference]: Start difference. First operand 1336 states and 1509 transitions. Second operand 15 states. [2020-10-23 20:21:05,830 WARN L193 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 207 [2020-10-23 20:21:06,984 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:21:08,653 WARN L193 SmtUtils]: Spent 752.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 209 [2020-10-23 20:21:09,507 WARN L193 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 211 [2020-10-23 20:21:10,047 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:10,459 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:21:11,233 WARN L193 SmtUtils]: Spent 731.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 210 [2020-10-23 20:21:11,692 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:12,153 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:21:12,595 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:16,794 WARN L193 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 207 [2020-10-23 20:21:17,243 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:21:17,639 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:18,093 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:20,259 WARN L193 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 209 [2020-10-23 20:21:21,102 WARN L193 SmtUtils]: Spent 806.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-10-23 20:21:21,948 WARN L193 SmtUtils]: Spent 766.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 210 [2020-10-23 20:21:22,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:21:22,784 INFO L93 Difference]: Finished difference Result 4020 states and 4877 transitions. [2020-10-23 20:21:22,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-23 20:21:22,786 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 240 [2020-10-23 20:21:22,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:21:22,843 INFO L225 Difference]: With dead ends: 4020 [2020-10-23 20:21:22,843 INFO L226 Difference]: Without dead ends: 3075 [2020-10-23 20:21:22,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1307 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=805, Invalid=3227, Unknown=0, NotChecked=0, Total=4032 [2020-10-23 20:21:22,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3075 states. [2020-10-23 20:21:24,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3075 to 2387. [2020-10-23 20:21:24,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2387 states. [2020-10-23 20:21:24,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2387 states to 2387 states and 2687 transitions. [2020-10-23 20:21:24,117 INFO L78 Accepts]: Start accepts. Automaton has 2387 states and 2687 transitions. Word has length 240 [2020-10-23 20:21:24,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:21:24,118 INFO L481 AbstractCegarLoop]: Abstraction has 2387 states and 2687 transitions. [2020-10-23 20:21:24,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 20:21:24,118 INFO L276 IsEmpty]: Start isEmpty. Operand 2387 states and 2687 transitions. [2020-10-23 20:21:24,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-23 20:21:24,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:24,123 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:21:24,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 20:21:24,124 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:21:24,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:24,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1665802639, now seen corresponding path program 1 times [2020-10-23 20:21:24,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:24,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823774661] [2020-10-23 20:21:24,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:24,630 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 90 [2020-10-23 20:21:24,809 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-23 20:21:25,259 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 92 [2020-10-23 20:21:25,417 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-23 20:21:25,956 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 92 [2020-10-23 20:21:26,120 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-23 20:21:26,609 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 93 [2020-10-23 20:21:26,759 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-23 20:21:27,212 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 87 [2020-10-23 20:21:27,350 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-23 20:21:27,737 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 83 [2020-10-23 20:21:27,861 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-23 20:21:28,292 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 84 [2020-10-23 20:21:28,414 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-23 20:21:28,857 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 83 [2020-10-23 20:21:29,009 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-23 20:21:29,500 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 91 [2020-10-23 20:21:29,652 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-23 20:21:30,102 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 87 [2020-10-23 20:21:30,234 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-23 20:21:30,731 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 93 [2020-10-23 20:21:30,883 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-23 20:21:31,319 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 84 [2020-10-23 20:21:31,441 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-23 20:21:31,898 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 87 [2020-10-23 20:21:32,034 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-23 20:21:32,458 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 84 [2020-10-23 20:21:32,597 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-23 20:21:33,493 WARN L193 SmtUtils]: Spent 832.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 203 [2020-10-23 20:21:34,402 WARN L193 SmtUtils]: Spent 863.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 204 [2020-10-23 20:21:35,283 WARN L193 SmtUtils]: Spent 839.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 204 [2020-10-23 20:21:36,151 WARN L193 SmtUtils]: Spent 831.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 203 [2020-10-23 20:21:36,155 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:36,978 WARN L193 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 201 [2020-10-23 20:21:37,809 WARN L193 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 200 [2020-10-23 20:21:38,690 WARN L193 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 200 [2020-10-23 20:21:39,567 WARN L193 SmtUtils]: Spent 850.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 201 [2020-10-23 20:21:39,571 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:40,423 WARN L193 SmtUtils]: Spent 820.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 202 [2020-10-23 20:21:41,275 WARN L193 SmtUtils]: Spent 825.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 201 [2020-10-23 20:21:42,115 WARN L193 SmtUtils]: Spent 806.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 201 [2020-10-23 20:21:43,008 WARN L193 SmtUtils]: Spent 864.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 202 [2020-10-23 20:21:43,012 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:43,904 WARN L193 SmtUtils]: Spent 869.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 205 [2020-10-23 20:21:44,761 WARN L193 SmtUtils]: Spent 832.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 205 [2020-10-23 20:21:45,623 WARN L193 SmtUtils]: Spent 836.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 205 [2020-10-23 20:21:46,495 WARN L193 SmtUtils]: Spent 841.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 205 [2020-10-23 20:21:46,500 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:47,745 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 263 DAG size of output: 261 [2020-10-23 20:21:48,943 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 263 DAG size of output: 261 [2020-10-23 20:21:48,951 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:50,084 WARN L193 SmtUtils]: Spent 981.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 257 [2020-10-23 20:21:51,257 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 260 DAG size of output: 257 [2020-10-23 20:21:51,267 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:52,455 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 260 DAG size of output: 259 [2020-10-23 20:21:53,551 WARN L193 SmtUtils]: Spent 970.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 259 [2020-10-23 20:21:53,557 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:54,653 WARN L193 SmtUtils]: Spent 984.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 256 [2020-10-23 20:21:55,777 WARN L193 SmtUtils]: Spent 999.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 256 [2020-10-23 20:21:55,786 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:21:56,705 WARN L193 SmtUtils]: Spent 898.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 207 [2020-10-23 20:21:57,606 WARN L193 SmtUtils]: Spent 876.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 207 [2020-10-23 20:21:58,511 WARN L193 SmtUtils]: Spent 874.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 207 [2020-10-23 20:21:59,387 WARN L193 SmtUtils]: Spent 853.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 207 [2020-10-23 20:21:59,391 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:00,521 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 266 DAG size of output: 264 [2020-10-23 20:22:01,677 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 266 DAG size of output: 264 [2020-10-23 20:22:01,690 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:02,558 WARN L193 SmtUtils]: Spent 848.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 205 [2020-10-23 20:22:03,392 WARN L193 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 205 [2020-10-23 20:22:04,247 WARN L193 SmtUtils]: Spent 831.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 205 [2020-10-23 20:22:05,165 WARN L193 SmtUtils]: Spent 894.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 205 [2020-10-23 20:22:05,169 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:06,321 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 265 DAG size of output: 264 [2020-10-23 20:22:07,447 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 265 DAG size of output: 264 [2020-10-23 20:22:07,460 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:08,679 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 267 DAG size of output: 265 [2020-10-23 20:22:09,846 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 267 DAG size of output: 265 [2020-10-23 20:22:09,853 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:10,977 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 265 DAG size of output: 264 [2020-10-23 20:22:12,133 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 265 DAG size of output: 264 [2020-10-23 20:22:12,146 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:22:12,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:22:12,362 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:22:12,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:22:12,519 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:22:12,705 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:22:12,705 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:22:12,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 20:22:12,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:22:12 BoogieIcfgContainer [2020-10-23 20:22:12,754 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:22:12,760 INFO L168 Benchmark]: Toolchain (without parser) took 115547.50 ms. Allocated memory was 156.2 MB in the beginning and 921.7 MB in the end (delta: 765.5 MB). Free memory was 131.5 MB in the beginning and 718.1 MB in the end (delta: -586.6 MB). Peak memory consumption was 180.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:22:12,764 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 156.2 MB. Free memory is still 131.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:22:12,765 INFO L168 Benchmark]: CACSL2BoogieTranslator took 525.17 ms. Allocated memory is still 156.2 MB. Free memory was 130.9 MB in the beginning and 109.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:22:12,765 INFO L168 Benchmark]: Boogie Preprocessor took 125.73 ms. Allocated memory is still 156.2 MB. Free memory was 109.1 MB in the beginning and 137.2 MB in the end (delta: -28.0 MB). Peak memory consumption was 7.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:22:12,766 INFO L168 Benchmark]: RCFGBuilder took 1250.02 ms. Allocated memory was 156.2 MB in the beginning and 196.1 MB in the end (delta: 39.8 MB). Free memory was 137.2 MB in the beginning and 128.9 MB in the end (delta: 8.3 MB). Peak memory consumption was 62.3 MB. Max. memory is 8.0 GB. [2020-10-23 20:22:12,766 INFO L168 Benchmark]: TraceAbstraction took 113635.51 ms. Allocated memory was 196.1 MB in the beginning and 921.7 MB in the end (delta: 725.6 MB). Free memory was 128.9 MB in the beginning and 718.1 MB in the end (delta: -589.2 MB). Peak memory consumption was 136.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:22:12,770 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 156.2 MB. Free memory is still 131.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 525.17 ms. Allocated memory is still 156.2 MB. Free memory was 130.9 MB in the beginning and 109.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 125.73 ms. Allocated memory is still 156.2 MB. Free memory was 109.1 MB in the beginning and 137.2 MB in the end (delta: -28.0 MB). Peak memory consumption was 7.5 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1250.02 ms. Allocated memory was 156.2 MB in the beginning and 196.1 MB in the end (delta: 39.8 MB). Free memory was 137.2 MB in the beginning and 128.9 MB in the end (delta: 8.3 MB). Peak memory consumption was 62.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 113635.51 ms. Allocated memory was 196.1 MB in the beginning and 921.7 MB in the end (delta: 725.6 MB). Free memory was 128.9 MB in the beginning and 718.1 MB in the end (delta: -589.2 MB). Peak memory consumption was 136.4 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: [L49] int waterLevel = 1; [L50] int methaneLevelCritical = 0; [L312] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L516] int pumpRunning = 0; [L517] int systemActive = 1; [L822] int cleanupTimeShifts = 4; [L929] int switchedOnBeforeTS ; [L897] int retValue_acc ; [L898] int tmp ; [L902] FCALL select_helpers() [L903] FCALL select_features() [L904] CALL, EXPR valid_product() [L813] int retValue_acc ; [L816] retValue_acc = 1 [L817] return (retValue_acc); [L904] RET, EXPR valid_product() [L904] tmp = valid_product() [L906] COND TRUE \read(tmp) [L908] FCALL setup() [L909] CALL runTest() [L890] CALL __utac_acc__Specification5_spec__1() [L934] switchedOnBeforeTS = 0 [L890] RET __utac_acc__Specification5_spec__1() [L891] CALL test() [L716] int splverifierCounter ; [L717] int tmp ; [L718] int tmp___0 ; [L719] int tmp___1 ; [L720] int tmp___2 ; [L723] splverifierCounter = 0 [L725] COND TRUE 1 [L727] COND TRUE splverifierCounter < 4 [L733] tmp = __VERIFIER_nondet_int() [L735] COND TRUE \read(tmp) [L737] CALL waterRise() [L67] COND TRUE waterLevel < 2 [L68] waterLevel = waterLevel + 1 [L737] RET waterRise() [L743] tmp___0 = __VERIFIER_nondet_int() [L745] COND FALSE !(\read(tmp___0)) [L753] tmp___2 = __VERIFIER_nondet_int() [L755] COND TRUE \read(tmp___2) [L757] CALL startSystem() [L709] systemActive = 1 [L757] RET startSystem() [L772] CALL timeShift() [L526] CALL __utac_acc__Specification5_spec__2() [L943] CALL, EXPR isPumpRunning() [L627] int retValue_acc ; [L630] retValue_acc = pumpRunning [L631] return (retValue_acc); [L943] RET, EXPR isPumpRunning() [L943] switchedOnBeforeTS = isPumpRunning() [L526] RET __utac_acc__Specification5_spec__2() [L528] COND FALSE !(\read(pumpRunning)) [L535] COND TRUE \read(systemActive) [L537] CALL processEnvironment() [L557] int tmp ; [L560] COND TRUE ! pumpRunning [L562] CALL, EXPR isHighWaterLevel() [L672] int retValue_acc ; [L673] int tmp ; [L674] int tmp___0 ; [L678] CALL, EXPR isHighWaterSensorDry() [L129] int retValue_acc ; [L132] COND FALSE !(waterLevel < 2) [L136] retValue_acc = 0 [L137] return (retValue_acc); [L678] RET, EXPR isHighWaterSensorDry() [L678] tmp = isHighWaterSensorDry() [L680] COND FALSE !(\read(tmp)) [L683] tmp___0 = 1 [L685] retValue_acc = tmp___0 [L686] return (retValue_acc); [L562] RET, EXPR isHighWaterLevel() [L562] tmp = isHighWaterLevel() [L564] COND TRUE \read(tmp) [L566] CALL activatePump() [L591] int tmp ; [L595] CALL, EXPR isMethaneAlarm() [L616] int retValue_acc ; [L620] CALL, EXPR isMethaneLevelCritical() [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); [L620] RET, EXPR isMethaneLevelCritical() [L620] retValue_acc = isMethaneLevelCritical() [L622] return (retValue_acc); [L595] RET, EXPR isMethaneAlarm() [L595] tmp = isMethaneAlarm() [L597] COND FALSE !(\read(tmp)) [L601] CALL activatePump__wrappee__highWaterSensor() [L585] pumpRunning = 1 [L601] RET activatePump__wrappee__highWaterSensor() [L566] RET activatePump() [L537] RET processEnvironment() [L543] CALL __utac_acc__Specification5_spec__3() [L949] int tmp ; [L950] int tmp___0 ; [L954] CALL, EXPR getWaterLevel() [L120] int retValue_acc ; [L123] retValue_acc = waterLevel [L124] return (retValue_acc); [L954] RET, EXPR getWaterLevel() [L954] tmp = getWaterLevel() [L956] COND FALSE !(tmp != 2) [L543] RET __utac_acc__Specification5_spec__3() [L772] RET timeShift() [L725] COND TRUE 1 [L727] COND TRUE splverifierCounter < 4 [L733] tmp = __VERIFIER_nondet_int() [L735] COND FALSE !(\read(tmp)) [L743] tmp___0 = __VERIFIER_nondet_int() [L745] COND FALSE !(\read(tmp___0)) [L753] tmp___2 = __VERIFIER_nondet_int() [L755] COND TRUE \read(tmp___2) [L757] CALL startSystem() [L709] systemActive = 1 [L757] RET startSystem() [L772] CALL timeShift() [L526] CALL __utac_acc__Specification5_spec__2() [L943] CALL, EXPR isPumpRunning() [L627] int retValue_acc ; [L630] retValue_acc = pumpRunning [L631] return (retValue_acc); [L943] RET, EXPR isPumpRunning() [L943] switchedOnBeforeTS = isPumpRunning() [L526] RET __utac_acc__Specification5_spec__2() [L528] COND TRUE \read(pumpRunning) [L530] CALL lowerWaterLevel() [L55] COND TRUE waterLevel > 0 [L56] waterLevel = waterLevel - 1 [L530] RET lowerWaterLevel() [L535] COND TRUE \read(systemActive) [L537] CALL processEnvironment() [L557] int tmp ; [L560] COND FALSE !(! pumpRunning) [L575] FCALL processEnvironment__wrappee__base() [L537] RET processEnvironment() [L543] CALL __utac_acc__Specification5_spec__3() [L949] int tmp ; [L950] int tmp___0 ; [L954] CALL, EXPR getWaterLevel() [L120] int retValue_acc ; [L123] retValue_acc = waterLevel [L124] return (retValue_acc); [L954] RET, EXPR getWaterLevel() [L954] tmp = getWaterLevel() [L956] COND TRUE tmp != 2 [L958] CALL, EXPR isPumpRunning() [L627] int retValue_acc ; [L630] retValue_acc = pumpRunning [L631] return (retValue_acc); [L958] RET, EXPR isPumpRunning() [L958] tmp___0 = isPumpRunning() [L960] COND TRUE \read(tmp___0) [L961] COND TRUE ! switchedOnBeforeTS [L963] CALL __automaton_fail() [L924] CALL reach_error() [L3] __assert_fail("0", "minepump_spec5_product44.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 651 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 113.5s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 55.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2256 SDtfs, 6000 SDslu, 5197 SDs, 0 SdLazy, 10471 SolverSat, 1871 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 461 GetRequests, 277 SyntacticMatches, 2 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1751 ImplicationChecksByTransitivity, 27.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2387occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 1642 StatesRemovedByMinimization, 8 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...