/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 23:46:38,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 23:46:38,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 23:46:38,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 23:46:38,140 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 23:46:38,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 23:46:38,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 23:46:38,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 23:46:38,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 23:46:38,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 23:46:38,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 23:46:38,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 23:46:38,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 23:46:38,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 23:46:38,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 23:46:38,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 23:46:38,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 23:46:38,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 23:46:38,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 23:46:38,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 23:46:38,166 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 23:46:38,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 23:46:38,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 23:46:38,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 23:46:38,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-06 23:46:38,194 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-06 23:46:38,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-06 23:46:38,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-06 23:46:38,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-06 23:46:38,197 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-06 23:46:38,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-06 23:46:38,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-06 23:46:38,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-06 23:46:38,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-06 23:46:38,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-06 23:46:38,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-06 23:46:38,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-06 23:46:38,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-06 23:46:38,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 23:46:38,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 23:46:38,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 23:46:38,207 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-06 23:46:38,220 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 23:46:38,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 23:46:38,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 23:46:38,222 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 23:46:38,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 23:46:38,222 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 23:46:38,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 23:46:38,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 23:46:38,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 23:46:38,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 23:46:38,223 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 23:46:38,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 23:46:38,224 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 23:46:38,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 23:46:38,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 23:46:38,224 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-06 23:46:38,225 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 23:46:38,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 23:46:38,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 23:46:38,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 23:46:38,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-06 23:46:38,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 23:46:38,226 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 23:46:38,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 23:46:38,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 23:46:38,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 23:46:38,647 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 23:46:38,648 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 23:46:38,649 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c [2020-11-06 23:46:38,740 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1431a697/6be03e43e097442bb56ab93fd143016f/FLAGdb8444d2c [2020-11-06 23:46:39,555 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 23:46:39,556 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c [2020-11-06 23:46:39,578 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1431a697/6be03e43e097442bb56ab93fd143016f/FLAGdb8444d2c [2020-11-06 23:46:39,803 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1431a697/6be03e43e097442bb56ab93fd143016f [2020-11-06 23:46:39,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 23:46:39,818 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 23:46:39,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 23:46:39,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 23:46:39,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 23:46:39,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:46:39" (1/1) ... [2020-11-06 23:46:39,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78328dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:39, skipping insertion in model container [2020-11-06 23:46:39,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:46:39" (1/1) ... [2020-11-06 23:46:39,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 23:46:39,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 23:46:40,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 23:46:40,316 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 23:46:40,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 23:46:40,570 INFO L208 MainTranslator]: Completed translation [2020-11-06 23:46:40,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:40 WrapperNode [2020-11-06 23:46:40,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 23:46:40,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 23:46:40,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 23:46:40,573 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 23:46:40,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:40" (1/1) ... [2020-11-06 23:46:40,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:40" (1/1) ... [2020-11-06 23:46:40,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:40" (1/1) ... [2020-11-06 23:46:40,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:40" (1/1) ... [2020-11-06 23:46:40,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:40" (1/1) ... [2020-11-06 23:46:40,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:40" (1/1) ... [2020-11-06 23:46:40,749 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:40" (1/1) ... [2020-11-06 23:46:40,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 23:46:40,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 23:46:40,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 23:46:40,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 23:46:40,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 23:46:40,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 23:46:40,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 23:46:40,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-11-06 23:46:40,862 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 23:46:40,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-11-06 23:46:40,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-11-06 23:46:40,863 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-11-06 23:46:40,863 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-11-06 23:46:40,863 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-11-06 23:46:40,863 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-11-06 23:46:40,863 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-11-06 23:46:40,863 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-11-06 23:46:40,864 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-11-06 23:46:40,864 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-11-06 23:46:40,864 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-11-06 23:46:40,864 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-11-06 23:46:40,864 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 23:46:40,865 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-11-06 23:46:40,865 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-11-06 23:46:40,865 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-11-06 23:46:40,865 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-11-06 23:46:40,865 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-11-06 23:46:40,866 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-11-06 23:46:40,866 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-11-06 23:46:40,866 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-11-06 23:46:40,866 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-11-06 23:46:40,866 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-11-06 23:46:40,867 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-11-06 23:46:40,867 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-11-06 23:46:40,867 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-11-06 23:46:40,867 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-11-06 23:46:40,867 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-11-06 23:46:40,867 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-11-06 23:46:40,868 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-11-06 23:46:40,868 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-11-06 23:46:40,868 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-11-06 23:46:40,868 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-11-06 23:46:40,868 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-11-06 23:46:40,869 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-11-06 23:46:40,869 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-11-06 23:46:40,869 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-11-06 23:46:40,869 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-11-06 23:46:40,869 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 23:46:40,869 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 23:46:40,870 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 23:46:40,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 23:46:40,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 23:46:40,870 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-11-06 23:46:40,870 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-11-06 23:46:40,870 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-11-06 23:46:40,871 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-11-06 23:46:40,871 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-11-06 23:46:40,871 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-06 23:46:40,871 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-06 23:46:40,871 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-11-06 23:46:40,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-06 23:46:40,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-06 23:46:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 23:46:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-06 23:46:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-11-06 23:46:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 23:46:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-11-06 23:46:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-11-06 23:46:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 23:46:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-11-06 23:46:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-11-06 23:46:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-11-06 23:46:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-11-06 23:46:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-11-06 23:46:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-11-06 23:46:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-11-06 23:46:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-11-06 23:46:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-11-06 23:46:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-11-06 23:46:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-11-06 23:46:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-11-06 23:46:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-11-06 23:46:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-11-06 23:46:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-11-06 23:46:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 23:46:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-11-06 23:46:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-11-06 23:46:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-11-06 23:46:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-11-06 23:46:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-11-06 23:46:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-11-06 23:46:40,877 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-11-06 23:46:40,877 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-11-06 23:46:40,877 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-11-06 23:46:40,877 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-11-06 23:46:40,877 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-11-06 23:46:40,877 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-11-06 23:46:40,878 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-11-06 23:46:40,878 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-11-06 23:46:40,878 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-11-06 23:46:40,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 23:46:40,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 23:46:40,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 23:46:42,054 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 23:46:42,055 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-06 23:46:42,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:46:42 BoogieIcfgContainer [2020-11-06 23:46:42,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 23:46:42,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 23:46:42,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 23:46:42,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 23:46:42,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:46:39" (1/3) ... [2020-11-06 23:46:42,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dacde59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:46:42, skipping insertion in model container [2020-11-06 23:46:42,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:40" (2/3) ... [2020-11-06 23:46:42,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dacde59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:46:42, skipping insertion in model container [2020-11-06 23:46:42,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:46:42" (3/3) ... [2020-11-06 23:46:42,067 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product53.cil.c [2020-11-06 23:46:42,084 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-06 23:46:42,089 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-11-06 23:46:42,103 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-06 23:46:42,129 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 23:46:42,129 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 23:46:42,130 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-06 23:46:42,130 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 23:46:42,130 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 23:46:42,130 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 23:46:42,130 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 23:46:42,130 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 23:46:42,156 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states. [2020-11-06 23:46:42,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-11-06 23:46:42,178 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:46:42,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:46:42,179 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 23:46:42,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:46:42,186 INFO L82 PathProgramCache]: Analyzing trace with hash 607492218, now seen corresponding path program 1 times [2020-11-06 23:46:42,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:46:42,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854901037] [2020-11-06 23:46:42,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:46:42,291 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:46:42,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:43,216 WARN L194 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:46:43,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:46:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:43,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:46:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:43,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:46:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:43,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:46:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:43,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:46:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:43,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:46:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:43,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-11-06 23:46:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:43,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:46:43,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854901037] [2020-11-06 23:46:43,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:46:43,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 23:46:43,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018940881] [2020-11-06 23:46:43,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 23:46:43,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:46:43,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 23:46:43,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 23:46:43,475 INFO L87 Difference]: Start difference. First operand 341 states. Second operand 3 states. [2020-11-06 23:46:45,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:46:45,544 INFO L93 Difference]: Finished difference Result 541 states and 644 transitions. [2020-11-06 23:46:45,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 23:46:45,550 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-11-06 23:46:45,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:46:45,567 INFO L225 Difference]: With dead ends: 541 [2020-11-06 23:46:45,567 INFO L226 Difference]: Without dead ends: 330 [2020-11-06 23:46:45,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 23:46:45,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-11-06 23:46:45,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 287. [2020-11-06 23:46:45,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-11-06 23:46:45,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 314 transitions. [2020-11-06 23:46:45,786 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 314 transitions. Word has length 148 [2020-11-06 23:46:45,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:46:45,787 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 314 transitions. [2020-11-06 23:46:45,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 23:46:45,787 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 314 transitions. [2020-11-06 23:46:45,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-11-06 23:46:45,793 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:46:45,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:46:45,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 23:46:45,794 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 23:46:45,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:46:45,795 INFO L82 PathProgramCache]: Analyzing trace with hash -197497099, now seen corresponding path program 1 times [2020-11-06 23:46:45,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:46:45,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938538581] [2020-11-06 23:46:45,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:46:45,800 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:46:45,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:46,258 WARN L194 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:46:46,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:46:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:46,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:46:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:46,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:46:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:46,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:46:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:46,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:46:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:46,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-11-06 23:46:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:46,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-11-06 23:46:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:46,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:46:46,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938538581] [2020-11-06 23:46:46,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:46:46,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 23:46:46,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164674556] [2020-11-06 23:46:46,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 23:46:46,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:46:46,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 23:46:46,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 23:46:46,352 INFO L87 Difference]: Start difference. First operand 287 states and 314 transitions. Second operand 4 states. [2020-11-06 23:46:47,170 WARN L194 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:46:48,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:46:48,667 INFO L93 Difference]: Finished difference Result 455 states and 515 transitions. [2020-11-06 23:46:48,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-06 23:46:48,670 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-11-06 23:46:48,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:46:48,674 INFO L225 Difference]: With dead ends: 455 [2020-11-06 23:46:48,675 INFO L226 Difference]: Without dead ends: 313 [2020-11-06 23:46:48,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 23:46:48,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-11-06 23:46:48,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 277. [2020-11-06 23:46:48,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-11-06 23:46:48,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 301 transitions. [2020-11-06 23:46:48,784 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 301 transitions. Word has length 149 [2020-11-06 23:46:48,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:46:48,785 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 301 transitions. [2020-11-06 23:46:48,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 23:46:48,785 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 301 transitions. [2020-11-06 23:46:48,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-11-06 23:46:48,788 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:46:48,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:46:48,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 23:46:48,789 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 23:46:48,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:46:48,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1054263541, now seen corresponding path program 1 times [2020-11-06 23:46:48,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:46:48,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974332716] [2020-11-06 23:46:48,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:46:48,794 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:46:48,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:49,261 WARN L194 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:46:49,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:46:49,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:49,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:46:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:49,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:46:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:49,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:46:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:49,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:46:49,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:49,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-11-06 23:46:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:49,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-11-06 23:46:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:49,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:46:49,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974332716] [2020-11-06 23:46:49,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:46:49,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-06 23:46:49,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586351501] [2020-11-06 23:46:49,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-06 23:46:49,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:46:49,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-06 23:46:49,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-06 23:46:49,455 INFO L87 Difference]: Start difference. First operand 277 states and 301 transitions. Second operand 9 states. [2020-11-06 23:46:50,193 WARN L194 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:46:50,653 WARN L194 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:46:51,035 WARN L194 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:46:51,411 WARN L194 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:51,832 WARN L194 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:46:52,201 WARN L194 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:54,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:46:54,340 INFO L93 Difference]: Finished difference Result 475 states and 540 transitions. [2020-11-06 23:46:54,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-06 23:46:54,341 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 158 [2020-11-06 23:46:54,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:46:54,345 INFO L225 Difference]: With dead ends: 475 [2020-11-06 23:46:54,347 INFO L226 Difference]: Without dead ends: 313 [2020-11-06 23:46:54,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-11-06 23:46:54,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-11-06 23:46:54,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 277. [2020-11-06 23:46:54,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-11-06 23:46:54,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 300 transitions. [2020-11-06 23:46:54,463 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 300 transitions. Word has length 158 [2020-11-06 23:46:54,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:46:54,464 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 300 transitions. [2020-11-06 23:46:54,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-06 23:46:54,464 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 300 transitions. [2020-11-06 23:46:54,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-11-06 23:46:54,472 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:46:54,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:46:54,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 23:46:54,473 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 23:46:54,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:46:54,474 INFO L82 PathProgramCache]: Analyzing trace with hash -125686888, now seen corresponding path program 1 times [2020-11-06 23:46:54,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:46:54,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424908089] [2020-11-06 23:46:54,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:46:54,478 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:46:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:54,888 WARN L194 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:46:54,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:46:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:54,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:46:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:54,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:46:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:54,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:46:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:54,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:46:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:54,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-11-06 23:46:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:54,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:46:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:54,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:46:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:54,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:46:54,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:54,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-11-06 23:46:54,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:54,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-11-06 23:46:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:55,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:46:55,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424908089] [2020-11-06 23:46:55,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:46:55,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-06 23:46:55,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009036773] [2020-11-06 23:46:55,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-06 23:46:55,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:46:55,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-06 23:46:55,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-06 23:46:55,040 INFO L87 Difference]: Start difference. First operand 277 states and 300 transitions. Second operand 6 states. [2020-11-06 23:46:55,657 WARN L194 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:46:57,385 WARN L194 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:46:58,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:46:58,413 INFO L93 Difference]: Finished difference Result 614 states and 704 transitions. [2020-11-06 23:46:58,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-06 23:46:58,414 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2020-11-06 23:46:58,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:46:58,421 INFO L225 Difference]: With dead ends: 614 [2020-11-06 23:46:58,421 INFO L226 Difference]: Without dead ends: 452 [2020-11-06 23:46:58,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-11-06 23:46:58,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-11-06 23:46:58,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 391. [2020-11-06 23:46:58,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-11-06 23:46:58,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 421 transitions. [2020-11-06 23:46:58,615 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 421 transitions. Word has length 176 [2020-11-06 23:46:58,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:46:58,616 INFO L481 AbstractCegarLoop]: Abstraction has 391 states and 421 transitions. [2020-11-06 23:46:58,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-06 23:46:58,616 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 421 transitions. [2020-11-06 23:46:58,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-11-06 23:46:58,619 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:46:58,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:46:58,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-06 23:46:58,620 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 23:46:58,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:46:58,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1735889120, now seen corresponding path program 1 times [2020-11-06 23:46:58,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:46:58,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950482953] [2020-11-06 23:46:58,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:46:58,624 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:46:58,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:59,046 WARN L194 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:46:59,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:46:59,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:59,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:46:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:59,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:46:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:59,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:46:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:59,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:46:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:59,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-11-06 23:46:59,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:59,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:46:59,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:59,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:46:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:59,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:46:59,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:59,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:46:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:59,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:46:59,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:59,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-11-06 23:46:59,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:59,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-11-06 23:46:59,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:59,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:46:59,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950482953] [2020-11-06 23:46:59,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:46:59,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-06 23:46:59,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760224511] [2020-11-06 23:46:59,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-06 23:46:59,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:46:59,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-06 23:46:59,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-06 23:46:59,255 INFO L87 Difference]: Start difference. First operand 391 states and 421 transitions. Second operand 9 states. [2020-11-06 23:46:59,894 WARN L194 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:47:01,845 WARN L194 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:02,218 WARN L194 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:47:02,637 WARN L194 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:02,981 WARN L194 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:47:03,345 WARN L194 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:47:03,719 WARN L194 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:04,049 WARN L194 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:04,513 WARN L194 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:06,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:47:06,448 INFO L93 Difference]: Finished difference Result 996 states and 1141 transitions. [2020-11-06 23:47:06,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-06 23:47:06,454 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 200 [2020-11-06 23:47:06,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:47:06,459 INFO L225 Difference]: With dead ends: 996 [2020-11-06 23:47:06,459 INFO L226 Difference]: Without dead ends: 720 [2020-11-06 23:47:06,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-11-06 23:47:06,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2020-11-06 23:47:06,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 629. [2020-11-06 23:47:06,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2020-11-06 23:47:06,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 684 transitions. [2020-11-06 23:47:06,750 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 684 transitions. Word has length 200 [2020-11-06 23:47:06,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:47:06,751 INFO L481 AbstractCegarLoop]: Abstraction has 629 states and 684 transitions. [2020-11-06 23:47:06,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-06 23:47:06,752 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 684 transitions. [2020-11-06 23:47:06,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-11-06 23:47:06,756 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:47:06,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:47:06,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-06 23:47:06,757 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 23:47:06,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:47:06,757 INFO L82 PathProgramCache]: Analyzing trace with hash -109531929, now seen corresponding path program 1 times [2020-11-06 23:47:06,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:47:06,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611075192] [2020-11-06 23:47:06,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:47:06,761 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:47:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:07,182 WARN L194 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:47:07,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:47:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:07,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:47:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:07,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:47:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:07,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:47:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:07,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:47:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:07,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:47:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:07,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-11-06 23:47:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:07,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:07,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:07,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:07,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:07,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:47:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:07,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:47:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:07,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-11-06 23:47:07,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:07,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-11-06 23:47:07,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:07,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:47:07,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611075192] [2020-11-06 23:47:07,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:47:07,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 23:47:07,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046513143] [2020-11-06 23:47:07,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 23:47:07,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:47:07,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 23:47:07,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-06 23:47:07,406 INFO L87 Difference]: Start difference. First operand 629 states and 684 transitions. Second operand 10 states. [2020-11-06 23:47:08,108 WARN L194 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:47:09,881 WARN L194 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:10,218 WARN L194 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:47:10,602 WARN L194 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:47:10,950 WARN L194 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:11,320 WARN L194 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:11,713 WARN L194 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:47:12,086 WARN L194 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:12,479 WARN L194 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:14,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:47:14,047 INFO L93 Difference]: Finished difference Result 787 states and 907 transitions. [2020-11-06 23:47:14,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-06 23:47:14,048 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 205 [2020-11-06 23:47:14,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:47:14,054 INFO L225 Difference]: With dead ends: 787 [2020-11-06 23:47:14,054 INFO L226 Difference]: Without dead ends: 783 [2020-11-06 23:47:14,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-11-06 23:47:14,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2020-11-06 23:47:14,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 629. [2020-11-06 23:47:14,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2020-11-06 23:47:14,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 683 transitions. [2020-11-06 23:47:14,344 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 683 transitions. Word has length 205 [2020-11-06 23:47:14,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:47:14,345 INFO L481 AbstractCegarLoop]: Abstraction has 629 states and 683 transitions. [2020-11-06 23:47:14,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 23:47:14,345 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 683 transitions. [2020-11-06 23:47:14,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-11-06 23:47:14,348 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:47:14,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:47:14,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-06 23:47:14,349 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 23:47:14,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:47:14,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1897191115, now seen corresponding path program 1 times [2020-11-06 23:47:14,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:47:14,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093198739] [2020-11-06 23:47:14,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:47:14,354 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:47:14,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,720 WARN L194 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:47:14,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:47:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:47:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:47:14,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:47:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:47:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:47:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-11-06 23:47:14,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:47:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:47:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-11-06 23:47:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-11-06 23:47:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:47:14,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093198739] [2020-11-06 23:47:14,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:47:14,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 23:47:14,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078935289] [2020-11-06 23:47:14,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 23:47:14,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:47:14,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 23:47:14,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-06 23:47:14,948 INFO L87 Difference]: Start difference. First operand 629 states and 683 transitions. Second operand 10 states. [2020-11-06 23:47:16,405 WARN L194 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:16,774 WARN L194 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:47:17,182 WARN L194 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-11-06 23:47:17,560 WARN L194 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:17,927 WARN L194 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:47:18,274 WARN L194 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:20,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:47:20,086 INFO L93 Difference]: Finished difference Result 1307 states and 1497 transitions. [2020-11-06 23:47:20,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-06 23:47:20,087 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 206 [2020-11-06 23:47:20,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:47:20,093 INFO L225 Difference]: With dead ends: 1307 [2020-11-06 23:47:20,093 INFO L226 Difference]: Without dead ends: 793 [2020-11-06 23:47:20,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-11-06 23:47:20,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2020-11-06 23:47:20,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 645. [2020-11-06 23:47:20,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2020-11-06 23:47:20,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 699 transitions. [2020-11-06 23:47:20,432 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 699 transitions. Word has length 206 [2020-11-06 23:47:20,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:47:20,433 INFO L481 AbstractCegarLoop]: Abstraction has 645 states and 699 transitions. [2020-11-06 23:47:20,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 23:47:20,433 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 699 transitions. [2020-11-06 23:47:20,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-11-06 23:47:20,436 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:47:20,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:47:20,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-06 23:47:20,437 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 23:47:20,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:47:20,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1834862379, now seen corresponding path program 1 times [2020-11-06 23:47:20,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:47:20,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031797552] [2020-11-06 23:47:20,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:47:20,444 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:47:20,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:20,828 WARN L194 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:47:20,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:47:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:20,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:47:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:20,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:47:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:20,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:47:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:20,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:47:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:20,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:47:20,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:20,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-11-06 23:47:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:20,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:20,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:20,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:20,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:20,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:47:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:21,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:47:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:21,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-11-06 23:47:21,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:21,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-11-06 23:47:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:21,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:47:21,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031797552] [2020-11-06 23:47:21,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:47:21,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-11-06 23:47:21,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299873283] [2020-11-06 23:47:21,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-06 23:47:21,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:47:21,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-06 23:47:21,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-11-06 23:47:21,090 INFO L87 Difference]: Start difference. First operand 645 states and 699 transitions. Second operand 13 states. [2020-11-06 23:47:21,855 WARN L194 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:22,231 WARN L194 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:47:22,614 WARN L194 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:23,015 WARN L194 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:47:23,382 WARN L194 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:24,435 WARN L194 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:24,833 WARN L194 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:47:25,245 WARN L194 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:25,663 WARN L194 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:47:26,041 WARN L194 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:28,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:47:28,363 INFO L93 Difference]: Finished difference Result 1345 states and 1553 transitions. [2020-11-06 23:47:28,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-06 23:47:28,364 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 206 [2020-11-06 23:47:28,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:47:28,370 INFO L225 Difference]: With dead ends: 1345 [2020-11-06 23:47:28,370 INFO L226 Difference]: Without dead ends: 815 [2020-11-06 23:47:28,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-11-06 23:47:28,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2020-11-06 23:47:28,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 657. [2020-11-06 23:47:28,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 657 states. [2020-11-06 23:47:28,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 711 transitions. [2020-11-06 23:47:28,678 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 711 transitions. Word has length 206 [2020-11-06 23:47:28,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:47:28,678 INFO L481 AbstractCegarLoop]: Abstraction has 657 states and 711 transitions. [2020-11-06 23:47:28,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-06 23:47:28,679 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 711 transitions. [2020-11-06 23:47:28,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-11-06 23:47:28,681 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:47:28,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:47:28,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-06 23:47:28,682 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 23:47:28,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:47:28,682 INFO L82 PathProgramCache]: Analyzing trace with hash -320199000, now seen corresponding path program 1 times [2020-11-06 23:47:28,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:47:28,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357299813] [2020-11-06 23:47:28,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:47:28,686 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:47:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:29,072 WARN L194 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:47:29,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:47:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:29,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:47:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:29,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:47:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:29,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:47:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:29,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:47:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:29,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:47:29,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:29,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-11-06 23:47:29,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:29,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:29,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:29,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:29,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:47:29,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:29,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:47:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:29,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-11-06 23:47:29,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:29,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-11-06 23:47:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:29,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:47:29,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357299813] [2020-11-06 23:47:29,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:47:29,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-06 23:47:29,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663330611] [2020-11-06 23:47:29,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-06 23:47:29,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:47:29,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-06 23:47:29,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-06 23:47:29,300 INFO L87 Difference]: Start difference. First operand 657 states and 711 transitions. Second operand 7 states. [2020-11-06 23:47:30,003 WARN L194 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:47:30,759 WARN L194 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:47:34,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:47:34,084 INFO L93 Difference]: Finished difference Result 1811 states and 2144 transitions. [2020-11-06 23:47:34,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-06 23:47:34,085 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 206 [2020-11-06 23:47:34,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:47:34,093 INFO L225 Difference]: With dead ends: 1811 [2020-11-06 23:47:34,093 INFO L226 Difference]: Without dead ends: 1269 [2020-11-06 23:47:34,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-11-06 23:47:34,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2020-11-06 23:47:34,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1095. [2020-11-06 23:47:34,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1095 states. [2020-11-06 23:47:34,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1227 transitions. [2020-11-06 23:47:34,552 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1227 transitions. Word has length 206 [2020-11-06 23:47:34,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:47:34,552 INFO L481 AbstractCegarLoop]: Abstraction has 1095 states and 1227 transitions. [2020-11-06 23:47:34,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-06 23:47:34,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1227 transitions. [2020-11-06 23:47:34,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-11-06 23:47:34,555 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:47:34,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:47:34,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-06 23:47:34,556 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 23:47:34,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:47:34,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1130921074, now seen corresponding path program 1 times [2020-11-06 23:47:34,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:47:34,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772888100] [2020-11-06 23:47:34,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:47:34,560 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:47:34,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 23:47:34,630 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 23:47:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 23:47:34,700 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 23:47:34,975 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-06 23:47:34,975 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 23:47:34,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-06 23:47:35,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:47:35 BoogieIcfgContainer [2020-11-06 23:47:35,005 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 23:47:35,007 INFO L168 Benchmark]: Toolchain (without parser) took 55193.76 ms. Allocated memory was 151.0 MB in the beginning and 685.8 MB in the end (delta: 534.8 MB). Free memory was 126.4 MB in the beginning and 353.2 MB in the end (delta: -226.8 MB). Peak memory consumption was 308.9 MB. Max. memory is 8.0 GB. [2020-11-06 23:47:35,008 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 126.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 23:47:35,009 INFO L168 Benchmark]: CACSL2BoogieTranslator took 750.05 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 103.9 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-06 23:47:35,009 INFO L168 Benchmark]: Boogie Preprocessor took 190.07 ms. Allocated memory is still 151.0 MB. Free memory was 103.9 MB in the beginning and 132.1 MB in the end (delta: -28.2 MB). Peak memory consumption was 7.3 MB. Max. memory is 8.0 GB. [2020-11-06 23:47:35,010 INFO L168 Benchmark]: RCFGBuilder took 1291.58 ms. Allocated memory is still 151.0 MB. Free memory was 132.1 MB in the beginning and 84.1 MB in the end (delta: 48.0 MB). Peak memory consumption was 63.7 MB. Max. memory is 8.0 GB. [2020-11-06 23:47:35,011 INFO L168 Benchmark]: TraceAbstraction took 52946.14 ms. Allocated memory was 151.0 MB in the beginning and 685.8 MB in the end (delta: 534.8 MB). Free memory was 83.6 MB in the beginning and 353.2 MB in the end (delta: -269.6 MB). Peak memory consumption was 265.2 MB. Max. memory is 8.0 GB. [2020-11-06 23:47:35,014 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 126.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 750.05 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 103.9 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 190.07 ms. Allocated memory is still 151.0 MB. Free memory was 103.9 MB in the beginning and 132.1 MB in the end (delta: -28.2 MB). Peak memory consumption was 7.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1291.58 ms. Allocated memory is still 151.0 MB. Free memory was 132.1 MB in the beginning and 84.1 MB in the end (delta: 48.0 MB). Peak memory consumption was 63.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 52946.14 ms. Allocated memory was 151.0 MB in the beginning and 685.8 MB in the end (delta: 534.8 MB). Free memory was 83.6 MB in the beginning and 353.2 MB in the end (delta: -269.6 MB). Peak memory consumption was 265.2 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: [L249] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L446] int cleanupTimeShifts = 4; [L556] int pumpRunning = 0; [L557] int systemActive = 1; [L880] int waterLevel = 1; [L881] int methaneLevelCritical = 0; [L527] int retValue_acc ; [L528] int tmp ; [L532] FCALL select_helpers() [L533] FCALL select_features() [L534] CALL, EXPR valid_product() [L870] int retValue_acc ; [L873] retValue_acc = 1 [L874] return (retValue_acc); [L534] RET, EXPR valid_product() [L534] tmp = valid_product() [L536] COND TRUE \read(tmp) [L538] FCALL setup() [L539] CALL runTest() [L518] CALL test() [L780] int splverifierCounter ; [L781] int tmp ; [L782] int tmp___0 ; [L783] int tmp___1 ; [L784] int tmp___2 ; [L787] splverifierCounter = 0 [L789] COND TRUE 1 [L791] COND TRUE splverifierCounter < 4 [L797] tmp = __VERIFIER_nondet_int() [L799] COND TRUE \read(tmp) [L801] CALL waterRise() [L898] COND TRUE waterLevel < 2 [L899] waterLevel = waterLevel + 1 [L801] RET waterRise() [L807] tmp___0 = __VERIFIER_nondet_int() [L809] COND TRUE \read(tmp___0) [L811] CALL changeMethaneLevel() [L910] COND FALSE !(\read(methaneLevelCritical)) [L913] methaneLevelCritical = 1 [L811] RET changeMethaneLevel() [L817] tmp___2 = __VERIFIER_nondet_int() [L819] COND TRUE \read(tmp___2) [L832] CALL timeShift() [L563] COND FALSE !(\read(pumpRunning)) [L570] COND TRUE \read(systemActive) [L572] CALL processEnvironment() [L644] int tmp ; [L647] COND FALSE !(\read(pumpRunning)) [L662] CALL processEnvironment__wrappee__lowWaterSensor() [L618] int tmp ; [L621] COND FALSE !(\read(pumpRunning)) [L636] CALL processEnvironment__wrappee__highWaterSensor() [L592] int tmp ; [L595] COND TRUE ! pumpRunning [L597] CALL, EXPR isHighWaterLevel() [L741] int retValue_acc ; [L742] int tmp ; [L743] int tmp___0 ; [L747] CALL, EXPR isHighWaterSensorDry() [L960] int retValue_acc ; [L963] COND FALSE !(waterLevel < 2) [L967] retValue_acc = 0 [L968] return (retValue_acc); [L747] RET, EXPR isHighWaterSensorDry() [L747] tmp = isHighWaterSensorDry() [L749] COND FALSE !(\read(tmp)) [L752] tmp___0 = 1 [L754] retValue_acc = tmp___0 [L755] return (retValue_acc); [L597] RET, EXPR isHighWaterLevel() [L597] tmp = isHighWaterLevel() [L599] COND TRUE \read(tmp) [L601] CALL activatePump() [L672] pumpRunning = 1 [L601] RET activatePump() [L636] RET processEnvironment__wrappee__highWaterSensor() [L662] RET processEnvironment__wrappee__lowWaterSensor() [L572] RET processEnvironment() [L578] CALL __utac_acc__Specification1_spec__1() [L46] int tmp ; [L47] int tmp___0 ; [L51] CALL, EXPR isMethaneLevelCritical() [L919] int retValue_acc ; [L922] retValue_acc = methaneLevelCritical [L923] return (retValue_acc); [L51] RET, EXPR isMethaneLevelCritical() [L51] tmp = isMethaneLevelCritical() [L53] COND TRUE \read(tmp) [L55] CALL, EXPR isPumpRunning() [L696] int retValue_acc ; [L699] retValue_acc = pumpRunning [L700] return (retValue_acc); [L55] RET, EXPR isPumpRunning() [L55] tmp___0 = isPumpRunning() [L57] COND TRUE \read(tmp___0) [L59] CALL __automaton_fail() [L75] CALL reach_error() [L3] __assert_fail("0", "minepump_spec1_product53.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 662 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 52.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 43.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2444 SDtfs, 4205 SDslu, 4077 SDs, 0 SdLazy, 8735 SolverSat, 1282 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 366 GetRequests, 247 SyntacticMatches, 5 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 19.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1095occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 901 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...