/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_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 23:46:51,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 23:46:51,686 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 23:46:51,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 23:46:51,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 23:46:51,722 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 23:46:51,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 23:46:51,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 23:46:51,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 23:46:51,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 23:46:51,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 23:46:51,732 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 23:46:51,732 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 23:46:51,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 23:46:51,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 23:46:51,740 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 23:46:51,741 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 23:46:51,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 23:46:51,754 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 23:46:51,759 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 23:46:51,761 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 23:46:51,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 23:46:51,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 23:46:51,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 23:46:51,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-06 23:46:51,771 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-06 23:46:51,771 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-06 23:46:51,772 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-06 23:46:51,772 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-06 23:46:51,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-06 23:46:51,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-06 23:46:51,775 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-06 23:46:51,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-06 23:46:51,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-06 23:46:51,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-06 23:46:51,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-06 23:46:51,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-06 23:46:51,779 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-06 23:46:51,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 23:46:51,780 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 23:46:51,781 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 23:46:51,782 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 23:46:51,793 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 23:46:51,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 23:46:51,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 23:46:51,795 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 23:46:51,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 23:46:51,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 23:46:51,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 23:46:51,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 23:46:51,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 23:46:51,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 23:46:51,797 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 23:46:51,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 23:46:51,797 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 23:46:51,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 23:46:51,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 23:46:51,798 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-06 23:46:51,798 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 23:46:51,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 23:46:51,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 23:46:51,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 23:46:51,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-06 23:46:51,799 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 23:46:51,799 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 23:46:52,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 23:46:52,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 23:46:52,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 23:46:52,270 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 23:46:52,271 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 23:46:52,272 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c [2020-11-06 23:46:52,360 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8651f8b7/f017a9745ded43f1a2e9726779d9f3e7/FLAG4be1ae2d7 [2020-11-06 23:46:53,083 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 23:46:53,087 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c [2020-11-06 23:46:53,115 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8651f8b7/f017a9745ded43f1a2e9726779d9f3e7/FLAG4be1ae2d7 [2020-11-06 23:46:53,359 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8651f8b7/f017a9745ded43f1a2e9726779d9f3e7 [2020-11-06 23:46:53,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 23:46:53,374 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 23:46:53,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 23:46:53,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 23:46:53,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 23:46:53,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:46:53" (1/1) ... [2020-11-06 23:46:53,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77ae7ff9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:53, skipping insertion in model container [2020-11-06 23:46:53,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:46:53" (1/1) ... [2020-11-06 23:46:53,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 23:46:53,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 23:46:53,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 23:46:53,848 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 23:46:53,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 23:46:54,029 INFO L208 MainTranslator]: Completed translation [2020-11-06 23:46:54,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:54 WrapperNode [2020-11-06 23:46:54,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 23:46:54,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 23:46:54,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 23:46:54,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 23:46:54,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:54" (1/1) ... [2020-11-06 23:46:54,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:54" (1/1) ... [2020-11-06 23:46:54,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:54" (1/1) ... [2020-11-06 23:46:54,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:54" (1/1) ... [2020-11-06 23:46:54,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:54" (1/1) ... [2020-11-06 23:46:54,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:54" (1/1) ... [2020-11-06 23:46:54,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:54" (1/1) ... [2020-11-06 23:46:54,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 23:46:54,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 23:46:54,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 23:46:54,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 23:46:54,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:54" (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 23:46:54,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 23:46:54,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 23:46:54,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-11-06 23:46:54,286 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 23:46:54,286 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-11-06 23:46:54,286 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-11-06 23:46:54,287 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-11-06 23:46:54,287 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-11-06 23:46:54,287 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 23:46:54,287 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-11-06 23:46:54,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-11-06 23:46:54,287 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-11-06 23:46:54,288 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-11-06 23:46:54,288 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-11-06 23:46:54,288 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-11-06 23:46:54,288 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-11-06 23:46:54,288 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-11-06 23:46:54,288 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-11-06 23:46:54,289 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-11-06 23:46:54,289 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-11-06 23:46:54,289 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-11-06 23:46:54,289 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-11-06 23:46:54,289 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-11-06 23:46:54,290 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-11-06 23:46:54,290 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-11-06 23:46:54,290 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-11-06 23:46:54,290 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-11-06 23:46:54,290 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-11-06 23:46:54,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-11-06 23:46:54,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-11-06 23:46:54,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-11-06 23:46:54,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-11-06 23:46:54,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-11-06 23:46:54,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-11-06 23:46:54,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-11-06 23:46:54,292 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-11-06 23:46:54,292 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-11-06 23:46:54,292 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-11-06 23:46:54,292 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-11-06 23:46:54,292 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-11-06 23:46:54,292 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-11-06 23:46:54,293 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-11-06 23:46:54,293 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-11-06 23:46:54,293 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 23:46:54,293 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 23:46:54,293 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 23:46:54,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 23:46:54,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 23:46:54,294 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-11-06 23:46:54,294 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-11-06 23:46:54,294 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-11-06 23:46:54,294 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-11-06 23:46:54,294 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-11-06 23:46:54,294 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-11-06 23:46:54,295 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-11-06 23:46:54,295 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-11-06 23:46:54,295 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-11-06 23:46:54,295 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-11-06 23:46:54,295 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-11-06 23:46:54,295 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-11-06 23:46:54,295 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-11-06 23:46:54,296 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 23:46:54,296 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-11-06 23:46:54,296 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-11-06 23:46:54,296 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-11-06 23:46:54,296 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-11-06 23:46:54,296 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-11-06 23:46:54,297 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-11-06 23:46:54,297 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-11-06 23:46:54,297 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-11-06 23:46:54,297 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-11-06 23:46:54,297 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-11-06 23:46:54,297 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-11-06 23:46:54,297 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-11-06 23:46:54,298 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-11-06 23:46:54,298 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-11-06 23:46:54,298 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-11-06 23:46:54,298 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-11-06 23:46:54,298 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-11-06 23:46:54,298 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-11-06 23:46:54,299 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-11-06 23:46:54,299 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-06 23:46:54,299 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-06 23:46:54,299 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-11-06 23:46:54,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-06 23:46:54,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-06 23:46:54,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 23:46:54,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-06 23:46:54,300 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-11-06 23:46:54,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 23:46:54,300 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-11-06 23:46:54,300 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-11-06 23:46:54,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 23:46:54,301 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-11-06 23:46:54,301 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-11-06 23:46:54,301 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-11-06 23:46:54,301 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-11-06 23:46:54,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 23:46:54,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 23:46:54,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 23:46:55,933 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 23:46:55,934 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-06 23:46:55,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:46:55 BoogieIcfgContainer [2020-11-06 23:46:55,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 23:46:55,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 23:46:55,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 23:46:55,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 23:46:55,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:46:53" (1/3) ... [2020-11-06 23:46:55,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83b3fe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:46:55, skipping insertion in model container [2020-11-06 23:46:55,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:54" (2/3) ... [2020-11-06 23:46:55,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83b3fe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:46:55, skipping insertion in model container [2020-11-06 23:46:55,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:46:55" (3/3) ... [2020-11-06 23:46:55,946 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product54.cil.c [2020-11-06 23:46:55,962 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-06 23:46:55,966 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-11-06 23:46:55,979 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-06 23:46:56,003 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 23:46:56,004 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 23:46:56,004 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-06 23:46:56,004 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 23:46:56,004 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 23:46:56,005 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 23:46:56,005 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 23:46:56,005 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 23:46:56,028 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states. [2020-11-06 23:46:56,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-11-06 23:46:56,048 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:46:56,049 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 23:46:56,050 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 23:46:56,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:46:56,056 INFO L82 PathProgramCache]: Analyzing trace with hash 750238097, now seen corresponding path program 1 times [2020-11-06 23:46:56,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:46:56,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259014690] [2020-11-06 23:46:56,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:46:56,144 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:46:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:57,187 WARN L194 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:46:57,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:46:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:57,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:46:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:57,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:46:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:57,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:46:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:57,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:46:57,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:57,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:46:57,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:57,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-11-06 23:46:57,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:57,372 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 23:46:57,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259014690] [2020-11-06 23:46:57,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:46:57,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 23:46:57,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830476606] [2020-11-06 23:46:57,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 23:46:57,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:46:57,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 23:46:57,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 23:46:57,405 INFO L87 Difference]: Start difference. First operand 345 states. Second operand 3 states. [2020-11-06 23:46:59,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:46:59,619 INFO L93 Difference]: Finished difference Result 550 states and 654 transitions. [2020-11-06 23:46:59,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 23:46:59,621 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-11-06 23:46:59,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:46:59,639 INFO L225 Difference]: With dead ends: 550 [2020-11-06 23:46:59,639 INFO L226 Difference]: Without dead ends: 335 [2020-11-06 23:46:59,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 23:46:59,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-11-06 23:46:59,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 291. [2020-11-06 23:46:59,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-11-06 23:46:59,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 318 transitions. [2020-11-06 23:46:59,833 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 318 transitions. Word has length 148 [2020-11-06 23:46:59,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:46:59,834 INFO L481 AbstractCegarLoop]: Abstraction has 291 states and 318 transitions. [2020-11-06 23:46:59,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 23:46:59,834 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 318 transitions. [2020-11-06 23:46:59,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-11-06 23:46:59,839 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:46:59,840 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 23:46:59,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 23:46:59,840 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 23:46:59,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:46:59,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1617565100, now seen corresponding path program 1 times [2020-11-06 23:46:59,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:46:59,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577930108] [2020-11-06 23:46:59,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:46:59,846 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:46:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:00,333 WARN L194 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:47:00,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:47:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:00,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:47:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:00,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:47:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:00,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:47:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:00,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:47:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:00,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-11-06 23:47:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:00,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-11-06 23:47:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:00,450 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 23:47:00,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577930108] [2020-11-06 23:47:00,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:47:00,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 23:47:00,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328138779] [2020-11-06 23:47:00,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 23:47:00,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:47:00,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 23:47:00,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 23:47:00,456 INFO L87 Difference]: Start difference. First operand 291 states and 318 transitions. Second operand 4 states. [2020-11-06 23:47:01,278 WARN L194 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:02,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:47:02,738 INFO L93 Difference]: Finished difference Result 460 states and 521 transitions. [2020-11-06 23:47:02,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-06 23:47:02,739 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-11-06 23:47:02,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:47:02,746 INFO L225 Difference]: With dead ends: 460 [2020-11-06 23:47:02,749 INFO L226 Difference]: Without dead ends: 318 [2020-11-06 23:47:02,752 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 23:47:02,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-11-06 23:47:02,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 281. [2020-11-06 23:47:02,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-11-06 23:47:02,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 305 transitions. [2020-11-06 23:47:02,898 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 305 transitions. Word has length 149 [2020-11-06 23:47:02,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:47:02,900 INFO L481 AbstractCegarLoop]: Abstraction has 281 states and 305 transitions. [2020-11-06 23:47:02,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 23:47:02,901 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 305 transitions. [2020-11-06 23:47:02,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-11-06 23:47:02,905 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:47:02,906 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] [2020-11-06 23:47:02,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 23:47:02,907 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 23:47:02,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:47:02,907 INFO L82 PathProgramCache]: Analyzing trace with hash 843521329, now seen corresponding path program 1 times [2020-11-06 23:47:02,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:47:02,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194314944] [2020-11-06 23:47:02,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:47:02,912 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:47:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:03,533 WARN L194 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:47:03,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:47:03,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:03,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:47:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:03,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:47:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:03,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:47:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:03,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:47:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:03,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-11-06 23:47:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:03,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-11-06 23:47:03,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:03,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-06 23:47:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:03,764 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 23:47:03,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194314944] [2020-11-06 23:47:03,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:47:03,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 23:47:03,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959279762] [2020-11-06 23:47:03,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 23:47:03,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:47:03,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 23:47:03,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-06 23:47:03,769 INFO L87 Difference]: Start difference. First operand 281 states and 305 transitions. Second operand 10 states. [2020-11-06 23:47:04,415 WARN L194 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:47:04,891 WARN L194 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:47:05,278 WARN L194 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-11-06 23:47:05,710 WARN L194 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:06,097 WARN L194 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:47:06,475 WARN L194 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:08,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:47:08,805 INFO L93 Difference]: Finished difference Result 506 states and 583 transitions. [2020-11-06 23:47:08,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-06 23:47:08,809 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 162 [2020-11-06 23:47:08,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:47:08,834 INFO L225 Difference]: With dead ends: 506 [2020-11-06 23:47:08,834 INFO L226 Difference]: Without dead ends: 340 [2020-11-06 23:47:08,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-11-06 23:47:08,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-11-06 23:47:08,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 281. [2020-11-06 23:47:08,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-11-06 23:47:08,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 304 transitions. [2020-11-06 23:47:08,971 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 304 transitions. Word has length 162 [2020-11-06 23:47:08,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:47:08,972 INFO L481 AbstractCegarLoop]: Abstraction has 281 states and 304 transitions. [2020-11-06 23:47:08,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 23:47:08,972 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 304 transitions. [2020-11-06 23:47:08,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-11-06 23:47:08,979 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:47:08,980 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] [2020-11-06 23:47:08,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 23:47:08,980 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 23:47:08,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:47:08,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1781222494, now seen corresponding path program 1 times [2020-11-06 23:47:08,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:47:08,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593512884] [2020-11-06 23:47:08,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:47:08,988 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:47:09,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:09,412 WARN L194 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:47:09,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:47:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:09,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:47:09,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:09,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:47:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:09,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:47:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:09,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:47:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:09,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-11-06 23:47:09,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:09,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-11-06 23:47:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:09,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:09,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:09,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:09,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-11-06 23:47:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:09,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-06 23:47:09,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:09,611 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 23:47:09,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593512884] [2020-11-06 23:47:09,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:47:09,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-06 23:47:09,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139158127] [2020-11-06 23:47:09,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-06 23:47:09,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:47:09,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-06 23:47:09,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-06 23:47:09,614 INFO L87 Difference]: Start difference. First operand 281 states and 304 transitions. Second operand 7 states. [2020-11-06 23:47:10,358 WARN L194 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:47:12,395 WARN L194 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:13,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:47:13,757 INFO L93 Difference]: Finished difference Result 694 states and 822 transitions. [2020-11-06 23:47:13,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-06 23:47:13,758 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 180 [2020-11-06 23:47:13,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:47:13,764 INFO L225 Difference]: With dead ends: 694 [2020-11-06 23:47:13,764 INFO L226 Difference]: Without dead ends: 528 [2020-11-06 23:47:13,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-11-06 23:47:13,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2020-11-06 23:47:13,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 399. [2020-11-06 23:47:13,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2020-11-06 23:47:13,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 429 transitions. [2020-11-06 23:47:13,959 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 429 transitions. Word has length 180 [2020-11-06 23:47:13,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:47:13,960 INFO L481 AbstractCegarLoop]: Abstraction has 399 states and 429 transitions. [2020-11-06 23:47:13,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-06 23:47:13,960 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 429 transitions. [2020-11-06 23:47:13,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-11-06 23:47:13,963 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:47:13,964 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] [2020-11-06 23:47:13,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-06 23:47:13,964 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 23:47:13,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:47:13,965 INFO L82 PathProgramCache]: Analyzing trace with hash 841598671, now seen corresponding path program 1 times [2020-11-06 23:47:13,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:47:13,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743973120] [2020-11-06 23:47:13,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:47:13,969 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:47:13,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,402 WARN L194 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:47:14,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:47:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:47:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:47:14,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:47:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:47:14,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-11-06 23:47:14,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-11-06 23:47:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:14,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:14,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:47:14,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:47:14,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-11-06 23:47:14,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-11-06 23:47:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:14,652 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 23:47:14,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743973120] [2020-11-06 23:47:14,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:47:14,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 23:47:14,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875626616] [2020-11-06 23:47:14,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 23:47:14,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:47:14,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 23:47:14,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-06 23:47:14,657 INFO L87 Difference]: Start difference. First operand 399 states and 429 transitions. Second operand 10 states. [2020-11-06 23:47:15,313 WARN L194 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:47:17,345 WARN L194 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:17,729 WARN L194 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:47:18,123 WARN L194 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:18,488 WARN L194 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:47:18,865 WARN L194 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:47:19,227 WARN L194 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:19,597 WARN L194 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:20,106 WARN L194 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:22,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:47:22,509 INFO L93 Difference]: Finished difference Result 1155 states and 1383 transitions. [2020-11-06 23:47:22,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-06 23:47:22,510 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 204 [2020-11-06 23:47:22,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:47:22,517 INFO L225 Difference]: With dead ends: 1155 [2020-11-06 23:47:22,517 INFO L226 Difference]: Without dead ends: 871 [2020-11-06 23:47:22,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-11-06 23:47:22,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2020-11-06 23:47:22,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 645. [2020-11-06 23:47:22,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2020-11-06 23:47:22,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 700 transitions. [2020-11-06 23:47:22,794 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 700 transitions. Word has length 204 [2020-11-06 23:47:22,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:47:22,795 INFO L481 AbstractCegarLoop]: Abstraction has 645 states and 700 transitions. [2020-11-06 23:47:22,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 23:47:22,795 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 700 transitions. [2020-11-06 23:47:22,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-11-06 23:47:22,798 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:47:22,799 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] [2020-11-06 23:47:22,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-06 23:47:22,799 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 23:47:22,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:47:22,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1054712920, now seen corresponding path program 1 times [2020-11-06 23:47:22,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:47:22,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056321287] [2020-11-06 23:47:22,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:47:22,803 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:47:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:23,194 WARN L194 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:47:23,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:47:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:23,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:47:23,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:23,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:47:23,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:23,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:47:23,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:23,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:47:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:23,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:47:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:23,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-11-06 23:47:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:23,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-11-06 23:47:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:23,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:23,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:23,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:23,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:23,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:47:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:23,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:47:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:23,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-11-06 23:47:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:23,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-11-06 23:47:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:23,438 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 23:47:23,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056321287] [2020-11-06 23:47:23,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:47:23,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-06 23:47:23,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102130013] [2020-11-06 23:47:23,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-06 23:47:23,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:47:23,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-06 23:47:23,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-11-06 23:47:23,442 INFO L87 Difference]: Start difference. First operand 645 states and 700 transitions. Second operand 11 states. [2020-11-06 23:47:24,121 WARN L194 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:47:26,135 WARN L194 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:26,475 WARN L194 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:47:26,881 WARN L194 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:47:27,243 WARN L194 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:27,642 WARN L194 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:28,075 WARN L194 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:47:28,453 WARN L194 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:28,911 WARN L194 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:31,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:47:31,327 INFO L93 Difference]: Finished difference Result 1007 states and 1235 transitions. [2020-11-06 23:47:31,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-06 23:47:31,327 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 209 [2020-11-06 23:47:31,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:47:31,335 INFO L225 Difference]: With dead ends: 1007 [2020-11-06 23:47:31,335 INFO L226 Difference]: Without dead ends: 1003 [2020-11-06 23:47:31,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930 [2020-11-06 23:47:31,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2020-11-06 23:47:31,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 645. [2020-11-06 23:47:31,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2020-11-06 23:47:31,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 699 transitions. [2020-11-06 23:47:31,611 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 699 transitions. Word has length 209 [2020-11-06 23:47:31,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:47:31,611 INFO L481 AbstractCegarLoop]: Abstraction has 645 states and 699 transitions. [2020-11-06 23:47:31,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-06 23:47:31,612 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 699 transitions. [2020-11-06 23:47:31,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-11-06 23:47:31,615 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:47:31,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:47:31,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-06 23:47:31,616 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 23:47:31,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:47:31,617 INFO L82 PathProgramCache]: Analyzing trace with hash -2074053688, now seen corresponding path program 1 times [2020-11-06 23:47:31,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:47:31,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570518577] [2020-11-06 23:47:31,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:47:31,620 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:47:31,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:31,968 WARN L194 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:47:31,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:47:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:32,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:47:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:32,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:47:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:32,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:47:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:32,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:47:32,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:32,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:47:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:32,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-11-06 23:47:32,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:32,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-11-06 23:47:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:32,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:32,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:32,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:32,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:32,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:47:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:32,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:47:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:32,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-11-06 23:47:32,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:32,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-11-06 23:47:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:32,214 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 23:47:32,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570518577] [2020-11-06 23:47:32,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:47:32,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-06 23:47:32,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204605747] [2020-11-06 23:47:32,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-06 23:47:32,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:47:32,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-06 23:47:32,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-11-06 23:47:32,217 INFO L87 Difference]: Start difference. First operand 645 states and 699 transitions. Second operand 11 states. [2020-11-06 23:47:33,898 WARN L194 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:34,360 WARN L194 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:47:34,785 WARN L194 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-11-06 23:47:35,181 WARN L194 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:35,592 WARN L194 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:47:35,975 WARN L194 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:38,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:47:38,513 INFO L93 Difference]: Finished difference Result 1543 states and 1850 transitions. [2020-11-06 23:47:38,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-06 23:47:38,514 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 210 [2020-11-06 23:47:38,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:47:38,521 INFO L225 Difference]: With dead ends: 1543 [2020-11-06 23:47:38,522 INFO L226 Difference]: Without dead ends: 1013 [2020-11-06 23:47:38,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-11-06 23:47:38,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2020-11-06 23:47:38,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 661. [2020-11-06 23:47:38,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 661 states. [2020-11-06 23:47:38,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 715 transitions. [2020-11-06 23:47:38,790 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 715 transitions. Word has length 210 [2020-11-06 23:47:38,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:47:38,790 INFO L481 AbstractCegarLoop]: Abstraction has 661 states and 715 transitions. [2020-11-06 23:47:38,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-06 23:47:38,791 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 715 transitions. [2020-11-06 23:47:38,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-11-06 23:47:38,795 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:47:38,795 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:47:38,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-06 23:47:38,795 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 23:47:38,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:47:38,796 INFO L82 PathProgramCache]: Analyzing trace with hash -2136382424, now seen corresponding path program 1 times [2020-11-06 23:47:38,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:47:38,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863786292] [2020-11-06 23:47:38,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:47:38,799 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:47:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:39,177 WARN L194 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:47:39,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:47:39,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:39,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:47:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:39,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:47:39,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:39,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:47:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:39,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:47:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:39,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:47:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:39,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-11-06 23:47:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:39,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-11-06 23:47:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:39,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:39,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:39,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:39,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:47:39,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:39,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:47:39,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:39,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-11-06 23:47:39,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:39,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-11-06 23:47:39,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:39,435 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 23:47:39,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863786292] [2020-11-06 23:47:39,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:47:39,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-11-06 23:47:39,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060207301] [2020-11-06 23:47:39,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-06 23:47:39,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:47:39,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-06 23:47:39,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-11-06 23:47:39,437 INFO L87 Difference]: Start difference. First operand 661 states and 715 transitions. Second operand 14 states. [2020-11-06 23:47:40,230 WARN L194 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:40,608 WARN L194 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:47:40,987 WARN L194 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:41,364 WARN L194 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:47:41,728 WARN L194 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:42,827 WARN L194 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:43,203 WARN L194 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:47:43,596 WARN L194 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:43,990 WARN L194 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:47:44,350 WARN L194 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:46,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:47:46,651 INFO L93 Difference]: Finished difference Result 1581 states and 1915 transitions. [2020-11-06 23:47:46,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-06 23:47:46,652 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 210 [2020-11-06 23:47:46,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:47:46,658 INFO L225 Difference]: With dead ends: 1581 [2020-11-06 23:47:46,658 INFO L226 Difference]: Without dead ends: 1035 [2020-11-06 23:47:46,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-11-06 23:47:46,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2020-11-06 23:47:47,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 673. [2020-11-06 23:47:47,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2020-11-06 23:47:47,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 727 transitions. [2020-11-06 23:47:47,021 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 727 transitions. Word has length 210 [2020-11-06 23:47:47,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:47:47,022 INFO L481 AbstractCegarLoop]: Abstraction has 673 states and 727 transitions. [2020-11-06 23:47:47,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-06 23:47:47,022 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 727 transitions. [2020-11-06 23:47:47,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-11-06 23:47:47,026 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:47:47,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:47:47,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-06 23:47:47,026 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 23:47:47,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:47:47,027 INFO L82 PathProgramCache]: Analyzing trace with hash 3523493, now seen corresponding path program 1 times [2020-11-06 23:47:47,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:47:47,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380892790] [2020-11-06 23:47:47,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:47:47,030 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:47:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:47,435 WARN L194 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:47:47,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:47:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:47,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:47:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:47,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:47:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:47,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:47:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:47,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:47:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:47,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:47:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:47,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-11-06 23:47:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:47,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-11-06 23:47:47,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:47,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:47,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:47,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:47,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:47:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:47,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:47:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:47,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-11-06 23:47:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:47,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-11-06 23:47:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:47,656 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 23:47:47,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380892790] [2020-11-06 23:47:47,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:47:47,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-06 23:47:47,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298411487] [2020-11-06 23:47:47,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-06 23:47:47,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:47:47,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-06 23:47:47,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-06 23:47:47,658 INFO L87 Difference]: Start difference. First operand 673 states and 727 transitions. Second operand 8 states. [2020-11-06 23:47:48,319 WARN L194 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:47:49,050 WARN L194 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:47:53,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:47:53,553 INFO L93 Difference]: Finished difference Result 2271 states and 2837 transitions. [2020-11-06 23:47:53,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-06 23:47:53,553 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 210 [2020-11-06 23:47:53,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:47:53,565 INFO L225 Difference]: With dead ends: 2271 [2020-11-06 23:47:53,565 INFO L226 Difference]: Without dead ends: 1713 [2020-11-06 23:47:53,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 42 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2020-11-06 23:47:53,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2020-11-06 23:47:54,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1135. [2020-11-06 23:47:54,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1135 states. [2020-11-06 23:47:54,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1267 transitions. [2020-11-06 23:47:54,216 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1267 transitions. Word has length 210 [2020-11-06 23:47:54,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:47:54,216 INFO L481 AbstractCegarLoop]: Abstraction has 1135 states and 1267 transitions. [2020-11-06 23:47:54,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-06 23:47:54,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1267 transitions. [2020-11-06 23:47:54,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-11-06 23:47:54,219 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:47:54,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:47:54,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-06 23:47:54,220 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 23:47:54,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:47:54,220 INFO L82 PathProgramCache]: Analyzing trace with hash -265082668, now seen corresponding path program 1 times [2020-11-06 23:47:54,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:47:54,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659608471] [2020-11-06 23:47:54,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:47:54,224 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:47:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 23:47:54,315 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 23:47:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 23:47:54,379 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 23:47:54,648 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-06 23:47:54,649 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 23:47:54,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-06 23:47:54,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:47:54 BoogieIcfgContainer [2020-11-06 23:47:54,689 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 23:47:54,690 INFO L168 Benchmark]: Toolchain (without parser) took 61323.66 ms. Allocated memory was 151.0 MB in the beginning and 580.9 MB in the end (delta: 429.9 MB). Free memory was 125.3 MB in the beginning and 223.4 MB in the end (delta: -98.1 MB). Peak memory consumption was 333.2 MB. Max. memory is 8.0 GB. [2020-11-06 23:47:54,691 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 125.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 23:47:54,692 INFO L168 Benchmark]: CACSL2BoogieTranslator took 652.69 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 102.6 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-06 23:47:54,692 INFO L168 Benchmark]: Boogie Preprocessor took 130.82 ms. Allocated memory is still 151.0 MB. Free memory was 102.6 MB in the beginning and 98.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-11-06 23:47:54,693 INFO L168 Benchmark]: RCFGBuilder took 1771.38 ms. Allocated memory was 151.0 MB in the beginning and 192.9 MB in the end (delta: 41.9 MB). Free memory was 98.7 MB in the beginning and 120.3 MB in the end (delta: -21.6 MB). Peak memory consumption was 23.8 MB. Max. memory is 8.0 GB. [2020-11-06 23:47:54,694 INFO L168 Benchmark]: TraceAbstraction took 58750.05 ms. Allocated memory was 192.9 MB in the beginning and 580.9 MB in the end (delta: 388.0 MB). Free memory was 119.8 MB in the beginning and 223.4 MB in the end (delta: -103.6 MB). Peak memory consumption was 284.3 MB. Max. memory is 8.0 GB. [2020-11-06 23:47:54,700 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 125.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 652.69 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 102.6 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 130.82 ms. Allocated memory is still 151.0 MB. Free memory was 102.6 MB in the beginning and 98.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1771.38 ms. Allocated memory was 151.0 MB in the beginning and 192.9 MB in the end (delta: 41.9 MB). Free memory was 98.7 MB in the beginning and 120.3 MB in the end (delta: -21.6 MB). Peak memory consumption was 23.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 58750.05 ms. Allocated memory was 192.9 MB in the beginning and 580.9 MB in the end (delta: 388.0 MB). Free memory was 119.8 MB in the beginning and 223.4 MB in the end (delta: -103.6 MB). Peak memory consumption was 284.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L231] int pumpRunning = 0; [L232] int systemActive = 1; [L693] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L891] int waterLevel = 1; [L892] int methaneLevelCritical = 0; [L123] int retValue_acc ; [L124] int tmp ; [L128] FCALL select_helpers() [L129] FCALL select_features() [L130] CALL, EXPR valid_product() [L489] int retValue_acc ; [L492] retValue_acc = 1 [L493] return (retValue_acc); [L130] RET, EXPR valid_product() [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L134] FCALL setup() [L135] CALL runTest() [L114] CALL test() [L148] int splverifierCounter ; [L149] int tmp ; [L150] int tmp___0 ; [L151] int tmp___1 ; [L152] int tmp___2 ; [L155] splverifierCounter = 0 [L157] COND TRUE 1 [L159] COND TRUE splverifierCounter < 4 [L165] tmp = __VERIFIER_nondet_int() [L167] COND TRUE \read(tmp) [L169] CALL waterRise() [L909] COND TRUE waterLevel < 2 [L910] waterLevel = waterLevel + 1 [L169] RET waterRise() [L175] tmp___0 = __VERIFIER_nondet_int() [L177] COND TRUE \read(tmp___0) [L179] CALL changeMethaneLevel() [L921] COND FALSE !(\read(methaneLevelCritical)) [L924] methaneLevelCritical = 1 [L179] RET changeMethaneLevel() [L185] tmp___2 = __VERIFIER_nondet_int() [L187] COND TRUE \read(tmp___2) [L189] CALL startSystem() [L458] systemActive = 1 [L189] RET startSystem() [L202] CALL timeShift() [L239] COND FALSE !(\read(pumpRunning)) [L246] COND TRUE \read(systemActive) [L248] CALL processEnvironment() [L320] int tmp ; [L323] COND FALSE !(\read(pumpRunning)) [L338] CALL processEnvironment__wrappee__lowWaterSensor() [L294] int tmp ; [L297] COND FALSE !(\read(pumpRunning)) [L312] CALL processEnvironment__wrappee__highWaterSensor() [L268] int tmp ; [L271] COND TRUE ! pumpRunning [L273] CALL, EXPR isHighWaterLevel() [L417] int retValue_acc ; [L418] int tmp ; [L419] int tmp___0 ; [L423] CALL, EXPR isHighWaterSensorDry() [L971] int retValue_acc ; [L974] COND FALSE !(waterLevel < 2) [L978] retValue_acc = 0 [L979] return (retValue_acc); [L423] RET, EXPR isHighWaterSensorDry() [L423] tmp = isHighWaterSensorDry() [L425] COND FALSE !(\read(tmp)) [L428] tmp___0 = 1 [L430] retValue_acc = tmp___0 [L431] return (retValue_acc); [L273] RET, EXPR isHighWaterLevel() [L273] tmp = isHighWaterLevel() [L275] COND TRUE \read(tmp) [L277] CALL activatePump() [L348] pumpRunning = 1 [L277] RET activatePump() [L312] RET processEnvironment__wrappee__highWaterSensor() [L338] RET processEnvironment__wrappee__lowWaterSensor() [L248] RET processEnvironment() [L254] CALL __utac_acc__Specification1_spec__1() [L499] int tmp ; [L500] int tmp___0 ; [L504] CALL, EXPR isMethaneLevelCritical() [L930] int retValue_acc ; [L933] retValue_acc = methaneLevelCritical [L934] return (retValue_acc); [L504] RET, EXPR isMethaneLevelCritical() [L504] tmp = isMethaneLevelCritical() [L506] COND TRUE \read(tmp) [L508] CALL, EXPR isPumpRunning() [L372] int retValue_acc ; [L375] retValue_acc = pumpRunning [L376] return (retValue_acc); [L508] RET, EXPR isPumpRunning() [L508] tmp___0 = isPumpRunning() [L510] COND TRUE \read(tmp___0) [L512] CALL __automaton_fail() [L218] CALL reach_error() [L3] __assert_fail("0", "minepump_spec1_product54.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 666 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 58.6s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 48.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2495 SDtfs, 6131 SDslu, 4622 SDs, 0 SdLazy, 10173 SolverSat, 1978 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 23.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 428 GetRequests, 274 SyntacticMatches, 4 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 20.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1135occurred 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: 2.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 2145 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...