/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 19:48:21,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 19:48:21,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 19:48:21,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 19:48:21,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 19:48:21,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 19:48:21,531 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 19:48:21,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 19:48:21,543 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 19:48:21,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 19:48:21,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 19:48:21,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 19:48:21,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 19:48:21,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 19:48:21,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 19:48:21,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 19:48:21,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 19:48:21,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 19:48:21,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 19:48:21,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 19:48:21,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 19:48:21,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 19:48:21,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 19:48:21,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 19:48:21,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 19:48:21,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 19:48:21,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 19:48:21,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 19:48:21,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 19:48:21,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 19:48:21,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 19:48:21,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 19:48:21,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 19:48:21,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 19:48:21,610 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 19:48:21,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 19:48:21,611 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 19:48:21,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 19:48:21,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 19:48:21,612 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 19:48:21,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 19:48:21,614 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 19:48:21,627 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 19:48:21,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 19:48:21,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 19:48:21,629 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 19:48:21,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 19:48:21,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 19:48:21,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 19:48:21,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 19:48:21,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 19:48:21,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 19:48:21,631 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 19:48:21,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 19:48:21,632 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 19:48:21,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 19:48:21,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 19:48:21,633 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 19:48:21,633 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 19:48:21,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 19:48:21,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:48:21,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 19:48:21,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 19:48:21,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 19:48:21,635 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 19:48:21,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 19:48:22,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 19:48:22,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 19:48:22,046 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 19:48:22,047 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 19:48:22,048 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c [2020-10-23 19:48:22,132 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e8439246/87035534ac874cb6be8fdcac6c607ecc/FLAG7c322e977 [2020-10-23 19:48:22,815 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 19:48:22,816 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c [2020-10-23 19:48:22,837 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e8439246/87035534ac874cb6be8fdcac6c607ecc/FLAG7c322e977 [2020-10-23 19:48:23,140 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e8439246/87035534ac874cb6be8fdcac6c607ecc [2020-10-23 19:48:23,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 19:48:23,152 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 19:48:23,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 19:48:23,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 19:48:23,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 19:48:23,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:48:23" (1/1) ... [2020-10-23 19:48:23,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@602a3d3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:23, skipping insertion in model container [2020-10-23 19:48:23,166 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:48:23" (1/1) ... [2020-10-23 19:48:23,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 19:48:23,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 19:48:23,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:48:23,655 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 19:48:23,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:48:23,812 INFO L208 MainTranslator]: Completed translation [2020-10-23 19:48:23,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:23 WrapperNode [2020-10-23 19:48:23,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 19:48:23,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 19:48:23,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 19:48:23,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 19:48:23,828 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:23" (1/1) ... [2020-10-23 19:48:23,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:23" (1/1) ... [2020-10-23 19:48:23,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:23" (1/1) ... [2020-10-23 19:48:23,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:23" (1/1) ... [2020-10-23 19:48:23,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:23" (1/1) ... [2020-10-23 19:48:24,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:23" (1/1) ... [2020-10-23 19:48:24,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:23" (1/1) ... [2020-10-23 19:48:24,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 19:48:24,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 19:48:24,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 19:48:24,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 19:48:24,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:48:24,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 19:48:24,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 19:48:24,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 19:48:24,125 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 19:48:24,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-10-23 19:48:24,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 19:48:24,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 19:48:24,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 19:48:24,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 19:48:24,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 19:48:24,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 19:48:24,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 19:48:24,127 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 19:48:24,127 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 19:48:24,127 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 19:48:24,127 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 19:48:24,128 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 19:48:24,128 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 19:48:24,129 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 19:48:24,129 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 19:48:24,130 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-10-23 19:48:24,131 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 19:48:24,134 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 19:48:24,134 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 19:48:24,134 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 19:48:24,135 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 19:48:24,135 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 19:48:24,135 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 19:48:24,136 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-10-23 19:48:24,136 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 19:48:24,137 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 19:48:24,138 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 19:48:24,142 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 19:48:24,142 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 19:48:24,143 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 19:48:24,144 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 19:48:24,144 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 19:48:24,144 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 19:48:24,144 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 19:48:24,144 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 19:48:24,144 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 19:48:24,145 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-10-23 19:48:24,145 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 19:48:24,145 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 19:48:24,145 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 19:48:24,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 19:48:24,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 19:48:24,146 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 19:48:24,146 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 19:48:24,146 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 19:48:24,146 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 19:48:24,146 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-10-23 19:48:24,146 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 19:48:24,147 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 19:48:24,147 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 19:48:24,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 19:48:24,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 19:48:24,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 19:48:24,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 19:48:24,148 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 19:48:24,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 19:48:24,148 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 19:48:24,148 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 19:48:24,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 19:48:24,149 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 19:48:24,149 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 19:48:24,149 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 19:48:24,149 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 19:48:24,149 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 19:48:24,150 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 19:48:24,150 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 19:48:24,150 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 19:48:24,150 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 19:48:24,150 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 19:48:24,151 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 19:48:24,151 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 19:48:24,151 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 19:48:24,151 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 19:48:24,152 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 19:48:24,152 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 19:48:24,153 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 19:48:24,153 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 19:48:24,153 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 19:48:24,153 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-10-23 19:48:24,153 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 19:48:24,154 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 19:48:24,154 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 19:48:24,155 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 19:48:24,155 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 19:48:24,156 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 19:48:24,156 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-10-23 19:48:24,156 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-10-23 19:48:24,156 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 19:48:24,156 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 19:48:24,157 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 19:48:24,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 19:48:24,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 19:48:24,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 19:48:25,456 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 19:48:25,457 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 19:48:25,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:48:25 BoogieIcfgContainer [2020-10-23 19:48:25,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 19:48:25,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 19:48:25,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 19:48:25,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 19:48:25,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:48:23" (1/3) ... [2020-10-23 19:48:25,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@350743d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:48:25, skipping insertion in model container [2020-10-23 19:48:25,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:48:23" (2/3) ... [2020-10-23 19:48:25,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@350743d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:48:25, skipping insertion in model container [2020-10-23 19:48:25,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:48:25" (3/3) ... [2020-10-23 19:48:25,469 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product53.cil.c [2020-10-23 19:48:25,482 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 19:48:25,488 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 19:48:25,503 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 19:48:25,528 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 19:48:25,528 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 19:48:25,528 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 19:48:25,529 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 19:48:25,529 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 19:48:25,529 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 19:48:25,529 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 19:48:25,529 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 19:48:25,558 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states. [2020-10-23 19:48:25,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-23 19:48:25,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:25,581 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] [2020-10-23 19:48:25,581 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:48:25,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:25,588 INFO L82 PathProgramCache]: Analyzing trace with hash 607492218, now seen corresponding path program 1 times [2020-10-23 19:48:25,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:25,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344611684] [2020-10-23 19:48:25,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:25,683 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:26,480 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:26,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:26,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:26,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:26,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:26,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:26,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:26,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:26,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:48:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:26,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 19:48:26,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:26,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:48:26,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344611684] [2020-10-23 19:48:26,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:26,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 19:48:26,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784115415] [2020-10-23 19:48:26,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 19:48:26,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:26,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 19:48:26,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 19:48:26,767 INFO L87 Difference]: Start difference. First operand 341 states. Second operand 3 states. [2020-10-23 19:48:28,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:28,706 INFO L93 Difference]: Finished difference Result 541 states and 644 transitions. [2020-10-23 19:48:28,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 19:48:28,709 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-10-23 19:48:28,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:28,726 INFO L225 Difference]: With dead ends: 541 [2020-10-23 19:48:28,726 INFO L226 Difference]: Without dead ends: 330 [2020-10-23 19:48:28,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 19:48:28,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-10-23 19:48:28,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 287. [2020-10-23 19:48:28,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-23 19:48:28,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 314 transitions. [2020-10-23 19:48:28,924 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 314 transitions. Word has length 148 [2020-10-23 19:48:28,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:28,925 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 314 transitions. [2020-10-23 19:48:28,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 19:48:28,926 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 314 transitions. [2020-10-23 19:48:28,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-23 19:48:28,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:28,931 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] [2020-10-23 19:48:28,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 19:48:28,932 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:48:28,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:28,933 INFO L82 PathProgramCache]: Analyzing trace with hash -197497099, now seen corresponding path program 1 times [2020-10-23 19:48:28,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:28,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712171759] [2020-10-23 19:48:28,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:28,943 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:29,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:29,507 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:29,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:29,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:29,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:29,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:29,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:29,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 19:48:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:29,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 19:48:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:29,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:48:29,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712171759] [2020-10-23 19:48:29,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:29,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 19:48:29,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786843945] [2020-10-23 19:48:29,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 19:48:29,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:29,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 19:48:29,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:48:29,670 INFO L87 Difference]: Start difference. First operand 287 states and 314 transitions. Second operand 4 states. [2020-10-23 19:48:30,464 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:31,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:31,895 INFO L93 Difference]: Finished difference Result 455 states and 515 transitions. [2020-10-23 19:48:31,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 19:48:31,896 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-23 19:48:31,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:31,901 INFO L225 Difference]: With dead ends: 455 [2020-10-23 19:48:31,901 INFO L226 Difference]: Without dead ends: 313 [2020-10-23 19:48:31,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 19:48:31,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-23 19:48:32,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 277. [2020-10-23 19:48:32,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-23 19:48:32,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 301 transitions. [2020-10-23 19:48:32,034 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 301 transitions. Word has length 149 [2020-10-23 19:48:32,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:32,035 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 301 transitions. [2020-10-23 19:48:32,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 19:48:32,035 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 301 transitions. [2020-10-23 19:48:32,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-23 19:48:32,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:32,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:48:32,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 19:48:32,038 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:48:32,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:32,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1054263541, now seen corresponding path program 1 times [2020-10-23 19:48:32,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:32,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341748784] [2020-10-23 19:48:32,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:32,044 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:32,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:32,501 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:32,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:32,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:32,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:32,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:32,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:32,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:32,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:32,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 19:48:32,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:32,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-23 19:48:32,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:32,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:48:32,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341748784] [2020-10-23 19:48:32,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:32,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:48:32,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318167922] [2020-10-23 19:48:32,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:48:32,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:32,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:48:32,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:48:32,765 INFO L87 Difference]: Start difference. First operand 277 states and 301 transitions. Second operand 9 states. [2020-10-23 19:48:33,425 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:48:33,908 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:48:34,288 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:48:34,717 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:35,116 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:48:35,508 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:37,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:37,577 INFO L93 Difference]: Finished difference Result 475 states and 540 transitions. [2020-10-23 19:48:37,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 19:48:37,580 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 158 [2020-10-23 19:48:37,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:37,583 INFO L225 Difference]: With dead ends: 475 [2020-10-23 19:48:37,584 INFO L226 Difference]: Without dead ends: 313 [2020-10-23 19:48:37,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-23 19:48:37,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-23 19:48:37,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 277. [2020-10-23 19:48:37,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-23 19:48:37,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 300 transitions. [2020-10-23 19:48:37,706 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 300 transitions. Word has length 158 [2020-10-23 19:48:37,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:37,707 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 300 transitions. [2020-10-23 19:48:37,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:48:37,707 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 300 transitions. [2020-10-23 19:48:37,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-23 19:48:37,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:37,710 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:48:37,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 19:48:37,710 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:48:37,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:37,711 INFO L82 PathProgramCache]: Analyzing trace with hash -125686888, now seen corresponding path program 1 times [2020-10-23 19:48:37,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:37,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625141831] [2020-10-23 19:48:37,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:37,714 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:37,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:38,157 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:38,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:38,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:38,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:38,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:38,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:38,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:38,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-23 19:48:38,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:38,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:38,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:38,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:38,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:38,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 19:48:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:38,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-23 19:48:38,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:38,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:48:38,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625141831] [2020-10-23 19:48:38,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:38,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 19:48:38,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49637927] [2020-10-23 19:48:38,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 19:48:38,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:38,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 19:48:38,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-23 19:48:38,393 INFO L87 Difference]: Start difference. First operand 277 states and 300 transitions. Second operand 6 states. [2020-10-23 19:48:39,001 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:48:40,798 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:41,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:41,756 INFO L93 Difference]: Finished difference Result 614 states and 704 transitions. [2020-10-23 19:48:41,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 19:48:41,757 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2020-10-23 19:48:41,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:41,762 INFO L225 Difference]: With dead ends: 614 [2020-10-23 19:48:41,763 INFO L226 Difference]: Without dead ends: 452 [2020-10-23 19:48:41,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:48:41,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-10-23 19:48:41,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 391. [2020-10-23 19:48:41,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-10-23 19:48:41,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 421 transitions. [2020-10-23 19:48:41,947 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 421 transitions. Word has length 176 [2020-10-23 19:48:41,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:41,947 INFO L481 AbstractCegarLoop]: Abstraction has 391 states and 421 transitions. [2020-10-23 19:48:41,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 19:48:41,948 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 421 transitions. [2020-10-23 19:48:41,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-23 19:48:41,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:41,951 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:48:41,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 19:48:41,951 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:48:41,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:41,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1735889120, now seen corresponding path program 1 times [2020-10-23 19:48:41,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:41,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578131334] [2020-10-23 19:48:41,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:41,956 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:42,364 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:42,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:42,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:42,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:42,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:42,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:42,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:42,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-23 19:48:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:42,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:42,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:42,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:42,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:42,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:48:42,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:42,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:48:42,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:42,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-23 19:48:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:42,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-23 19:48:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:42,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:48:42,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578131334] [2020-10-23 19:48:42,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:42,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:48:42,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233478876] [2020-10-23 19:48:42,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:48:42,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:42,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:48:42,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:48:42,553 INFO L87 Difference]: Start difference. First operand 391 states and 421 transitions. Second operand 9 states. [2020-10-23 19:48:43,181 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:48:45,074 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:45,450 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:48:45,846 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:46,254 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:48:46,632 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:48:46,995 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:47,354 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:47,868 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:49,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:49,779 INFO L93 Difference]: Finished difference Result 996 states and 1141 transitions. [2020-10-23 19:48:49,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 19:48:49,780 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 200 [2020-10-23 19:48:49,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:49,786 INFO L225 Difference]: With dead ends: 996 [2020-10-23 19:48:49,786 INFO L226 Difference]: Without dead ends: 720 [2020-10-23 19:48:49,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-10-23 19:48:49,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2020-10-23 19:48:50,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 629. [2020-10-23 19:48:50,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2020-10-23 19:48:50,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 684 transitions. [2020-10-23 19:48:50,064 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 684 transitions. Word has length 200 [2020-10-23 19:48:50,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:50,065 INFO L481 AbstractCegarLoop]: Abstraction has 629 states and 684 transitions. [2020-10-23 19:48:50,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:48:50,065 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 684 transitions. [2020-10-23 19:48:50,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-23 19:48:50,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:50,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:48:50,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 19:48:50,069 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:48:50,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:50,069 INFO L82 PathProgramCache]: Analyzing trace with hash -109531929, now seen corresponding path program 1 times [2020-10-23 19:48:50,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:50,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807116764] [2020-10-23 19:48:50,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:50,073 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:50,484 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:50,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:50,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:50,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:50,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:50,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:50,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:50,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:50,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:50,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:48:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:50,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:48:50,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:50,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:50,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:50,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:50,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:50,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:48:50,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:50,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:48:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:50,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-23 19:48:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:50,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-23 19:48:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:50,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:48:50,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807116764] [2020-10-23 19:48:50,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:50,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:48:50,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324615850] [2020-10-23 19:48:50,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:48:50,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:50,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:48:50,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:48:50,732 INFO L87 Difference]: Start difference. First operand 629 states and 684 transitions. Second operand 10 states. [2020-10-23 19:48:51,399 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:48:53,182 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:53,536 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:48:53,917 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:48:54,281 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:54,680 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:55,088 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:48:55,465 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:48:55,892 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:57,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:57,471 INFO L93 Difference]: Finished difference Result 787 states and 907 transitions. [2020-10-23 19:48:57,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 19:48:57,471 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 205 [2020-10-23 19:48:57,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:57,480 INFO L225 Difference]: With dead ends: 787 [2020-10-23 19:48:57,480 INFO L226 Difference]: Without dead ends: 783 [2020-10-23 19:48:57,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-23 19:48:57,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2020-10-23 19:48:57,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 629. [2020-10-23 19:48:57,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2020-10-23 19:48:57,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 683 transitions. [2020-10-23 19:48:57,737 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 683 transitions. Word has length 205 [2020-10-23 19:48:57,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:57,737 INFO L481 AbstractCegarLoop]: Abstraction has 629 states and 683 transitions. [2020-10-23 19:48:57,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:48:57,738 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 683 transitions. [2020-10-23 19:48:57,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-23 19:48:57,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:57,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:48:57,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 19:48:57,742 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:48:57,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:57,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1897191115, now seen corresponding path program 1 times [2020-10-23 19:48:57,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:57,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481732144] [2020-10-23 19:48:57,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:57,746 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:58,143 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:48:58,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:48:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:58,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:48:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:58,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:48:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:58,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:48:58,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:58,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:48:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:58,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:48:58,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:58,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:48:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:58,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:58,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:58,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:58,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:48:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:58,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:48:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:58,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:48:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:58,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-23 19:48:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:58,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-23 19:48:58,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:48:58,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:48:58,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481732144] [2020-10-23 19:48:58,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:48:58,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:48:58,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688800847] [2020-10-23 19:48:58,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:48:58,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:48:58,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:48:58,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:48:58,376 INFO L87 Difference]: Start difference. First operand 629 states and 683 transitions. Second operand 10 states. [2020-10-23 19:48:59,851 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:00,228 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:49:00,617 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:49:00,990 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:49:01,388 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:49:01,767 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:49:03,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:49:03,713 INFO L93 Difference]: Finished difference Result 1307 states and 1497 transitions. [2020-10-23 19:49:03,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 19:49:03,714 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 206 [2020-10-23 19:49:03,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:49:03,719 INFO L225 Difference]: With dead ends: 1307 [2020-10-23 19:49:03,719 INFO L226 Difference]: Without dead ends: 793 [2020-10-23 19:49:03,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-23 19:49:03,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2020-10-23 19:49:03,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 645. [2020-10-23 19:49:03,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2020-10-23 19:49:04,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 699 transitions. [2020-10-23 19:49:04,001 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 699 transitions. Word has length 206 [2020-10-23 19:49:04,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:49:04,001 INFO L481 AbstractCegarLoop]: Abstraction has 645 states and 699 transitions. [2020-10-23 19:49:04,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:49:04,001 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 699 transitions. [2020-10-23 19:49:04,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-23 19:49:04,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:49:04,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:49:04,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 19:49:04,006 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:49:04,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:49:04,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1834862379, now seen corresponding path program 1 times [2020-10-23 19:49:04,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:49:04,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633563889] [2020-10-23 19:49:04,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:49:04,010 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:49:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:04,375 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:49:04,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:49:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:04,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:49:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:04,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:49:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:04,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:49:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:04,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:49:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:04,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:49:04,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:04,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:49:04,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:04,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:04,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:04,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:04,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:49:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:04,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:49:04,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:04,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-23 19:49:04,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:04,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-23 19:49:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:04,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:49:04,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633563889] [2020-10-23 19:49:04,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:49:04,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-23 19:49:04,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876748663] [2020-10-23 19:49:04,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 19:49:04,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:49:04,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 19:49:04,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-23 19:49:04,672 INFO L87 Difference]: Start difference. First operand 645 states and 699 transitions. Second operand 13 states. [2020-10-23 19:49:05,444 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:05,829 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:49:06,213 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:49:06,585 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:49:06,952 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:49:08,059 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:49:08,430 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:49:08,856 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:49:09,253 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:49:09,624 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:49:11,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:49:11,999 INFO L93 Difference]: Finished difference Result 1345 states and 1553 transitions. [2020-10-23 19:49:12,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 19:49:12,003 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 206 [2020-10-23 19:49:12,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:49:12,010 INFO L225 Difference]: With dead ends: 1345 [2020-10-23 19:49:12,010 INFO L226 Difference]: Without dead ends: 815 [2020-10-23 19:49:12,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-10-23 19:49:12,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2020-10-23 19:49:12,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 657. [2020-10-23 19:49:12,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 657 states. [2020-10-23 19:49:12,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 711 transitions. [2020-10-23 19:49:12,254 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 711 transitions. Word has length 206 [2020-10-23 19:49:12,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:49:12,255 INFO L481 AbstractCegarLoop]: Abstraction has 657 states and 711 transitions. [2020-10-23 19:49:12,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 19:49:12,255 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 711 transitions. [2020-10-23 19:49:12,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-23 19:49:12,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:49:12,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:49:12,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 19:49:12,260 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:49:12,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:49:12,260 INFO L82 PathProgramCache]: Analyzing trace with hash -320199000, now seen corresponding path program 1 times [2020-10-23 19:49:12,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:49:12,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912463082] [2020-10-23 19:49:12,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:49:12,264 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:49:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:12,678 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:49:12,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:49:12,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:12,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:49:12,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:12,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:49:12,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:12,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:49:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:12,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:49:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:12,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:49:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:12,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:49:12,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:12,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:12,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:12,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:12,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:12,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:12,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:49:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:12,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:49:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:12,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-23 19:49:12,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:12,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-23 19:49:12,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:12,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:49:12,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912463082] [2020-10-23 19:49:12,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:49:12,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 19:49:12,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898608933] [2020-10-23 19:49:12,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 19:49:12,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:49:12,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 19:49:12,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 19:49:12,915 INFO L87 Difference]: Start difference. First operand 657 states and 711 transitions. Second operand 7 states. [2020-10-23 19:49:13,614 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:49:14,459 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:49:17,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:49:17,843 INFO L93 Difference]: Finished difference Result 1811 states and 2144 transitions. [2020-10-23 19:49:17,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 19:49:17,851 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 206 [2020-10-23 19:49:17,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:49:17,858 INFO L225 Difference]: With dead ends: 1811 [2020-10-23 19:49:17,858 INFO L226 Difference]: Without dead ends: 1269 [2020-10-23 19:49:17,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-23 19:49:17,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2020-10-23 19:49:18,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1095. [2020-10-23 19:49:18,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1095 states. [2020-10-23 19:49:18,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1227 transitions. [2020-10-23 19:49:18,282 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1227 transitions. Word has length 206 [2020-10-23 19:49:18,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:49:18,282 INFO L481 AbstractCegarLoop]: Abstraction has 1095 states and 1227 transitions. [2020-10-23 19:49:18,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 19:49:18,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1227 transitions. [2020-10-23 19:49:18,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-23 19:49:18,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:49:18,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:49:18,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 19:49:18,286 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:49:18,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:49:18,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1130921074, now seen corresponding path program 1 times [2020-10-23 19:49:18,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:49:18,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101019221] [2020-10-23 19:49:18,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:49:18,290 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:49:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:49:18,395 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:49:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:49:18,469 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:49:18,709 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 19:49:18,709 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 19:49:18,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 19:49:18,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 07:49:18 BoogieIcfgContainer [2020-10-23 19:49:18,753 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 19:49:18,763 INFO L168 Benchmark]: Toolchain (without parser) took 55608.74 ms. Allocated memory was 151.0 MB in the beginning and 653.3 MB in the end (delta: 502.3 MB). Free memory was 126.5 MB in the beginning and 470.3 MB in the end (delta: -343.8 MB). Peak memory consumption was 159.6 MB. Max. memory is 8.0 GB. [2020-10-23 19:49:18,774 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 19:49:18,775 INFO L168 Benchmark]: CACSL2BoogieTranslator took 656.68 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 104.3 MB in the end (delta: 21.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-23 19:49:18,775 INFO L168 Benchmark]: Boogie Preprocessor took 211.82 ms. Allocated memory is still 151.0 MB. Free memory was 104.3 MB in the beginning and 132.4 MB in the end (delta: -28.1 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-10-23 19:49:18,776 INFO L168 Benchmark]: RCFGBuilder took 1433.11 ms. Allocated memory is still 151.0 MB. Free memory was 132.4 MB in the beginning and 86.6 MB in the end (delta: 45.8 MB). Peak memory consumption was 65.7 MB. Max. memory is 8.0 GB. [2020-10-23 19:49:18,780 INFO L168 Benchmark]: TraceAbstraction took 53291.31 ms. Allocated memory was 151.0 MB in the beginning and 653.3 MB in the end (delta: 502.3 MB). Free memory was 86.6 MB in the beginning and 470.3 MB in the end (delta: -383.7 MB). Peak memory consumption was 118.1 MB. Max. memory is 8.0 GB. [2020-10-23 19:49:18,784 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 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 656.68 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 104.3 MB in the end (delta: 21.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 211.82 ms. Allocated memory is still 151.0 MB. Free memory was 104.3 MB in the beginning and 132.4 MB in the end (delta: -28.1 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1433.11 ms. Allocated memory is still 151.0 MB. Free memory was 132.4 MB in the beginning and 86.6 MB in the end (delta: 45.8 MB). Peak memory consumption was 65.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 53291.31 ms. Allocated memory was 151.0 MB in the beginning and 653.3 MB in the end (delta: 502.3 MB). Free memory was 86.6 MB in the beginning and 470.3 MB in the end (delta: -383.7 MB). Peak memory consumption was 118.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L249] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L446] int cleanupTimeShifts = 4; [L556] int pumpRunning = 0; [L557] int systemActive = 1; [L880] int waterLevel = 1; [L881] int methaneLevelCritical = 0; [L527] int retValue_acc ; [L528] int tmp ; [L532] FCALL select_helpers() [L533] FCALL select_features() [L534] CALL, EXPR valid_product() [L870] int retValue_acc ; [L873] retValue_acc = 1 [L874] return (retValue_acc); [L534] RET, EXPR valid_product() [L534] tmp = valid_product() [L536] COND TRUE \read(tmp) [L538] FCALL setup() [L539] CALL runTest() [L518] CALL test() [L780] int splverifierCounter ; [L781] int tmp ; [L782] int tmp___0 ; [L783] int tmp___1 ; [L784] int tmp___2 ; [L787] splverifierCounter = 0 [L789] COND TRUE 1 [L791] COND TRUE splverifierCounter < 4 [L797] tmp = __VERIFIER_nondet_int() [L799] COND TRUE \read(tmp) [L801] CALL waterRise() [L898] COND TRUE waterLevel < 2 [L899] waterLevel = waterLevel + 1 [L801] RET waterRise() [L807] tmp___0 = __VERIFIER_nondet_int() [L809] COND TRUE \read(tmp___0) [L811] CALL changeMethaneLevel() [L910] COND FALSE !(\read(methaneLevelCritical)) [L913] methaneLevelCritical = 1 [L811] RET changeMethaneLevel() [L817] tmp___2 = __VERIFIER_nondet_int() [L819] COND TRUE \read(tmp___2) [L832] CALL timeShift() [L563] COND FALSE !(\read(pumpRunning)) [L570] COND TRUE \read(systemActive) [L572] CALL processEnvironment() [L644] int tmp ; [L647] COND FALSE !(\read(pumpRunning)) [L662] CALL processEnvironment__wrappee__lowWaterSensor() [L618] int tmp ; [L621] COND FALSE !(\read(pumpRunning)) [L636] CALL processEnvironment__wrappee__highWaterSensor() [L592] int tmp ; [L595] COND TRUE ! pumpRunning [L597] CALL, EXPR isHighWaterLevel() [L741] int retValue_acc ; [L742] int tmp ; [L743] int tmp___0 ; [L747] CALL, EXPR isHighWaterSensorDry() [L960] int retValue_acc ; [L963] COND FALSE !(waterLevel < 2) [L967] retValue_acc = 0 [L968] return (retValue_acc); [L747] RET, EXPR isHighWaterSensorDry() [L747] tmp = isHighWaterSensorDry() [L749] COND FALSE !(\read(tmp)) [L752] tmp___0 = 1 [L754] retValue_acc = tmp___0 [L755] return (retValue_acc); [L597] RET, EXPR isHighWaterLevel() [L597] tmp = isHighWaterLevel() [L599] COND TRUE \read(tmp) [L601] CALL activatePump() [L672] pumpRunning = 1 [L601] RET activatePump() [L636] RET processEnvironment__wrappee__highWaterSensor() [L662] RET processEnvironment__wrappee__lowWaterSensor() [L572] RET processEnvironment() [L578] CALL __utac_acc__Specification1_spec__1() [L46] int tmp ; [L47] int tmp___0 ; [L51] CALL, EXPR isMethaneLevelCritical() [L919] int retValue_acc ; [L922] retValue_acc = methaneLevelCritical [L923] return (retValue_acc); [L51] RET, EXPR isMethaneLevelCritical() [L51] tmp = isMethaneLevelCritical() [L53] COND TRUE \read(tmp) [L55] CALL, EXPR isPumpRunning() [L696] int retValue_acc ; [L699] retValue_acc = pumpRunning [L700] return (retValue_acc); [L55] RET, EXPR isPumpRunning() [L55] tmp___0 = isPumpRunning() [L57] COND TRUE \read(tmp___0) [L59] CALL __automaton_fail() [L75] CALL reach_error() [L3] __assert_fail("0", "minepump_spec1_product53.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 662 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 53.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 44.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2440 SDtfs, 4205 SDslu, 4065 SDs, 0 SdLazy, 8699 SolverSat, 1288 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 366 GetRequests, 247 SyntacticMatches, 5 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 20.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1095occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 901 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...