/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_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 23:46:29,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 23:46:29,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 23:46:29,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 23:46:29,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 23:46:29,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 23:46:29,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 23:46:29,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 23:46:29,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 23:46:29,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 23:46:29,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 23:46:29,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 23:46:29,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 23:46:29,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 23:46:29,534 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 23:46:29,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 23:46:29,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 23:46:29,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 23:46:29,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 23:46:29,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 23:46:29,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 23:46:29,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 23:46:29,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 23:46:29,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 23:46:29,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-06 23:46:29,575 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-06 23:46:29,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-06 23:46:29,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-06 23:46:29,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-06 23:46:29,579 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-06 23:46:29,579 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-06 23:46:29,580 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-06 23:46:29,581 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-06 23:46:29,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-06 23:46:29,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-06 23:46:29,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-06 23:46:29,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-06 23:46:29,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-06 23:46:29,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 23:46:29,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 23:46:29,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 23:46:29,587 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-06 23:46:29,600 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 23:46:29,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 23:46:29,602 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 23:46:29,602 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 23:46:29,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 23:46:29,602 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 23:46:29,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 23:46:29,603 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 23:46:29,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 23:46:29,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 23:46:29,603 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 23:46:29,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 23:46:29,604 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 23:46:29,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 23:46:29,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 23:46:29,604 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-06 23:46:29,605 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 23:46:29,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 23:46:29,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 23:46:29,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 23:46:29,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-06 23:46:29,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 23:46:29,606 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 23:46:29,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 23:46:29,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 23:46:29,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 23:46:29,991 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 23:46:29,992 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 23:46:29,993 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c [2020-11-06 23:46:30,085 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1456dee9/90a675066dde49fb91cbb0a3b96952e9/FLAG848c5dd56 [2020-11-06 23:46:30,734 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 23:46:30,735 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c [2020-11-06 23:46:30,752 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1456dee9/90a675066dde49fb91cbb0a3b96952e9/FLAG848c5dd56 [2020-11-06 23:46:30,979 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1456dee9/90a675066dde49fb91cbb0a3b96952e9 [2020-11-06 23:46:30,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 23:46:30,987 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 23:46:30,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 23:46:30,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 23:46:30,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 23:46:30,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:46:30" (1/1) ... [2020-11-06 23:46:31,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38b2851c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:30, skipping insertion in model container [2020-11-06 23:46:31,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:46:30" (1/1) ... [2020-11-06 23:46:31,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 23:46:31,060 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 23:46:31,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 23:46:31,431 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 23:46:31,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 23:46:31,632 INFO L208 MainTranslator]: Completed translation [2020-11-06 23:46:31,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:31 WrapperNode [2020-11-06 23:46:31,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 23:46:31,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 23:46:31,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 23:46:31,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 23:46:31,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:31" (1/1) ... [2020-11-06 23:46:31,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:31" (1/1) ... [2020-11-06 23:46:31,667 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:31" (1/1) ... [2020-11-06 23:46:31,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:31" (1/1) ... [2020-11-06 23:46:31,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:31" (1/1) ... [2020-11-06 23:46:31,710 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:31" (1/1) ... [2020-11-06 23:46:31,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:31" (1/1) ... [2020-11-06 23:46:31,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 23:46:31,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 23:46:31,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 23:46:31,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 23:46:31,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 23:46:31,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 23:46:31,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 23:46:31,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-11-06 23:46:31,800 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 23:46:31,800 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-11-06 23:46:31,801 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-11-06 23:46:31,801 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-11-06 23:46:31,801 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-11-06 23:46:31,801 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-11-06 23:46:31,801 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-11-06 23:46:31,801 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-11-06 23:46:31,802 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-11-06 23:46:31,802 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-11-06 23:46:31,802 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-11-06 23:46:31,802 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-11-06 23:46:31,802 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-11-06 23:46:31,802 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-11-06 23:46:31,803 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-11-06 23:46:31,803 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-11-06 23:46:31,803 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-11-06 23:46:31,803 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-11-06 23:46:31,803 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-11-06 23:46:31,804 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-11-06 23:46:31,804 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-11-06 23:46:31,804 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-11-06 23:46:31,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-11-06 23:46:31,804 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-11-06 23:46:31,804 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-11-06 23:46:31,805 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-11-06 23:46:31,805 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-11-06 23:46:31,805 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-11-06 23:46:31,805 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 23:46:31,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-11-06 23:46:31,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-11-06 23:46:31,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-11-06 23:46:31,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-11-06 23:46:31,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-11-06 23:46:31,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-11-06 23:46:31,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-11-06 23:46:31,806 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-11-06 23:46:31,807 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-11-06 23:46:31,807 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-11-06 23:46:31,807 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-11-06 23:46:31,807 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 23:46:31,807 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 23:46:31,807 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 23:46:31,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 23:46:31,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 23:46:31,808 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-11-06 23:46:31,808 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-11-06 23:46:31,808 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-11-06 23:46:31,808 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-11-06 23:46:31,808 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-11-06 23:46:31,809 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-11-06 23:46:31,809 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-11-06 23:46:31,809 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-11-06 23:46:31,809 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-11-06 23:46:31,809 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-11-06 23:46:31,809 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-11-06 23:46:31,809 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-11-06 23:46:31,810 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-11-06 23:46:31,810 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-11-06 23:46:31,810 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-11-06 23:46:31,810 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-11-06 23:46:31,810 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-11-06 23:46:31,810 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-11-06 23:46:31,810 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-11-06 23:46:31,811 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-11-06 23:46:31,811 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-11-06 23:46:31,811 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-11-06 23:46:31,811 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-11-06 23:46:31,811 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-11-06 23:46:31,811 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-11-06 23:46:31,811 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-11-06 23:46:31,812 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-11-06 23:46:31,812 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-11-06 23:46:31,812 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-11-06 23:46:31,812 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-11-06 23:46:31,812 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-11-06 23:46:31,812 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-11-06 23:46:31,813 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 23:46:31,813 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-06 23:46:31,813 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-06 23:46:31,813 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-11-06 23:46:31,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-06 23:46:31,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-06 23:46:31,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 23:46:31,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-06 23:46:31,814 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-11-06 23:46:31,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 23:46:31,814 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-11-06 23:46:31,814 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-11-06 23:46:31,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 23:46:31,815 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-11-06 23:46:31,815 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-11-06 23:46:31,815 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-11-06 23:46:31,815 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-11-06 23:46:31,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 23:46:31,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 23:46:31,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 23:46:32,996 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 23:46:32,996 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-06 23:46:32,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:46:32 BoogieIcfgContainer [2020-11-06 23:46:32,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 23:46:33,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 23:46:33,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 23:46:33,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 23:46:33,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:46:30" (1/3) ... [2020-11-06 23:46:33,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47bc3539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:46:33, skipping insertion in model container [2020-11-06 23:46:33,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:31" (2/3) ... [2020-11-06 23:46:33,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47bc3539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:46:33, skipping insertion in model container [2020-11-06 23:46:33,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:46:32" (3/3) ... [2020-11-06 23:46:33,009 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product52.cil.c [2020-11-06 23:46:33,027 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-06 23:46:33,031 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-11-06 23:46:33,045 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-06 23:46:33,070 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 23:46:33,070 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 23:46:33,070 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-06 23:46:33,070 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 23:46:33,071 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 23:46:33,071 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 23:46:33,071 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 23:46:33,071 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 23:46:33,096 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states. [2020-11-06 23:46:33,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-11-06 23:46:33,117 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:46:33,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:46:33,119 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 23:46:33,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:46:33,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1598289080, now seen corresponding path program 1 times [2020-11-06 23:46:33,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:46:33,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881347290] [2020-11-06 23:46:33,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:46:33,221 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:46:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:34,020 WARN L194 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:46:34,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:46:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:34,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:46:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:34,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:46:34,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:34,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:46:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:34,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:46:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:34,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:46:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:34,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-11-06 23:46:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:34,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:46:34,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881347290] [2020-11-06 23:46:34,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:46:34,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 23:46:34,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491239192] [2020-11-06 23:46:34,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 23:46:34,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:46:34,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 23:46:34,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 23:46:34,252 INFO L87 Difference]: Start difference. First operand 337 states. Second operand 3 states. [2020-11-06 23:46:35,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:46:35,984 INFO L93 Difference]: Finished difference Result 522 states and 620 transitions. [2020-11-06 23:46:35,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 23:46:35,987 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-11-06 23:46:35,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:46:36,004 INFO L225 Difference]: With dead ends: 522 [2020-11-06 23:46:36,004 INFO L226 Difference]: Without dead ends: 321 [2020-11-06 23:46:36,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 23:46:36,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-11-06 23:46:36,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 277. [2020-11-06 23:46:36,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-11-06 23:46:36,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 301 transitions. [2020-11-06 23:46:36,188 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 301 transitions. Word has length 148 [2020-11-06 23:46:36,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:46:36,189 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 301 transitions. [2020-11-06 23:46:36,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 23:46:36,189 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 301 transitions. [2020-11-06 23:46:36,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-11-06 23:46:36,194 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:46:36,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:46:36,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 23:46:36,195 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 23:46:36,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:46:36,195 INFO L82 PathProgramCache]: Analyzing trace with hash -201721292, now seen corresponding path program 1 times [2020-11-06 23:46:36,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:46:36,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830261531] [2020-11-06 23:46:36,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:46:36,200 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:46:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:36,632 WARN L194 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:46:36,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:46:36,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:36,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:46:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:36,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:46:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:36,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:46:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:36,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:46:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:36,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-11-06 23:46:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:36,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-11-06 23:46:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:36,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:46:36,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830261531] [2020-11-06 23:46:36,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:46:36,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 23:46:36,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476041184] [2020-11-06 23:46:36,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 23:46:36,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:46:36,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 23:46:36,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 23:46:36,783 INFO L87 Difference]: Start difference. First operand 277 states and 301 transitions. Second operand 4 states. [2020-11-06 23:46:37,556 WARN L194 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:46:38,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:46:38,870 INFO L93 Difference]: Finished difference Result 426 states and 479 transitions. [2020-11-06 23:46:38,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-06 23:46:38,871 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-11-06 23:46:38,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:46:38,875 INFO L225 Difference]: With dead ends: 426 [2020-11-06 23:46:38,876 INFO L226 Difference]: Without dead ends: 304 [2020-11-06 23:46:38,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 23:46:38,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-11-06 23:46:38,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 267. [2020-11-06 23:46:38,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-11-06 23:46:38,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 288 transitions. [2020-11-06 23:46:38,993 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 288 transitions. Word has length 149 [2020-11-06 23:46:38,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:46:38,993 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 288 transitions. [2020-11-06 23:46:38,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 23:46:38,994 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 288 transitions. [2020-11-06 23:46:38,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-11-06 23:46:38,996 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:46:38,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:46:38,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 23:46:38,997 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 23:46:38,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:46:38,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1457720232, now seen corresponding path program 1 times [2020-11-06 23:46:38,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:46:38,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922897791] [2020-11-06 23:46:38,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:46:39,002 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:46:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:39,386 WARN L194 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:46:39,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:46:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:39,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:46:39,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:39,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:46:39,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:39,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:46:39,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:39,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:46:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:39,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-11-06 23:46:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:39,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-11-06 23:46:39,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:39,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-06 23:46:39,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:39,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:46:39,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922897791] [2020-11-06 23:46:39,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:46:39,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 23:46:39,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491396900] [2020-11-06 23:46:39,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 23:46:39,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:46:39,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 23:46:39,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-06 23:46:39,616 INFO L87 Difference]: Start difference. First operand 267 states and 288 transitions. Second operand 10 states. [2020-11-06 23:46:40,275 WARN L194 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:46:40,694 WARN L194 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:46:41,011 WARN L194 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-11-06 23:46:41,340 WARN L194 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:41,683 WARN L194 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:46:41,961 WARN L194 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:43,024 WARN L194 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:46:45,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:46:45,937 INFO L93 Difference]: Finished difference Result 727 states and 845 transitions. [2020-11-06 23:46:45,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-06 23:46:45,937 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 162 [2020-11-06 23:46:45,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:46:45,943 INFO L225 Difference]: With dead ends: 727 [2020-11-06 23:46:45,943 INFO L226 Difference]: Without dead ends: 575 [2020-11-06 23:46:45,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-11-06 23:46:45,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-11-06 23:46:46,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 478. [2020-11-06 23:46:46,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-11-06 23:46:46,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 534 transitions. [2020-11-06 23:46:46,171 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 534 transitions. Word has length 162 [2020-11-06 23:46:46,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:46:46,172 INFO L481 AbstractCegarLoop]: Abstraction has 478 states and 534 transitions. [2020-11-06 23:46:46,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 23:46:46,172 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 534 transitions. [2020-11-06 23:46:46,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-11-06 23:46:46,175 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:46:46,175 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] [2020-11-06 23:46:46,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 23:46:46,176 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 23:46:46,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:46:46,176 INFO L82 PathProgramCache]: Analyzing trace with hash -536296316, now seen corresponding path program 1 times [2020-11-06 23:46:46,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:46:46,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129229298] [2020-11-06 23:46:46,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:46:46,180 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:46:46,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:46,549 WARN L194 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:46:46,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:46:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:46,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:46:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:46,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:46:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:46,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:46:46,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:46,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:46:46,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:46,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-11-06 23:46:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:46,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-11-06 23:46:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:46,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-11-06 23:46:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:46,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:46:46,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129229298] [2020-11-06 23:46:46,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:46:46,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-06 23:46:46,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85138481] [2020-11-06 23:46:46,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-06 23:46:46,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:46:46,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-06 23:46:46,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-06 23:46:46,723 INFO L87 Difference]: Start difference. First operand 478 states and 534 transitions. Second operand 9 states. [2020-11-06 23:46:47,304 WARN L194 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:46:48,753 WARN L194 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:49,104 WARN L194 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:46:49,590 WARN L194 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:50,017 WARN L194 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:46:50,341 WARN L194 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:46:50,638 WARN L194 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:50,956 WARN L194 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:51,534 WARN L194 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:46:52,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:46:52,777 INFO L93 Difference]: Finished difference Result 1321 states and 1579 transitions. [2020-11-06 23:46:52,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-06 23:46:52,777 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 167 [2020-11-06 23:46:52,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:46:52,785 INFO L225 Difference]: With dead ends: 1321 [2020-11-06 23:46:52,785 INFO L226 Difference]: Without dead ends: 958 [2020-11-06 23:46:52,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-11-06 23:46:52,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2020-11-06 23:46:53,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 801. [2020-11-06 23:46:53,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 801 states. [2020-11-06 23:46:53,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 908 transitions. [2020-11-06 23:46:53,106 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 908 transitions. Word has length 167 [2020-11-06 23:46:53,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:46:53,107 INFO L481 AbstractCegarLoop]: Abstraction has 801 states and 908 transitions. [2020-11-06 23:46:53,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-06 23:46:53,107 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 908 transitions. [2020-11-06 23:46:53,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-11-06 23:46:53,114 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:46:53,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:46:53,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-06 23:46:53,114 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 23:46:53,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:46:53,115 INFO L82 PathProgramCache]: Analyzing trace with hash 401659442, now seen corresponding path program 1 times [2020-11-06 23:46:53,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:46:53,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45341098] [2020-11-06 23:46:53,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:46:53,118 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:46:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:53,502 WARN L194 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:46:53,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:46:53,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:53,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:46:53,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:53,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:46:53,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:53,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:46:53,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:53,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:46:53,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:53,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:46:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:53,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-11-06 23:46:53,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:53,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-06 23:46:53,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:53,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-11-06 23:46:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:53,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:46:53,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45341098] [2020-11-06 23:46:53,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:46:53,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 23:46:53,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977931597] [2020-11-06 23:46:53,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 23:46:53,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:46:53,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 23:46:53,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-06 23:46:53,671 INFO L87 Difference]: Start difference. First operand 801 states and 908 transitions. Second operand 10 states. [2020-11-06 23:46:54,233 WARN L194 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:46:55,734 WARN L194 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:56,055 WARN L194 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:46:56,402 WARN L194 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:56,750 WARN L194 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:46:57,056 WARN L194 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:57,849 WARN L194 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:46:58,161 WARN L194 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:58,595 WARN L194 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:00,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:47:00,035 INFO L93 Difference]: Finished difference Result 2065 states and 2540 transitions. [2020-11-06 23:47:00,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-06 23:47:00,036 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2020-11-06 23:47:00,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:47:00,046 INFO L225 Difference]: With dead ends: 2065 [2020-11-06 23:47:00,047 INFO L226 Difference]: Without dead ends: 1379 [2020-11-06 23:47:00,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-11-06 23:47:00,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2020-11-06 23:47:00,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1111. [2020-11-06 23:47:00,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1111 states. [2020-11-06 23:47:00,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1279 transitions. [2020-11-06 23:47:00,586 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1279 transitions. Word has length 172 [2020-11-06 23:47:00,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:47:00,586 INFO L481 AbstractCegarLoop]: Abstraction has 1111 states and 1279 transitions. [2020-11-06 23:47:00,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 23:47:00,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1279 transitions. [2020-11-06 23:47:00,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-11-06 23:47:00,591 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:47:00,591 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:47:00,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-06 23:47:00,592 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 23:47:00,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:47:00,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1637447794, now seen corresponding path program 1 times [2020-11-06 23:47:00,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:47:00,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334483755] [2020-11-06 23:47:00,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:47:00,596 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:47:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:00,906 WARN L194 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:47:00,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:47:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:00,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:47:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:00,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:47:00,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:00,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:47:00,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:00,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:47:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:00,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:47:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:00,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-11-06 23:47:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:00,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-11-06 23:47:00,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:00,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:01,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:01,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:01,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:47:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:01,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:47:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:01,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-11-06 23:47:01,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:01,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-11-06 23:47:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:01,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:47:01,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334483755] [2020-11-06 23:47:01,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:47:01,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-06 23:47:01,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374076254] [2020-11-06 23:47:01,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-06 23:47:01,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:47:01,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-06 23:47:01,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-11-06 23:47:01,157 INFO L87 Difference]: Start difference. First operand 1111 states and 1279 transitions. Second operand 11 states. [2020-11-06 23:47:02,772 WARN L194 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:03,095 WARN L194 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:47:03,434 WARN L194 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-11-06 23:47:03,750 WARN L194 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:04,083 WARN L194 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:47:04,390 WARN L194 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:06,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:47:06,557 INFO L93 Difference]: Finished difference Result 2724 states and 3410 transitions. [2020-11-06 23:47:06,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-06 23:47:06,558 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 205 [2020-11-06 23:47:06,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:47:06,570 INFO L225 Difference]: With dead ends: 2724 [2020-11-06 23:47:06,570 INFO L226 Difference]: Without dead ends: 1728 [2020-11-06 23:47:06,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-11-06 23:47:06,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2020-11-06 23:47:07,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1149. [2020-11-06 23:47:07,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1149 states. [2020-11-06 23:47:07,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 1319 transitions. [2020-11-06 23:47:07,052 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 1319 transitions. Word has length 205 [2020-11-06 23:47:07,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:47:07,052 INFO L481 AbstractCegarLoop]: Abstraction has 1149 states and 1319 transitions. [2020-11-06 23:47:07,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-06 23:47:07,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 1319 transitions. [2020-11-06 23:47:07,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-11-06 23:47:07,057 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:47:07,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:47:07,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-06 23:47:07,058 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 23:47:07,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:47:07,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1512243410, now seen corresponding path program 1 times [2020-11-06 23:47:07,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:47:07,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005896348] [2020-11-06 23:47:07,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:47:07,062 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:47:07,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:07,400 WARN L194 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:47:07,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:47:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:07,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:47:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:07,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:47:07,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:07,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:47:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:07,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:47:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:07,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:47:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:07,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-11-06 23:47:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:07,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-11-06 23:47:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:07,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:07,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:07,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:47:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:07,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:47:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:07,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-11-06 23:47:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:07,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-11-06 23:47:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:07,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:47:07,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005896348] [2020-11-06 23:47:07,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:47:07,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-11-06 23:47:07,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53698071] [2020-11-06 23:47:07,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-06 23:47:07,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:47:07,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-06 23:47:07,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-11-06 23:47:07,684 INFO L87 Difference]: Start difference. First operand 1149 states and 1319 transitions. Second operand 14 states. [2020-11-06 23:47:08,405 WARN L194 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:08,754 WARN L194 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:47:09,094 WARN L194 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:09,391 WARN L194 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:47:09,665 WARN L194 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:10,715 WARN L194 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:11,023 WARN L194 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:47:11,338 WARN L194 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:11,667 WARN L194 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:47:11,961 WARN L194 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:14,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:47:14,447 INFO L93 Difference]: Finished difference Result 2806 states and 3561 transitions. [2020-11-06 23:47:14,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-06 23:47:14,448 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 205 [2020-11-06 23:47:14,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:47:14,461 INFO L225 Difference]: With dead ends: 2806 [2020-11-06 23:47:14,461 INFO L226 Difference]: Without dead ends: 1772 [2020-11-06 23:47:14,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-11-06 23:47:14,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1772 states. [2020-11-06 23:47:14,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1772 to 1173. [2020-11-06 23:47:14,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1173 states. [2020-11-06 23:47:14,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1343 transitions. [2020-11-06 23:47:14,952 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1343 transitions. Word has length 205 [2020-11-06 23:47:14,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:47:14,954 INFO L481 AbstractCegarLoop]: Abstraction has 1173 states and 1343 transitions. [2020-11-06 23:47:14,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-06 23:47:14,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1343 transitions. [2020-11-06 23:47:14,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-11-06 23:47:14,960 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:47:14,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:47:14,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-06 23:47:14,960 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 23:47:14,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:47:14,961 INFO L82 PathProgramCache]: Analyzing trace with hash -2092229745, now seen corresponding path program 1 times [2020-11-06 23:47:14,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:47:14,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133905029] [2020-11-06 23:47:14,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:47:14,967 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:47:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:15,346 WARN L194 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:47:15,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:47:15,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:15,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:47:15,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:15,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:47:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:15,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:47:15,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:15,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:47:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:15,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:47:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:15,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-11-06 23:47:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:15,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-11-06 23:47:15,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:15,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:15,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:15,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:15,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:15,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:47:15,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:15,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:47:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:15,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-11-06 23:47:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:15,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-11-06 23:47:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:15,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:47:15,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133905029] [2020-11-06 23:47:15,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:47:15,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-06 23:47:15,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410124376] [2020-11-06 23:47:15,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-06 23:47:15,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:47:15,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-06 23:47:15,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-06 23:47:15,601 INFO L87 Difference]: Start difference. First operand 1173 states and 1343 transitions. Second operand 8 states. [2020-11-06 23:47:16,157 WARN L194 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:47:16,762 WARN L194 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:47:21,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:47:21,599 INFO L93 Difference]: Finished difference Result 4337 states and 5555 transitions. [2020-11-06 23:47:21,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-06 23:47:21,599 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 205 [2020-11-06 23:47:21,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:47:21,621 INFO L225 Difference]: With dead ends: 4337 [2020-11-06 23:47:21,621 INFO L226 Difference]: Without dead ends: 3279 [2020-11-06 23:47:21,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2020-11-06 23:47:21,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2020-11-06 23:47:22,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 2353. [2020-11-06 23:47:22,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2353 states. [2020-11-06 23:47:22,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2353 states to 2353 states and 2723 transitions. [2020-11-06 23:47:22,955 INFO L78 Accepts]: Start accepts. Automaton has 2353 states and 2723 transitions. Word has length 205 [2020-11-06 23:47:22,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:47:22,955 INFO L481 AbstractCegarLoop]: Abstraction has 2353 states and 2723 transitions. [2020-11-06 23:47:22,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-06 23:47:22,956 INFO L276 IsEmpty]: Start isEmpty. Operand 2353 states and 2723 transitions. [2020-11-06 23:47:22,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-11-06 23:47:22,961 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:47:22,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:47:22,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-06 23:47:22,962 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 23:47:22,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:47:22,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1544604226, now seen corresponding path program 1 times [2020-11-06 23:47:22,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:47:22,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365592323] [2020-11-06 23:47:22,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:47:22,965 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:47:23,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 23:47:23,032 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 23:47:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 23:47:23,090 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 23:47:23,322 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-06 23:47:23,322 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 23:47:23,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-06 23:47:23,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:47:23 BoogieIcfgContainer [2020-11-06 23:47:23,348 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 23:47:23,350 INFO L168 Benchmark]: Toolchain (without parser) took 52366.39 ms. Allocated memory was 160.4 MB in the beginning and 1.0 GB in the end (delta: 871.4 MB). Free memory was 143.0 MB in the beginning and 518.3 MB in the end (delta: -375.3 MB). Peak memory consumption was 496.6 MB. Max. memory is 8.0 GB. [2020-11-06 23:47:23,351 INFO L168 Benchmark]: CDTParser took 1.02 ms. Allocated memory is still 160.4 MB. Free memory is still 133.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 23:47:23,351 INFO L168 Benchmark]: CACSL2BoogieTranslator took 644.46 ms. Allocated memory is still 160.4 MB. Free memory was 142.3 MB in the beginning and 135.7 MB in the end (delta: 6.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-11-06 23:47:23,352 INFO L168 Benchmark]: Boogie Preprocessor took 88.84 ms. Allocated memory is still 160.4 MB. Free memory was 135.7 MB in the beginning and 131.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-11-06 23:47:23,353 INFO L168 Benchmark]: RCFGBuilder took 1275.57 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 131.8 MB in the beginning and 169.1 MB in the end (delta: -37.3 MB). Peak memory consumption was 63.6 MB. Max. memory is 8.0 GB. [2020-11-06 23:47:23,354 INFO L168 Benchmark]: TraceAbstraction took 50347.03 ms. Allocated memory was 192.9 MB in the beginning and 1.0 GB in the end (delta: 838.9 MB). Free memory was 168.6 MB in the beginning and 518.3 MB in the end (delta: -349.7 MB). Peak memory consumption was 489.7 MB. Max. memory is 8.0 GB. [2020-11-06 23:47:23,357 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.02 ms. Allocated memory is still 160.4 MB. Free memory is still 133.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 644.46 ms. Allocated memory is still 160.4 MB. Free memory was 142.3 MB in the beginning and 135.7 MB in the end (delta: 6.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 88.84 ms. Allocated memory is still 160.4 MB. Free memory was 135.7 MB in the beginning and 131.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1275.57 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 131.8 MB in the beginning and 169.1 MB in the end (delta: -37.3 MB). Peak memory consumption was 63.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 50347.03 ms. Allocated memory was 192.9 MB in the beginning and 1.0 GB in the end (delta: 838.9 MB). Free memory was 168.6 MB in the beginning and 518.3 MB in the end (delta: -349.7 MB). Peak memory consumption was 489.7 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: [L50] int waterLevel = 1; [L51] int methaneLevelCritical = 0; [L160] int pumpRunning = 0; [L161] int systemActive = 1; [L460] int cleanupTimeShifts = 4; [L754] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L536] int retValue_acc ; [L537] int tmp ; [L541] FCALL select_helpers() [L542] FCALL select_features() [L543] CALL, EXPR valid_product() [L977] int retValue_acc ; [L980] retValue_acc = 1 [L981] return (retValue_acc); [L543] RET, EXPR valid_product() [L543] tmp = valid_product() [L545] COND TRUE \read(tmp) [L547] FCALL setup() [L548] CALL runTest() [L527] CALL test() [L392] int splverifierCounter ; [L393] int tmp ; [L394] int tmp___0 ; [L395] int tmp___1 ; [L396] int tmp___2 ; [L399] splverifierCounter = 0 [L401] COND TRUE 1 [L403] COND TRUE splverifierCounter < 4 [L409] tmp = __VERIFIER_nondet_int() [L411] COND TRUE \read(tmp) [L413] CALL waterRise() [L68] COND TRUE waterLevel < 2 [L69] waterLevel = waterLevel + 1 [L413] RET waterRise() [L419] tmp___0 = __VERIFIER_nondet_int() [L421] COND TRUE \read(tmp___0) [L423] CALL changeMethaneLevel() [L80] COND FALSE !(\read(methaneLevelCritical)) [L83] methaneLevelCritical = 1 [L423] RET changeMethaneLevel() [L429] tmp___2 = __VERIFIER_nondet_int() [L431] COND TRUE \read(tmp___2) [L433] CALL startSystem() [L376] systemActive = 1 [L433] RET startSystem() [L448] CALL timeShift() [L168] COND FALSE !(\read(pumpRunning)) [L175] COND TRUE \read(systemActive) [L177] CALL processEnvironment() [L223] int tmp ; [L226] COND FALSE !(\read(pumpRunning)) [L241] CALL processEnvironment__wrappee__highWaterSensor() [L197] int tmp ; [L200] COND TRUE ! pumpRunning [L202] CALL, EXPR isHighWaterLevel() [L320] int retValue_acc ; [L321] int tmp ; [L322] int tmp___0 ; [L326] CALL, EXPR isHighWaterSensorDry() [L130] int retValue_acc ; [L133] COND FALSE !(waterLevel < 2) [L137] retValue_acc = 0 [L138] return (retValue_acc); [L326] RET, EXPR isHighWaterSensorDry() [L326] tmp = isHighWaterSensorDry() [L328] COND FALSE !(\read(tmp)) [L331] tmp___0 = 1 [L333] retValue_acc = tmp___0 [L334] return (retValue_acc); [L202] RET, EXPR isHighWaterLevel() [L202] tmp = isHighWaterLevel() [L204] COND TRUE \read(tmp) [L206] CALL activatePump() [L251] pumpRunning = 1 [L206] RET activatePump() [L241] RET processEnvironment__wrappee__highWaterSensor() [L177] RET processEnvironment() [L183] CALL __utac_acc__Specification1_spec__1() [L560] int tmp ; [L561] int tmp___0 ; [L565] CALL, EXPR isMethaneLevelCritical() [L89] int retValue_acc ; [L92] retValue_acc = methaneLevelCritical [L93] return (retValue_acc); [L565] RET, EXPR isMethaneLevelCritical() [L565] tmp = isMethaneLevelCritical() [L567] COND TRUE \read(tmp) [L569] CALL, EXPR isPumpRunning() [L275] int retValue_acc ; [L278] retValue_acc = pumpRunning [L279] return (retValue_acc); [L569] RET, EXPR isPumpRunning() [L569] tmp___0 = isPumpRunning() [L571] COND TRUE \read(tmp___0) [L573] CALL __automaton_fail() [L385] CALL reach_error() [L3] __assert_fail("0", "minepump_spec1_product52.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 660 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 50.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 40.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2150 SDtfs, 4737 SDslu, 4501 SDs, 0 SdLazy, 9449 SolverSat, 1553 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 333 GetRequests, 202 SyntacticMatches, 3 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 15.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2353occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.6s AutomataMinimizationTime, 8 MinimizatonAttempts, 2707 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...