/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_spec3_product64.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:00:49,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:00:49,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:00:49,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:00:49,506 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:00:49,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:00:49,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:00:49,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:00:49,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:00:49,526 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:00:49,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:00:49,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:00:49,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:00:49,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:00:49,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:00:49,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:00:49,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:00:49,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:00:49,549 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:00:49,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:00:49,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:00:49,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:00:49,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:00:49,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:00:49,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:00:49,568 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:00:49,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:00:49,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:00:49,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:00:49,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:00:49,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:00:49,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:00:49,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:00:49,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:00:49,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:00:49,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:00:49,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:00:49,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:00:49,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:00:49,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:00:49,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:00:49,585 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 19:00:49,624 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:00:49,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:00:49,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:00:49,626 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:00:49,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:00:49,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:00:49,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:00:49,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:00:49,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:00:49,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:00:49,628 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:00:49,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:00:49,628 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:00:49,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:00:49,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:00:49,629 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:00:49,629 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:00:49,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:00:49,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:00:49,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:00:49,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:00:49,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:00:49,630 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:00:49,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:00:50,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:00:50,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:00:50,011 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:00:50,012 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:00:50,013 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product64.cil.c [2021-02-21 19:00:50,098 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/040e068fb/6bd0cf56da75464faf3eea52ccfb80c0/FLAGde86edce9 [2021-02-21 19:00:50,741 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:00:50,741 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product64.cil.c [2021-02-21 19:00:50,762 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/040e068fb/6bd0cf56da75464faf3eea52ccfb80c0/FLAGde86edce9 [2021-02-21 19:00:51,074 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/040e068fb/6bd0cf56da75464faf3eea52ccfb80c0 [2021-02-21 19:00:51,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:00:51,095 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:00:51,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:00:51,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:00:51,106 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:00:51,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:00:51" (1/1) ... [2021-02-21 19:00:51,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e0d5ecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:51, skipping insertion in model container [2021-02-21 19:00:51,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:00:51" (1/1) ... [2021-02-21 19:00:51,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:00:51,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:00:51,533 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product64.cil.c[18698,18711] [2021-02-21 19:00:51,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:00:51,549 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:00:51,661 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product64.cil.c[18698,18711] [2021-02-21 19:00:51,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:00:51,728 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:00:51,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:51 WrapperNode [2021-02-21 19:00:51,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:00:51,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:00:51,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:00:51,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:00:51,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:51" (1/1) ... [2021-02-21 19:00:51,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:51" (1/1) ... [2021-02-21 19:00:51,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:51" (1/1) ... [2021-02-21 19:00:51,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:51" (1/1) ... [2021-02-21 19:00:51,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:51" (1/1) ... [2021-02-21 19:00:51,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:51" (1/1) ... [2021-02-21 19:00:51,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:51" (1/1) ... [2021-02-21 19:00:51,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:00:51,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:00:51,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:00:51,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:00:51,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:51" (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 [2021-02-21 19:00:51,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:00:51,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:00:51,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:00:51,914 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:00:51,914 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:00:51,914 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:00:51,914 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:00:51,915 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:00:51,915 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:00:51,915 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:00:51,915 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 19:00:51,915 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 19:00:51,915 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:00:51,916 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-21 19:00:51,916 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:00:51,916 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:00:51,916 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:00:51,916 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:00:51,916 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:00:51,917 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 19:00:51,917 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 19:00:51,917 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 19:00:51,917 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 19:00:51,918 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:00:51,918 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:00:51,918 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:00:51,918 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:00:51,918 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:00:51,918 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:00:51,918 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:00:51,919 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 19:00:51,919 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 19:00:51,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:00:51,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:00:51,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:00:51,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:00:51,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:00:51,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:00:51,920 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:00:51,920 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:00:51,920 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:00:51,920 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:00:51,921 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:00:51,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:00:51,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-21 19:00:51,921 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:00:51,921 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:00:51,921 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:00:51,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:00:51,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:00:51,922 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:00:51,922 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:00:51,922 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:00:51,922 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:00:51,922 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:00:51,922 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:00:51,922 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:00:51,923 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:00:51,923 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 19:00:51,923 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 19:00:51,923 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:00:51,923 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:00:51,923 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:00:51,923 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:00:51,924 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:00:51,924 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 19:00:51,924 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 19:00:51,924 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-21 19:00:51,924 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:00:51,924 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:00:51,924 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 19:00:51,925 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 19:00:51,925 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 19:00:51,925 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 19:00:51,925 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:00:51,925 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-21 19:00:51,925 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:00:51,926 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:00:51,926 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:00:51,926 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:00:51,926 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:00:51,926 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:00:51,926 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:00:51,926 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:00:51,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:00:51,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:00:51,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:00:51,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:00:51,927 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:00:51,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:00:51,928 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:00:51,928 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:00:51,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:00:51,928 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:00:51,928 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:00:51,928 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:00:51,928 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:00:51,929 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:00:51,929 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:00:51,929 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:00:51,929 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:00:51,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:00:51,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:00:51,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:00:53,363 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:00:53,363 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:00:53,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:00:53 BoogieIcfgContainer [2021-02-21 19:00:53,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:00:53,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:00:53,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:00:53,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:00:53,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:00:51" (1/3) ... [2021-02-21 19:00:53,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1274f872 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:00:53, skipping insertion in model container [2021-02-21 19:00:53,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:51" (2/3) ... [2021-02-21 19:00:53,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1274f872 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:00:53, skipping insertion in model container [2021-02-21 19:00:53,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:00:53" (3/3) ... [2021-02-21 19:00:53,375 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product64.cil.c [2021-02-21 19:00:53,381 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:00:53,386 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:00:53,402 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:00:53,421 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:00:53,421 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:00:53,422 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:00:53,422 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:00:53,422 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:00:53,422 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:00:53,422 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:00:53,422 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:00:53,445 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states. [2021-02-21 19:00:53,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-21 19:00:53,467 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:00:53,468 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] [2021-02-21 19:00:53,468 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:00:53,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:00:53,474 INFO L82 PathProgramCache]: Analyzing trace with hash -353660962, now seen corresponding path program 1 times [2021-02-21 19:00:53,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:00:53,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471927678] [2021-02-21 19:00:53,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:00:53,560 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:00:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:53,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:53,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:53,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:53,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:54,305 WARN L202 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:00:54,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:00:54,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:54,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:54,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:54,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:00:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:54,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:54,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:54,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:00:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:54,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:54,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:54,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:00:54,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:54,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:54,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:54,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:00:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:54,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:54,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:54,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:00:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:54,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:54,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:54,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:00:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:54,461 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:54,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:54,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 19:00:54,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:54,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:54,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:54,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:00:54,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471927678] [2021-02-21 19:00:54,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:00:54,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:00:54,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552569925] [2021-02-21 19:00:54,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:00:54,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:00:54,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:00:54,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:00:54,586 INFO L87 Difference]: Start difference. First operand 368 states. Second operand 3 states. [2021-02-21 19:00:56,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:00:56,681 INFO L93 Difference]: Finished difference Result 602 states and 716 transitions. [2021-02-21 19:00:56,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:00:56,684 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-21 19:00:56,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:00:56,701 INFO L225 Difference]: With dead ends: 602 [2021-02-21 19:00:56,702 INFO L226 Difference]: Without dead ends: 364 [2021-02-21 19:00:56,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:00:56,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2021-02-21 19:00:56,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 316. [2021-02-21 19:00:56,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2021-02-21 19:00:56,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 348 transitions. [2021-02-21 19:00:56,918 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 348 transitions. Word has length 158 [2021-02-21 19:00:56,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:00:56,919 INFO L480 AbstractCegarLoop]: Abstraction has 316 states and 348 transitions. [2021-02-21 19:00:56,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:00:56,919 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 348 transitions. [2021-02-21 19:00:56,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-21 19:00:56,924 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:00:56,924 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] [2021-02-21 19:00:56,925 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:00:56,925 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:00:56,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:00:56,926 INFO L82 PathProgramCache]: Analyzing trace with hash -2140843234, now seen corresponding path program 1 times [2021-02-21 19:00:56,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:00:56,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188867356] [2021-02-21 19:00:56,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:00:56,931 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:00:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:57,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:57,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:57,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:57,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:57,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:57,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:57,383 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:00:57,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:00:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:57,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:57,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:57,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:00:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:57,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:57,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:57,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:00:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:57,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:57,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:57,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:00:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:57,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:57,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:57,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:00:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:57,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:57,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:57,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-21 19:00:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:57,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:57,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:57,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 19:00:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:57,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:57,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:57,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 19:00:57,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:57,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:57,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:57,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:00:57,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188867356] [2021-02-21 19:00:57,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:00:57,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:00:57,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477707207] [2021-02-21 19:00:57,503 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:00:57,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:00:57,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:00:57,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:00:57,504 INFO L87 Difference]: Start difference. First operand 316 states and 348 transitions. Second operand 4 states. [2021-02-21 19:00:58,232 WARN L202 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:00:59,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:00:59,734 INFO L93 Difference]: Finished difference Result 508 states and 578 transitions. [2021-02-21 19:00:59,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:00:59,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-21 19:00:59,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:00:59,754 INFO L225 Difference]: With dead ends: 508 [2021-02-21 19:00:59,755 INFO L226 Difference]: Without dead ends: 347 [2021-02-21 19:00:59,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 19:00:59,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-02-21 19:00:59,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 306. [2021-02-21 19:00:59,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2021-02-21 19:00:59,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 335 transitions. [2021-02-21 19:00:59,942 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 335 transitions. Word has length 159 [2021-02-21 19:00:59,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:00:59,942 INFO L480 AbstractCegarLoop]: Abstraction has 306 states and 335 transitions. [2021-02-21 19:00:59,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:00:59,943 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 335 transitions. [2021-02-21 19:00:59,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-21 19:00:59,946 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:00:59,946 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] [2021-02-21 19:00:59,946 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:00:59,946 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:00:59,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:00:59,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1125048418, now seen corresponding path program 1 times [2021-02-21 19:00:59,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:00:59,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863168556] [2021-02-21 19:00:59,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:00:59,952 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:00:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:00,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:00,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:00,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:00,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:00,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:00,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:00,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:00,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:00,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:00,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:01:00,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:00,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:00,400 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:01:00,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:01:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:00,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:00,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:00,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:01:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:00,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:00,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:00,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:01:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:00,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:00,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:00,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:01:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:00,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:00,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:00,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:00,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:01:00,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:00,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:01:00,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:01:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:00,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:00,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:00,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:01:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:00,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:00,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:00,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 19:01:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:00,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:00,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:00,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-21 19:01:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:00,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:00,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:00,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-21 19:01:00,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:00,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:00,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:00,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:01:00,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863168556] [2021-02-21 19:01:00,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:01:00,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 19:01:00,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16734280] [2021-02-21 19:01:00,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 19:01:00,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:01:00,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 19:01:00,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 19:01:00,638 INFO L87 Difference]: Start difference. First operand 306 states and 335 transitions. Second operand 10 states. [2021-02-21 19:01:01,307 WARN L202 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:01:01,777 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:01:02,171 WARN L202 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 19:01:02,570 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:01:02,949 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:01:03,302 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:01:04,356 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:01:08,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:01:08,144 INFO L93 Difference]: Finished difference Result 862 states and 1007 transitions. [2021-02-21 19:01:08,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 19:01:08,145 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-21 19:01:08,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:01:08,152 INFO L225 Difference]: With dead ends: 862 [2021-02-21 19:01:08,152 INFO L226 Difference]: Without dead ends: 671 [2021-02-21 19:01:08,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-21 19:01:08,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2021-02-21 19:01:08,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 568. [2021-02-21 19:01:08,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 568 states. [2021-02-21 19:01:08,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 641 transitions. [2021-02-21 19:01:08,419 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 641 transitions. Word has length 172 [2021-02-21 19:01:08,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:01:08,420 INFO L480 AbstractCegarLoop]: Abstraction has 568 states and 641 transitions. [2021-02-21 19:01:08,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 19:01:08,420 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 641 transitions. [2021-02-21 19:01:08,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-21 19:01:08,424 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:01:08,424 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] [2021-02-21 19:01:08,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:01:08,425 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:01:08,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:01:08,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1543091679, now seen corresponding path program 1 times [2021-02-21 19:01:08,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:01:08,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769425751] [2021-02-21 19:01:08,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:01:08,429 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:01:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:08,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:08,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:08,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:08,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:08,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:08,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:08,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:08,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:08,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:08,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:08,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:08,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:08,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:08,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:08,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:08,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:08,832 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:01:08,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:01:08,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:08,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:08,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:08,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:08,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:01:08,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:01:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:08,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:08,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:08,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:01:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:08,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:08,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:08,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:01:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:08,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:08,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:08,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:01:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:08,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:08,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:08,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:01:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:08,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:08,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:08,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 19:01:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:08,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:08,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:08,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-02-21 19:01:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:08,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:08,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:08,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:08,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:08,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:08,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:08,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-02-21 19:01:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:08,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:08,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:08,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:01:08,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1769425751] [2021-02-21 19:01:08,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:01:08,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 19:01:08,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607850765] [2021-02-21 19:01:08,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 19:01:08,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:01:08,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 19:01:08,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 19:01:08,999 INFO L87 Difference]: Start difference. First operand 568 states and 641 transitions. Second operand 9 states. [2021-02-21 19:01:09,591 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:01:11,982 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:01:12,439 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:01:12,938 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:01:13,410 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:01:13,835 WARN L202 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:01:14,253 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:01:14,631 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:01:16,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:01:16,301 INFO L93 Difference]: Finished difference Result 1572 states and 1896 transitions. [2021-02-21 19:01:16,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 19:01:16,301 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2021-02-21 19:01:16,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:01:16,309 INFO L225 Difference]: With dead ends: 1572 [2021-02-21 19:01:16,309 INFO L226 Difference]: Without dead ends: 1119 [2021-02-21 19:01:16,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-21 19:01:16,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2021-02-21 19:01:16,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1008. [2021-02-21 19:01:16,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1008 states. [2021-02-21 19:01:16,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1164 transitions. [2021-02-21 19:01:16,767 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1164 transitions. Word has length 177 [2021-02-21 19:01:16,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:01:16,768 INFO L480 AbstractCegarLoop]: Abstraction has 1008 states and 1164 transitions. [2021-02-21 19:01:16,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 19:01:16,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1164 transitions. [2021-02-21 19:01:16,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-21 19:01:16,774 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:01:16,774 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] [2021-02-21 19:01:16,775 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:01:16,775 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:01:16,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:01:16,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1490946969, now seen corresponding path program 1 times [2021-02-21 19:01:16,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:01:16,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941676492] [2021-02-21 19:01:16,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:01:16,779 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:01:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:16,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:16,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:16,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:16,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:16,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:16,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:16,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:16,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:16,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:16,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:16,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:16,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:16,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:16,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:17,203 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:01:17,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:01:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:17,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:17,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:17,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:17,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:17,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:01:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:17,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:17,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:17,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:01:17,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:17,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:17,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:17,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:01:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:17,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:17,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:17,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:01:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:17,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:17,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:17,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:01:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:17,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:17,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:17,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 19:01:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:17,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:17,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:17,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-21 19:01:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:17,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:17,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:17,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-21 19:01:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:17,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:17,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:17,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-02-21 19:01:17,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:17,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:17,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:17,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:01:17,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941676492] [2021-02-21 19:01:17,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:01:17,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:01:17,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804982284] [2021-02-21 19:01:17,354 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:01:17,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:01:17,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:01:17,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:01:17,355 INFO L87 Difference]: Start difference. First operand 1008 states and 1164 transitions. Second operand 6 states. [2021-02-21 19:01:17,962 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:01:21,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:01:21,148 INFO L93 Difference]: Finished difference Result 2258 states and 2721 transitions. [2021-02-21 19:01:21,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 19:01:21,148 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2021-02-21 19:01:21,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:01:21,156 INFO L225 Difference]: With dead ends: 2258 [2021-02-21 19:01:21,156 INFO L226 Difference]: Without dead ends: 1365 [2021-02-21 19:01:21,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 19:01:21,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2021-02-21 19:01:21,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1265. [2021-02-21 19:01:21,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1265 states. [2021-02-21 19:01:21,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1440 transitions. [2021-02-21 19:01:21,666 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 1440 transitions. Word has length 182 [2021-02-21 19:01:21,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:01:21,667 INFO L480 AbstractCegarLoop]: Abstraction has 1265 states and 1440 transitions. [2021-02-21 19:01:21,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:01:21,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 1440 transitions. [2021-02-21 19:01:21,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-21 19:01:21,670 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:01:21,670 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] [2021-02-21 19:01:21,671 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:01:21,671 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:01:21,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:01:21,671 INFO L82 PathProgramCache]: Analyzing trace with hash -2131034746, now seen corresponding path program 1 times [2021-02-21 19:01:21,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:01:21,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518858161] [2021-02-21 19:01:21,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:01:21,675 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:01:21,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 19:01:21,750 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 19:01:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 19:01:21,824 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 19:01:22,005 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 19:01:22,005 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 19:01:22,006 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 19:01:22,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 07:01:22 BoogieIcfgContainer [2021-02-21 19:01:22,029 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 19:01:22,030 INFO L168 Benchmark]: Toolchain (without parser) took 30949.23 ms. Allocated memory was 162.5 MB in the beginning and 629.1 MB in the end (delta: 466.6 MB). Free memory was 137.6 MB in the beginning and 527.6 MB in the end (delta: -390.0 MB). Peak memory consumption was 78.1 MB. Max. memory is 8.0 GB. [2021-02-21 19:01:22,031 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 162.5 MB. Free memory is still 139.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 19:01:22,031 INFO L168 Benchmark]: CACSL2BoogieTranslator took 628.35 ms. Allocated memory is still 162.5 MB. Free memory was 136.5 MB in the beginning and 114.5 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-21 19:01:22,032 INFO L168 Benchmark]: Boogie Preprocessor took 82.91 ms. Allocated memory is still 162.5 MB. Free memory was 114.5 MB in the beginning and 110.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-21 19:01:22,032 INFO L168 Benchmark]: RCFGBuilder took 1552.64 ms. Allocated memory is still 162.5 MB. Free memory was 110.4 MB in the beginning and 87.5 MB in the end (delta: 22.9 MB). Peak memory consumption was 60.8 MB. Max. memory is 8.0 GB. [2021-02-21 19:01:22,033 INFO L168 Benchmark]: TraceAbstraction took 28661.05 ms. Allocated memory was 162.5 MB in the beginning and 629.1 MB in the end (delta: 466.6 MB). Free memory was 87.0 MB in the beginning and 527.6 MB in the end (delta: -440.6 MB). Peak memory consumption was 27.1 MB. Max. memory is 8.0 GB. [2021-02-21 19:01:22,035 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 162.5 MB. Free memory is still 139.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 628.35 ms. Allocated memory is still 162.5 MB. Free memory was 136.5 MB in the beginning and 114.5 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 82.91 ms. Allocated memory is still 162.5 MB. Free memory was 114.5 MB in the beginning and 110.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1552.64 ms. Allocated memory is still 162.5 MB. Free memory was 110.4 MB in the beginning and 87.5 MB in the end (delta: 22.9 MB). Peak memory consumption was 60.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 28661.05 ms. Allocated memory was 162.5 MB in the beginning and 629.1 MB in the end (delta: 466.6 MB). Free memory was 87.0 MB in the beginning and 527.6 MB in the end (delta: -440.6 MB). Peak memory consumption was 27.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 998]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L92] int pumpRunning = 0; [L93] int systemActive = 1; [L429] int waterLevel = 1; [L430] int methaneLevelCritical = 0; [L701] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L898] int cleanupTimeShifts = 4; [L971] int retValue_acc ; [L972] int tmp ; [L976] FCALL select_helpers() [L977] FCALL select_features() [L978] CALL, EXPR valid_product() [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L978] RET, EXPR valid_product() [L978] tmp = valid_product() [L980] COND TRUE \read(tmp) [L982] FCALL setup() [L983] CALL runTest() [L965] CALL test() [L360] int splverifierCounter ; [L361] int tmp ; [L362] int tmp___0 ; [L363] int tmp___1 ; [L364] int tmp___2 ; [L367] splverifierCounter = 0 [L369] COND TRUE 1 [L371] COND TRUE splverifierCounter < 4 [L377] tmp = __VERIFIER_nondet_int() [L379] COND TRUE \read(tmp) [L381] CALL waterRise() [L447] COND TRUE waterLevel < 2 [L448] waterLevel = waterLevel + 1 [L381] RET waterRise() [L387] tmp___0 = __VERIFIER_nondet_int() [L389] COND FALSE !(\read(tmp___0)) [L397] tmp___2 = __VERIFIER_nondet_int() [L399] COND FALSE !(\read(tmp___2)) [L405] tmp___1 = __VERIFIER_nondet_int() [L407] COND TRUE \read(tmp___1) [L409] CALL stopSystem() [L336] COND FALSE !(\read(pumpRunning)) [L343] systemActive = 0 [L409] RET stopSystem() [L416] CALL timeShift() [L100] COND FALSE !(\read(pumpRunning)) [L107] COND FALSE !(\read(systemActive)) [L115] CALL __utac_acc__Specification3_spec__1() [L1004] int tmp ; [L1005] int tmp___0 ; [L1006] int tmp___1 ; [L1010] CALL, EXPR isMethaneLevelCritical() [L468] int retValue_acc ; [L471] retValue_acc = methaneLevelCritical [L472] return (retValue_acc); [L1010] RET, EXPR isMethaneLevelCritical() [L1010] tmp = isMethaneLevelCritical() [L1012] COND FALSE !(\read(tmp)) [L1016] CALL, EXPR getWaterLevel() [L500] int retValue_acc ; [L503] retValue_acc = waterLevel [L504] return (retValue_acc); [L1016] RET, EXPR getWaterLevel() [L1016] tmp___0 = getWaterLevel() [L1018] COND TRUE tmp___0 == 2 [L1020] CALL, EXPR isPumpRunning() [L250] int retValue_acc ; [L253] retValue_acc = pumpRunning [L254] return (retValue_acc); [L1020] RET, EXPR isPumpRunning() [L1020] tmp___1 = isPumpRunning() [L1022] COND FALSE !(\read(tmp___1)) [L1026] CALL __automaton_fail() [L998] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 45 procedures, 683 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 28.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 23.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1507 SDtfs, 2605 SDslu, 1733 SDs, 0 SdLazy, 4504 SolverSat, 949 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 151 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 7.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1265occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 403 StatesRemovedByMinimization, 5 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...