/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 18:43:29,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 18:43:29,385 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 18:43:29,443 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 18:43:29,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 18:43:29,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 18:43:29,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 18:43:29,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 18:43:29,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 18:43:29,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 18:43:29,472 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 18:43:29,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 18:43:29,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 18:43:29,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 18:43:29,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 18:43:29,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 18:43:29,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 18:43:29,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 18:43:29,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 18:43:29,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 18:43:29,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 18:43:29,508 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 18:43:29,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 18:43:29,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 18:43:29,535 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 18:43:29,537 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 18:43:29,538 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 18:43:29,539 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 18:43:29,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 18:43:29,541 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 18:43:29,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 18:43:29,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 18:43:29,543 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 18:43:29,544 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 18:43:29,545 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 18:43:29,545 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 18:43:29,546 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 18:43:29,546 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 18:43:29,547 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 18:43:29,547 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 18:43:29,548 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 18:43:29,549 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 18:43:29,566 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 18:43:29,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 18:43:29,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 18:43:29,571 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 18:43:29,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 18:43:29,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 18:43:29,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 18:43:29,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 18:43:29,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 18:43:29,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 18:43:29,574 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 18:43:29,575 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 18:43:29,575 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 18:43:29,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 18:43:29,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 18:43:29,576 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 18:43:29,576 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 18:43:29,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 18:43:29,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:43:29,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 18:43:29,577 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 18:43:29,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 18:43:29,577 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 18:43:30,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 18:43:30,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 18:43:30,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 18:43:30,040 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 18:43:30,041 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 18:43:30,042 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product51.cil.c [2021-02-21 18:43:30,123 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58bd5ec50/84b3f41ad5de43fcae30706d579d5448/FLAGbe10ce97d [2021-02-21 18:43:30,946 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 18:43:30,946 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product51.cil.c [2021-02-21 18:43:30,963 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58bd5ec50/84b3f41ad5de43fcae30706d579d5448/FLAGbe10ce97d [2021-02-21 18:43:30,981 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58bd5ec50/84b3f41ad5de43fcae30706d579d5448 [2021-02-21 18:43:30,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 18:43:31,000 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 18:43:31,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 18:43:31,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 18:43:31,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 18:43:31,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:43:30" (1/1) ... [2021-02-21 18:43:31,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e0beede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:43:31, skipping insertion in model container [2021-02-21 18:43:31,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:43:30" (1/1) ... [2021-02-21 18:43:31,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 18:43:31,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 18:43:31,470 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_spec1_product51.cil.c[14932,14945] [2021-02-21 18:43:31,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:43:31,506 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 18:43:31,578 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_spec1_product51.cil.c[14932,14945] [2021-02-21 18:43:31,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:43:31,650 INFO L208 MainTranslator]: Completed translation [2021-02-21 18:43:31,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:43:31 WrapperNode [2021-02-21 18:43:31,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 18:43:31,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 18:43:31,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 18:43:31,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 18:43:31,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:43:31" (1/1) ... [2021-02-21 18:43:31,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:43:31" (1/1) ... [2021-02-21 18:43:31,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:43:31" (1/1) ... [2021-02-21 18:43:31,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:43:31" (1/1) ... [2021-02-21 18:43:31,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:43:31" (1/1) ... [2021-02-21 18:43:31,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:43:31" (1/1) ... [2021-02-21 18:43:31,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:43:31" (1/1) ... [2021-02-21 18:43:31,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 18:43:31,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 18:43:31,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 18:43:31,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 18:43:31,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:43:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:43:31,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 18:43:31,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 18:43:31,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 18:43:31,850 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 18:43:31,851 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 18:43:31,851 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 18:43:31,851 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 18:43:31,851 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 18:43:31,851 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 18:43:31,852 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 18:43:31,852 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 18:43:31,852 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 18:43:31,852 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 18:43:31,852 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 18:43:31,853 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 18:43:31,853 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 18:43:31,853 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 18:43:31,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 18:43:31,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 18:43:31,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 18:43:31,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 18:43:31,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 18:43:31,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 18:43:31,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 18:43:31,855 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 18:43:31,855 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 18:43:31,876 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 18:43:31,877 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 18:43:31,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2021-02-21 18:43:31,877 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 18:43:31,877 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 18:43:31,877 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 18:43:31,878 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 18:43:31,878 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 18:43:31,878 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 18:43:31,878 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 18:43:31,878 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 18:43:31,879 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 18:43:31,879 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 18:43:31,879 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 18:43:31,886 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 18:43:31,886 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 18:43:31,892 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 18:43:31,893 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 18:43:31,893 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 18:43:31,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 18:43:31,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 18:43:31,893 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 18:43:31,894 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 18:43:31,894 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 18:43:31,894 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 18:43:31,896 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 18:43:31,896 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 18:43:31,896 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 18:43:31,897 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 18:43:31,897 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 18:43:31,897 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 18:43:31,897 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 18:43:31,897 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 18:43:31,897 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 18:43:31,898 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 18:43:31,898 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 18:43:31,900 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 18:43:31,901 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2021-02-21 18:43:31,902 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 18:43:31,902 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 18:43:31,902 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 18:43:31,902 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 18:43:31,902 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 18:43:31,902 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 18:43:31,924 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 18:43:31,924 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 18:43:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 18:43:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 18:43:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 18:43:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 18:43:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 18:43:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 18:43:31,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 18:43:31,927 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 18:43:31,927 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 18:43:31,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 18:43:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 18:43:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 18:43:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 18:43:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 18:43:31,932 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 18:43:31,932 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 18:43:31,932 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 18:43:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 18:43:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 18:43:31,940 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 18:43:31,940 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 18:43:31,940 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 18:43:31,941 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 18:43:31,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 18:43:31,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 18:43:31,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 18:43:33,487 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 18:43:33,487 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 18:43:33,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:43:33 BoogieIcfgContainer [2021-02-21 18:43:33,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 18:43:33,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 18:43:33,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 18:43:33,500 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 18:43:33,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 06:43:30" (1/3) ... [2021-02-21 18:43:33,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@569d4cfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:43:33, skipping insertion in model container [2021-02-21 18:43:33,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:43:31" (2/3) ... [2021-02-21 18:43:33,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@569d4cfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:43:33, skipping insertion in model container [2021-02-21 18:43:33,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:43:33" (3/3) ... [2021-02-21 18:43:33,504 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product51.cil.c [2021-02-21 18:43:33,511 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 18:43:33,516 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 18:43:33,536 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 18:43:33,560 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 18:43:33,560 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 18:43:33,560 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 18:43:33,560 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 18:43:33,561 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 18:43:33,561 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 18:43:33,561 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 18:43:33,561 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 18:43:33,587 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states. [2021-02-21 18:43:33,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 18:43:33,609 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:43:33,610 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] [2021-02-21 18:43:33,610 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:43:33,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:43:33,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1867439208, now seen corresponding path program 1 times [2021-02-21 18:43:33,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:43:33,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378448562] [2021-02-21 18:43:33,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:43:33,707 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:43:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:34,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:34,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:34,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:34,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:34,477 WARN L202 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:43:34,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:43:34,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:34,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:34,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:34,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:43:34,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:34,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:34,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:34,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:43:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:34,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:34,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:34,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:43:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:34,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:34,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:34,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:43:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:34,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:34,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:34,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 18:43:34,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:34,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:34,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:34,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 18:43:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:34,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:34,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:34,643 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 18:43:34,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378448562] [2021-02-21 18:43:34,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:43:34,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 18:43:34,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879809265] [2021-02-21 18:43:34,653 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 18:43:34,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:43:34,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 18:43:34,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:43:34,670 INFO L87 Difference]: Start difference. First operand 330 states. Second operand 3 states. [2021-02-21 18:43:36,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:43:36,521 INFO L93 Difference]: Finished difference Result 509 states and 605 transitions. [2021-02-21 18:43:36,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 18:43:36,523 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 18:43:36,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:43:36,554 INFO L225 Difference]: With dead ends: 509 [2021-02-21 18:43:36,555 INFO L226 Difference]: Without dead ends: 315 [2021-02-21 18:43:36,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:43:36,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-02-21 18:43:36,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 272. [2021-02-21 18:43:36,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2021-02-21 18:43:36,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 296 transitions. [2021-02-21 18:43:36,766 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 296 transitions. Word has length 147 [2021-02-21 18:43:36,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:43:36,767 INFO L480 AbstractCegarLoop]: Abstraction has 272 states and 296 transitions. [2021-02-21 18:43:36,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 18:43:36,767 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 296 transitions. [2021-02-21 18:43:36,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 18:43:36,772 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:43:36,772 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] [2021-02-21 18:43:36,772 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 18:43:36,773 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:43:36,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:43:36,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1462754815, now seen corresponding path program 1 times [2021-02-21 18:43:36,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:43:36,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482551612] [2021-02-21 18:43:36,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:43:36,779 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:43:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:36,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:36,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:36,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:36,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:36,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:36,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:37,362 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:43:37,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:43:37,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:37,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:37,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:37,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:43:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:37,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:37,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:37,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:43:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:37,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:37,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:37,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:43:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:37,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:37,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:37,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:43:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:37,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:37,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:37,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 18:43:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:37,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:37,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:37,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:43:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:37,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:37,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:37,471 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 18:43:37,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482551612] [2021-02-21 18:43:37,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:43:37,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 18:43:37,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902293529] [2021-02-21 18:43:37,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 18:43:37,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:43:37,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 18:43:37,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:43:37,475 INFO L87 Difference]: Start difference. First operand 272 states and 296 transitions. Second operand 4 states. [2021-02-21 18:43:38,216 WARN L202 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:43:39,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:43:39,465 INFO L93 Difference]: Finished difference Result 419 states and 471 transitions. [2021-02-21 18:43:39,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 18:43:39,465 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 18:43:39,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:43:39,476 INFO L225 Difference]: With dead ends: 419 [2021-02-21 18:43:39,476 INFO L226 Difference]: Without dead ends: 298 [2021-02-21 18:43:39,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 18:43:39,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-02-21 18:43:39,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 262. [2021-02-21 18:43:39,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2021-02-21 18:43:39,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 283 transitions. [2021-02-21 18:43:39,620 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 283 transitions. Word has length 148 [2021-02-21 18:43:39,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:43:39,622 INFO L480 AbstractCegarLoop]: Abstraction has 262 states and 283 transitions. [2021-02-21 18:43:39,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 18:43:39,622 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 283 transitions. [2021-02-21 18:43:39,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-21 18:43:39,629 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:43:39,630 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] [2021-02-21 18:43:39,633 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 18:43:39,633 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:43:39,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:43:39,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1061125664, now seen corresponding path program 1 times [2021-02-21 18:43:39,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:43:39,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586113448] [2021-02-21 18:43:39,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:43:39,642 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:43:39,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:39,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:39,729 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:39,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:39,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:39,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:39,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:39,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:39,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:39,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:39,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:43:39,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:39,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:43:39,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:39,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:43:39,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:39,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:40,067 WARN L202 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:43:40,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:43:40,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:40,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:40,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:40,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:40,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:43:40,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:43:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:40,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:40,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:40,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:43:40,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:40,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:40,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:40,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:43:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:40,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:40,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:40,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:40,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:43:40,225 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 18:43:40,226 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 18:43:40,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:43:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:40,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:40,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:40,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 18:43:40,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:40,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:40,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:40,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 18:43:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:40,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:40,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:40,301 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 18:43:40,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586113448] [2021-02-21 18:43:40,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:43:40,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:43:40,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250243813] [2021-02-21 18:43:40,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:43:40,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:43:40,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:43:40,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:43:40,312 INFO L87 Difference]: Start difference. First operand 262 states and 283 transitions. Second operand 9 states. [2021-02-21 18:43:40,915 WARN L202 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:43:41,398 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:43:41,771 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:43:42,152 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:43:42,483 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:43:42,852 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:43:43,965 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:43:46,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:43:46,467 INFO L93 Difference]: Finished difference Result 687 states and 790 transitions. [2021-02-21 18:43:46,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 18:43:46,468 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-21 18:43:46,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:43:46,474 INFO L225 Difference]: With dead ends: 687 [2021-02-21 18:43:46,475 INFO L226 Difference]: Without dead ends: 540 [2021-02-21 18:43:46,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-21 18:43:46,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-02-21 18:43:46,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 473. [2021-02-21 18:43:46,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2021-02-21 18:43:46,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 529 transitions. [2021-02-21 18:43:46,685 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 529 transitions. Word has length 157 [2021-02-21 18:43:46,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:43:46,685 INFO L480 AbstractCegarLoop]: Abstraction has 473 states and 529 transitions. [2021-02-21 18:43:46,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:43:46,686 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 529 transitions. [2021-02-21 18:43:46,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-21 18:43:46,689 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:43:46,689 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] [2021-02-21 18:43:46,690 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 18:43:46,690 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:43:46,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:43:46,690 INFO L82 PathProgramCache]: Analyzing trace with hash -416365942, now seen corresponding path program 1 times [2021-02-21 18:43:46,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:43:46,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038413147] [2021-02-21 18:43:46,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:43:46,694 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:43:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:46,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:46,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:46,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:46,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:46,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:46,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:46,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:46,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:46,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:46,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:46,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:46,799 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:46,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:46,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:47,205 WARN L202 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:43:47,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:43:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:47,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:47,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:47,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:47,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:47,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:43:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:47,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:47,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:47,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:43:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:47,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:47,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:47,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:43:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:47,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:47,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:47,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:43:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:47,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:47,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:47,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 18:43:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:47,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:47,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:47,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-21 18:43:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:47,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:47,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:47,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:47,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:47,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:47,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:47,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-21 18:43:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:47,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:47,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:47,442 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 18:43:47,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038413147] [2021-02-21 18:43:47,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:43:47,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:43:47,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878488528] [2021-02-21 18:43:47,444 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:43:47,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:43:47,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:43:47,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:43:47,446 INFO L87 Difference]: Start difference. First operand 473 states and 529 transitions. Second operand 9 states. [2021-02-21 18:43:48,127 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:43:49,843 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:43:50,250 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:43:50,770 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:43:51,188 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:43:51,574 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:43:51,962 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:43:52,411 WARN L202 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:43:53,123 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:43:54,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:43:54,391 INFO L93 Difference]: Finished difference Result 1304 states and 1559 transitions. [2021-02-21 18:43:54,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 18:43:54,392 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2021-02-21 18:43:54,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:43:54,399 INFO L225 Difference]: With dead ends: 1304 [2021-02-21 18:43:54,399 INFO L226 Difference]: Without dead ends: 946 [2021-02-21 18:43:54,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-02-21 18:43:54,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2021-02-21 18:43:54,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 792. [2021-02-21 18:43:54,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792 states. [2021-02-21 18:43:54,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 899 transitions. [2021-02-21 18:43:54,736 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 899 transitions. Word has length 166 [2021-02-21 18:43:54,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:43:54,737 INFO L480 AbstractCegarLoop]: Abstraction has 792 states and 899 transitions. [2021-02-21 18:43:54,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:43:54,737 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 899 transitions. [2021-02-21 18:43:54,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-21 18:43:54,741 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:43:54,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:43:54,741 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 18:43:54,742 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:43:54,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:43:54,742 INFO L82 PathProgramCache]: Analyzing trace with hash 2083222157, now seen corresponding path program 1 times [2021-02-21 18:43:54,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:43:54,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144817105] [2021-02-21 18:43:54,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:43:54,746 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:43:54,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:54,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:54,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:54,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:54,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:54,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:54,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:54,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:54,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:54,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:54,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:54,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:54,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:54,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:54,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:54,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:54,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:54,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:54,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:55,134 WARN L202 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:43:55,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:43:55,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:55,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:55,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:55,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:55,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:55,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:43:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:55,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:55,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:55,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:43:55,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:55,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:55,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:55,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:43:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:55,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:55,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:55,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:43:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:55,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:55,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:55,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 18:43:55,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:55,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:55,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:55,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-21 18:43:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:55,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:55,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:55,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 18:43:55,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:55,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:55,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:55,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-21 18:43:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:55,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:55,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:55,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:55,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:55,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:55,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:55,312 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 18:43:55,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144817105] [2021-02-21 18:43:55,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:43:55,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 18:43:55,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429435637] [2021-02-21 18:43:55,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 18:43:55,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:43:55,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 18:43:55,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:43:55,315 INFO L87 Difference]: Start difference. First operand 792 states and 899 transitions. Second operand 10 states. [2021-02-21 18:43:55,982 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:43:57,624 WARN L202 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:43:58,074 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:43:58,525 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:43:59,033 WARN L202 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:43:59,440 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:44:00,235 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:44:00,597 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:44:01,066 WARN L202 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:44:02,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:44:02,594 INFO L93 Difference]: Finished difference Result 2033 states and 2502 transitions. [2021-02-21 18:44:02,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-21 18:44:02,595 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 171 [2021-02-21 18:44:02,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:44:02,607 INFO L225 Difference]: With dead ends: 2033 [2021-02-21 18:44:02,608 INFO L226 Difference]: Without dead ends: 1356 [2021-02-21 18:44:02,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-02-21 18:44:02,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2021-02-21 18:44:03,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 1094. [2021-02-21 18:44:03,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1094 states. [2021-02-21 18:44:03,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1262 transitions. [2021-02-21 18:44:03,107 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1262 transitions. Word has length 171 [2021-02-21 18:44:03,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:44:03,108 INFO L480 AbstractCegarLoop]: Abstraction has 1094 states and 1262 transitions. [2021-02-21 18:44:03,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 18:44:03,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1262 transitions. [2021-02-21 18:44:03,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-02-21 18:44:03,112 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:44:03,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:44:03,113 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 18:44:03,113 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:44:03,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:44:03,114 INFO L82 PathProgramCache]: Analyzing trace with hash -70704157, now seen corresponding path program 1 times [2021-02-21 18:44:03,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:44:03,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777296271] [2021-02-21 18:44:03,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:44:03,117 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:44:03,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:03,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:03,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:03,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:03,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:03,490 WARN L202 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:44:03,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:44:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:03,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:03,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:03,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:44:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:03,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:03,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:03,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:44:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:03,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:03,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:03,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:44:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:03,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:03,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:03,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:44:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:03,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:03,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:03,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 18:44:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:03,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:03,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:03,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:44:03,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:03,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:03,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:03,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:03,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:03,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:44:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:03,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:03,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:03,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:03,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:03,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:03,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:03,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:03,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:03,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:44:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:03,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:03,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:03,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:03,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:44:03,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:03,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:44:03,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:03,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:44:03,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:44:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:03,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:03,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:03,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:44:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:03,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:03,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:03,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-02-21 18:44:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:03,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:03,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:03,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-02-21 18:44:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:03,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:03,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:03,730 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 18:44:03,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777296271] [2021-02-21 18:44:03,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:44:03,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 18:44:03,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113562712] [2021-02-21 18:44:03,732 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 18:44:03,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:44:03,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 18:44:03,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:44:03,733 INFO L87 Difference]: Start difference. First operand 1094 states and 1262 transitions. Second operand 10 states. [2021-02-21 18:44:05,400 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:44:05,819 WARN L202 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:44:06,301 WARN L202 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-21 18:44:06,769 WARN L202 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:44:07,220 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:44:07,611 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:44:09,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:44:09,472 INFO L93 Difference]: Finished difference Result 2477 states and 3031 transitions. [2021-02-21 18:44:09,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 18:44:09,474 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 200 [2021-02-21 18:44:09,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:44:09,487 INFO L225 Difference]: With dead ends: 2477 [2021-02-21 18:44:09,487 INFO L226 Difference]: Without dead ends: 1498 [2021-02-21 18:44:09,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-02-21 18:44:09,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2021-02-21 18:44:09,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1132. [2021-02-21 18:44:09,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1132 states. [2021-02-21 18:44:09,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1302 transitions. [2021-02-21 18:44:09,950 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1302 transitions. Word has length 200 [2021-02-21 18:44:09,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:44:09,951 INFO L480 AbstractCegarLoop]: Abstraction has 1132 states and 1302 transitions. [2021-02-21 18:44:09,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 18:44:09,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1302 transitions. [2021-02-21 18:44:09,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-02-21 18:44:09,956 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:44:09,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:44:09,956 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 18:44:09,956 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:44:09,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:44:09,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1044574333, now seen corresponding path program 1 times [2021-02-21 18:44:09,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:44:09,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581700562] [2021-02-21 18:44:09,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:44:09,960 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:44:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:10,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:10,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:10,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:10,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:10,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:10,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:10,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:10,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:10,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:10,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:10,323 WARN L202 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:44:10,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:44:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:10,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:10,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:10,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:44:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:10,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:10,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:10,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:44:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:10,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:10,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:10,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:44:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:10,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:10,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:10,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:10,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:44:10,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:10,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:44:10,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:44:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:10,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:10,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:10,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 18:44:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:10,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:10,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:10,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:44:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:10,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:10,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:10,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:10,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:10,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:44:10,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:10,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:10,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:10,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:10,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:10,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:44:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:10,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:10,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:10,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:10,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:10,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:10,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:10,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:10,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:10,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:44:10,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:10,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:10,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:10,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:10,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:10,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:10,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:10,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:44:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:10,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:10,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:10,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-02-21 18:44:10,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:10,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:10,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:10,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-02-21 18:44:10,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:10,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:10,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:10,647 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 18:44:10,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581700562] [2021-02-21 18:44:10,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:44:10,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-21 18:44:10,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27161102] [2021-02-21 18:44:10,648 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-21 18:44:10,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:44:10,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-21 18:44:10,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-02-21 18:44:10,649 INFO L87 Difference]: Start difference. First operand 1132 states and 1302 transitions. Second operand 13 states. [2021-02-21 18:44:11,383 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:44:11,767 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:44:12,140 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:44:12,519 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:44:12,908 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:44:14,025 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:44:14,430 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:44:14,848 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:44:15,302 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:44:15,669 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:44:17,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:44:17,882 INFO L93 Difference]: Finished difference Result 2559 states and 3170 transitions. [2021-02-21 18:44:17,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-21 18:44:17,882 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 200 [2021-02-21 18:44:17,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:44:17,893 INFO L225 Difference]: With dead ends: 2559 [2021-02-21 18:44:17,894 INFO L226 Difference]: Without dead ends: 1542 [2021-02-21 18:44:17,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2021-02-21 18:44:17,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2021-02-21 18:44:18,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1156. [2021-02-21 18:44:18,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1156 states. [2021-02-21 18:44:18,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1326 transitions. [2021-02-21 18:44:18,433 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1326 transitions. Word has length 200 [2021-02-21 18:44:18,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:44:18,434 INFO L480 AbstractCegarLoop]: Abstraction has 1156 states and 1326 transitions. [2021-02-21 18:44:18,434 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-21 18:44:18,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1326 transitions. [2021-02-21 18:44:18,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-02-21 18:44:18,438 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:44:18,439 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:44:18,439 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 18:44:18,439 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:44:18,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:44:18,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1610098982, now seen corresponding path program 1 times [2021-02-21 18:44:18,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:44:18,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264690867] [2021-02-21 18:44:18,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:44:18,443 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:44:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:18,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:18,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:18,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:18,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:18,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:18,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:18,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:18,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:18,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:18,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:44:18,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:18,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:18,817 WARN L202 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:44:18,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:44:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:18,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:18,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:18,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:18,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:44:18,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:44:18,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:18,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:18,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:18,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:44:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:18,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:18,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:18,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:44:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:18,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:18,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:18,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:44:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:18,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:18,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:18,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 18:44:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:18,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:18,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:18,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:44:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:18,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:18,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:18,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:18,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:44:18,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:44:18,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:18,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:18,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:18,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:18,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:44:18,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:44:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:18,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:18,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:18,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:18,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:44:18,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:44:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:18,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:18,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:18,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:18,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:44:18,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:44:18,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:18,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:18,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:18,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-02-21 18:44:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:18,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:18,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:18,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-02-21 18:44:18,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:44:18,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:44:18,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:44:19,017 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 18:44:19,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1264690867] [2021-02-21 18:44:19,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:44:19,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 18:44:19,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210449336] [2021-02-21 18:44:19,018 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 18:44:19,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:44:19,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 18:44:19,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-21 18:44:19,019 INFO L87 Difference]: Start difference. First operand 1156 states and 1326 transitions. Second operand 7 states. [2021-02-21 18:44:19,689 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:44:20,452 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:44:23,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:44:23,988 INFO L93 Difference]: Finished difference Result 3857 states and 4804 transitions. [2021-02-21 18:44:23,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-21 18:44:23,989 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 200 [2021-02-21 18:44:23,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:44:24,008 INFO L225 Difference]: With dead ends: 3857 [2021-02-21 18:44:24,008 INFO L226 Difference]: Without dead ends: 2816 [2021-02-21 18:44:24,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2021-02-21 18:44:24,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2816 states. [2021-02-21 18:44:25,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2816 to 2312. [2021-02-21 18:44:25,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2312 states. [2021-02-21 18:44:25,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2312 states to 2312 states and 2682 transitions. [2021-02-21 18:44:25,246 INFO L78 Accepts]: Start accepts. Automaton has 2312 states and 2682 transitions. Word has length 200 [2021-02-21 18:44:25,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:44:25,247 INFO L480 AbstractCegarLoop]: Abstraction has 2312 states and 2682 transitions. [2021-02-21 18:44:25,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 18:44:25,247 INFO L276 IsEmpty]: Start isEmpty. Operand 2312 states and 2682 transitions. [2021-02-21 18:44:25,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-02-21 18:44:25,252 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:44:25,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:44:25,253 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 18:44:25,253 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:44:25,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:44:25,253 INFO L82 PathProgramCache]: Analyzing trace with hash 206217637, now seen corresponding path program 1 times [2021-02-21 18:44:25,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:44:25,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528801955] [2021-02-21 18:44:25,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:44:25,257 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:44:25,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:44:25,327 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:44:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:44:25,397 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:44:25,634 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 18:44:25,634 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 18:44:25,637 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-21 18:44:25,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 06:44:25 BoogieIcfgContainer [2021-02-21 18:44:25,664 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 18:44:25,665 INFO L168 Benchmark]: Toolchain (without parser) took 54678.78 ms. Allocated memory was 151.0 MB in the beginning and 893.4 MB in the end (delta: 742.4 MB). Free memory was 126.5 MB in the beginning and 653.2 MB in the end (delta: -526.7 MB). Peak memory consumption was 215.9 MB. Max. memory is 8.0 GB. [2021-02-21 18:44:25,665 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 125.5 MB in the end (delta: 107.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 18:44:25,666 INFO L168 Benchmark]: CACSL2BoogieTranslator took 649.63 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 104.4 MB in the end (delta: 21.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-21 18:44:25,666 INFO L168 Benchmark]: Boogie Preprocessor took 93.50 ms. Allocated memory is still 151.0 MB. Free memory was 104.4 MB in the beginning and 100.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-21 18:44:25,666 INFO L168 Benchmark]: RCFGBuilder took 1746.00 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 100.4 MB in the beginning and 154.2 MB in the end (delta: -53.8 MB). Peak memory consumption was 54.3 MB. Max. memory is 8.0 GB. [2021-02-21 18:44:25,667 INFO L168 Benchmark]: TraceAbstraction took 52167.98 ms. Allocated memory was 194.0 MB in the beginning and 893.4 MB in the end (delta: 699.4 MB). Free memory was 153.7 MB in the beginning and 653.2 MB in the end (delta: -499.5 MB). Peak memory consumption was 199.3 MB. Max. memory is 8.0 GB. [2021-02-21 18:44:25,668 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 125.5 MB in the end (delta: 107.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 649.63 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 104.4 MB in the end (delta: 21.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 93.50 ms. Allocated memory is still 151.0 MB. Free memory was 104.4 MB in the beginning and 100.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1746.00 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 100.4 MB in the beginning and 154.2 MB in the end (delta: -53.8 MB). Peak memory consumption was 54.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 52167.98 ms. Allocated memory was 194.0 MB in the beginning and 893.4 MB in the end (delta: 699.4 MB). Free memory was 153.7 MB in the beginning and 653.2 MB in the end (delta: -499.5 MB). Peak memory consumption was 199.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 706]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L123] int pumpRunning = 0; [L124] int systemActive = 1; [L505] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L775] int cleanupTimeShifts = 4; [L872] int waterLevel = 1; [L873] int methaneLevelCritical = 0; [L848] int retValue_acc ; [L849] int tmp ; [L853] FCALL select_helpers() [L854] FCALL select_features() [L855] CALL, EXPR valid_product() [L740] int retValue_acc ; [L743] retValue_acc = 1 [L744] return (retValue_acc); [L855] RET, EXPR valid_product() [L855] tmp = valid_product() [L857] COND TRUE \read(tmp) [L859] FCALL setup() [L860] CALL runTest() [L842] CALL test() [L48] int splverifierCounter ; [L49] int tmp ; [L50] int tmp___0 ; [L51] int tmp___1 ; [L52] int tmp___2 ; [L55] splverifierCounter = 0 [L57] COND TRUE 1 [L59] COND TRUE splverifierCounter < 4 [L65] tmp = __VERIFIER_nondet_int() [L67] COND TRUE \read(tmp) [L69] CALL waterRise() [L890] COND TRUE waterLevel < 2 [L891] waterLevel = waterLevel + 1 [L69] RET waterRise() [L75] tmp___0 = __VERIFIER_nondet_int() [L77] COND TRUE \read(tmp___0) [L79] CALL changeMethaneLevel() [L902] COND FALSE !(\read(methaneLevelCritical)) [L905] methaneLevelCritical = 1 [L79] RET changeMethaneLevel() [L85] tmp___2 = __VERIFIER_nondet_int() [L87] COND TRUE \read(tmp___2) [L102] CALL timeShift() [L131] COND FALSE !(\read(pumpRunning)) [L138] COND TRUE \read(systemActive) [L140] CALL processEnvironment() [L186] int tmp ; [L189] COND FALSE !(\read(pumpRunning)) [L204] CALL processEnvironment__wrappee__highWaterSensor() [L160] int tmp ; [L163] COND TRUE ! pumpRunning [L165] CALL, EXPR isHighWaterLevel() [L283] int retValue_acc ; [L284] int tmp ; [L285] int tmp___0 ; [L289] CALL, EXPR isHighWaterSensorDry() [L952] int retValue_acc ; [L955] COND FALSE !(waterLevel < 2) [L959] retValue_acc = 0 [L960] return (retValue_acc); [L289] RET, EXPR isHighWaterSensorDry() [L289] tmp = isHighWaterSensorDry() [L291] COND FALSE !(\read(tmp)) [L294] tmp___0 = 1 [L296] retValue_acc = tmp___0 [L297] return (retValue_acc); [L165] RET, EXPR isHighWaterLevel() [L165] tmp = isHighWaterLevel() [L167] COND TRUE \read(tmp) [L169] CALL activatePump() [L214] pumpRunning = 1 [L169] RET activatePump() [L204] RET processEnvironment__wrappee__highWaterSensor() [L140] RET processEnvironment() [L146] CALL __utac_acc__Specification1_spec__1() [L750] int tmp ; [L751] int tmp___0 ; [L755] CALL, EXPR isMethaneLevelCritical() [L911] int retValue_acc ; [L914] retValue_acc = methaneLevelCritical [L915] return (retValue_acc); [L755] RET, EXPR isMethaneLevelCritical() [L755] tmp = isMethaneLevelCritical() [L757] COND TRUE \read(tmp) [L759] CALL, EXPR isPumpRunning() [L238] int retValue_acc ; [L241] retValue_acc = pumpRunning [L242] return (retValue_acc); [L759] RET, EXPR isPumpRunning() [L759] tmp___0 = isPumpRunning() [L761] COND TRUE \read(tmp___0) [L763] CALL __automaton_fail() [L706] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 652 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 52.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 42.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2072 SDtfs, 3905 SDslu, 3849 SDs, 0 SdLazy, 8305 SolverSat, 1223 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 299 GetRequests, 188 SyntacticMatches, 4 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 19.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2312occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 1818 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...