/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 18:59:16,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 18:59:16,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 18:59:16,257 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 18:59:16,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 18:59:16,259 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 18:59:16,261 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 18:59:16,264 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 18:59:16,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 18:59:16,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 18:59:16,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 18:59:16,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 18:59:16,271 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 18:59:16,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 18:59:16,273 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 18:59:16,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 18:59:16,276 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 18:59:16,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 18:59:16,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 18:59:16,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 18:59:16,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 18:59:16,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 18:59:16,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 18:59:16,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 18:59:16,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 18:59:16,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 18:59:16,322 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 18:59:16,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 18:59:16,329 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 18:59:16,330 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 18:59:16,331 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 18:59:16,332 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 18:59:16,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 18:59:16,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 18:59:16,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 18:59:16,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 18:59:16,341 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 18:59:16,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 18:59:16,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 18:59:16,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 18:59:16,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 18:59:16,344 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 18:59:16,368 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 18:59:16,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 18:59:16,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 18:59:16,373 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 18:59:16,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 18:59:16,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 18:59:16,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 18:59:16,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 18:59:16,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 18:59:16,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 18:59:16,376 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 18:59:16,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 18:59:16,377 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 18:59:16,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 18:59:16,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 18:59:16,377 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 18:59:16,378 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 18:59:16,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 18:59:16,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:59:16,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 18:59:16,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 18:59:16,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 18:59:16,379 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 18:59:16,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 18:59:16,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 18:59:16,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 18:59:16,791 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 18:59:16,792 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 18:59:16,793 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product43.cil.c [2021-02-21 18:59:16,866 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4a75ef5c/32e4c46fb93a466a86d51feff3b257e9/FLAGe7c69bd2d [2021-02-21 18:59:17,636 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 18:59:17,637 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product43.cil.c [2021-02-21 18:59:17,651 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4a75ef5c/32e4c46fb93a466a86d51feff3b257e9/FLAGe7c69bd2d [2021-02-21 18:59:17,887 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4a75ef5c/32e4c46fb93a466a86d51feff3b257e9 [2021-02-21 18:59:17,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 18:59:17,904 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 18:59:17,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 18:59:17,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 18:59:17,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 18:59:17,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:59:17" (1/1) ... [2021-02-21 18:59:17,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@615fb143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:17, skipping insertion in model container [2021-02-21 18:59:17,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:59:17" (1/1) ... [2021-02-21 18:59:17,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 18:59:17,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 18:59:18,148 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product43.cil.c[2573,2586] [2021-02-21 18:59:18,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:59:18,331 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 18:59:18,358 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product43.cil.c[2573,2586] [2021-02-21 18:59:18,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:59:18,502 INFO L208 MainTranslator]: Completed translation [2021-02-21 18:59:18,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:18 WrapperNode [2021-02-21 18:59:18,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 18:59:18,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 18:59:18,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 18:59:18,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 18:59:18,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:18" (1/1) ... [2021-02-21 18:59:18,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:18" (1/1) ... [2021-02-21 18:59:18,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:18" (1/1) ... [2021-02-21 18:59:18,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:18" (1/1) ... [2021-02-21 18:59:18,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:18" (1/1) ... [2021-02-21 18:59:18,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:18" (1/1) ... [2021-02-21 18:59:18,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:18" (1/1) ... [2021-02-21 18:59:18,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 18:59:18,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 18:59:18,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 18:59:18,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 18:59:18,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:18" (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 18:59:18,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 18:59:18,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 18:59:18,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 18:59:18,816 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 18:59:18,817 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 18:59:18,817 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 18:59:18,817 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 18:59:18,817 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 18:59:18,818 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 18:59:18,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 18:59:18,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:59:18,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 18:59:18,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 18:59:18,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 18:59:18,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 18:59:18,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 18:59:18,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 18:59:18,821 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 18:59:18,822 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 18:59:18,822 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 18:59:18,824 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 18:59:18,825 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 18:59:18,825 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 18:59:18,825 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 18:59:18,825 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2021-02-21 18:59:18,826 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 18:59:18,826 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 18:59:18,826 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 18:59:18,826 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 18:59:18,826 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 18:59:18,826 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 18:59:18,827 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 18:59:18,827 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 18:59:18,827 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 18:59:18,827 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 18:59:18,828 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 18:59:18,828 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 18:59:18,828 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 18:59:18,828 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 18:59:18,828 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 18:59:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 18:59:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 18:59:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 18:59:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 18:59:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 18:59:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 18:59:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 18:59:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 18:59:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 18:59:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 18:59:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 18:59:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 18:59:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 18:59:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 18:59:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 18:59:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 18:59:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 18:59:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 18:59:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 18:59:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 18:59:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 18:59:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 18:59:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 18:59:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:59:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 18:59:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 18:59:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 18:59:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 18:59:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 18:59:18,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 18:59:18,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 18:59:18,834 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 18:59:18,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 18:59:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 18:59:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 18:59:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 18:59:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 18:59:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 18:59:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 18:59:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 18:59:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 18:59:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 18:59:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 18:59:18,838 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 18:59:18,838 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 18:59:18,839 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 18:59:18,839 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 18:59:18,839 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 18:59:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 18:59:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2021-02-21 18:59:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 18:59:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 18:59:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 18:59:18,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 18:59:20,233 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 18:59:20,233 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 18:59:20,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:59:20 BoogieIcfgContainer [2021-02-21 18:59:20,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 18:59:20,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 18:59:20,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 18:59:20,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 18:59:20,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 06:59:17" (1/3) ... [2021-02-21 18:59:20,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4be798 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:59:20, skipping insertion in model container [2021-02-21 18:59:20,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:18" (2/3) ... [2021-02-21 18:59:20,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4be798 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:59:20, skipping insertion in model container [2021-02-21 18:59:20,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:59:20" (3/3) ... [2021-02-21 18:59:20,245 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product43.cil.c [2021-02-21 18:59:20,252 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 18:59:20,258 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 18:59:20,274 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 18:59:20,302 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 18:59:20,303 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 18:59:20,303 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 18:59:20,303 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 18:59:20,303 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 18:59:20,304 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 18:59:20,304 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 18:59:20,304 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 18:59:20,327 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states. [2021-02-21 18:59:20,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-21 18:59:20,349 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:59:20,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:59:20,350 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:59:20,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:59:20,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1496528977, now seen corresponding path program 1 times [2021-02-21 18:59:20,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:59:20,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514336812] [2021-02-21 18:59:20,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:59:20,452 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:59:20,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:20,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:20,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:20,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:20,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:21,393 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:59:21,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:59:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:21,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:21,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:21,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:59:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:21,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:21,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:21,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:59:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:21,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:21,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:21,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:59:21,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:21,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:21,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:21,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:59:21,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:21,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:21,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:21,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 18:59:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:21,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:21,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:21,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:59:21,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:21,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:21,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:21,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:59:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:21,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:21,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:21,597 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 18:59:21,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514336812] [2021-02-21 18:59:21,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:59:21,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 18:59:21,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723442383] [2021-02-21 18:59:21,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 18:59:21,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:59:21,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 18:59:21,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:59:21,623 INFO L87 Difference]: Start difference. First operand 321 states. Second operand 3 states. [2021-02-21 18:59:23,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:59:23,416 INFO L93 Difference]: Finished difference Result 503 states and 594 transitions. [2021-02-21 18:59:23,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 18:59:23,421 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-21 18:59:23,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:59:23,489 INFO L225 Difference]: With dead ends: 503 [2021-02-21 18:59:23,489 INFO L226 Difference]: Without dead ends: 312 [2021-02-21 18:59:23,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:59:23,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-02-21 18:59:23,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 269. [2021-02-21 18:59:23,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2021-02-21 18:59:23,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 291 transitions. [2021-02-21 18:59:23,692 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 291 transitions. Word has length 158 [2021-02-21 18:59:23,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:59:23,693 INFO L480 AbstractCegarLoop]: Abstraction has 269 states and 291 transitions. [2021-02-21 18:59:23,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 18:59:23,694 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 291 transitions. [2021-02-21 18:59:23,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-21 18:59:23,699 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:59:23,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:59:23,700 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 18:59:23,700 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:59:23,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:59:23,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1512702236, now seen corresponding path program 1 times [2021-02-21 18:59:23,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:59:23,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623928765] [2021-02-21 18:59:23,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:59:23,706 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:59:23,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:23,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:23,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:23,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:23,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:23,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:23,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:24,194 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:59:24,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:59:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:24,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:24,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:24,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:59:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:24,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:24,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:24,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:59:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:24,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:24,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:24,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:59:24,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:24,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:24,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:24,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:59:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:24,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:24,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:24,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-21 18:59:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:24,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:24,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:24,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:59:24,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:24,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:24,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:24,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 18:59:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:24,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:24,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:24,319 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 18:59:24,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623928765] [2021-02-21 18:59:24,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:59:24,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 18:59:24,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661580829] [2021-02-21 18:59:24,321 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 18:59:24,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:59:24,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 18:59:24,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:59:24,322 INFO L87 Difference]: Start difference. First operand 269 states and 291 transitions. Second operand 4 states. [2021-02-21 18:59:25,094 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:59:26,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:59:26,271 INFO L93 Difference]: Finished difference Result 410 states and 458 transitions. [2021-02-21 18:59:26,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 18:59:26,272 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-21 18:59:26,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:59:26,277 INFO L225 Difference]: With dead ends: 410 [2021-02-21 18:59:26,277 INFO L226 Difference]: Without dead ends: 295 [2021-02-21 18:59:26,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 18:59:26,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-02-21 18:59:26,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 259. [2021-02-21 18:59:26,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2021-02-21 18:59:26,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 278 transitions. [2021-02-21 18:59:26,423 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 278 transitions. Word has length 159 [2021-02-21 18:59:26,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:59:26,428 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 278 transitions. [2021-02-21 18:59:26,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 18:59:26,432 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 278 transitions. [2021-02-21 18:59:26,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-21 18:59:26,439 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:59:26,441 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] [2021-02-21 18:59:26,446 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 18:59:26,447 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:59:26,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:59:26,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1024484371, now seen corresponding path program 1 times [2021-02-21 18:59:26,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:59:26,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152684104] [2021-02-21 18:59:26,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:59:26,453 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:59:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:26,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:26,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:26,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:26,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:26,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:26,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:26,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:26,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:26,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:26,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:59:26,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:26,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:59:26,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:26,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:59:26,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:26,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:26,965 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:59:26,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:59:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:27,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:27,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:27,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:27,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:59:27,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:59:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:27,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:27,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:27,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:59:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:27,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:27,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:27,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:59:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:27,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:27,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:27,078 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:27,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:59:27,097 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 18:59:27,098 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 18:59:27,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:59:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:27,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:27,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:27,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:59:27,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:27,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:27,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:27,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:59:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:27,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:27,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:27,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-02-21 18:59:27,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:27,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:27,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:27,173 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 18:59:27,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152684104] [2021-02-21 18:59:27,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:59:27,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:59:27,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897497088] [2021-02-21 18:59:27,174 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:59:27,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:59:27,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:59:27,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:59:27,175 INFO L87 Difference]: Start difference. First operand 259 states and 278 transitions. Second operand 9 states. [2021-02-21 18:59:27,885 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:59:28,310 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:59:28,688 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:59:29,061 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:59:29,392 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:59:29,792 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:59:30,832 WARN L202 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:59:33,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:59:33,207 INFO L93 Difference]: Finished difference Result 689 states and 785 transitions. [2021-02-21 18:59:33,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 18:59:33,208 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2021-02-21 18:59:33,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:59:33,213 INFO L225 Difference]: With dead ends: 689 [2021-02-21 18:59:33,213 INFO L226 Difference]: Without dead ends: 545 [2021-02-21 18:59:33,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-21 18:59:33,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-02-21 18:59:33,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 466. [2021-02-21 18:59:33,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2021-02-21 18:59:33,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 515 transitions. [2021-02-21 18:59:33,469 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 515 transitions. Word has length 168 [2021-02-21 18:59:33,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:59:33,470 INFO L480 AbstractCegarLoop]: Abstraction has 466 states and 515 transitions. [2021-02-21 18:59:33,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:59:33,470 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 515 transitions. [2021-02-21 18:59:33,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-02-21 18:59:33,474 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:59:33,474 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] [2021-02-21 18:59:33,475 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 18:59:33,475 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:59:33,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:59:33,475 INFO L82 PathProgramCache]: Analyzing trace with hash -751554570, now seen corresponding path program 1 times [2021-02-21 18:59:33,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:59:33,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798596515] [2021-02-21 18:59:33,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:59:33,481 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:59:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:33,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:33,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:33,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:33,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:33,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:33,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:33,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:33,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:33,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:33,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:33,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:33,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:33,840 WARN L202 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:59:33,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:59:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:33,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:33,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:33,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:33,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:33,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:59:33,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:33,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:33,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:33,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:59:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:33,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:33,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:33,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:59:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:33,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:33,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:33,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:59:33,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:33,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:33,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:33,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-21 18:59:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:33,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:33,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:33,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:33,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:59:33,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:59:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:33,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:33,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:33,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-21 18:59:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:33,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:33,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:33,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-21 18:59:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:33,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:33,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:33,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-02-21 18:59:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:33,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:33,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:33,994 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 18:59:33,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798596515] [2021-02-21 18:59:33,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:59:33,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 18:59:33,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314136372] [2021-02-21 18:59:33,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 18:59:33,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:59:33,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 18:59:33,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-21 18:59:33,996 INFO L87 Difference]: Start difference. First operand 466 states and 515 transitions. Second operand 6 states. [2021-02-21 18:59:34,601 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:59:36,549 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:59:37,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:59:37,350 INFO L93 Difference]: Finished difference Result 1171 states and 1362 transitions. [2021-02-21 18:59:37,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 18:59:37,350 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2021-02-21 18:59:37,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:59:37,357 INFO L225 Difference]: With dead ends: 1171 [2021-02-21 18:59:37,357 INFO L226 Difference]: Without dead ends: 820 [2021-02-21 18:59:37,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-02-21 18:59:37,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2021-02-21 18:59:37,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 704. [2021-02-21 18:59:37,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2021-02-21 18:59:37,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 777 transitions. [2021-02-21 18:59:37,698 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 777 transitions. Word has length 176 [2021-02-21 18:59:37,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:59:37,699 INFO L480 AbstractCegarLoop]: Abstraction has 704 states and 777 transitions. [2021-02-21 18:59:37,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 18:59:37,699 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 777 transitions. [2021-02-21 18:59:37,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-21 18:59:37,702 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:59:37,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:59:37,703 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 18:59:37,703 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:59:37,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:59:37,704 INFO L82 PathProgramCache]: Analyzing trace with hash -775423515, now seen corresponding path program 1 times [2021-02-21 18:59:37,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:59:37,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424293523] [2021-02-21 18:59:37,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:59:37,708 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:59:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:37,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:37,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:37,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:37,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:37,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:37,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:37,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:37,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:37,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:37,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:37,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:37,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:37,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:37,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:37,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:37,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:38,112 WARN L202 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:59:38,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:59:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:38,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:38,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:38,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:38,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:59:38,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:59:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:38,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:38,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:38,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:59:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:38,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:38,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:38,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:59:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:38,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:38,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:38,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:59:38,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:38,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:38,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:38,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 18:59:38,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:38,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:38,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:38,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 18:59:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:38,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:38,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:38,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-02-21 18:59:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:38,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:38,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:38,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:38,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:38,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:38,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:38,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-02-21 18:59:38,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:38,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:38,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:38,273 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 18:59:38,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424293523] [2021-02-21 18:59:38,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:59:38,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:59:38,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158730540] [2021-02-21 18:59:38,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:59:38,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:59:38,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:59:38,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:59:38,276 INFO L87 Difference]: Start difference. First operand 704 states and 777 transitions. Second operand 9 states. [2021-02-21 18:59:38,868 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:59:40,480 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:59:40,888 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:59:41,326 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:59:41,728 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:59:42,100 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:59:42,521 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:59:42,903 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:59:44,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:59:44,620 INFO L93 Difference]: Finished difference Result 1817 states and 2106 transitions. [2021-02-21 18:59:44,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 18:59:44,621 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2021-02-21 18:59:44,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:59:44,629 INFO L225 Difference]: With dead ends: 1817 [2021-02-21 18:59:44,629 INFO L226 Difference]: Without dead ends: 1228 [2021-02-21 18:59:44,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-21 18:59:44,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2021-02-21 18:59:45,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1145. [2021-02-21 18:59:45,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1145 states. [2021-02-21 18:59:45,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1280 transitions. [2021-02-21 18:59:45,207 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1280 transitions. Word has length 177 [2021-02-21 18:59:45,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:59:45,208 INFO L480 AbstractCegarLoop]: Abstraction has 1145 states and 1280 transitions. [2021-02-21 18:59:45,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:59:45,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1280 transitions. [2021-02-21 18:59:45,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-21 18:59:45,218 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:59:45,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:59:45,218 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 18:59:45,218 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:59:45,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:59:45,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1051388138, now seen corresponding path program 1 times [2021-02-21 18:59:45,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:59:45,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409931768] [2021-02-21 18:59:45,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:59:45,222 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:59:45,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:59:45,340 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:59:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:59:45,427 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:59:45,687 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 18:59:45,687 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 18:59:45,689 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 18:59:45,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 06:59:45 BoogieIcfgContainer [2021-02-21 18:59:45,726 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 18:59:45,727 INFO L168 Benchmark]: Toolchain (without parser) took 27832.93 ms. Allocated memory was 151.0 MB in the beginning and 580.9 MB in the end (delta: 429.9 MB). Free memory was 126.6 MB in the beginning and 534.5 MB in the end (delta: -408.0 MB). Peak memory consumption was 349.0 MB. Max. memory is 8.0 GB. [2021-02-21 18:59:45,727 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 125.2 MB in the end (delta: 117.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 18:59:45,728 INFO L168 Benchmark]: CACSL2BoogieTranslator took 597.87 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 104.0 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-21 18:59:45,728 INFO L168 Benchmark]: Boogie Preprocessor took 191.15 ms. Allocated memory is still 151.0 MB. Free memory was 104.0 MB in the beginning and 131.9 MB in the end (delta: -27.8 MB). Peak memory consumption was 4.5 MB. Max. memory is 8.0 GB. [2021-02-21 18:59:45,728 INFO L168 Benchmark]: RCFGBuilder took 1535.03 ms. Allocated memory is still 151.0 MB. Free memory was 131.9 MB in the beginning and 88.0 MB in the end (delta: 43.9 MB). Peak memory consumption was 66.4 MB. Max. memory is 8.0 GB. [2021-02-21 18:59:45,729 INFO L168 Benchmark]: TraceAbstraction took 25487.91 ms. Allocated memory was 151.0 MB in the beginning and 580.9 MB in the end (delta: 429.9 MB). Free memory was 87.5 MB in the beginning and 534.5 MB in the end (delta: -447.0 MB). Peak memory consumption was 309.5 MB. Max. memory is 8.0 GB. [2021-02-21 18:59:45,731 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 125.2 MB in the end (delta: 117.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 597.87 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 104.0 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 191.15 ms. Allocated memory is still 151.0 MB. Free memory was 104.0 MB in the beginning and 131.9 MB in the end (delta: -27.8 MB). Peak memory consumption was 4.5 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1535.03 ms. Allocated memory is still 151.0 MB. Free memory was 131.9 MB in the beginning and 88.0 MB in the end (delta: 43.9 MB). Peak memory consumption was 66.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 25487.91 ms. Allocated memory was 151.0 MB in the beginning and 580.9 MB in the end (delta: 429.9 MB). Free memory was 87.5 MB in the beginning and 534.5 MB in the end (delta: -447.0 MB). Peak memory consumption was 309.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 150]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L361] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L599] int pumpRunning = 0; [L600] int systemActive = 1; [L851] int waterLevel = 1; [L852] int methaneLevelCritical = 0; [L123] int retValue_acc ; [L124] int tmp ; [L128] FCALL select_helpers() [L129] FCALL select_features() [L130] CALL, EXPR valid_product() [L584] int retValue_acc ; [L587] retValue_acc = 1 [L588] return (retValue_acc); [L130] RET, EXPR valid_product() [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L134] FCALL setup() [L135] CALL runTest() [L114] CALL test() [L785] int splverifierCounter ; [L786] int tmp ; [L787] int tmp___0 ; [L788] int tmp___1 ; [L789] int tmp___2 ; [L792] splverifierCounter = 0 [L794] COND TRUE 1 [L796] COND TRUE splverifierCounter < 4 [L802] tmp = __VERIFIER_nondet_int() [L804] COND TRUE \read(tmp) [L806] CALL waterRise() [L869] COND TRUE waterLevel < 2 [L870] waterLevel = waterLevel + 1 [L806] RET waterRise() [L812] tmp___0 = __VERIFIER_nondet_int() [L814] COND FALSE !(\read(tmp___0)) [L822] tmp___2 = __VERIFIER_nondet_int() [L824] COND FALSE !(\read(tmp___2)) [L828] tmp___1 = __VERIFIER_nondet_int() [L830] COND TRUE \read(tmp___1) [L832] CALL stopSystem() [L772] COND FALSE !(\read(pumpRunning)) [L779] systemActive = 0 [L832] RET stopSystem() [L839] CALL timeShift() [L606] COND FALSE !(\read(pumpRunning)) [L613] COND FALSE !(\read(systemActive)) [L621] CALL __utac_acc__Specification3_spec__1() [L159] int tmp ; [L160] int tmp___0 ; [L161] int tmp___1 ; [L165] CALL, EXPR isMethaneLevelCritical() [L890] int retValue_acc ; [L893] retValue_acc = methaneLevelCritical [L894] return (retValue_acc); [L165] RET, EXPR isMethaneLevelCritical() [L165] tmp = isMethaneLevelCritical() [L167] COND FALSE !(\read(tmp)) [L171] CALL, EXPR getWaterLevel() [L922] int retValue_acc ; [L925] retValue_acc = waterLevel [L926] return (retValue_acc); [L171] RET, EXPR getWaterLevel() [L171] tmp___0 = getWaterLevel() [L173] COND TRUE tmp___0 == 2 [L175] CALL, EXPR isPumpRunning() [L705] int retValue_acc ; [L708] retValue_acc = pumpRunning [L709] return (retValue_acc); [L175] RET, EXPR isPumpRunning() [L175] tmp___1 = isPumpRunning() [L177] COND FALSE !(\read(tmp___1)) [L181] CALL __automaton_fail() [L150] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 636 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 25.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 19.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1285 SDtfs, 1749 SDslu, 1693 SDs, 0 SdLazy, 3644 SolverSat, 547 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1145occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 357 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...