/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_product11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 18:56:25,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 18:56:25,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 18:56:25,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 18:56:25,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 18:56:25,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 18:56:25,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 18:56:25,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 18:56:25,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 18:56:25,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 18:56:25,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 18:56:25,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 18:56:25,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 18:56:25,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 18:56:25,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 18:56:25,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 18:56:25,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 18:56:25,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 18:56:25,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 18:56:25,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 18:56:25,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 18:56:25,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 18:56:25,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 18:56:25,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 18:56:25,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 18:56:25,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 18:56:25,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 18:56:25,490 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 18:56:25,491 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 18:56:25,492 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 18:56:25,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 18:56:25,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 18:56:25,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 18:56:25,497 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 18:56:25,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 18:56:25,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 18:56:25,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 18:56:25,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 18:56:25,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 18:56:25,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 18:56:25,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 18:56:25,502 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 18:56:25,529 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 18:56:25,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 18:56:25,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 18:56:25,534 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 18:56:25,535 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 18:56:25,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 18:56:25,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 18:56:25,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 18:56:25,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 18:56:25,536 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 18:56:25,537 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 18:56:25,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 18:56:25,537 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 18:56:25,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 18:56:25,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 18:56:25,538 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 18:56:25,538 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 18:56:25,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 18:56:25,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:56:25,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 18:56:25,539 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 18:56:25,539 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 18:56:25,539 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 18:56:25,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 18:56:25,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 18:56:25,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 18:56:25,991 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 18:56:25,991 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 18:56:25,992 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product11.cil.c [2021-02-21 18:56:26,068 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f767ac307/1c4119ea9a314da7b741025d95d1e856/FLAG873281445 [2021-02-21 18:56:26,718 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 18:56:26,719 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product11.cil.c [2021-02-21 18:56:26,732 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f767ac307/1c4119ea9a314da7b741025d95d1e856/FLAG873281445 [2021-02-21 18:56:27,035 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f767ac307/1c4119ea9a314da7b741025d95d1e856 [2021-02-21 18:56:27,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 18:56:27,055 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 18:56:27,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 18:56:27,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 18:56:27,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 18:56:27,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:56:27" (1/1) ... [2021-02-21 18:56:27,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26a08503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:27, skipping insertion in model container [2021-02-21 18:56:27,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:56:27" (1/1) ... [2021-02-21 18:56:27,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 18:56:27,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 18:56:27,547 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_product11.cil.c[15878,15891] [2021-02-21 18:56:27,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:56:27,576 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 18:56:27,652 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_product11.cil.c[15878,15891] [2021-02-21 18:56:27,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:56:27,701 INFO L208 MainTranslator]: Completed translation [2021-02-21 18:56:27,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:27 WrapperNode [2021-02-21 18:56:27,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 18:56:27,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 18:56:27,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 18:56:27,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 18:56:27,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:27" (1/1) ... [2021-02-21 18:56:27,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:27" (1/1) ... [2021-02-21 18:56:27,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:27" (1/1) ... [2021-02-21 18:56:27,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:27" (1/1) ... [2021-02-21 18:56:27,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:27" (1/1) ... [2021-02-21 18:56:27,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:27" (1/1) ... [2021-02-21 18:56:27,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:27" (1/1) ... [2021-02-21 18:56:27,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 18:56:27,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 18:56:27,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 18:56:27,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 18:56:27,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:27" (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 18:56:27,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 18:56:27,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 18:56:27,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 18:56:27,962 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 18:56:27,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:56:27,962 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 18:56:27,962 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 18:56:27,963 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 18:56:27,963 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 18:56:27,963 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 18:56:27,964 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 18:56:27,964 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 18:56:27,964 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 18:56:27,965 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 18:56:27,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 18:56:27,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 18:56:27,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 18:56:27,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 18:56:27,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 18:56:27,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 18:56:27,970 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 18:56:27,970 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 18:56:27,971 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2021-02-21 18:56:27,971 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 18:56:27,971 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 18:56:27,971 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 18:56:27,971 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 18:56:27,972 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 18:56:27,972 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 18:56:27,972 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 18:56:27,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 18:56:27,989 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 18:56:27,989 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 18:56:27,989 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 18:56:27,989 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 18:56:27,990 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 18:56:27,990 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 18:56:27,990 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 18:56:27,993 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 18:56:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 18:56:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 18:56:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 18:56:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 18:56:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 18:56:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 18:56:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 18:56:27,999 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 18:56:28,000 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:56:28,000 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 18:56:28,000 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 18:56:28,000 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 18:56:28,000 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 18:56:28,000 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 18:56:28,001 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 18:56:28,001 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 18:56:28,001 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 18:56:28,001 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 18:56:28,003 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 18:56:28,004 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 18:56:28,004 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 18:56:28,004 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 18:56:28,004 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 18:56:28,004 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 18:56:28,004 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 18:56:28,005 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 18:56:28,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 18:56:28,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 18:56:28,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 18:56:28,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 18:56:28,008 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 18:56:28,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 18:56:28,008 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 18:56:28,009 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 18:56:28,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 18:56:28,009 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 18:56:28,009 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 18:56:28,010 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 18:56:28,010 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 18:56:28,010 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 18:56:28,011 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 18:56:28,011 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 18:56:28,011 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 18:56:28,011 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 18:56:28,011 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2021-02-21 18:56:28,012 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 18:56:28,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 18:56:28,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 18:56:28,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 18:56:29,452 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 18:56:29,452 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 18:56:29,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:56:29 BoogieIcfgContainer [2021-02-21 18:56:29,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 18:56:29,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 18:56:29,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 18:56:29,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 18:56:29,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 06:56:27" (1/3) ... [2021-02-21 18:56:29,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72866aa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:56:29, skipping insertion in model container [2021-02-21 18:56:29,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:27" (2/3) ... [2021-02-21 18:56:29,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72866aa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:56:29, skipping insertion in model container [2021-02-21 18:56:29,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:56:29" (3/3) ... [2021-02-21 18:56:29,466 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product11.cil.c [2021-02-21 18:56:29,473 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 18:56:29,479 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 18:56:29,498 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 18:56:29,524 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 18:56:29,524 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 18:56:29,525 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 18:56:29,525 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 18:56:29,525 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 18:56:29,525 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 18:56:29,525 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 18:56:29,525 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 18:56:29,549 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states. [2021-02-21 18:56:29,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-21 18:56:29,577 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:56:29,584 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 18:56:29,585 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:56:29,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:56:29,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1057466646, now seen corresponding path program 1 times [2021-02-21 18:56:29,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:56:29,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881361449] [2021-02-21 18:56:29,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:56:29,692 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:56:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:30,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:30,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:30,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:30,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:30,549 WARN L202 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:56:30,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:56:30,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:30,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:30,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:30,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:56:30,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:30,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:30,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:30,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:56:30,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:30,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:30,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:30,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:56:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:30,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:30,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:30,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:56:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:30,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:30,729 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:30,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 18:56:30,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:30,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:30,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:30,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:56:30,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:30,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:30,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:30,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:56:30,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:30,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:30,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:30,802 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 18:56:30,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881361449] [2021-02-21 18:56:30,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:56:30,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 18:56:30,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056540288] [2021-02-21 18:56:30,814 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 18:56:30,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:56:30,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 18:56:30,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:56:30,834 INFO L87 Difference]: Start difference. First operand 283 states. Second operand 3 states. [2021-02-21 18:56:32,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:56:32,328 INFO L93 Difference]: Finished difference Result 391 states and 467 transitions. [2021-02-21 18:56:32,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 18:56:32,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-21 18:56:32,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:56:32,350 INFO L225 Difference]: With dead ends: 391 [2021-02-21 18:56:32,350 INFO L226 Difference]: Without dead ends: 254 [2021-02-21 18:56:32,355 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 18:56:32,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-02-21 18:56:32,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 215. [2021-02-21 18:56:32,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2021-02-21 18:56:32,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 230 transitions. [2021-02-21 18:56:32,526 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 230 transitions. Word has length 158 [2021-02-21 18:56:32,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:56:32,527 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 230 transitions. [2021-02-21 18:56:32,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 18:56:32,527 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 230 transitions. [2021-02-21 18:56:32,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-21 18:56:32,534 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:56:32,534 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 18:56:32,535 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 18:56:32,535 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:56:32,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:56:32,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1835863718, now seen corresponding path program 1 times [2021-02-21 18:56:32,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:56:32,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280842312] [2021-02-21 18:56:32,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:56:32,542 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:56:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:32,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:32,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:32,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:32,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:32,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:32,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:32,977 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:56:32,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:56:32,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:33,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:33,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:33,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:56:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:33,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:33,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:33,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:56:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:33,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:33,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:33,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:56:33,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:33,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:33,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:33,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:56:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:33,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:33,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:33,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-21 18:56:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:33,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:33,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:33,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:56:33,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:33,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:33,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:33,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 18:56:33,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:33,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:33,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:33,086 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 18:56:33,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280842312] [2021-02-21 18:56:33,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:56:33,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 18:56:33,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150589399] [2021-02-21 18:56:33,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 18:56:33,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:56:33,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 18:56:33,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:56:33,090 INFO L87 Difference]: Start difference. First operand 215 states and 230 transitions. Second operand 4 states. [2021-02-21 18:56:33,888 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:56:34,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:56:34,620 INFO L93 Difference]: Finished difference Result 298 states and 331 transitions. [2021-02-21 18:56:34,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 18:56:34,621 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-21 18:56:34,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:56:34,624 INFO L225 Difference]: With dead ends: 298 [2021-02-21 18:56:34,624 INFO L226 Difference]: Without dead ends: 237 [2021-02-21 18:56:34,626 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 18:56:34,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-02-21 18:56:34,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 205. [2021-02-21 18:56:34,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2021-02-21 18:56:34,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 217 transitions. [2021-02-21 18:56:34,751 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 217 transitions. Word has length 159 [2021-02-21 18:56:34,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:56:34,752 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 217 transitions. [2021-02-21 18:56:34,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 18:56:34,753 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 217 transitions. [2021-02-21 18:56:34,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-21 18:56:34,756 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:56:34,757 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 18:56:34,757 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 18:56:34,757 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:56:34,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:56:34,758 INFO L82 PathProgramCache]: Analyzing trace with hash 945332546, now seen corresponding path program 1 times [2021-02-21 18:56:34,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:56:34,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895832146] [2021-02-21 18:56:34,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:56:34,763 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:56:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:34,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:34,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:34,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:34,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:34,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:34,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:34,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:34,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:34,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:34,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:56:34,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:34,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:56:34,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:34,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:56:34,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:34,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:35,278 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:56:35,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:56:35,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:35,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:35,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:35,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:35,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:56:35,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:56:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:35,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:35,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:35,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:56:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:35,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:35,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:35,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:56:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:35,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:35,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:35,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:35,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:56:35,390 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 18:56:35,392 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 18:56:35,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:56:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:35,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:35,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:35,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:56:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:35,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:35,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:35,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:56:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:35,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:35,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:35,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-02-21 18:56:35,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:35,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:35,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:35,507 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 18:56:35,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895832146] [2021-02-21 18:56:35,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:56:35,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:56:35,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054904356] [2021-02-21 18:56:35,514 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:56:35,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:56:35,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:56:35,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:56:35,515 INFO L87 Difference]: Start difference. First operand 205 states and 217 transitions. Second operand 9 states. [2021-02-21 18:56:36,128 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:56:36,566 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:56:36,945 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:56:37,362 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:37,762 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:56:38,188 WARN L202 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:39,223 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:56:40,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:56:40,802 INFO L93 Difference]: Finished difference Result 519 states and 592 transitions. [2021-02-21 18:56:40,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 18:56:40,803 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2021-02-21 18:56:40,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:56:40,808 INFO L225 Difference]: With dead ends: 519 [2021-02-21 18:56:40,808 INFO L226 Difference]: Without dead ends: 429 [2021-02-21 18:56:40,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-21 18:56:40,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-02-21 18:56:40,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 358. [2021-02-21 18:56:40,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2021-02-21 18:56:40,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 393 transitions. [2021-02-21 18:56:40,999 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 393 transitions. Word has length 168 [2021-02-21 18:56:41,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:56:41,000 INFO L480 AbstractCegarLoop]: Abstraction has 358 states and 393 transitions. [2021-02-21 18:56:41,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:56:41,001 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 393 transitions. [2021-02-21 18:56:41,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-21 18:56:41,005 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:56:41,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:56:41,005 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 18:56:41,005 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:56:41,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:56:41,006 INFO L82 PathProgramCache]: Analyzing trace with hash 473823969, now seen corresponding path program 1 times [2021-02-21 18:56:41,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:56:41,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877645252] [2021-02-21 18:56:41,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:56:41,011 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:56:41,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:41,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:41,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:41,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:41,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:41,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:41,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:41,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:41,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:41,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:41,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:41,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:41,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:41,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:41,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:41,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:41,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:41,562 WARN L202 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:56:41,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:56:41,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:41,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:41,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:41,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:41,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:56:41,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:56:41,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:41,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:41,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:41,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:56:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:41,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:41,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:41,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:56:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:41,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:41,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:41,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:56:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:41,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:41,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:41,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-21 18:56:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:41,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:41,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:41,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-21 18:56:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:41,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:41,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:41,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 18:56:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:41,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:41,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:41,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:41,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:41,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:41,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:41,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-21 18:56:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:41,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:41,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:41,835 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 18:56:41,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877645252] [2021-02-21 18:56:41,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:56:41,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 18:56:41,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557629094] [2021-02-21 18:56:41,837 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 18:56:41,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:56:41,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 18:56:41,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-02-21 18:56:41,838 INFO L87 Difference]: Start difference. First operand 358 states and 393 transitions. Second operand 8 states. [2021-02-21 18:56:42,494 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:56:44,007 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:44,426 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:56:44,833 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:45,262 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:56:45,647 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:56:46,053 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:46,420 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:46,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:56:46,866 INFO L93 Difference]: Finished difference Result 855 states and 999 transitions. [2021-02-21 18:56:46,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 18:56:46,867 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 171 [2021-02-21 18:56:46,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:56:46,872 INFO L225 Difference]: With dead ends: 855 [2021-02-21 18:56:46,872 INFO L226 Difference]: Without dead ends: 612 [2021-02-21 18:56:46,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-02-21 18:56:46,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-02-21 18:56:47,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 576. [2021-02-21 18:56:47,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2021-02-21 18:56:47,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 652 transitions. [2021-02-21 18:56:47,132 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 652 transitions. Word has length 171 [2021-02-21 18:56:47,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:56:47,133 INFO L480 AbstractCegarLoop]: Abstraction has 576 states and 652 transitions. [2021-02-21 18:56:47,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 18:56:47,133 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 652 transitions. [2021-02-21 18:56:47,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-02-21 18:56:47,137 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:56:47,137 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 18:56:47,137 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 18:56:47,138 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:56:47,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:56:47,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1593796173, now seen corresponding path program 1 times [2021-02-21 18:56:47,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:56:47,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810418706] [2021-02-21 18:56:47,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:56:47,142 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:56:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:56:47,217 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:56:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:56:47,290 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:56:47,490 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 18:56:47,490 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 18:56:47,491 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 18:56:47,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 06:56:47 BoogieIcfgContainer [2021-02-21 18:56:47,515 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 18:56:47,516 INFO L168 Benchmark]: Toolchain (without parser) took 20474.66 ms. Allocated memory was 153.1 MB in the beginning and 385.9 MB in the end (delta: 232.8 MB). Free memory was 129.4 MB in the beginning and 259.7 MB in the end (delta: -130.3 MB). Peak memory consumption was 103.6 MB. Max. memory is 8.0 GB. [2021-02-21 18:56:47,517 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 153.1 MB. Free memory is still 125.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 18:56:47,518 INFO L168 Benchmark]: CACSL2BoogieTranslator took 639.48 ms. Allocated memory is still 153.1 MB. Free memory was 128.2 MB in the beginning and 108.7 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-21 18:56:47,518 INFO L168 Benchmark]: Boogie Preprocessor took 139.88 ms. Allocated memory is still 153.1 MB. Free memory was 108.7 MB in the beginning and 105.0 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-21 18:56:47,519 INFO L168 Benchmark]: RCFGBuilder took 1612.39 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 104.9 MB in the beginning and 124.8 MB in the end (delta: -20.0 MB). Peak memory consumption was 33.5 MB. Max. memory is 8.0 GB. [2021-02-21 18:56:47,519 INFO L168 Benchmark]: TraceAbstraction took 18057.10 ms. Allocated memory was 184.5 MB in the beginning and 385.9 MB in the end (delta: 201.3 MB). Free memory was 124.8 MB in the beginning and 259.7 MB in the end (delta: -134.9 MB). Peak memory consumption was 67.0 MB. Max. memory is 8.0 GB. [2021-02-21 18:56:47,521 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 153.1 MB. Free memory is still 125.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 639.48 ms. Allocated memory is still 153.1 MB. Free memory was 128.2 MB in the beginning and 108.7 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 139.88 ms. Allocated memory is still 153.1 MB. Free memory was 108.7 MB in the beginning and 105.0 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1612.39 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 104.9 MB in the beginning and 124.8 MB in the end (delta: -20.0 MB). Peak memory consumption was 33.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 18057.10 ms. Allocated memory was 184.5 MB in the beginning and 385.9 MB in the end (delta: 201.3 MB). Free memory was 124.8 MB in the beginning and 259.7 MB in the end (delta: -134.9 MB). Peak memory consumption was 67.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 801]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L80] int cleanupTimeShifts = 4; [L388] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L590] int pumpRunning = 0; [L591] int systemActive = 1; [L806] int waterLevel = 1; [L807] int methaneLevelCritical = 0; [L161] int retValue_acc ; [L162] int tmp ; [L166] FCALL select_helpers() [L167] FCALL select_features() [L168] CALL, EXPR valid_product() [L210] int retValue_acc ; [L213] retValue_acc = 1 [L214] return (retValue_acc); [L168] RET, EXPR valid_product() [L168] tmp = valid_product() [L170] COND TRUE \read(tmp) [L172] FCALL setup() [L173] CALL runTest() [L152] CALL test() [L731] int splverifierCounter ; [L732] int tmp ; [L733] int tmp___0 ; [L734] int tmp___1 ; [L735] int tmp___2 ; [L738] splverifierCounter = 0 [L740] COND TRUE 1 [L742] COND TRUE splverifierCounter < 4 [L748] tmp = __VERIFIER_nondet_int() [L750] COND TRUE \read(tmp) [L752] CALL waterRise() [L824] COND TRUE waterLevel < 2 [L825] waterLevel = waterLevel + 1 [L752] RET waterRise() [L758] tmp___0 = __VERIFIER_nondet_int() [L760] COND FALSE !(\read(tmp___0)) [L768] tmp___2 = __VERIFIER_nondet_int() [L770] COND TRUE \read(tmp___2) [L785] CALL timeShift() [L597] COND FALSE !(\read(pumpRunning)) [L604] COND TRUE \read(systemActive) [L606] FCALL processEnvironment() [L612] CALL __utac_acc__Specification3_spec__1() [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L53] CALL, EXPR isMethaneLevelCritical() [L845] int retValue_acc ; [L848] retValue_acc = methaneLevelCritical [L849] return (retValue_acc); [L53] RET, EXPR isMethaneLevelCritical() [L53] tmp = isMethaneLevelCritical() [L55] COND FALSE !(\read(tmp)) [L59] CALL, EXPR getWaterLevel() [L877] int retValue_acc ; [L880] retValue_acc = waterLevel [L881] return (retValue_acc); [L59] RET, EXPR getWaterLevel() [L59] tmp___0 = getWaterLevel() [L61] COND TRUE tmp___0 == 2 [L63] CALL, EXPR isPumpRunning() [L670] int retValue_acc ; [L673] retValue_acc = pumpRunning [L674] return (retValue_acc); [L63] RET, EXPR isPumpRunning() [L63] tmp___1 = isPumpRunning() [L65] COND FALSE !(\read(tmp___1)) [L69] CALL __automaton_fail() [L801] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 602 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 17.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 13.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 799 SDtfs, 776 SDslu, 1355 SDs, 0 SdLazy, 2180 SolverSat, 243 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 7.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=576occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 4 MinimizatonAttempts, 178 StatesRemovedByMinimization, 4 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...