/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_product08.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 18:55:55,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 18:55:55,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 18:55:55,351 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 18:55:55,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 18:55:55,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 18:55:55,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 18:55:55,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 18:55:55,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 18:55:55,381 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 18:55:55,383 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 18:55:55,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 18:55:55,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 18:55:55,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 18:55:55,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 18:55:55,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 18:55:55,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 18:55:55,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 18:55:55,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 18:55:55,432 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 18:55:55,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 18:55:55,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 18:55:55,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 18:55:55,438 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 18:55:55,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 18:55:55,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 18:55:55,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 18:55:55,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 18:55:55,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 18:55:55,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 18:55:55,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 18:55:55,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 18:55:55,447 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 18:55:55,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 18:55:55,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 18:55:55,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 18:55:55,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 18:55:55,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 18:55:55,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 18:55:55,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 18:55:55,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 18:55:55,455 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 18:55:55,469 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 18:55:55,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 18:55:55,471 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 18:55:55,472 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 18:55:55,472 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 18:55:55,472 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 18:55:55,472 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 18:55:55,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 18:55:55,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 18:55:55,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 18:55:55,474 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 18:55:55,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 18:55:55,474 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 18:55:55,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 18:55:55,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 18:55:55,475 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 18:55:55,475 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 18:55:55,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 18:55:55,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:55:55,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 18:55:55,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 18:55:55,477 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 18:55:55,477 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 18:55:55,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 18:55:55,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 18:55:55,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 18:55:55,898 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 18:55:55,898 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 18:55:55,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product08.cil.c [2021-02-21 18:55:55,991 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd4a34207/8d5f44f81b6045c8b352d5e2f0823eae/FLAG70b53829c [2021-02-21 18:55:56,765 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 18:55:56,766 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product08.cil.c [2021-02-21 18:55:56,783 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd4a34207/8d5f44f81b6045c8b352d5e2f0823eae/FLAG70b53829c [2021-02-21 18:55:56,995 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd4a34207/8d5f44f81b6045c8b352d5e2f0823eae [2021-02-21 18:55:56,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 18:55:57,014 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 18:55:57,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 18:55:57,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 18:55:57,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 18:55:57,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:55:56" (1/1) ... [2021-02-21 18:55:57,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd4b248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:55:57, skipping insertion in model container [2021-02-21 18:55:57,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:55:56" (1/1) ... [2021-02-21 18:55:57,041 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 18:55:57,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 18:55:57,480 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_product08.cil.c[12695,12708] [2021-02-21 18:55:57,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:55:57,522 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 18:55:57,627 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_product08.cil.c[12695,12708] [2021-02-21 18:55:57,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:55:57,681 INFO L208 MainTranslator]: Completed translation [2021-02-21 18:55:57,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:55:57 WrapperNode [2021-02-21 18:55:57,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 18:55:57,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 18:55:57,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 18:55:57,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 18:55:57,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:55:57" (1/1) ... [2021-02-21 18:55:57,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:55:57" (1/1) ... [2021-02-21 18:55:57,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:55:57" (1/1) ... [2021-02-21 18:55:57,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:55:57" (1/1) ... [2021-02-21 18:55:57,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:55:57" (1/1) ... [2021-02-21 18:55:57,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:55:57" (1/1) ... [2021-02-21 18:55:57,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:55:57" (1/1) ... [2021-02-21 18:55:57,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 18:55:57,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 18:55:57,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 18:55:57,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 18:55:57,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:55:57" (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 18:55:58,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 18:55:58,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 18:55:58,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 18:55:58,009 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 18:55:58,009 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:55:58,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 18:55:58,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 18:55:58,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 18:55:58,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 18:55:58,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 18:55:58,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 18:55:58,012 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 18:55:58,012 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 18:55:58,012 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 18:55:58,012 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 18:55:58,013 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 18:55:58,013 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 18:55:58,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 18:55:58,014 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 18:55:58,015 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 18:55:58,017 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 18:55:58,017 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 18:55:58,018 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 18:55:58,018 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 18:55:58,018 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 18:55:58,018 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 18:55:58,018 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 18:55:58,019 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 18:55:58,019 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 18:55:58,019 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 18:55:58,019 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 18:55:58,019 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 18:55:58,020 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 18:55:58,020 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 18:55:58,020 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 18:55:58,020 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 18:55:58,020 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 18:55:58,020 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 18:55:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 18:55:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 18:55:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 18:55:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 18:55:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 18:55:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 18:55:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 18:55:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 18:55:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 18:55:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 18:55:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:55:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 18:55:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 18:55:58,023 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 18:55:58,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 18:55:58,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 18:55:58,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 18:55:58,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 18:55:58,023 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 18:55:58,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 18:55:58,024 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 18:55:58,024 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 18:55:58,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 18:55:58,024 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 18:55:58,024 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 18:55:58,024 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 18:55:58,025 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 18:55:58,025 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 18:55:58,025 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 18:55:58,025 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 18:55:58,025 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 18:55:58,025 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 18:55:58,026 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 18:55:58,026 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 18:55:58,026 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 18:55:58,027 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 18:55:58,027 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 18:55:58,027 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 18:55:58,027 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 18:55:58,027 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 18:55:58,028 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 18:55:58,028 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 18:55:58,028 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 18:55:58,028 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 18:55:58,029 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 18:55:58,029 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 18:55:58,029 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 18:55:58,030 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 18:55:58,030 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 18:55:58,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 18:55:58,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 18:55:58,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 18:55:59,385 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 18:55:59,385 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 18:55:59,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:55:59 BoogieIcfgContainer [2021-02-21 18:55:59,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 18:55:59,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 18:55:59,395 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 18:55:59,399 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 18:55:59,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 06:55:56" (1/3) ... [2021-02-21 18:55:59,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739b87da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:55:59, skipping insertion in model container [2021-02-21 18:55:59,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:55:57" (2/3) ... [2021-02-21 18:55:59,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739b87da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:55:59, skipping insertion in model container [2021-02-21 18:55:59,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:55:59" (3/3) ... [2021-02-21 18:55:59,403 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product08.cil.c [2021-02-21 18:55:59,411 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 18:55:59,417 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 18:55:59,438 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 18:55:59,471 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 18:55:59,472 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 18:55:59,472 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 18:55:59,472 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 18:55:59,472 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 18:55:59,472 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 18:55:59,472 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 18:55:59,473 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 18:55:59,508 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states. [2021-02-21 18:55:59,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-21 18:55:59,528 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:55:59,529 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 18:55:59,530 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:55:59,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:55:59,536 INFO L82 PathProgramCache]: Analyzing trace with hash -845316587, now seen corresponding path program 1 times [2021-02-21 18:55:59,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:55:59,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115381517] [2021-02-21 18:55:59,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:55:59,619 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:55:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:00,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:00,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:00,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:00,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:00,402 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:56:00,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:56:00,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:00,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:00,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:00,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:56:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:00,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:00,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:00,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:56:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:00,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:00,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:00,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:56:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:00,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:00,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:00,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:56:00,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:00,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:00,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:00,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 18:56:00,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:00,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:00,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:00,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:56:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:00,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:00,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:00,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:56:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:00,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:00,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:00,606 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 18:56:00,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115381517] [2021-02-21 18:56:00,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:56:00,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 18:56:00,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658937659] [2021-02-21 18:56:00,619 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 18:56:00,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:56:00,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 18:56:00,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:56:00,636 INFO L87 Difference]: Start difference. First operand 291 states. Second operand 3 states. [2021-02-21 18:56:02,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:56:02,210 INFO L93 Difference]: Finished difference Result 442 states and 530 transitions. [2021-02-21 18:56:02,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 18:56:02,212 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-21 18:56:02,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:56:02,227 INFO L225 Difference]: With dead ends: 442 [2021-02-21 18:56:02,227 INFO L226 Difference]: Without dead ends: 281 [2021-02-21 18:56:02,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:56:02,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-02-21 18:56:02,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 239. [2021-02-21 18:56:02,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2021-02-21 18:56:02,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 259 transitions. [2021-02-21 18:56:02,421 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 259 transitions. Word has length 158 [2021-02-21 18:56:02,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:56:02,425 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 259 transitions. [2021-02-21 18:56:02,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 18:56:02,425 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 259 transitions. [2021-02-21 18:56:02,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-21 18:56:02,440 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:56:02,441 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] [2021-02-21 18:56:02,441 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 18:56:02,442 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:56:02,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:56:02,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1852035926, now seen corresponding path program 1 times [2021-02-21 18:56:02,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:56:02,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711194480] [2021-02-21 18:56:02,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:56:02,452 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:56:02,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:02,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:02,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:02,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:02,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:02,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:02,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:02,959 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:56:02,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:56:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:03,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:03,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:03,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:56:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:03,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:03,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:03,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:56:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:03,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:03,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:03,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:56:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:03,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:03,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:03,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:56:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:03,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:03,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:03,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-21 18:56:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:03,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:03,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:03,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:56:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:03,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:03,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:03,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 18:56:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:03,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:03,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:03,064 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 18:56:03,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711194480] [2021-02-21 18:56:03,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:56:03,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 18:56:03,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982941422] [2021-02-21 18:56:03,066 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 18:56:03,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:56:03,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 18:56:03,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:56:03,067 INFO L87 Difference]: Start difference. First operand 239 states and 259 transitions. Second operand 4 states. [2021-02-21 18:56:03,998 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:56:05,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:56:05,003 INFO L93 Difference]: Finished difference Result 348 states and 392 transitions. [2021-02-21 18:56:05,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 18:56:05,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-21 18:56:05,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:56:05,008 INFO L225 Difference]: With dead ends: 348 [2021-02-21 18:56:05,008 INFO L226 Difference]: Without dead ends: 264 [2021-02-21 18:56:05,011 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 18:56:05,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-02-21 18:56:05,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 229. [2021-02-21 18:56:05,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2021-02-21 18:56:05,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 246 transitions. [2021-02-21 18:56:05,103 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 246 transitions. Word has length 159 [2021-02-21 18:56:05,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:56:05,104 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 246 transitions. [2021-02-21 18:56:05,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 18:56:05,104 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 246 transitions. [2021-02-21 18:56:05,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-21 18:56:05,107 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:56:05,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:56:05,108 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 18:56:05,108 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:56:05,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:56:05,109 INFO L82 PathProgramCache]: Analyzing trace with hash 345072707, now seen corresponding path program 1 times [2021-02-21 18:56:05,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:56:05,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736068946] [2021-02-21 18:56:05,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:56:05,113 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:56:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:05,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:05,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:05,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:05,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:05,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:56:05,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:05,554 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:56:05,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:56:05,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:05,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:05,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:56:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:05,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:05,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:56:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:05,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:05,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:56:05,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:05,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:05,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:56:05,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:56:05,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:56:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:05,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:05,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 18:56:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:05,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:05,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 18:56:05,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:05,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:05,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-21 18:56:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:05,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:05,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-21 18:56:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:05,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:05,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:05,778 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 18:56:05,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736068946] [2021-02-21 18:56:05,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:56:05,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 18:56:05,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743541460] [2021-02-21 18:56:05,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 18:56:05,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:56:05,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 18:56:05,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:56:05,782 INFO L87 Difference]: Start difference. First operand 229 states and 246 transitions. Second operand 10 states. [2021-02-21 18:56:06,550 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:56:07,029 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:56:07,413 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:56:07,802 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:08,207 WARN L202 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:56:08,603 WARN L202 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:09,718 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:56:12,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:56:12,086 INFO L93 Difference]: Finished difference Result 619 states and 724 transitions. [2021-02-21 18:56:12,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 18:56:12,087 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-21 18:56:12,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:56:12,093 INFO L225 Difference]: With dead ends: 619 [2021-02-21 18:56:12,093 INFO L226 Difference]: Without dead ends: 505 [2021-02-21 18:56:12,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-21 18:56:12,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-02-21 18:56:12,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 414. [2021-02-21 18:56:12,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2021-02-21 18:56:12,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 463 transitions. [2021-02-21 18:56:12,297 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 463 transitions. Word has length 172 [2021-02-21 18:56:12,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:56:12,298 INFO L480 AbstractCegarLoop]: Abstraction has 414 states and 463 transitions. [2021-02-21 18:56:12,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 18:56:12,298 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 463 transitions. [2021-02-21 18:56:12,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-21 18:56:12,302 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:56:12,302 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 18:56:12,302 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 18:56:12,302 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:56:12,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:56:12,303 INFO L82 PathProgramCache]: Analyzing trace with hash -2043508278, now seen corresponding path program 1 times [2021-02-21 18:56:12,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:56:12,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294120761] [2021-02-21 18:56:12,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:56:12,307 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:56:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:12,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:12,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:12,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:12,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:12,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:12,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:12,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:12,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:12,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:12,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:12,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:12,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:12,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:12,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:12,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:12,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:12,737 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:56:12,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:56:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:12,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:12,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:12,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:12,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:56:12,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:56:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:12,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:12,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:12,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:56:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:12,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:12,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:12,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:56:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:12,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:12,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:12,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:56:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:12,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:12,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:12,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 18:56:12,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:12,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:12,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:12,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 18:56:12,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:12,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:12,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:12,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-02-21 18:56:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:12,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:12,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:12,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:12,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:12,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:12,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:12,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-02-21 18:56:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:12,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:12,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:12,966 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 18:56:12,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294120761] [2021-02-21 18:56:12,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:56:12,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:56:12,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104915703] [2021-02-21 18:56:12,968 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:56:12,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:56:12,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:56:12,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:56:12,975 INFO L87 Difference]: Start difference. First operand 414 states and 463 transitions. Second operand 9 states. [2021-02-21 18:56:13,599 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:56:15,654 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:16,075 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:56:16,508 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:16,963 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:56:17,345 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:56:17,743 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:18,125 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:19,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:56:19,038 INFO L93 Difference]: Finished difference Result 1090 states and 1320 transitions. [2021-02-21 18:56:19,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 18:56:19,039 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2021-02-21 18:56:19,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:56:19,054 INFO L225 Difference]: With dead ends: 1090 [2021-02-21 18:56:19,054 INFO L226 Difference]: Without dead ends: 791 [2021-02-21 18:56:19,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-21 18:56:19,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2021-02-21 18:56:19,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 692. [2021-02-21 18:56:19,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2021-02-21 18:56:19,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 798 transitions. [2021-02-21 18:56:19,399 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 798 transitions. Word has length 177 [2021-02-21 18:56:19,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:56:19,400 INFO L480 AbstractCegarLoop]: Abstraction has 692 states and 798 transitions. [2021-02-21 18:56:19,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:56:19,400 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 798 transitions. [2021-02-21 18:56:19,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-21 18:56:19,405 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:56:19,405 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 18:56:19,405 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 18:56:19,405 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:56:19,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:56:19,406 INFO L82 PathProgramCache]: Analyzing trace with hash 714541325, now seen corresponding path program 1 times [2021-02-21 18:56:19,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:56:19,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535652013] [2021-02-21 18:56:19,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:56:19,410 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:56:19,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:19,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:19,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:19,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:19,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:19,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:19,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:19,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:19,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:19,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:19,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:19,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:19,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:19,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:19,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:19,829 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:56:19,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:56:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:19,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:19,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:19,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:19,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:19,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:56:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:19,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:19,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:19,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:56:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:19,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:19,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:19,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:56:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:19,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:19,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:19,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:56:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:19,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:19,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:19,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 18:56:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:19,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:19,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:19,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 18:56:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:19,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:19,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:19,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-21 18:56:19,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:19,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:19,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:19,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-21 18:56:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:19,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:19,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:19,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-02-21 18:56:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:19,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:19,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:19,990 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 18:56:19,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535652013] [2021-02-21 18:56:19,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:56:19,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 18:56:19,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72411499] [2021-02-21 18:56:19,992 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 18:56:19,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:56:19,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 18:56:19,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 18:56:19,993 INFO L87 Difference]: Start difference. First operand 692 states and 798 transitions. Second operand 6 states. [2021-02-21 18:56:20,646 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:56:21,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:56:21,895 INFO L93 Difference]: Finished difference Result 1209 states and 1450 transitions. [2021-02-21 18:56:21,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 18:56:21,896 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2021-02-21 18:56:21,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:56:21,900 INFO L225 Difference]: With dead ends: 1209 [2021-02-21 18:56:21,900 INFO L226 Difference]: Without dead ends: 632 [2021-02-21 18:56:21,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 18:56:21,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-02-21 18:56:22,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 555. [2021-02-21 18:56:22,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 555 states. [2021-02-21 18:56:22,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 606 transitions. [2021-02-21 18:56:22,164 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 606 transitions. Word has length 182 [2021-02-21 18:56:22,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:56:22,165 INFO L480 AbstractCegarLoop]: Abstraction has 555 states and 606 transitions. [2021-02-21 18:56:22,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 18:56:22,165 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 606 transitions. [2021-02-21 18:56:22,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-21 18:56:22,168 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:56:22,169 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 18:56:22,169 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 18:56:22,169 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:56:22,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:56:22,170 INFO L82 PathProgramCache]: Analyzing trace with hash -92564613, now seen corresponding path program 1 times [2021-02-21 18:56:22,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:56:22,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162246122] [2021-02-21 18:56:22,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:56:22,173 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:56:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:56:22,252 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:56:22,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:56:22,328 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:56:22,554 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 18:56:22,555 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 18:56:22,556 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 18:56:22,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 06:56:22 BoogieIcfgContainer [2021-02-21 18:56:22,581 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 18:56:22,582 INFO L168 Benchmark]: Toolchain (without parser) took 25581.51 ms. Allocated memory was 151.0 MB in the beginning and 464.5 MB in the end (delta: 313.5 MB). Free memory was 126.4 MB in the beginning and 331.5 MB in the end (delta: -205.1 MB). Peak memory consumption was 109.7 MB. Max. memory is 8.0 GB. [2021-02-21 18:56:22,583 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 124.2 MB in the end (delta: 436.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 18:56:22,583 INFO L168 Benchmark]: CACSL2BoogieTranslator took 665.58 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 105.4 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-21 18:56:22,584 INFO L168 Benchmark]: Boogie Preprocessor took 173.38 ms. Allocated memory is still 151.0 MB. Free memory was 105.4 MB in the beginning and 132.2 MB in the end (delta: -26.9 MB). Peak memory consumption was 7.5 MB. Max. memory is 8.0 GB. [2021-02-21 18:56:22,584 INFO L168 Benchmark]: RCFGBuilder took 1532.42 ms. Allocated memory is still 151.0 MB. Free memory was 132.2 MB in the beginning and 111.6 MB in the end (delta: 20.7 MB). Peak memory consumption was 87.3 MB. Max. memory is 8.0 GB. [2021-02-21 18:56:22,585 INFO L168 Benchmark]: TraceAbstraction took 23187.06 ms. Allocated memory was 151.0 MB in the beginning and 464.5 MB in the end (delta: 313.5 MB). Free memory was 111.0 MB in the beginning and 331.5 MB in the end (delta: -220.5 MB). Peak memory consumption was 93.6 MB. Max. memory is 8.0 GB. [2021-02-21 18:56:22,587 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 124.2 MB in the end (delta: 436.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 665.58 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 105.4 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 173.38 ms. Allocated memory is still 151.0 MB. Free memory was 105.4 MB in the beginning and 132.2 MB in the end (delta: -26.9 MB). Peak memory consumption was 7.5 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1532.42 ms. Allocated memory is still 151.0 MB. Free memory was 132.2 MB in the beginning and 111.6 MB in the end (delta: 20.7 MB). Peak memory consumption was 87.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 23187.06 ms. Allocated memory was 151.0 MB in the beginning and 464.5 MB in the end (delta: 313.5 MB). Free memory was 111.0 MB in the beginning and 331.5 MB in the end (delta: -220.5 MB). Peak memory consumption was 93.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 534]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L249] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L450] int waterLevel = 1; [L451] int methaneLevelCritical = 0; [L615] int pumpRunning = 0; [L616] int systemActive = 1; [L809] int cleanupTimeShifts = 4; [L882] int retValue_acc ; [L883] int tmp ; [L887] FCALL select_helpers() [L888] FCALL select_features() [L889] CALL, EXPR valid_product() [L800] int retValue_acc ; [L803] retValue_acc = 1 [L804] return (retValue_acc); [L889] RET, EXPR valid_product() [L889] tmp = valid_product() [L891] COND TRUE \read(tmp) [L893] FCALL setup() [L894] CALL runTest() [L876] CALL test() [L544] int splverifierCounter ; [L545] int tmp ; [L546] int tmp___0 ; [L547] int tmp___1 ; [L548] int tmp___2 ; [L551] splverifierCounter = 0 [L553] COND TRUE 1 [L555] COND TRUE splverifierCounter < 4 [L561] tmp = __VERIFIER_nondet_int() [L563] COND TRUE \read(tmp) [L565] CALL waterRise() [L468] COND TRUE waterLevel < 2 [L469] waterLevel = waterLevel + 1 [L565] RET waterRise() [L571] tmp___0 = __VERIFIER_nondet_int() [L573] COND FALSE !(\read(tmp___0)) [L581] tmp___2 = __VERIFIER_nondet_int() [L583] COND FALSE !(\read(tmp___2)) [L589] tmp___1 = __VERIFIER_nondet_int() [L591] COND TRUE \read(tmp___1) [L593] CALL stopSystem() [L751] COND FALSE !(\read(pumpRunning)) [L758] systemActive = 0 [L593] RET stopSystem() [L600] CALL timeShift() [L622] COND FALSE !(\read(pumpRunning)) [L629] COND FALSE !(\read(systemActive)) [L637] CALL __utac_acc__Specification3_spec__1() [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L53] CALL, EXPR isMethaneLevelCritical() [L489] int retValue_acc ; [L492] retValue_acc = methaneLevelCritical [L493] return (retValue_acc); [L53] RET, EXPR isMethaneLevelCritical() [L53] tmp = isMethaneLevelCritical() [L55] COND FALSE !(\read(tmp)) [L59] CALL, EXPR getWaterLevel() [L521] int retValue_acc ; [L524] retValue_acc = waterLevel [L525] return (retValue_acc); [L59] RET, EXPR getWaterLevel() [L59] tmp___0 = getWaterLevel() [L61] COND TRUE tmp___0 == 2 [L63] CALL, EXPR isPumpRunning() [L703] int retValue_acc ; [L706] retValue_acc = pumpRunning [L707] return (retValue_acc); [L63] RET, EXPR isPumpRunning() [L63] tmp___1 = isPumpRunning() [L65] COND FALSE !(\read(tmp___1)) [L69] CALL __automaton_fail() [L534] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 609 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 23.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 17.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1120 SDtfs, 1683 SDslu, 1592 SDs, 0 SdLazy, 3037 SolverSat, 594 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 8.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=692occurred 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: 1.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 344 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...