/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_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:25:14,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:25:14,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:25:14,374 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:25:14,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:25:14,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:25:14,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:25:14,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:25:14,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:25:14,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:25:14,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:25:14,420 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:25:14,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:25:14,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:25:14,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:25:14,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:25:14,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:25:14,433 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:25:14,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:25:14,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:25:14,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:25:14,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:25:14,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:25:14,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:25:14,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:25:14,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:25:14,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:25:14,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:25:14,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:25:14,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:25:14,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:25:14,460 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:25:14,461 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:25:14,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:25:14,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:25:14,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:25:14,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:25:14,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:25:14,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:25:14,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:25:14,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:25:14,467 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:25:14,478 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:25:14,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:25:14,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:25:14,480 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:25:14,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:25:14,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:25:14,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:25:14,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:25:14,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:25:14,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:25:14,481 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:25:14,482 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:25:14,482 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:25:14,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:25:14,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:25:14,482 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:25:14,483 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:25:14,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:25:14,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:25:14,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:25:14,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:25:14,484 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:25:14,484 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:25:14,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:25:14,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:25:14,886 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:25:14,887 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:25:14,888 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:25:14,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product35.cil.c [2021-02-23 16:25:14,971 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71060298a/cd2be4fd256a42f38b15fff2fceb3db8/FLAG2c8c42469 [2021-02-23 16:25:15,704 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:25:15,705 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product35.cil.c [2021-02-23 16:25:15,720 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71060298a/cd2be4fd256a42f38b15fff2fceb3db8/FLAG2c8c42469 [2021-02-23 16:25:15,960 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71060298a/cd2be4fd256a42f38b15fff2fceb3db8 [2021-02-23 16:25:15,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:25:15,976 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:25:15,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:25:15,978 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:25:15,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:25:15,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:25:15" (1/1) ... [2021-02-23 16:25:15,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@222b202b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:25:15, skipping insertion in model container [2021-02-23 16:25:15,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:25:15" (1/1) ... [2021-02-23 16:25:16,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:25:16,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:25:16,311 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_product35.cil.c[7938,7951] [2021-02-23 16:25:16,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:25:16,455 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:25:16,584 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_product35.cil.c[7938,7951] [2021-02-23 16:25:16,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:25:16,688 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:25:16,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:25:16 WrapperNode [2021-02-23 16:25:16,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:25:16,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:25:16,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:25:16,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:25:16,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:25:16" (1/1) ... [2021-02-23 16:25:16,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:25:16" (1/1) ... [2021-02-23 16:25:16,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:25:16" (1/1) ... [2021-02-23 16:25:16,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:25:16" (1/1) ... [2021-02-23 16:25:16,807 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:25:16" (1/1) ... [2021-02-23 16:25:16,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:25:16" (1/1) ... [2021-02-23 16:25:16,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:25:16" (1/1) ... [2021-02-23 16:25:16,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:25:16,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:25:16,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:25:16,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:25:16,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:25:16" (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 [2021-02-23 16:25:16,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:25:16,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:25:16,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:25:16,977 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:25:16,977 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:25:16,977 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:25:16,977 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:25:16,978 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:25:16,978 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:25:16,978 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:25:16,979 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:25:16,979 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:25:16,980 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:25:16,980 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-23 16:25:16,980 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 16:25:16,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:25:16,981 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:25:16,981 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:25:16,982 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:25:16,982 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:25:16,985 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:25:16,985 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:25:16,986 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:25:16,986 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:25:16,986 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:25:16,987 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:25:16,987 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:25:16,987 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-23 16:25:16,987 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:25:16,987 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:25:16,988 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:25:16,988 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:25:16,988 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:25:16,988 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:25:16,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:25:16,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:25:16,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:25:16,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:25:16,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:25:16,989 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:25:16,990 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:25:16,990 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:25:16,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:25:16,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:25:16,990 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:25:16,991 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:25:16,991 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:25:16,991 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 16:25:16,991 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:25:16,991 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:25:16,991 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:25:16,992 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:25:16,992 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:25:16,992 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:25:16,992 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-23 16:25:16,992 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:25:16,992 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:25:16,993 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:25:16,993 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:25:16,993 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:25:16,993 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:25:16,993 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:25:16,993 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-23 16:25:16,994 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:25:16,994 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:25:16,994 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:25:16,994 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:25:16,995 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:25:16,995 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:25:16,995 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:25:16,995 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:25:16,995 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:25:16,995 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:25:16,996 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:25:16,996 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:25:16,996 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:25:16,996 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:25:16,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:25:16,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:25:16,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:25:16,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:25:16,998 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:25:16,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:25:16,998 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:25:16,999 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:25:17,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:25:17,000 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:25:17,000 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:25:17,000 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:25:17,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:25:17,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:25:17,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:25:18,068 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:25:18,068 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:25:18,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:25:18 BoogieIcfgContainer [2021-02-23 16:25:18,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:25:18,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:25:18,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:25:18,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:25:18,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:25:15" (1/3) ... [2021-02-23 16:25:18,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41635e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:25:18, skipping insertion in model container [2021-02-23 16:25:18,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:25:16" (2/3) ... [2021-02-23 16:25:18,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41635e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:25:18, skipping insertion in model container [2021-02-23 16:25:18,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:25:18" (3/3) ... [2021-02-23 16:25:18,080 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product35.cil.c [2021-02-23 16:25:18,086 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:25:18,092 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:25:18,110 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:25:18,134 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:25:18,134 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:25:18,134 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:25:18,134 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:25:18,135 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:25:18,135 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:25:18,135 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:25:18,135 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:25:18,158 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states. [2021-02-23 16:25:18,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-23 16:25:18,180 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:25:18,181 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] [2021-02-23 16:25:18,181 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:25:18,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:25:18,187 INFO L82 PathProgramCache]: Analyzing trace with hash 817882401, now seen corresponding path program 1 times [2021-02-23 16:25:18,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:25:18,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049709239] [2021-02-23 16:25:18,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:25:18,290 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:25:18,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:18,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:18,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:18,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:18,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:19,059 WARN L202 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:25:19,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:25:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:19,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:19,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:19,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:25:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:19,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:19,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:19,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:25:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:19,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:19,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:19,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:25:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:19,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:19,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:19,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:25:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:19,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:19,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:19,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:25:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:19,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:19,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:19,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:25:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:19,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:19,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:19,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-23 16:25:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:19,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:19,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:19,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:25:19,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049709239] [2021-02-23 16:25:19,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:25:19,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:25:19,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625966485] [2021-02-23 16:25:19,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:25:19,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:25:19,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:25:19,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:25:19,378 INFO L87 Difference]: Start difference. First operand 310 states. Second operand 3 states. [2021-02-23 16:25:20,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:25:20,956 INFO L93 Difference]: Finished difference Result 467 states and 554 transitions. [2021-02-23 16:25:20,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:25:20,958 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-23 16:25:20,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:25:20,983 INFO L225 Difference]: With dead ends: 467 [2021-02-23 16:25:20,984 INFO L226 Difference]: Without dead ends: 293 [2021-02-23 16:25:20,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:25:21,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-02-23 16:25:21,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 252. [2021-02-23 16:25:21,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2021-02-23 16:25:21,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 272 transitions. [2021-02-23 16:25:21,160 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 272 transitions. Word has length 158 [2021-02-23 16:25:21,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:25:21,161 INFO L480 AbstractCegarLoop]: Abstraction has 252 states and 272 transitions. [2021-02-23 16:25:21,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:25:21,161 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 272 transitions. [2021-02-23 16:25:21,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-23 16:25:21,166 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:25:21,167 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] [2021-02-23 16:25:21,167 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:25:21,167 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:25:21,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:25:21,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1745712216, now seen corresponding path program 1 times [2021-02-23 16:25:21,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:25:21,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181621987] [2021-02-23 16:25:21,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:25:21,173 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:25:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:21,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:21,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:21,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:21,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:25:21,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:21,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:21,642 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:25:21,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:25:21,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:21,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:21,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:21,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:25:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:21,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:21,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:21,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:25:21,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:21,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:21,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:21,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:25:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:21,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:21,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:21,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:25:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:21,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:21,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:21,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-23 16:25:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:21,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:21,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:21,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:25:21,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:21,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:21,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:21,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-23 16:25:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:21,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:21,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:21,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:25:21,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181621987] [2021-02-23 16:25:21,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:25:21,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:25:21,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910268204] [2021-02-23 16:25:21,818 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:25:21,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:25:21,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:25:21,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:25:21,820 INFO L87 Difference]: Start difference. First operand 252 states and 272 transitions. Second operand 4 states. [2021-02-23 16:25:22,525 WARN L202 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:25:23,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:25:23,484 INFO L93 Difference]: Finished difference Result 374 states and 418 transitions. [2021-02-23 16:25:23,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:25:23,485 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-23 16:25:23,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:25:23,497 INFO L225 Difference]: With dead ends: 374 [2021-02-23 16:25:23,498 INFO L226 Difference]: Without dead ends: 276 [2021-02-23 16:25:23,503 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 [2021-02-23 16:25:23,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-02-23 16:25:23,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 242. [2021-02-23 16:25:23,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2021-02-23 16:25:23,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 259 transitions. [2021-02-23 16:25:23,615 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 259 transitions. Word has length 159 [2021-02-23 16:25:23,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:25:23,616 INFO L480 AbstractCegarLoop]: Abstraction has 242 states and 259 transitions. [2021-02-23 16:25:23,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:25:23,616 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 259 transitions. [2021-02-23 16:25:23,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-23 16:25:23,619 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:25:23,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:25:23,620 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:25:23,620 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:25:23,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:25:23,621 INFO L82 PathProgramCache]: Analyzing trace with hash 246814362, now seen corresponding path program 1 times [2021-02-23 16:25:23,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:25:23,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328624004] [2021-02-23 16:25:23,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:25:23,625 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:25:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:23,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:23,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:25:23,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:23,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:25:23,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:23,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:25:23,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:23,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:25:23,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:23,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:25:23,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:23,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:25:23,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:23,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:25:23,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:23,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:24,070 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:25:24,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:25:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:24,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:24,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:24,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:24,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:25:24,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:25:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:24,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:24,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:24,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:25:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:24,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:24,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:24,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:25:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:24,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:24,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:24,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:24,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:25:24,225 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:25:24,226 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:25:24,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:25:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:24,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:24,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:24,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:25:24,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:24,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:24,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:24,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-23 16:25:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:24,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:24,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:24,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-02-23 16:25:24,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:24,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:24,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:24,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:25:24,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328624004] [2021-02-23 16:25:24,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:25:24,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:25:24,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676253010] [2021-02-23 16:25:24,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:25:24,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:25:24,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:25:24,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:25:24,306 INFO L87 Difference]: Start difference. First operand 242 states and 259 transitions. Second operand 9 states. [2021-02-23 16:25:24,909 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:25:25,349 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:25:25,718 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:25:26,089 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:25:26,498 WARN L202 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:25:26,847 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:25:27,893 WARN L202 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:25:29,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:25:29,834 INFO L93 Difference]: Finished difference Result 634 states and 724 transitions. [2021-02-23 16:25:29,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:25:29,835 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2021-02-23 16:25:29,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:25:29,839 INFO L225 Difference]: With dead ends: 634 [2021-02-23 16:25:29,839 INFO L226 Difference]: Without dead ends: 507 [2021-02-23 16:25:29,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-23 16:25:29,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-02-23 16:25:30,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 432. [2021-02-23 16:25:30,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2021-02-23 16:25:30,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 477 transitions. [2021-02-23 16:25:30,059 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 477 transitions. Word has length 168 [2021-02-23 16:25:30,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:25:30,060 INFO L480 AbstractCegarLoop]: Abstraction has 432 states and 477 transitions. [2021-02-23 16:25:30,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:25:30,060 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 477 transitions. [2021-02-23 16:25:30,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-02-23 16:25:30,063 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:25:30,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:25:30,064 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:25:30,064 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:25:30,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:25:30,065 INFO L82 PathProgramCache]: Analyzing trace with hash -478507709, now seen corresponding path program 1 times [2021-02-23 16:25:30,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:25:30,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813306186] [2021-02-23 16:25:30,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:25:30,069 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:25:30,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:30,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:30,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:25:30,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:30,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:25:30,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:30,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:25:30,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:30,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:25:30,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:30,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:25:30,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:30,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:30,418 WARN L202 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:25:30,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:25:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:30,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:30,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:30,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:30,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:25:30,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:25:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:30,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:30,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:30,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:25:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:30,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:30,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:30,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:25:30,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:30,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:30,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:30,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:25:30,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:30,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:30,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:30,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-23 16:25:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:30,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:30,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:25:30,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:30,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:25:30,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:25:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:30,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:30,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:30,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-23 16:25:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:30,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:30,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:30,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-23 16:25:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:30,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:30,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:30,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-02-23 16:25:30,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:30,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:30,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:30,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:25:30,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813306186] [2021-02-23 16:25:30,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:25:30,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 16:25:30,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439202858] [2021-02-23 16:25:30,609 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 16:25:30,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:25:30,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 16:25:30,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-23 16:25:30,617 INFO L87 Difference]: Start difference. First operand 432 states and 477 transitions. Second operand 6 states. [2021-02-23 16:25:31,395 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:25:33,240 WARN L202 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:25:33,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:25:33,881 INFO L93 Difference]: Finished difference Result 1099 states and 1282 transitions. [2021-02-23 16:25:33,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 16:25:33,881 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2021-02-23 16:25:33,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:25:33,894 INFO L225 Difference]: With dead ends: 1099 [2021-02-23 16:25:33,894 INFO L226 Difference]: Without dead ends: 782 [2021-02-23 16:25:33,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-02-23 16:25:33,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2021-02-23 16:25:34,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 666. [2021-02-23 16:25:34,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2021-02-23 16:25:34,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 735 transitions. [2021-02-23 16:25:34,278 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 735 transitions. Word has length 176 [2021-02-23 16:25:34,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:25:34,279 INFO L480 AbstractCegarLoop]: Abstraction has 666 states and 735 transitions. [2021-02-23 16:25:34,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 16:25:34,279 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 735 transitions. [2021-02-23 16:25:34,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-23 16:25:34,282 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:25:34,282 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] [2021-02-23 16:25:34,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:25:34,283 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:25:34,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:25:34,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1722740558, now seen corresponding path program 1 times [2021-02-23 16:25:34,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:25:34,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499380896] [2021-02-23 16:25:34,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:25:34,288 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:25:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:34,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:34,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:25:34,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:34,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:25:34,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:34,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:25:34,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:34,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:25:34,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:34,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:25:34,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:34,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:25:34,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:34,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:25:34,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:34,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:34,689 WARN L202 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:25:34,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:25:34,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:34,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:34,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:34,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:34,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:25:34,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:25:34,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:34,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:34,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:34,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:25:34,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:34,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:34,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:34,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:25:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:34,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:34,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:34,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:25:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:34,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:34,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:34,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 16:25:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:34,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:34,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:34,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-23 16:25:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:34,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:34,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:34,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-02-23 16:25:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:34,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:34,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:34,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:34,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:25:34,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:34,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:25:34,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-02-23 16:25:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:25:34,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:25:34,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:25:34,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:25:34,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499380896] [2021-02-23 16:25:34,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:25:34,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:25:34,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214148020] [2021-02-23 16:25:34,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:25:34,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:25:34,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:25:34,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:25:34,893 INFO L87 Difference]: Start difference. First operand 666 states and 735 transitions. Second operand 9 states. [2021-02-23 16:25:35,472 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:25:37,049 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:25:37,441 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:25:37,871 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:25:38,281 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:25:38,652 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:25:39,019 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:25:39,407 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:25:40,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:25:40,674 INFO L93 Difference]: Finished difference Result 1703 states and 1980 transitions. [2021-02-23 16:25:40,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-23 16:25:40,674 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2021-02-23 16:25:40,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:25:40,682 INFO L225 Difference]: With dead ends: 1703 [2021-02-23 16:25:40,682 INFO L226 Difference]: Without dead ends: 1152 [2021-02-23 16:25:40,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-23 16:25:40,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2021-02-23 16:25:41,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 1069. [2021-02-23 16:25:41,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1069 states. [2021-02-23 16:25:41,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1196 transitions. [2021-02-23 16:25:41,109 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1196 transitions. Word has length 177 [2021-02-23 16:25:41,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:25:41,109 INFO L480 AbstractCegarLoop]: Abstraction has 1069 states and 1196 transitions. [2021-02-23 16:25:41,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:25:41,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1196 transitions. [2021-02-23 16:25:41,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-23 16:25:41,113 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:25:41,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:25:41,113 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:25:41,113 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:25:41,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:25:41,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1328316036, now seen corresponding path program 1 times [2021-02-23 16:25:41,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:25:41,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543849119] [2021-02-23 16:25:41,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:25:41,117 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:25:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:25:41,190 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:25:41,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:25:41,262 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:25:41,440 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 16:25:41,440 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 16:25:41,441 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 16:25:41,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:25:41 BoogieIcfgContainer [2021-02-23 16:25:41,465 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 16:25:41,466 INFO L168 Benchmark]: Toolchain (without parser) took 25500.54 ms. Allocated memory was 152.0 MB in the beginning and 549.5 MB in the end (delta: 397.4 MB). Free memory was 106.9 MB in the beginning and 383.0 MB in the end (delta: -276.0 MB). Peak memory consumption was 122.2 MB. Max. memory is 8.0 GB. [2021-02-23 16:25:41,466 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 152.0 MB. Free memory was 124.6 MB in the beginning and 124.4 MB in the end (delta: 207.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 16:25:41,466 INFO L168 Benchmark]: CACSL2BoogieTranslator took 711.51 ms. Allocated memory is still 152.0 MB. Free memory was 105.8 MB in the beginning and 128.0 MB in the end (delta: -22.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2021-02-23 16:25:41,467 INFO L168 Benchmark]: Boogie Preprocessor took 159.54 ms. Allocated memory is still 152.0 MB. Free memory was 128.0 MB in the beginning and 124.2 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-23 16:25:41,467 INFO L168 Benchmark]: RCFGBuilder took 1218.75 ms. Allocated memory is still 152.0 MB. Free memory was 124.2 MB in the beginning and 76.6 MB in the end (delta: 47.6 MB). Peak memory consumption was 52.3 MB. Max. memory is 8.0 GB. [2021-02-23 16:25:41,468 INFO L168 Benchmark]: TraceAbstraction took 23392.04 ms. Allocated memory was 152.0 MB in the beginning and 549.5 MB in the end (delta: 397.4 MB). Free memory was 76.0 MB in the beginning and 383.0 MB in the end (delta: -306.9 MB). Peak memory consumption was 91.0 MB. Max. memory is 8.0 GB. [2021-02-23 16:25:41,469 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 152.0 MB. Free memory was 124.6 MB in the beginning and 124.4 MB in the end (delta: 207.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 711.51 ms. Allocated memory is still 152.0 MB. Free memory was 105.8 MB in the beginning and 128.0 MB in the end (delta: -22.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 159.54 ms. Allocated memory is still 152.0 MB. Free memory was 128.0 MB in the beginning and 124.2 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1218.75 ms. Allocated memory is still 152.0 MB. Free memory was 124.2 MB in the beginning and 76.6 MB in the end (delta: 47.6 MB). Peak memory consumption was 52.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 23392.04 ms. Allocated memory was 152.0 MB in the beginning and 549.5 MB in the end (delta: 397.4 MB). Free memory was 76.0 MB in the beginning and 383.0 MB in the end (delta: -306.9 MB). Peak memory consumption was 91.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 558]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L122] int pumpRunning = 0; [L123] int systemActive = 1; [L326] int cleanupTimeShifts = 4; [L425] int waterLevel = 1; [L426] int methaneLevelCritical = 0; [L732] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L402] int retValue_acc ; [L403] int tmp ; [L407] FCALL select_helpers() [L408] FCALL select_features() [L409] CALL, EXPR valid_product() [L545] int retValue_acc ; [L548] retValue_acc = 1 [L549] return (retValue_acc); [L409] RET, EXPR valid_product() [L409] tmp = valid_product() [L411] COND TRUE \read(tmp) [L413] FCALL setup() [L414] CALL runTest() [L393] CALL test() [L48] int splverifierCounter ; [L49] int tmp ; [L50] int tmp___0 ; [L51] int tmp___1 ; [L52] int tmp___2 ; [L55] splverifierCounter = 0 [L57] COND TRUE 1 [L59] COND TRUE splverifierCounter < 4 [L65] tmp = __VERIFIER_nondet_int() [L67] COND TRUE \read(tmp) [L69] CALL waterRise() [L443] COND TRUE waterLevel < 2 [L444] waterLevel = waterLevel + 1 [L69] RET waterRise() [L75] tmp___0 = __VERIFIER_nondet_int() [L77] COND FALSE !(\read(tmp___0)) [L85] tmp___2 = __VERIFIER_nondet_int() [L87] COND FALSE !(\read(tmp___2)) [L91] tmp___1 = __VERIFIER_nondet_int() [L93] COND TRUE \read(tmp___1) [L95] CALL stopSystem() [L278] COND FALSE !(\read(pumpRunning)) [L285] systemActive = 0 [L95] RET stopSystem() [L102] CALL timeShift() [L130] COND FALSE !(\read(pumpRunning)) [L137] COND FALSE !(\read(systemActive)) [L145] CALL __utac_acc__Specification3_spec__1() [L293] int tmp ; [L294] int tmp___0 ; [L295] int tmp___1 ; [L299] CALL, EXPR isMethaneLevelCritical() [L464] int retValue_acc ; [L467] retValue_acc = methaneLevelCritical [L468] return (retValue_acc); [L299] RET, EXPR isMethaneLevelCritical() [L299] tmp = isMethaneLevelCritical() [L301] COND FALSE !(\read(tmp)) [L305] CALL, EXPR getWaterLevel() [L496] int retValue_acc ; [L499] retValue_acc = waterLevel [L500] return (retValue_acc); [L305] RET, EXPR getWaterLevel() [L305] tmp___0 = getWaterLevel() [L307] COND TRUE tmp___0 == 2 [L309] CALL, EXPR isPumpRunning() [L211] int retValue_acc ; [L214] retValue_acc = pumpRunning [L215] return (retValue_acc); [L309] RET, EXPR isPumpRunning() [L309] tmp___1 = isPumpRunning() [L311] COND FALSE !(\read(tmp___1)) [L315] CALL __automaton_fail() [L558] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 627 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 23.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 17.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1199 SDtfs, 1753 SDslu, 1662 SDs, 0 SdLazy, 3339 SolverSat, 551 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1069occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 349 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...