/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_spec4_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:28:57,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:28:57,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:28:57,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:28:57,516 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:28:57,518 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:28:57,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:28:57,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:28:57,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:28:57,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:28:57,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:28:57,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:28:57,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:28:57,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:28:57,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:28:57,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:28:57,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:28:57,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:28:57,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:28:57,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:28:57,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:28:57,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:28:57,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:28:57,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:28:57,597 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:28:57,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:28:57,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:28:57,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:28:57,604 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:28:57,610 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:28:57,611 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:28:57,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:28:57,619 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:28:57,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:28:57,626 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:28:57,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:28:57,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:28:57,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:28:57,628 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:28:57,629 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:28:57,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:28:57,632 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 19:28:57,670 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:28:57,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:28:57,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:28:57,678 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:28:57,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:28:57,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:28:57,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:28:57,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:28:57,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:28:57,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:28:57,681 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:28:57,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:28:57,681 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:28:57,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:28:57,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:28:57,682 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:28:57,682 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:28:57,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:28:57,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:28:57,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:28:57,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:28:57,684 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:28:57,684 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:28:58,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:28:58,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:28:58,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:28:58,331 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:28:58,332 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:28:58,334 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product29.cil.c [2021-02-21 19:28:58,454 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20e8fe2cb/bcff1cac236b478a9b1df1a55fcebb0a/FLAG062754a61 [2021-02-21 19:28:59,460 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:28:59,461 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product29.cil.c [2021-02-21 19:28:59,486 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20e8fe2cb/bcff1cac236b478a9b1df1a55fcebb0a/FLAG062754a61 [2021-02-21 19:28:59,627 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20e8fe2cb/bcff1cac236b478a9b1df1a55fcebb0a [2021-02-21 19:28:59,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:28:59,646 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:28:59,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:28:59,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:28:59,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:28:59,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:28:59" (1/1) ... [2021-02-21 19:28:59,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4055b102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:28:59, skipping insertion in model container [2021-02-21 19:28:59,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:28:59" (1/1) ... [2021-02-21 19:28:59,676 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:28:59,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:28:59,984 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_spec4_product29.cil.c[2660,2673] [2021-02-21 19:29:00,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:29:00,270 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:29:00,348 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_spec4_product29.cil.c[2660,2673] [2021-02-21 19:29:00,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:29:00,482 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:29:00,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:00 WrapperNode [2021-02-21 19:29:00,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:29:00,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:29:00,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:29:00,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:29:00,507 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:00" (1/1) ... [2021-02-21 19:29:00,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:00" (1/1) ... [2021-02-21 19:29:00,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:00" (1/1) ... [2021-02-21 19:29:00,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:00" (1/1) ... [2021-02-21 19:29:00,634 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:00" (1/1) ... [2021-02-21 19:29:00,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:00" (1/1) ... [2021-02-21 19:29:00,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:00" (1/1) ... [2021-02-21 19:29:00,680 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:29:00,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:29:00,682 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:29:00,682 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:29:00,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:29:00,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:29:00,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:29:00,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:29:00,884 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:29:00,885 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:29:00,885 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:29:00,885 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:29:00,885 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:29:00,886 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:29:00,886 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:29:00,887 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 19:29:00,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:29:00,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:29:00,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:29:00,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:29:00,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:29:00,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:29:00,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:29:00,891 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:29:00,891 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:29:00,894 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:29:00,894 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:29:00,895 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:29:00,895 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:29:00,895 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:29:00,895 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 19:29:00,896 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:29:00,896 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-21 19:29:00,896 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:29:00,896 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:29:00,896 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:29:00,896 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:29:00,896 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:29:00,897 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 19:29:00,897 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:29:00,897 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:29:00,897 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:29:00,897 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:29:00,897 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:29:00,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:29:00,898 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:29:00,898 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:29:00,899 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:29:00,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:29:00,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:29:00,899 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:29:00,899 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:29:00,899 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:29:00,900 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:29:00,900 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:29:00,900 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:29:00,900 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:29:00,900 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 19:29:00,900 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:29:00,901 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:29:00,901 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:29:00,901 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:29:00,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:29:00,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:29:00,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:29:00,901 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:29:00,902 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:29:00,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:29:00,902 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:29:00,902 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:29:00,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:29:00,903 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:29:00,903 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:29:00,903 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:29:00,903 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:29:00,904 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:29:00,904 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:29:00,904 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:29:00,905 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:29:00,905 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:29:00,906 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:29:00,906 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:29:00,906 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:29:00,907 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:29:00,908 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:29:00,908 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:29:00,908 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:29:00,908 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:29:00,908 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 19:29:00,908 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 19:29:00,910 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:29:00,911 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-21 19:29:00,911 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:29:00,912 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:29:00,912 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:29:00,914 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:29:00,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:29:00,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:29:00,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:29:02,883 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:29:02,884 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:29:02,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:29:02 BoogieIcfgContainer [2021-02-21 19:29:02,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:29:02,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:29:02,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:29:02,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:29:02,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:28:59" (1/3) ... [2021-02-21 19:29:02,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f89ace0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:29:02, skipping insertion in model container [2021-02-21 19:29:02,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:29:00" (2/3) ... [2021-02-21 19:29:02,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f89ace0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:29:02, skipping insertion in model container [2021-02-21 19:29:02,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:29:02" (3/3) ... [2021-02-21 19:29:02,901 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product29.cil.c [2021-02-21 19:29:02,911 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:29:02,921 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:29:02,949 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:29:02,986 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:29:02,987 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:29:02,987 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:29:02,987 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:29:02,987 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:29:02,987 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:29:02,987 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:29:02,988 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:29:03,022 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states. [2021-02-21 19:29:03,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:29:03,055 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:29:03,062 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:29:03,063 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:29:03,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:29:03,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1409048827, now seen corresponding path program 1 times [2021-02-21 19:29:03,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:29:03,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877875364] [2021-02-21 19:29:03,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:29:03,198 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:29:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:03,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:03,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:03,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:03,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:04,217 WARN L202 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:29:04,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:29:04,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:04,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:04,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:04,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:29:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:04,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:04,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:04,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:29:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:04,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:04,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:04,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:29:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:04,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:04,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:04,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:29:04,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:04,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:04,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:04,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:29:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:04,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:04,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:04,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:29:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:04,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:04,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:04,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:29:04,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877875364] [2021-02-21 19:29:04,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:29:04,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:29:04,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027298445] [2021-02-21 19:29:04,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:29:04,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:29:04,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:29:04,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:29:04,571 INFO L87 Difference]: Start difference. First operand 316 states. Second operand 3 states. [2021-02-21 19:29:06,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:29:06,941 INFO L93 Difference]: Finished difference Result 471 states and 560 transitions. [2021-02-21 19:29:06,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:29:06,959 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:29:06,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:29:07,011 INFO L225 Difference]: With dead ends: 471 [2021-02-21 19:29:07,012 INFO L226 Difference]: Without dead ends: 295 [2021-02-21 19:29:07,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:29:07,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-02-21 19:29:07,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 254. [2021-02-21 19:29:07,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2021-02-21 19:29:07,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 275 transitions. [2021-02-21 19:29:07,327 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 275 transitions. Word has length 147 [2021-02-21 19:29:07,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:29:07,329 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 275 transitions. [2021-02-21 19:29:07,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:29:07,330 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 275 transitions. [2021-02-21 19:29:07,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:29:07,336 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:29:07,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:29:07,337 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:29:07,337 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:29:07,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:29:07,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1215336739, now seen corresponding path program 1 times [2021-02-21 19:29:07,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:29:07,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985281642] [2021-02-21 19:29:07,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:29:07,345 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:29:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:07,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:07,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:07,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:07,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:07,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:07,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:07,948 WARN L202 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:29:07,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:29:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:08,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:08,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:08,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:29:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:08,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:08,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:08,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:29:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:08,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:08,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:08,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:29:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:08,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:08,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:08,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:29:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:08,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:08,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:08,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:29:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:08,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:08,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:08,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:29:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:08,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:08,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:08,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:29:08,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985281642] [2021-02-21 19:29:08,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:29:08,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:29:08,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831621382] [2021-02-21 19:29:08,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:29:08,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:29:08,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:29:08,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:29:08,156 INFO L87 Difference]: Start difference. First operand 254 states and 275 transitions. Second operand 4 states. [2021-02-21 19:29:09,122 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:29:10,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:29:10,593 INFO L93 Difference]: Finished difference Result 387 states and 434 transitions. [2021-02-21 19:29:10,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:29:10,598 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:29:10,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:29:10,606 INFO L225 Difference]: With dead ends: 387 [2021-02-21 19:29:10,606 INFO L226 Difference]: Without dead ends: 278 [2021-02-21 19:29:10,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 19:29:10,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-02-21 19:29:10,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 244. [2021-02-21 19:29:10,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2021-02-21 19:29:10,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 262 transitions. [2021-02-21 19:29:10,738 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 262 transitions. Word has length 148 [2021-02-21 19:29:10,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:29:10,739 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 262 transitions. [2021-02-21 19:29:10,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:29:10,739 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 262 transitions. [2021-02-21 19:29:10,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-21 19:29:10,743 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:29:10,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:29:10,743 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:29:10,744 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:29:10,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:29:10,744 INFO L82 PathProgramCache]: Analyzing trace with hash -479134641, now seen corresponding path program 1 times [2021-02-21 19:29:10,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:29:10,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96080118] [2021-02-21 19:29:10,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:29:10,750 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:29:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:10,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:10,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:10,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:10,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:10,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:10,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:10,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:10,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:10,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:10,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:11,300 WARN L202 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:29:11,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:29:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:11,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:11,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:11,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:11,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:29:11,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:29:11,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:11,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:11,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:11,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:29:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:11,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:11,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:11,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:29:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:11,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:11,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:11,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:11,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:29:11,445 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:29:11,448 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:29:11,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:29:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:11,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:11,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:11,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:29:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:11,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:11,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:11,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 19:29:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:11,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:11,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:11,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:29:11,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96080118] [2021-02-21 19:29:11,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:29:11,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 19:29:11,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145638354] [2021-02-21 19:29:11,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 19:29:11,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:29:11,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 19:29:11,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 19:29:11,544 INFO L87 Difference]: Start difference. First operand 244 states and 262 transitions. Second operand 9 states. [2021-02-21 19:29:12,475 WARN L202 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:29:12,978 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:29:13,316 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:29:13,669 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:14,060 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:29:14,438 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:16,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:29:16,237 INFO L93 Difference]: Finished difference Result 407 states and 459 transitions. [2021-02-21 19:29:16,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 19:29:16,238 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-21 19:29:16,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:29:16,244 INFO L225 Difference]: With dead ends: 407 [2021-02-21 19:29:16,244 INFO L226 Difference]: Without dead ends: 278 [2021-02-21 19:29:16,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-21 19:29:16,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-02-21 19:29:16,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 244. [2021-02-21 19:29:16,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2021-02-21 19:29:16,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 261 transitions. [2021-02-21 19:29:16,364 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 261 transitions. Word has length 157 [2021-02-21 19:29:16,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:29:16,365 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 261 transitions. [2021-02-21 19:29:16,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 19:29:16,365 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 261 transitions. [2021-02-21 19:29:16,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-02-21 19:29:16,369 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:29:16,369 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] [2021-02-21 19:29:16,370 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:29:16,370 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:29:16,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:29:16,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1784752144, now seen corresponding path program 1 times [2021-02-21 19:29:16,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:29:16,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542087096] [2021-02-21 19:29:16,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:29:16,376 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:29:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:16,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:16,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:16,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:16,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:16,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:16,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:16,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:16,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:16,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:16,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:16,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:16,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:16,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:16,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:16,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:16,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:16,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:16,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:16,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:16,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:29:16,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:16,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:16,936 WARN L202 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:29:16,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:29:16,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:17,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:17,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:17,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:17,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:29:17,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:29:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:17,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:17,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:17,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:29:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:17,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:17,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:17,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:29:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:17,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:17,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:17,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:17,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:29:17,068 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:29:17,070 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:29:17,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:29:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:17,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:17,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:17,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-21 19:29:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:17,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:17,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:17,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:29:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:17,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:17,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:17,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:29:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:17,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:17,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:17,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-02-21 19:29:17,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:17,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:17,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:17,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:17,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:17,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:17,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:17,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-02-21 19:29:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:17,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:17,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:17,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:29:17,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542087096] [2021-02-21 19:29:17,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:29:17,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 19:29:17,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189213534] [2021-02-21 19:29:17,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 19:29:17,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:29:17,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 19:29:17,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-21 19:29:17,270 INFO L87 Difference]: Start difference. First operand 244 states and 261 transitions. Second operand 14 states. [2021-02-21 19:29:17,997 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:29:18,554 WARN L202 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:29:18,963 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:29:19,385 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:19,821 WARN L202 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:29:20,230 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:21,059 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:29:22,835 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:23,273 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:29:23,889 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:29:24,352 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:29:24,729 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:29:25,136 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:29:25,532 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:29:25,927 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:26,302 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:29:26,819 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:29:27,370 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:29:27,816 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:29:28,348 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:29:29,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:29:29,807 INFO L93 Difference]: Finished difference Result 716 states and 857 transitions. [2021-02-21 19:29:29,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 19:29:29,808 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 170 [2021-02-21 19:29:29,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:29:29,815 INFO L225 Difference]: With dead ends: 716 [2021-02-21 19:29:29,815 INFO L226 Difference]: Without dead ends: 587 [2021-02-21 19:29:29,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-21 19:29:29,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2021-02-21 19:29:30,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 480. [2021-02-21 19:29:30,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 480 states. [2021-02-21 19:29:30,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 534 transitions. [2021-02-21 19:29:30,095 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 534 transitions. Word has length 170 [2021-02-21 19:29:30,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:29:30,096 INFO L480 AbstractCegarLoop]: Abstraction has 480 states and 534 transitions. [2021-02-21 19:29:30,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 19:29:30,096 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 534 transitions. [2021-02-21 19:29:30,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-02-21 19:29:30,102 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:29:30,102 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] [2021-02-21 19:29:30,103 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:29:30,103 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:29:30,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:29:30,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1052909902, now seen corresponding path program 1 times [2021-02-21 19:29:30,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:29:30,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190130060] [2021-02-21 19:29:30,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:29:30,109 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:29:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:30,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:30,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:30,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:30,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:30,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:30,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:30,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:30,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:30,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:30,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:30,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:30,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:30,538 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:29:30,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:29:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:30,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:30,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:30,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:30,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:29:30,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:29:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:30,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:30,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:30,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:29:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:30,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:30,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:30,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:29:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:30,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:30,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:30,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:29:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:30,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:30,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:30,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-02-21 19:29:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:30,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:30,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:30,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:29:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:30,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:30,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:30,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-21 19:29:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:30,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:30,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:30,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:29:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:30,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:30,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:30,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:29:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:30,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:30,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:30,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-02-21 19:29:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:30,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:30,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:30,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-02-21 19:29:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:29:30,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:29:30,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:29:30,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:29:30,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190130060] [2021-02-21 19:29:30,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:29:30,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:29:30,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387961197] [2021-02-21 19:29:30,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:29:30,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:29:30,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:29:30,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:29:30,740 INFO L87 Difference]: Start difference. First operand 480 states and 534 transitions. Second operand 6 states. [2021-02-21 19:29:31,394 WARN L202 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:29:32,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:29:32,185 INFO L93 Difference]: Finished difference Result 697 states and 800 transitions. [2021-02-21 19:29:32,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 19:29:32,186 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 180 [2021-02-21 19:29:32,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:29:32,190 INFO L225 Difference]: With dead ends: 697 [2021-02-21 19:29:32,190 INFO L226 Difference]: Without dead ends: 332 [2021-02-21 19:29:32,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-02-21 19:29:32,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-02-21 19:29:32,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 311. [2021-02-21 19:29:32,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2021-02-21 19:29:32,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 328 transitions. [2021-02-21 19:29:32,351 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 328 transitions. Word has length 180 [2021-02-21 19:29:32,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:29:32,351 INFO L480 AbstractCegarLoop]: Abstraction has 311 states and 328 transitions. [2021-02-21 19:29:32,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:29:32,352 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 328 transitions. [2021-02-21 19:29:32,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-02-21 19:29:32,355 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:29:32,356 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:29:32,357 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:29:32,357 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:29:32,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:29:32,358 INFO L82 PathProgramCache]: Analyzing trace with hash 574643407, now seen corresponding path program 1 times [2021-02-21 19:29:32,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:29:32,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827981681] [2021-02-21 19:29:32,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY