/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_product17.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:41:46,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:41:46,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:41:46,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:41:46,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:41:46,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:41:46,705 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:41:46,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:41:46,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:41:46,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:41:46,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:41:46,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:41:46,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:41:46,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:41:46,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:41:46,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:41:46,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:41:46,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:41:46,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:41:46,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:41:46,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:41:46,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:41:46,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:41:46,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:41:46,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:41:46,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:41:46,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:41:46,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:41:46,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:41:46,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:41:46,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:41:46,775 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:41:46,776 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:41:46,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:41:46,783 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:41:46,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:41:46,785 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:41:46,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:41:46,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:41:46,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:41:46,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:41:46,791 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 16:41:46,816 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:41:46,816 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:41:46,823 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:41:46,823 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:41:46,823 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:41:46,823 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:41:46,824 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:41:46,824 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:41:46,824 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:41:46,824 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:41:46,826 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:41:46,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:41:46,826 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:41:46,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:41:46,827 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:41:46,827 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:41:46,827 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:41:46,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:41:46,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:41:46,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:41:46,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:41:46,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:41:46,829 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:41:47,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:41:47,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:41:47,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:41:47,280 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:41:47,285 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:41:47,287 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product17.cil.c [2021-02-23 16:41:47,371 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78d4e4732/310137e6d1a54fe888e91c3b00637f87/FLAG68d1c10e5 [2021-02-23 16:41:48,188 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:41:48,188 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product17.cil.c [2021-02-23 16:41:48,219 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78d4e4732/310137e6d1a54fe888e91c3b00637f87/FLAG68d1c10e5 [2021-02-23 16:41:48,430 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78d4e4732/310137e6d1a54fe888e91c3b00637f87 [2021-02-23 16:41:48,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:41:48,454 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:41:48,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:41:48,459 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:41:48,463 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:41:48,464 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:41:48" (1/1) ... [2021-02-23 16:41:48,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a740139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:41:48, skipping insertion in model container [2021-02-23 16:41:48,466 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:41:48" (1/1) ... [2021-02-23 16:41:48,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:41:48,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:41:48,705 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_product17.cil.c[2999,3012] [2021-02-23 16:41:48,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:41:48,823 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:41:48,847 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_product17.cil.c[2999,3012] [2021-02-23 16:41:48,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:41:48,940 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:41:48,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:41:48 WrapperNode [2021-02-23 16:41:48,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:41:48,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:41:48,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:41:48,943 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:41:48,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:41:48" (1/1) ... [2021-02-23 16:41:48,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:41:48" (1/1) ... [2021-02-23 16:41:48,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:41:48" (1/1) ... [2021-02-23 16:41:48,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:41:48" (1/1) ... [2021-02-23 16:41:49,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:41:48" (1/1) ... [2021-02-23 16:41:49,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:41:48" (1/1) ... [2021-02-23 16:41:49,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:41:48" (1/1) ... [2021-02-23 16:41:49,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:41:49,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:41:49,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:41:49,053 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:41:49,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:41:48" (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 16:41:49,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:41:49,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:41:49,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:41:49,180 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:41:49,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:41:49,180 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:41:49,181 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:41:49,181 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:41:49,182 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:41:49,182 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:41:49,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:41:49,183 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:41:49,183 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:41:49,183 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:41:49,184 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:41:49,184 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:41:49,184 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:41:49,184 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:41:49,186 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:41:49,186 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:41:49,188 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:41:49,189 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:41:49,189 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:41:49,190 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:41:49,190 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-23 16:41:49,190 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:41:49,190 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:41:49,190 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:41:49,191 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:41:49,191 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:41:49,191 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:41:49,192 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-23 16:41:49,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:41:49,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:41:49,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:41:49,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:41:49,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:41:49,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:41:49,193 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:41:49,193 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:41:49,193 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:41:49,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:41:49,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:41:49,194 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:41:49,194 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:41:49,194 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:41:49,194 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:41:49,194 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:41:49,194 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:41:49,194 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:41:49,195 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:41:49,195 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:41:49,195 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:41:49,195 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:41:49,195 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:41:49,195 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:41:49,195 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:41:49,196 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:41:49,196 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:41:49,196 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:41:49,196 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:41:49,196 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:41:49,196 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:41:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:41:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:41:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-23 16:41:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:41:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:41:49,198 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:41:49,198 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:41:49,198 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-23 16:41:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:41:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:41:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:41:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:41:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:41:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:41:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:41:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:41:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:41:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:41:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:41:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:41:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:41:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:41:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:41:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:41:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:41:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:41:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:41:50,419 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:41:50,419 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:41:50,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:41:50 BoogieIcfgContainer [2021-02-23 16:41:50,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:41:50,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:41:50,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:41:50,429 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:41:50,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:41:48" (1/3) ... [2021-02-23 16:41:50,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aa8f528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:41:50, skipping insertion in model container [2021-02-23 16:41:50,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:41:48" (2/3) ... [2021-02-23 16:41:50,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aa8f528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:41:50, skipping insertion in model container [2021-02-23 16:41:50,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:41:50" (3/3) ... [2021-02-23 16:41:50,433 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product17.cil.c [2021-02-23 16:41:50,441 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:41:50,447 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:41:50,468 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:41:50,495 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:41:50,495 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:41:50,495 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:41:50,495 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:41:50,496 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:41:50,496 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:41:50,496 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:41:50,496 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:41:50,520 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states. [2021-02-23 16:41:50,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:41:50,542 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:41:50,543 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] [2021-02-23 16:41:50,543 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:41:50,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:41:50,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1252926623, now seen corresponding path program 1 times [2021-02-23 16:41:50,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:41:50,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344137925] [2021-02-23 16:41:50,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:41:50,663 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:41:50,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:51,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:51,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:51,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:51,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:51,457 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:41:51,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:41:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:51,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:51,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:51,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:41:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:51,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:51,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:51,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:41:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:51,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:51,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:51,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:41:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:51,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:51,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:51,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:41:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:51,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:51,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:51,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:41:51,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:51,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:51,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:51,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:41:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:51,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:51,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:51,733 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 16:41:51,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344137925] [2021-02-23 16:41:51,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:41:51,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:41:51,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946190831] [2021-02-23 16:41:51,745 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:41:51,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:41:51,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:41:51,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:41:51,764 INFO L87 Difference]: Start difference. First operand 281 states. Second operand 3 states. [2021-02-23 16:41:53,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:41:53,438 INFO L93 Difference]: Finished difference Result 419 states and 499 transitions. [2021-02-23 16:41:53,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:41:53,440 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:41:53,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:41:53,457 INFO L225 Difference]: With dead ends: 419 [2021-02-23 16:41:53,457 INFO L226 Difference]: Without dead ends: 268 [2021-02-23 16:41:53,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:41:53,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-02-23 16:41:53,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 229. [2021-02-23 16:41:53,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2021-02-23 16:41:53,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 246 transitions. [2021-02-23 16:41:53,656 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 246 transitions. Word has length 147 [2021-02-23 16:41:53,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:41:53,657 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 246 transitions. [2021-02-23 16:41:53,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:41:53,658 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 246 transitions. [2021-02-23 16:41:53,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:41:53,663 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:41:53,663 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] [2021-02-23 16:41:53,664 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:41:53,664 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:41:53,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:41:53,665 INFO L82 PathProgramCache]: Analyzing trace with hash -794316413, now seen corresponding path program 1 times [2021-02-23 16:41:53,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:41:53,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987048816] [2021-02-23 16:41:53,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:41:53,670 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:41:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:53,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:53,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:53,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:53,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:41:53,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:53,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:54,162 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:41:54,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:41:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:54,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:54,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:54,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:41:54,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:54,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:54,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:54,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:41:54,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:54,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:54,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:54,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:41:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:54,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:54,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:54,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:41:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:54,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:54,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:54,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:41:54,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:54,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:54,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:54,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:41:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:54,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:54,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:54,339 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 16:41:54,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987048816] [2021-02-23 16:41:54,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:41:54,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:41:54,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396263188] [2021-02-23 16:41:54,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:41:54,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:41:54,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:41:54,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:41:54,343 INFO L87 Difference]: Start difference. First operand 229 states and 246 transitions. Second operand 4 states. [2021-02-23 16:41:55,202 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:41:56,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:41:56,052 INFO L93 Difference]: Finished difference Result 335 states and 373 transitions. [2021-02-23 16:41:56,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:41:56,053 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:41:56,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:41:56,060 INFO L225 Difference]: With dead ends: 335 [2021-02-23 16:41:56,060 INFO L226 Difference]: Without dead ends: 251 [2021-02-23 16:41:56,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 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 16:41:56,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-02-23 16:41:56,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 219. [2021-02-23 16:41:56,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2021-02-23 16:41:56,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 233 transitions. [2021-02-23 16:41:56,148 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 233 transitions. Word has length 148 [2021-02-23 16:41:56,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:41:56,149 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 233 transitions. [2021-02-23 16:41:56,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:41:56,149 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 233 transitions. [2021-02-23 16:41:56,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-23 16:41:56,153 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:41:56,153 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] [2021-02-23 16:41:56,153 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:41:56,154 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:41:56,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:41:56,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1387373773, now seen corresponding path program 1 times [2021-02-23 16:41:56,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:41:56,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849665589] [2021-02-23 16:41:56,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:41:56,159 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:41:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:56,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:56,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:41:56,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:56,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:41:56,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:56,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:41:56,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:56,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:41:56,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:56,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:56,685 WARN L202 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:41:56,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:41:56,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:56,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:56,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:56,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:56,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:41:56,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:41:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:56,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:56,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:56,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:41:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:56,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:56,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:56,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:41:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:56,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:56,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:56,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:56,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:41:56,805 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:41:56,806 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:41:56,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:41:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:56,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:56,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:56,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:41:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:56,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:56,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:56,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-23 16:41:56,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:41:56,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:41:56,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:41:56,894 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 16:41:56,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849665589] [2021-02-23 16:41:56,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:41:56,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:41:56,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929192632] [2021-02-23 16:41:56,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:41:56,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:41:56,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:41:56,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:41:56,897 INFO L87 Difference]: Start difference. First operand 219 states and 233 transitions. Second operand 9 states. [2021-02-23 16:41:57,561 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:41:58,001 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:41:58,391 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:41:58,795 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:41:59,188 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:41:59,562 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:42:00,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:42:00,881 INFO L93 Difference]: Finished difference Result 355 states and 398 transitions. [2021-02-23 16:42:00,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 16:42:00,882 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-23 16:42:00,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:42:00,886 INFO L225 Difference]: With dead ends: 355 [2021-02-23 16:42:00,886 INFO L226 Difference]: Without dead ends: 251 [2021-02-23 16:42:00,888 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 [2021-02-23 16:42:00,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-02-23 16:42:00,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 219. [2021-02-23 16:42:00,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2021-02-23 16:42:00,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 232 transitions. [2021-02-23 16:42:00,979 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 232 transitions. Word has length 157 [2021-02-23 16:42:00,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:42:00,980 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 232 transitions. [2021-02-23 16:42:00,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:42:00,980 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 232 transitions. [2021-02-23 16:42:00,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-02-23 16:42:00,983 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:42:00,983 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] [2021-02-23 16:42:00,984 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:42:00,984 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:42:00,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:42:00,985 INFO L82 PathProgramCache]: Analyzing trace with hash 936594464, now seen corresponding path program 1 times [2021-02-23 16:42:00,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:42:00,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136963637] [2021-02-23 16:42:00,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:42:00,989 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:42:01,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:01,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:01,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:01,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:01,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:01,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:01,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:01,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:01,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:01,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:01,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:42:01,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:01,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:42:01,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:01,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:42:01,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:01,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:42:01,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:01,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:42:01,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:01,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:42:01,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:01,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:01,527 WARN L202 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:42:01,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:42:01,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:01,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:01,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:01,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:01,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:42:01,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:42:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:01,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:01,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:01,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:42:01,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:01,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:01,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:01,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:42:01,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:01,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:01,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:01,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:01,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:42:01,627 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:42:01,628 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:42:01,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:42:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:01,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:01,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:01,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-23 16:42:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:01,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:01,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:01,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:42:01,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:01,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:01,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:01,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-02-23 16:42:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:01,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:01,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:01,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:01,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:01,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:01,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:01,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-23 16:42:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:01,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:01,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:01,774 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 16:42:01,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136963637] [2021-02-23 16:42:01,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:42:01,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 16:42:01,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433328284] [2021-02-23 16:42:01,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 16:42:01,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:42:01,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 16:42:01,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-23 16:42:01,777 INFO L87 Difference]: Start difference. First operand 219 states and 232 transitions. Second operand 14 states. [2021-02-23 16:42:02,510 WARN L202 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:42:02,993 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:42:03,412 WARN L202 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:42:03,840 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:42:04,176 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:42:04,542 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:42:05,363 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:42:06,576 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:42:06,999 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:42:07,473 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:42:07,930 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:42:08,286 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:42:08,662 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:42:09,045 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:42:09,406 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:42:09,769 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:42:10,194 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:42:10,708 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:42:11,101 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:42:11,526 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:42:12,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:42:12,772 INFO L93 Difference]: Finished difference Result 610 states and 732 transitions. [2021-02-23 16:42:12,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 16:42:12,775 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 165 [2021-02-23 16:42:12,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:42:12,781 INFO L225 Difference]: With dead ends: 610 [2021-02-23 16:42:12,781 INFO L226 Difference]: Without dead ends: 506 [2021-02-23 16:42:12,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-23 16:42:12,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-02-23 16:42:12,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 403. [2021-02-23 16:42:12,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2021-02-23 16:42:13,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 444 transitions. [2021-02-23 16:42:13,003 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 444 transitions. Word has length 165 [2021-02-23 16:42:13,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:42:13,003 INFO L480 AbstractCegarLoop]: Abstraction has 403 states and 444 transitions. [2021-02-23 16:42:13,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 16:42:13,004 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 444 transitions. [2021-02-23 16:42:13,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-02-23 16:42:13,007 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:42:13,007 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] [2021-02-23 16:42:13,007 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:42:13,007 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:42:13,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:42:13,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1110733140, now seen corresponding path program 1 times [2021-02-23 16:42:13,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:42:13,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014849430] [2021-02-23 16:42:13,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:42:13,011 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:42:13,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:13,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:13,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:13,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:13,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:13,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:13,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:13,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:13,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:13,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:13,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:13,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:13,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:13,360 WARN L202 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:42:13,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:42:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:13,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:13,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:13,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:13,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:42:13,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:42:13,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:13,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:13,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:13,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:42:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:13,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:13,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:13,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:42:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:13,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:13,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:13,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:42:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:13,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:13,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:13,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-02-23 16:42:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:13,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:13,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:13,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:42:13,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:13,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:13,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:13,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:42:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:13,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:13,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:13,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-02-23 16:42:13,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:13,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:13,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:13,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-02-23 16:42:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:42:13,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:42:13,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:42:13,517 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 16:42:13,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014849430] [2021-02-23 16:42:13,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:42:13,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 16:42:13,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208070496] [2021-02-23 16:42:13,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 16:42:13,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:42:13,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 16:42:13,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 16:42:13,520 INFO L87 Difference]: Start difference. First operand 403 states and 444 transitions. Second operand 6 states. [2021-02-23 16:42:14,167 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:42:14,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:42:14,879 INFO L93 Difference]: Finished difference Result 605 states and 688 transitions. [2021-02-23 16:42:14,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 16:42:14,880 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2021-02-23 16:42:14,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:42:14,882 INFO L225 Difference]: With dead ends: 605 [2021-02-23 16:42:14,882 INFO L226 Difference]: Without dead ends: 317 [2021-02-23 16:42:14,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-23 16:42:14,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-02-23 16:42:15,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 296. [2021-02-23 16:42:15,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2021-02-23 16:42:15,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 313 transitions. [2021-02-23 16:42:15,003 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 313 transitions. Word has length 170 [2021-02-23 16:42:15,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:42:15,003 INFO L480 AbstractCegarLoop]: Abstraction has 296 states and 313 transitions. [2021-02-23 16:42:15,004 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 16:42:15,004 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 313 transitions. [2021-02-23 16:42:15,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-02-23 16:42:15,007 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:42:15,007 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:15,008 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:42:15,008 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:42:15,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:42:15,009 INFO L82 PathProgramCache]: Analyzing trace with hash -2062485954, now seen corresponding path program 1 times [2021-02-23 16:42:15,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:42:15,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905005795] [2021-02-23 16:42:15,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY