/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_product06.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:01:24,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:01:24,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:01:24,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:01:24,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:01:24,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:01:24,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:01:24,759 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:01:24,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:01:24,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:01:24,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:01:24,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:01:24,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:01:24,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:01:24,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:01:24,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:01:24,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:01:24,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:01:24,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:01:24,782 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:01:24,784 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:01:24,785 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:01:24,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:01:24,788 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:01:24,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:01:24,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:01:24,791 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:01:24,792 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:01:24,793 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:01:24,794 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:01:24,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:01:24,795 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:01:24,796 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:01:24,797 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:01:24,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:01:24,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:01:24,799 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:01:24,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:01:24,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:01:24,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:01:24,801 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:01:24,803 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 19:01:24,816 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:01:24,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:01:24,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:01:24,822 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:01:24,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:01:24,822 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:01:24,822 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:01:24,823 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:01:24,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:01:24,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:01:24,823 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:01:24,824 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:01:24,826 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:01:24,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:01:24,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:01:24,826 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:01:24,827 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:01:24,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:01:24,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:01:24,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:01:24,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:01:24,830 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:01:24,830 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:01:25,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:01:25,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:01:25,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:01:25,260 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:01:25,268 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:01:25,269 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product06.cil.c [2021-02-21 19:01:25,367 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f158547d6/de091d6f1fce4b33ba880bd8efffe1b1/FLAGed134dd4a [2021-02-21 19:01:26,055 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:01:26,056 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product06.cil.c [2021-02-21 19:01:26,069 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f158547d6/de091d6f1fce4b33ba880bd8efffe1b1/FLAGed134dd4a [2021-02-21 19:01:26,308 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f158547d6/de091d6f1fce4b33ba880bd8efffe1b1 [2021-02-21 19:01:26,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:01:26,325 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:01:26,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:01:26,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:01:26,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:01:26,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:01:26" (1/1) ... [2021-02-21 19:01:26,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@282cd639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:01:26, skipping insertion in model container [2021-02-21 19:01:26,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:01:26" (1/1) ... [2021-02-21 19:01:26,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:01:26,385 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:01:26,734 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_product06.cil.c[16864,16877] [2021-02-21 19:01:26,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:01:26,748 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:01:26,821 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_product06.cil.c[16864,16877] [2021-02-21 19:01:26,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:01:26,855 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:01:26,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:01:26 WrapperNode [2021-02-21 19:01:26,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:01:26,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:01:26,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:01:26,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:01:26,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:01:26" (1/1) ... [2021-02-21 19:01:26,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:01:26" (1/1) ... [2021-02-21 19:01:26,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:01:26" (1/1) ... [2021-02-21 19:01:26,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:01:26" (1/1) ... [2021-02-21 19:01:26,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:01:26" (1/1) ... [2021-02-21 19:01:26,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:01:26" (1/1) ... [2021-02-21 19:01:26,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:01:26" (1/1) ... [2021-02-21 19:01:26,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:01:26,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:01:26,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:01:26,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:01:26,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:01:26" (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 19:01:27,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:01:27,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:01:27,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:01:27,116 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:01:27,116 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:01:27,117 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:01:27,117 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:01:27,117 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:01:27,117 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:01:27,118 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:01:27,119 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:01:27,119 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:01:27,119 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:01:27,119 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:01:27,119 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:01:27,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:01:27,120 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:01:27,120 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:01:27,121 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:01:27,121 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:01:27,124 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:01:27,124 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:01:27,125 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:01:27,125 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:01:27,125 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 19:01:27,125 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:01:27,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:01:27,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:01:27,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:01:27,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:01:27,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:01:27,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:01:27,126 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:01:27,127 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:01:27,127 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:01:27,127 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:01:27,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:01:27,127 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:01:27,127 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:01:27,127 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:01:27,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:01:27,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:01:27,128 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:01:27,128 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:01:27,128 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:01:27,128 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:01:27,129 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:01:27,129 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:01:27,129 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:01:27,129 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:01:27,129 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:01:27,129 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:01:27,129 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:01:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:01:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:01:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:01:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:01:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:01:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:01:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:01:27,131 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:01:27,131 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:01:27,131 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:01:27,131 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:01:27,131 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:01:27,131 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 19:01:27,131 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:01:27,131 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:01:27,132 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:01:27,132 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:01:27,132 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:01:27,132 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:01:27,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:01:27,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:01:27,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:01:27,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:01:27,133 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:01:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:01:27,135 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:01:27,135 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:01:27,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:01:27,135 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:01:27,135 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:01:27,136 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:01:27,136 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:01:27,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:01:27,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:01:27,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:01:28,626 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:01:28,626 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:01:28,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:01:28 BoogieIcfgContainer [2021-02-21 19:01:28,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:01:28,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:01:28,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:01:28,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:01:28,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:01:26" (1/3) ... [2021-02-21 19:01:28,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f14f3c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:01:28, skipping insertion in model container [2021-02-21 19:01:28,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:01:26" (2/3) ... [2021-02-21 19:01:28,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f14f3c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:01:28, skipping insertion in model container [2021-02-21 19:01:28,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:01:28" (3/3) ... [2021-02-21 19:01:28,638 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product06.cil.c [2021-02-21 19:01:28,645 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:01:28,651 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:01:28,669 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:01:28,692 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:01:28,693 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:01:28,693 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:01:28,693 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:01:28,693 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:01:28,693 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:01:28,693 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:01:28,694 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:01:28,715 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states. [2021-02-21 19:01:28,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:01:28,734 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:01:28,736 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 19:01:28,736 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:01:28,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:01:28,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1128562642, now seen corresponding path program 1 times [2021-02-21 19:01:28,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:01:28,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403557261] [2021-02-21 19:01:28,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:01:28,838 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:01:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:29,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:29,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:29,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:29,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:29,875 WARN L202 SmtUtils]: Spent 607.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:01:29,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:01:29,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:29,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:29,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:29,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:01:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:29,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:29,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:29,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:01:30,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:30,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:30,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:30,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:01:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:30,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:30,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:30,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:01:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:30,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:30,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:30,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:01:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:30,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:30,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:30,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:01:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:30,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:30,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:30,092 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 19:01:30,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403557261] [2021-02-21 19:01:30,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:01:30,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:01:30,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244538789] [2021-02-21 19:01:30,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:01:30,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:01:30,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:01:30,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:01:30,120 INFO L87 Difference]: Start difference. First operand 279 states. Second operand 3 states. [2021-02-21 19:01:32,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:01:32,166 INFO L93 Difference]: Finished difference Result 416 states and 495 transitions. [2021-02-21 19:01:32,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:01:32,169 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:01:32,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:01:32,186 INFO L225 Difference]: With dead ends: 416 [2021-02-21 19:01:32,186 INFO L226 Difference]: Without dead ends: 267 [2021-02-21 19:01:32,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:01:32,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-02-21 19:01:32,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 227. [2021-02-21 19:01:32,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2021-02-21 19:01:32,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 243 transitions. [2021-02-21 19:01:32,353 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 243 transitions. Word has length 147 [2021-02-21 19:01:32,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:01:32,357 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 243 transitions. [2021-02-21 19:01:32,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:01:32,357 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 243 transitions. [2021-02-21 19:01:32,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:01:32,371 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:01:32,372 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 19:01:32,372 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:01:32,372 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:01:32,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:01:32,373 INFO L82 PathProgramCache]: Analyzing trace with hash -204713246, now seen corresponding path program 1 times [2021-02-21 19:01:32,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:01:32,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229180441] [2021-02-21 19:01:32,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:01:32,384 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:01:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:32,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:32,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:32,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:32,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:32,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:32,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:33,063 WARN L202 SmtUtils]: Spent 563.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:01:33,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:01:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:33,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:33,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:33,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:01:33,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:33,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:33,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:33,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:01:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:33,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:33,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:33,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:01:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:33,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:33,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:33,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:01:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:33,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:33,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:33,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:01:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:33,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:33,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:33,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:01:33,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:33,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:33,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:33,179 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 19:01:33,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229180441] [2021-02-21 19:01:33,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:01:33,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:01:33,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198470619] [2021-02-21 19:01:33,181 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:01:33,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:01:33,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:01:33,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:01:33,182 INFO L87 Difference]: Start difference. First operand 227 states and 243 transitions. Second operand 4 states. [2021-02-21 19:01:34,343 WARN L202 SmtUtils]: Spent 593.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:01:35,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:01:35,515 INFO L93 Difference]: Finished difference Result 328 states and 365 transitions. [2021-02-21 19:01:35,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:01:35,516 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:01:35,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:01:35,521 INFO L225 Difference]: With dead ends: 328 [2021-02-21 19:01:35,521 INFO L226 Difference]: Without dead ends: 250 [2021-02-21 19:01:35,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 19:01:35,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-02-21 19:01:35,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 217. [2021-02-21 19:01:35,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2021-02-21 19:01:35,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 230 transitions. [2021-02-21 19:01:35,604 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 230 transitions. Word has length 148 [2021-02-21 19:01:35,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:01:35,604 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 230 transitions. [2021-02-21 19:01:35,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:01:35,605 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 230 transitions. [2021-02-21 19:01:35,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-21 19:01:35,607 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:01:35,607 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] [2021-02-21 19:01:35,607 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:01:35,608 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:01:35,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:01:35,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1875333793, now seen corresponding path program 1 times [2021-02-21 19:01:35,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:01:35,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143799726] [2021-02-21 19:01:35,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:01:35,612 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:01:35,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:35,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:35,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:35,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:35,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:35,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:35,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:35,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:35,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:35,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:35,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:01:35,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:35,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:36,292 WARN L202 SmtUtils]: Spent 553.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:01:36,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:01:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:36,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:36,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:36,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:01:36,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:36,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:36,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:36,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:01:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:36,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:36,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:36,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:01:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:36,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:36,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:36,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:36,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:01:36,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:36,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:01:36,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:01:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:36,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:36,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:36,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:01:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:36,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:36,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:36,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-21 19:01:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:36,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:36,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:36,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:01:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:36,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:36,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:36,568 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 19:01:36,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143799726] [2021-02-21 19:01:36,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:01:36,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 19:01:36,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710845098] [2021-02-21 19:01:36,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 19:01:36,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:01:36,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 19:01:36,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 19:01:36,572 INFO L87 Difference]: Start difference. First operand 217 states and 230 transitions. Second operand 10 states. [2021-02-21 19:01:37,555 WARN L202 SmtUtils]: Spent 551.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:01:38,366 WARN L202 SmtUtils]: Spent 639.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:01:39,010 WARN L202 SmtUtils]: Spent 612.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 19:01:39,698 WARN L202 SmtUtils]: Spent 629.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:01:40,360 WARN L202 SmtUtils]: Spent 633.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:01:41,008 WARN L202 SmtUtils]: Spent 618.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:01:42,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:01:42,964 INFO L93 Difference]: Finished difference Result 374 states and 427 transitions. [2021-02-21 19:01:42,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 19:01:42,965 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-21 19:01:42,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:01:42,969 INFO L225 Difference]: With dead ends: 374 [2021-02-21 19:01:42,969 INFO L226 Difference]: Without dead ends: 272 [2021-02-21 19:01:42,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-21 19:01:42,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-02-21 19:01:43,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 217. [2021-02-21 19:01:43,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2021-02-21 19:01:43,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 229 transitions. [2021-02-21 19:01:43,073 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 229 transitions. Word has length 161 [2021-02-21 19:01:43,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:01:43,074 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 229 transitions. [2021-02-21 19:01:43,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 19:01:43,074 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 229 transitions. [2021-02-21 19:01:43,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-02-21 19:01:43,077 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:01:43,077 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] [2021-02-21 19:01:43,077 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:01:43,077 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:01:43,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:01:43,078 INFO L82 PathProgramCache]: Analyzing trace with hash 205026164, now seen corresponding path program 1 times [2021-02-21 19:01:43,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:01:43,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426590187] [2021-02-21 19:01:43,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:01:43,081 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:01:43,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:43,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:43,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:43,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:43,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:43,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:43,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:43,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:43,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:43,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:43,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:01:43,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:43,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:01:43,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:43,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:01:43,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:43,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:01:43,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:43,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:01:43,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:43,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:01:43,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:43,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:43,754 WARN L202 SmtUtils]: Spent 503.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:01:43,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:01:43,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:43,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:43,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:43,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:43,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:01:43,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:01:43,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:43,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:43,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:43,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:01:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:43,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:43,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:43,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:01:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:43,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:43,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:43,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:43,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:01:43,858 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:01:43,859 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:01:43,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:01:43,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:43,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:43,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:43,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:01:43,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:43,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:43,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:43,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:01:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:43,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:43,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:43,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:01:43,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:43,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:43,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:43,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 19:01:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:43,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:43,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:43,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:43,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:43,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:43,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:44,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-02-21 19:01:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:44,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:44,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:44,080 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 19:01:44,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426590187] [2021-02-21 19:01:44,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:01:44,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-21 19:01:44,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610897964] [2021-02-21 19:01:44,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-21 19:01:44,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:01:44,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-21 19:01:44,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-02-21 19:01:44,083 INFO L87 Difference]: Start difference. First operand 217 states and 229 transitions. Second operand 15 states. [2021-02-21 19:01:45,107 WARN L202 SmtUtils]: Spent 588.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:01:45,925 WARN L202 SmtUtils]: Spent 600.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:01:46,614 WARN L202 SmtUtils]: Spent 647.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:01:47,306 WARN L202 SmtUtils]: Spent 613.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:01:47,989 WARN L202 SmtUtils]: Spent 632.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:01:48,659 WARN L202 SmtUtils]: Spent 610.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:01:49,859 WARN L202 SmtUtils]: Spent 547.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:01:51,735 WARN L202 SmtUtils]: Spent 619.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:01:52,433 WARN L202 SmtUtils]: Spent 620.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:01:53,264 WARN L202 SmtUtils]: Spent 605.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:01:53,988 WARN L202 SmtUtils]: Spent 600.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:01:54,628 WARN L202 SmtUtils]: Spent 597.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:01:55,300 WARN L202 SmtUtils]: Spent 631.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:01:55,982 WARN L202 SmtUtils]: Spent 633.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:01:56,635 WARN L202 SmtUtils]: Spent 612.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:01:57,294 WARN L202 SmtUtils]: Spent 615.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:01:58,051 WARN L202 SmtUtils]: Spent 619.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:01:58,939 WARN L202 SmtUtils]: Spent 633.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:01:59,641 WARN L202 SmtUtils]: Spent 621.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:02:00,414 WARN L202 SmtUtils]: Spent 602.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:02:02,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:02:02,835 INFO L93 Difference]: Finished difference Result 738 states and 934 transitions. [2021-02-21 19:02:02,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-02-21 19:02:02,836 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 169 [2021-02-21 19:02:02,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:02:02,844 INFO L225 Difference]: With dead ends: 738 [2021-02-21 19:02:02,844 INFO L226 Difference]: Without dead ends: 636 [2021-02-21 19:02:02,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=386, Invalid=1336, Unknown=0, NotChecked=0, Total=1722 [2021-02-21 19:02:02,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-02-21 19:02:03,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 397. [2021-02-21 19:02:03,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2021-02-21 19:02:03,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 435 transitions. [2021-02-21 19:02:03,049 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 435 transitions. Word has length 169 [2021-02-21 19:02:03,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:02:03,050 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 435 transitions. [2021-02-21 19:02:03,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-21 19:02:03,050 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 435 transitions. [2021-02-21 19:02:03,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-02-21 19:02:03,053 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:02:03,053 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] [2021-02-21 19:02:03,054 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:02:03,054 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:02:03,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:02:03,055 INFO L82 PathProgramCache]: Analyzing trace with hash 476107734, now seen corresponding path program 1 times [2021-02-21 19:02:03,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:02:03,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813417786] [2021-02-21 19:02:03,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:02:03,058 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:02:03,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:03,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:03,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:03,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:03,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:03,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:03,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:03,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:03,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:03,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:03,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:03,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:03,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:03,693 WARN L202 SmtUtils]: Spent 549.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:02:03,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:02:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:03,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:03,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:03,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:03,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:02:03,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:02:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:03,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:03,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:03,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:02:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:03,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:03,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:03,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:02:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:03,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:03,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:03,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:02:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:03,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:03,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:03,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-02-21 19:02:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:03,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:03,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:03,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-21 19:02:03,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:03,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:03,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:03,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 19:02:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:03,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:03,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:03,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 19:02:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:03,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:03,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:03,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:02:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:03,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:03,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:03,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-02-21 19:02:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:03,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:03,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:03,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-02-21 19:02:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:02:03,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:03,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:03,871 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 19:02:03,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813417786] [2021-02-21 19:02:03,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:02:03,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 19:02:03,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778518261] [2021-02-21 19:02:03,872 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 19:02:03,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:02:03,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 19:02:03,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-21 19:02:03,873 INFO L87 Difference]: Start difference. First operand 397 states and 435 transitions. Second operand 7 states. [2021-02-21 19:02:04,834 WARN L202 SmtUtils]: Spent 605.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:02:05,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:02:05,965 INFO L93 Difference]: Finished difference Result 677 states and 788 transitions. [2021-02-21 19:02:05,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 19:02:05,966 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2021-02-21 19:02:05,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:02:05,970 INFO L225 Difference]: With dead ends: 677 [2021-02-21 19:02:05,970 INFO L226 Difference]: Without dead ends: 395 [2021-02-21 19:02:05,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-02-21 19:02:05,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-02-21 19:02:06,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 308. [2021-02-21 19:02:06,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2021-02-21 19:02:06,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 325 transitions. [2021-02-21 19:02:06,102 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 325 transitions. Word has length 179 [2021-02-21 19:02:06,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:02:06,103 INFO L480 AbstractCegarLoop]: Abstraction has 308 states and 325 transitions. [2021-02-21 19:02:06,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 19:02:06,103 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 325 transitions. [2021-02-21 19:02:06,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-02-21 19:02:06,106 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:02:06,107 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:02:06,107 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:02:06,107 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:02:06,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:02:06,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1959899651, now seen corresponding path program 1 times [2021-02-21 19:02:06,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:02:06,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842054660] [2021-02-21 19:02:06,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:02:06,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:06,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:07,019 WARN L202 SmtUtils]: Spent 768.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 105 [2021-02-21 19:02:07,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:07,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 253 [2021-02-21 19:02:07,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:07,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:02:07,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:02:07,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1