/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-18 17:13:31,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 17:13:31,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 17:13:31,907 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-18 17:13:31,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-18 17:13:31,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-18 17:13:31,911 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-18 17:13:31,915 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-18 17:13:31,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-18 17:13:31,919 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-18 17:13:31,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-18 17:13:31,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-18 17:13:31,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 17:13:31,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 17:13:31,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 17:13:31,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 17:13:31,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 17:13:31,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 17:13:31,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 17:13:31,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 17:13:31,933 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 17:13:31,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 17:13:31,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 17:13:31,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 17:13:31,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 17:13:31,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-18 17:13:31,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-18 17:13:31,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-18 17:13:31,941 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-18 17:13:31,941 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-18 17:13:31,942 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-18 17:13:31,942 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-18 17:13:31,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-18 17:13:31,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-18 17:13:31,944 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-18 17:13:31,945 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-18 17:13:31,945 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-18 17:13:31,945 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-18 17:13:31,945 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-18 17:13:31,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 17:13:31,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 17:13:31,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 17:13:31,947 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-18 17:13:31,955 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 17:13:31,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 17:13:31,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 17:13:31,958 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-18 17:13:31,958 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 17:13:31,958 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-18 17:13:31,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 17:13:31,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 17:13:31,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 17:13:31,959 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 17:13:31,959 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-18 17:13:31,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 17:13:31,959 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 17:13:31,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 17:13:31,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 17:13:31,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 17:13:31,959 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 17:13:31,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 17:13:31,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 17:13:31,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 17:13:31,960 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 17:13:31,960 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-18 17:13:31,960 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 17:13:32,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 17:13:32,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 17:13:32,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 17:13:32,155 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 17:13:32,156 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 17:13:32,157 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c [2022-03-18 17:13:32,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6d791e0b/be17d1a29b0445219921cb3879c80ed1/FLAGf4ed8daf4 [2022-03-18 17:13:32,489 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 17:13:32,490 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c [2022-03-18 17:13:32,494 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6d791e0b/be17d1a29b0445219921cb3879c80ed1/FLAGf4ed8daf4 [2022-03-18 17:13:32,921 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6d791e0b/be17d1a29b0445219921cb3879c80ed1 [2022-03-18 17:13:32,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 17:13:32,923 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-18 17:13:32,924 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 17:13:32,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 17:13:32,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 17:13:32,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 05:13:32" (1/1) ... [2022-03-18 17:13:32,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bec3bce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:13:32, skipping insertion in model container [2022-03-18 17:13:32,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 05:13:32" (1/1) ... [2022-03-18 17:13:32,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 17:13:32,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 17:13:33,061 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[1551,1564] [2022-03-18 17:13:33,064 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[1758,1771] [2022-03-18 17:13:33,065 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2095,2108] [2022-03-18 17:13:33,066 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2296,2309] [2022-03-18 17:13:33,067 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2701,2714] [2022-03-18 17:13:33,068 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2902,2915] [2022-03-18 17:13:33,070 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3228,3241] [2022-03-18 17:13:33,071 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3435,3448] [2022-03-18 17:13:33,072 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3914,3927] [2022-03-18 17:13:33,073 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4118,4131] [2022-03-18 17:13:33,075 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4426,4439] [2022-03-18 17:13:33,075 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4630,4643] [2022-03-18 17:13:33,077 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4995,5008] [2022-03-18 17:13:33,078 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5198,5211] [2022-03-18 17:13:33,079 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5412,5425] [2022-03-18 17:13:33,091 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5616,5629] [2022-03-18 17:13:33,093 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[6138,6151] [2022-03-18 17:13:33,093 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[6342,6355] [2022-03-18 17:13:33,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 17:13:33,100 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 17:13:33,109 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[1551,1564] [2022-03-18 17:13:33,110 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[1758,1771] [2022-03-18 17:13:33,111 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2095,2108] [2022-03-18 17:13:33,111 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2296,2309] [2022-03-18 17:13:33,112 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2701,2714] [2022-03-18 17:13:33,113 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2902,2915] [2022-03-18 17:13:33,114 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3228,3241] [2022-03-18 17:13:33,115 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3435,3448] [2022-03-18 17:13:33,116 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3914,3927] [2022-03-18 17:13:33,117 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4118,4131] [2022-03-18 17:13:33,118 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4426,4439] [2022-03-18 17:13:33,118 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4630,4643] [2022-03-18 17:13:33,120 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4995,5008] [2022-03-18 17:13:33,120 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5198,5211] [2022-03-18 17:13:33,121 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5412,5425] [2022-03-18 17:13:33,122 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5616,5629] [2022-03-18 17:13:33,123 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[6138,6151] [2022-03-18 17:13:33,124 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[6342,6355] [2022-03-18 17:13:33,125 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 17:13:33,133 INFO L208 MainTranslator]: Completed translation [2022-03-18 17:13:33,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:13:33 WrapperNode [2022-03-18 17:13:33,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 17:13:33,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 17:13:33,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 17:13:33,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 17:13:33,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:13:33" (1/1) ... [2022-03-18 17:13:33,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:13:33" (1/1) ... [2022-03-18 17:13:33,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:13:33" (1/1) ... [2022-03-18 17:13:33,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:13:33" (1/1) ... [2022-03-18 17:13:33,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:13:33" (1/1) ... [2022-03-18 17:13:33,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:13:33" (1/1) ... [2022-03-18 17:13:33,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:13:33" (1/1) ... [2022-03-18 17:13:33,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 17:13:33,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 17:13:33,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 17:13:33,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 17:13:33,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:13:33" (1/1) ... [2022-03-18 17:13:33,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 17:13:33,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 17:13:33,190 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-18 17:13:33,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-18 17:13:33,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 17:13:33,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 17:13:33,213 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 17:13:33,213 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-18 17:13:33,213 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 17:13:33,213 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 17:13:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 17:13:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 17:13:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 17:13:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-18 17:13:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 17:13:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 17:13:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 17:13:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 17:13:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 17:13:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 17:13:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 17:13:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 17:13:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 17:13:33,266 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 17:13:33,267 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 17:13:33,453 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 17:13:33,458 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 17:13:33,458 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-18 17:13:33,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 05:13:33 BoogieIcfgContainer [2022-03-18 17:13:33,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 17:13:33,460 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-18 17:13:33,460 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-18 17:13:33,461 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-18 17:13:33,463 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 05:13:33" (1/1) ... [2022-03-18 17:13:33,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 05:13:33 BasicIcfg [2022-03-18 17:13:33,483 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-18 17:13:33,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 17:13:33,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 17:13:33,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 17:13:33,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 05:13:32" (1/4) ... [2022-03-18 17:13:33,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a1f285f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 05:13:33, skipping insertion in model container [2022-03-18 17:13:33,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:13:33" (2/4) ... [2022-03-18 17:13:33,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a1f285f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 05:13:33, skipping insertion in model container [2022-03-18 17:13:33,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 05:13:33" (3/4) ... [2022-03-18 17:13:33,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a1f285f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 05:13:33, skipping insertion in model container [2022-03-18 17:13:33,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 05:13:33" (4/4) ... [2022-03-18 17:13:33,488 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-escape-absolute.i.v+cfa-reducer.cJordan [2022-03-18 17:13:33,491 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-18 17:13:33,491 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-03-18 17:13:33,518 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 17:13:33,522 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-18 17:13:33,522 INFO L341 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-03-18 17:13:33,531 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 64 states have (on average 1.875) internal successors, (120), 82 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 17:13:33,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-18 17:13:33,535 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:13:33,536 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 17:13:33,536 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-03-18 17:13:33,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:13:33,539 INFO L85 PathProgramCache]: Analyzing trace with hash 317693851, now seen corresponding path program 1 times [2022-03-18 17:13:33,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:13:33,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132505408] [2022-03-18 17:13:33,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:13:33,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:13:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:33,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:13:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:33,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:13:33,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:13:33,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132505408] [2022-03-18 17:13:33,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132505408] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 17:13:33,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 17:13:33,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-18 17:13:33,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891202657] [2022-03-18 17:13:33,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 17:13:33,735 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-18 17:13:33,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:13:33,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-18 17:13:33,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-18 17:13:33,760 INFO L87 Difference]: Start difference. First operand has 87 states, 64 states have (on average 1.875) internal successors, (120), 82 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:33,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:13:33,853 INFO L93 Difference]: Finished difference Result 87 states and 106 transitions. [2022-03-18 17:13:33,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 17:13:33,855 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-03-18 17:13:33,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:13:33,860 INFO L225 Difference]: With dead ends: 87 [2022-03-18 17:13:33,860 INFO L226 Difference]: Without dead ends: 80 [2022-03-18 17:13:33,862 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-18 17:13:33,864 INFO L912 BasicCegarLoop]: 94 mSDtfsCounter, 170 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 17:13:33,864 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 105 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 17:13:33,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-03-18 17:13:33,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-03-18 17:13:33,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 60 states have (on average 1.3333333333333333) internal successors, (80), 76 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:33,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2022-03-18 17:13:33,888 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 19 [2022-03-18 17:13:33,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:13:33,888 INFO L478 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2022-03-18 17:13:33,888 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:33,888 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2022-03-18 17:13:33,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-18 17:13:33,889 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:13:33,889 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 17:13:33,889 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 17:13:33,889 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-03-18 17:13:33,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:13:33,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1258576075, now seen corresponding path program 1 times [2022-03-18 17:13:33,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:13:33,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477851976] [2022-03-18 17:13:33,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:13:33,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:13:33,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:33,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:13:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:33,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:13:33,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:13:33,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477851976] [2022-03-18 17:13:33,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477851976] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 17:13:33,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 17:13:33,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 17:13:33,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720117738] [2022-03-18 17:13:33,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 17:13:33,947 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-18 17:13:33,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:13:33,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-18 17:13:33,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-18 17:13:33,948 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:34,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:13:34,051 INFO L93 Difference]: Finished difference Result 78 states and 81 transitions. [2022-03-18 17:13:34,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 17:13:34,052 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-03-18 17:13:34,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:13:34,053 INFO L225 Difference]: With dead ends: 78 [2022-03-18 17:13:34,053 INFO L226 Difference]: Without dead ends: 78 [2022-03-18 17:13:34,053 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-18 17:13:34,054 INFO L912 BasicCegarLoop]: 57 mSDtfsCounter, 319 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 17:13:34,054 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 74 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 17:13:34,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-03-18 17:13:34,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-03-18 17:13:34,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 59 states have (on average 1.3220338983050848) internal successors, (78), 74 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:34,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2022-03-18 17:13:34,077 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 20 [2022-03-18 17:13:34,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:13:34,077 INFO L478 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2022-03-18 17:13:34,077 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:34,078 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2022-03-18 17:13:34,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-18 17:13:34,078 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:13:34,078 INFO L500 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] [2022-03-18 17:13:34,078 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 17:13:34,079 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-03-18 17:13:34,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:13:34,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1689129137, now seen corresponding path program 1 times [2022-03-18 17:13:34,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:13:34,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500575508] [2022-03-18 17:13:34,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:13:34,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:13:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:34,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:13:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:34,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:13:34,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:13:34,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500575508] [2022-03-18 17:13:34,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500575508] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 17:13:34,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 17:13:34,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 17:13:34,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818126160] [2022-03-18 17:13:34,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 17:13:34,131 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 17:13:34,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:13:34,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 17:13:34,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-18 17:13:34,132 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:34,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:13:34,251 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2022-03-18 17:13:34,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 17:13:34,251 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-03-18 17:13:34,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:13:34,256 INFO L225 Difference]: With dead ends: 99 [2022-03-18 17:13:34,258 INFO L226 Difference]: Without dead ends: 99 [2022-03-18 17:13:34,259 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-18 17:13:34,261 INFO L912 BasicCegarLoop]: 66 mSDtfsCounter, 207 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 17:13:34,266 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 78 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 17:13:34,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-03-18 17:13:34,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 76. [2022-03-18 17:13:34,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 58 states have (on average 1.3103448275862069) internal successors, (76), 72 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:34,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2022-03-18 17:13:34,274 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 22 [2022-03-18 17:13:34,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:13:34,274 INFO L478 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2022-03-18 17:13:34,274 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:34,274 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2022-03-18 17:13:34,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-18 17:13:34,274 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:13:34,275 INFO L500 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] [2022-03-18 17:13:34,275 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-18 17:13:34,275 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-03-18 17:13:34,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:13:34,275 INFO L85 PathProgramCache]: Analyzing trace with hash -823394398, now seen corresponding path program 1 times [2022-03-18 17:13:34,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:13:34,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368883959] [2022-03-18 17:13:34,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:13:34,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:13:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:34,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:13:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:34,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:13:34,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:13:34,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368883959] [2022-03-18 17:13:34,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368883959] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 17:13:34,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 17:13:34,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 17:13:34,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038902720] [2022-03-18 17:13:34,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 17:13:34,353 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 17:13:34,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:13:34,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 17:13:34,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-18 17:13:34,354 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:34,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:13:34,430 INFO L93 Difference]: Finished difference Result 74 states and 77 transitions. [2022-03-18 17:13:34,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 17:13:34,431 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-03-18 17:13:34,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:13:34,431 INFO L225 Difference]: With dead ends: 74 [2022-03-18 17:13:34,431 INFO L226 Difference]: Without dead ends: 74 [2022-03-18 17:13:34,432 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-18 17:13:34,433 INFO L912 BasicCegarLoop]: 53 mSDtfsCounter, 234 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 17:13:34,433 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 70 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 17:13:34,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-03-18 17:13:34,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-03-18 17:13:34,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 57 states have (on average 1.2982456140350878) internal successors, (74), 70 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:34,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2022-03-18 17:13:34,436 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 23 [2022-03-18 17:13:34,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:13:34,436 INFO L478 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2022-03-18 17:13:34,437 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:34,437 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2022-03-18 17:13:34,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-18 17:13:34,437 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:13:34,437 INFO L500 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] [2022-03-18 17:13:34,437 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-18 17:13:34,438 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr16ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-03-18 17:13:34,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:13:34,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1183023144, now seen corresponding path program 1 times [2022-03-18 17:13:34,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:13:34,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488090126] [2022-03-18 17:13:34,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:13:34,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:13:34,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:34,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:13:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:34,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:13:34,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:13:34,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488090126] [2022-03-18 17:13:34,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488090126] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 17:13:34,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 17:13:34,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 17:13:34,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885011237] [2022-03-18 17:13:34,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 17:13:34,538 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 17:13:34,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:13:34,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 17:13:34,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-18 17:13:34,539 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:34,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:13:34,776 INFO L93 Difference]: Finished difference Result 139 states and 145 transitions. [2022-03-18 17:13:34,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 17:13:34,777 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-03-18 17:13:34,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:13:34,778 INFO L225 Difference]: With dead ends: 139 [2022-03-18 17:13:34,778 INFO L226 Difference]: Without dead ends: 139 [2022-03-18 17:13:34,778 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-18 17:13:34,780 INFO L912 BasicCegarLoop]: 108 mSDtfsCounter, 235 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 17:13:34,780 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 125 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 17:13:34,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-03-18 17:13:34,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 77. [2022-03-18 17:13:34,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 60 states have (on average 1.3166666666666667) internal successors, (79), 73 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:34,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2022-03-18 17:13:34,795 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 26 [2022-03-18 17:13:34,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:13:34,795 INFO L478 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2022-03-18 17:13:34,795 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:34,795 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2022-03-18 17:13:34,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-18 17:13:34,796 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:13:34,796 INFO L500 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] [2022-03-18 17:13:34,796 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-18 17:13:34,796 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-03-18 17:13:34,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:13:34,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1182992326, now seen corresponding path program 1 times [2022-03-18 17:13:34,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:13:34,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398919518] [2022-03-18 17:13:34,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:13:34,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:13:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:34,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:13:34,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:34,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:13:34,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:13:34,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398919518] [2022-03-18 17:13:34,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398919518] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 17:13:34,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 17:13:34,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 17:13:34,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401312713] [2022-03-18 17:13:34,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 17:13:34,882 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 17:13:34,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:13:34,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 17:13:34,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-18 17:13:34,884 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:35,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:13:35,043 INFO L93 Difference]: Finished difference Result 106 states and 111 transitions. [2022-03-18 17:13:35,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 17:13:35,043 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-03-18 17:13:35,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:13:35,044 INFO L225 Difference]: With dead ends: 106 [2022-03-18 17:13:35,044 INFO L226 Difference]: Without dead ends: 106 [2022-03-18 17:13:35,044 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-18 17:13:35,045 INFO L912 BasicCegarLoop]: 64 mSDtfsCounter, 220 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 17:13:35,045 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 81 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 17:13:35,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-03-18 17:13:35,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 79. [2022-03-18 17:13:35,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 62 states have (on average 1.3064516129032258) internal successors, (81), 75 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:35,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2022-03-18 17:13:35,047 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 26 [2022-03-18 17:13:35,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:13:35,048 INFO L478 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2022-03-18 17:13:35,048 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:35,048 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2022-03-18 17:13:35,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-18 17:13:35,048 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:13:35,048 INFO L500 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] [2022-03-18 17:13:35,048 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-18 17:13:35,048 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr17ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-03-18 17:13:35,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:13:35,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1980989516, now seen corresponding path program 1 times [2022-03-18 17:13:35,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:13:35,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350896418] [2022-03-18 17:13:35,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:13:35,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:13:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:35,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:13:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:35,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:13:35,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:13:35,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350896418] [2022-03-18 17:13:35,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350896418] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 17:13:35,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 17:13:35,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 17:13:35,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276813492] [2022-03-18 17:13:35,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 17:13:35,094 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 17:13:35,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:13:35,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 17:13:35,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-18 17:13:35,094 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:35,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:13:35,218 INFO L93 Difference]: Finished difference Result 119 states and 125 transitions. [2022-03-18 17:13:35,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 17:13:35,219 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-03-18 17:13:35,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:13:35,220 INFO L225 Difference]: With dead ends: 119 [2022-03-18 17:13:35,220 INFO L226 Difference]: Without dead ends: 119 [2022-03-18 17:13:35,220 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-18 17:13:35,221 INFO L912 BasicCegarLoop]: 87 mSDtfsCounter, 215 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 17:13:35,221 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 104 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 17:13:35,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-03-18 17:13:35,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 77. [2022-03-18 17:13:35,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 61 states have (on average 1.2950819672131149) internal successors, (79), 73 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:35,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2022-03-18 17:13:35,234 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 27 [2022-03-18 17:13:35,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:13:35,234 INFO L478 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2022-03-18 17:13:35,234 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:35,234 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2022-03-18 17:13:35,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-18 17:13:35,235 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:13:35,235 INFO L500 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] [2022-03-18 17:13:35,235 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-18 17:13:35,235 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-03-18 17:13:35,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:13:35,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1981944876, now seen corresponding path program 1 times [2022-03-18 17:13:35,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:13:35,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339307036] [2022-03-18 17:13:35,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:13:35,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:13:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:35,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:13:35,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:35,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:13:35,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:13:35,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339307036] [2022-03-18 17:13:35,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339307036] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 17:13:35,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 17:13:35,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 17:13:35,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172827148] [2022-03-18 17:13:35,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 17:13:35,297 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 17:13:35,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:13:35,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 17:13:35,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-18 17:13:35,298 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:35,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:13:35,386 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2022-03-18 17:13:35,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 17:13:35,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-03-18 17:13:35,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:13:35,387 INFO L225 Difference]: With dead ends: 75 [2022-03-18 17:13:35,387 INFO L226 Difference]: Without dead ends: 75 [2022-03-18 17:13:35,388 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-18 17:13:35,388 INFO L912 BasicCegarLoop]: 53 mSDtfsCounter, 197 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 17:13:35,388 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 70 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 17:13:35,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-03-18 17:13:35,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-03-18 17:13:35,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 60 states have (on average 1.2833333333333334) internal successors, (77), 71 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:35,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2022-03-18 17:13:35,392 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 27 [2022-03-18 17:13:35,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:13:35,392 INFO L478 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2022-03-18 17:13:35,392 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:35,393 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2022-03-18 17:13:35,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-18 17:13:35,396 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:13:35,396 INFO L500 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] [2022-03-18 17:13:35,396 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-18 17:13:35,396 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-03-18 17:13:35,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:13:35,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1978555952, now seen corresponding path program 1 times [2022-03-18 17:13:35,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:13:35,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533808133] [2022-03-18 17:13:35,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:13:35,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:13:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:35,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:13:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:35,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:13:35,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:13:35,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533808133] [2022-03-18 17:13:35,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533808133] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 17:13:35,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 17:13:35,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-18 17:13:35,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325268932] [2022-03-18 17:13:35,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 17:13:35,441 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-18 17:13:35,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:13:35,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-18 17:13:35,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-18 17:13:35,441 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:35,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:13:35,516 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2022-03-18 17:13:35,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-18 17:13:35,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-03-18 17:13:35,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:13:35,517 INFO L225 Difference]: With dead ends: 79 [2022-03-18 17:13:35,518 INFO L226 Difference]: Without dead ends: 75 [2022-03-18 17:13:35,518 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-18 17:13:35,519 INFO L912 BasicCegarLoop]: 71 mSDtfsCounter, 71 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 17:13:35,519 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 78 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 17:13:35,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-03-18 17:13:35,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-03-18 17:13:35,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 60 states have (on average 1.25) internal successors, (75), 71 states have internal predecessors, (75), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:35,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2022-03-18 17:13:35,521 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 29 [2022-03-18 17:13:35,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:13:35,521 INFO L478 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2022-03-18 17:13:35,521 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:35,521 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2022-03-18 17:13:35,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-18 17:13:35,522 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:13:35,523 INFO L500 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] [2022-03-18 17:13:35,523 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-18 17:13:35,523 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-03-18 17:13:35,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:13:35,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1860757727, now seen corresponding path program 1 times [2022-03-18 17:13:35,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:13:35,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147692448] [2022-03-18 17:13:35,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:13:35,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:13:35,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:35,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:13:35,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:35,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:13:35,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:13:35,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147692448] [2022-03-18 17:13:35,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147692448] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 17:13:35,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 17:13:35,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 17:13:35,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619157872] [2022-03-18 17:13:35,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 17:13:35,585 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 17:13:35,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:13:35,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 17:13:35,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-03-18 17:13:35,586 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:35,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:13:35,660 INFO L93 Difference]: Finished difference Result 74 states and 77 transitions. [2022-03-18 17:13:35,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 17:13:35,660 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-03-18 17:13:35,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:13:35,662 INFO L225 Difference]: With dead ends: 74 [2022-03-18 17:13:35,662 INFO L226 Difference]: Without dead ends: 74 [2022-03-18 17:13:35,662 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-03-18 17:13:35,662 INFO L912 BasicCegarLoop]: 50 mSDtfsCounter, 183 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 17:13:35,663 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 62 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 17:13:35,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-03-18 17:13:35,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2022-03-18 17:13:35,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 59 states have (on average 1.2372881355932204) internal successors, (73), 69 states have internal predecessors, (73), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:35,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2022-03-18 17:13:35,665 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 30 [2022-03-18 17:13:35,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:13:35,665 INFO L478 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2022-03-18 17:13:35,665 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:35,665 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2022-03-18 17:13:35,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-18 17:13:35,667 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:13:35,667 INFO L500 BasicCegarLoop]: trace histogram [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] [2022-03-18 17:13:35,667 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-18 17:13:35,667 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr16ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-03-18 17:13:35,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:13:35,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1486248991, now seen corresponding path program 1 times [2022-03-18 17:13:35,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:13:35,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121559292] [2022-03-18 17:13:35,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:13:35,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:13:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:35,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:13:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:35,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 17:13:35,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:13:35,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121559292] [2022-03-18 17:13:35,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121559292] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 17:13:35,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801331311] [2022-03-18 17:13:35,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:13:35,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 17:13:35,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 17:13:35,724 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 17:13:35,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 17:13:35,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:35,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-18 17:13:35,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 17:13:35,897 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 17:13:35,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 17:13:35,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 17:13:35,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801331311] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 17:13:35,965 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 17:13:35,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2022-03-18 17:13:35,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418303305] [2022-03-18 17:13:35,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 17:13:35,966 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-18 17:13:35,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:13:35,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-18 17:13:35,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-18 17:13:35,966 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:36,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:13:36,103 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2022-03-18 17:13:36,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 17:13:36,103 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-03-18 17:13:36,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:13:36,104 INFO L225 Difference]: With dead ends: 109 [2022-03-18 17:13:36,104 INFO L226 Difference]: Without dead ends: 109 [2022-03-18 17:13:36,104 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 57 SyntacticMatches, 5 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-18 17:13:36,105 INFO L912 BasicCegarLoop]: 75 mSDtfsCounter, 230 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 17:13:36,105 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 87 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 17:13:36,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-03-18 17:13:36,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 70. [2022-03-18 17:13:36,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 57 states have (on average 1.2280701754385965) internal successors, (70), 66 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:36,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2022-03-18 17:13:36,107 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 30 [2022-03-18 17:13:36,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:13:36,107 INFO L478 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2022-03-18 17:13:36,107 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:36,107 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2022-03-18 17:13:36,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-18 17:13:36,107 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:13:36,107 INFO L500 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] [2022-03-18 17:13:36,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-18 17:13:36,315 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-03-18 17:13:36,315 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr7ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-03-18 17:13:36,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:13:36,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1848916017, now seen corresponding path program 1 times [2022-03-18 17:13:36,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:13:36,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527214443] [2022-03-18 17:13:36,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:13:36,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:13:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:36,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:13:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:36,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:13:36,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:13:36,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527214443] [2022-03-18 17:13:36,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527214443] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 17:13:36,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 17:13:36,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 17:13:36,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308651050] [2022-03-18 17:13:36,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 17:13:36,356 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 17:13:36,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:13:36,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 17:13:36,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-18 17:13:36,357 INFO L87 Difference]: Start difference. First operand 70 states and 73 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:36,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:13:36,424 INFO L93 Difference]: Finished difference Result 68 states and 71 transitions. [2022-03-18 17:13:36,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 17:13:36,425 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2022-03-18 17:13:36,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:13:36,425 INFO L225 Difference]: With dead ends: 68 [2022-03-18 17:13:36,425 INFO L226 Difference]: Without dead ends: 68 [2022-03-18 17:13:36,425 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-18 17:13:36,426 INFO L912 BasicCegarLoop]: 43 mSDtfsCounter, 170 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 17:13:36,427 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 60 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 17:13:36,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-03-18 17:13:36,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2022-03-18 17:13:36,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 56 states have (on average 1.2142857142857142) internal successors, (68), 64 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:36,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2022-03-18 17:13:36,428 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 31 [2022-03-18 17:13:36,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:13:36,429 INFO L478 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2022-03-18 17:13:36,429 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:36,429 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2022-03-18 17:13:36,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-18 17:13:36,430 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:13:36,430 INFO L500 BasicCegarLoop]: trace histogram [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] [2022-03-18 17:13:36,430 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-18 17:13:36,430 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-03-18 17:13:36,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:13:36,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1170891010, now seen corresponding path program 1 times [2022-03-18 17:13:36,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:13:36,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765480133] [2022-03-18 17:13:36,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:13:36,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:13:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:36,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:13:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:36,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 17:13:36,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:13:36,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765480133] [2022-03-18 17:13:36,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765480133] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 17:13:36,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357214652] [2022-03-18 17:13:36,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:13:36,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 17:13:36,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 17:13:36,482 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 17:13:36,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-18 17:13:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:36,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-18 17:13:36,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 17:13:36,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 17:13:36,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 17:13:36,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 17:13:36,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357214652] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 17:13:36,637 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 17:13:36,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2022-03-18 17:13:36,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687075484] [2022-03-18 17:13:36,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 17:13:36,638 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-18 17:13:36,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:13:36,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-18 17:13:36,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-18 17:13:36,638 INFO L87 Difference]: Start difference. First operand 68 states and 71 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:36,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:13:36,699 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2022-03-18 17:13:36,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 17:13:36,700 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2022-03-18 17:13:36,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:13:36,700 INFO L225 Difference]: With dead ends: 67 [2022-03-18 17:13:36,700 INFO L226 Difference]: Without dead ends: 67 [2022-03-18 17:13:36,700 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-18 17:13:36,701 INFO L912 BasicCegarLoop]: 44 mSDtfsCounter, 201 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 17:13:36,701 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 56 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 17:13:36,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-03-18 17:13:36,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 62. [2022-03-18 17:13:36,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 51 states have (on average 1.196078431372549) internal successors, (61), 58 states have internal predecessors, (61), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:36,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2022-03-18 17:13:36,702 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 31 [2022-03-18 17:13:36,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:13:36,702 INFO L478 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2022-03-18 17:13:36,702 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:36,703 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2022-03-18 17:13:36,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-18 17:13:36,703 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:13:36,703 INFO L500 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] [2022-03-18 17:13:36,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-18 17:13:36,915 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-18 17:13:36,916 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-03-18 17:13:36,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:13:36,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1897188956, now seen corresponding path program 1 times [2022-03-18 17:13:36,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:13:36,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471985545] [2022-03-18 17:13:36,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:13:36,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:13:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:36,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:13:36,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:36,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:13:36,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:13:36,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471985545] [2022-03-18 17:13:36,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471985545] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 17:13:36,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 17:13:36,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 17:13:36,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262995540] [2022-03-18 17:13:36,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 17:13:36,955 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 17:13:36,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:13:36,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 17:13:36,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-03-18 17:13:36,956 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:37,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:13:37,019 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2022-03-18 17:13:37,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 17:13:37,019 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2022-03-18 17:13:37,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:13:37,020 INFO L225 Difference]: With dead ends: 61 [2022-03-18 17:13:37,020 INFO L226 Difference]: Without dead ends: 61 [2022-03-18 17:13:37,020 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-03-18 17:13:37,020 INFO L912 BasicCegarLoop]: 42 mSDtfsCounter, 149 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 17:13:37,020 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 54 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 17:13:37,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-03-18 17:13:37,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2022-03-18 17:13:37,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 50 states have (on average 1.18) internal successors, (59), 56 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:37,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2022-03-18 17:13:37,022 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 34 [2022-03-18 17:13:37,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:13:37,022 INFO L478 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2022-03-18 17:13:37,022 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:37,022 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2022-03-18 17:13:37,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-18 17:13:37,022 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:13:37,022 INFO L500 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] [2022-03-18 17:13:37,023 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-18 17:13:37,023 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-03-18 17:13:37,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:13:37,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1316685848, now seen corresponding path program 1 times [2022-03-18 17:13:37,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:13:37,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360926997] [2022-03-18 17:13:37,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:13:37,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:13:37,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:37,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:13:37,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:37,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:13:37,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:13:37,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360926997] [2022-03-18 17:13:37,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360926997] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 17:13:37,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 17:13:37,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 17:13:37,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936060585] [2022-03-18 17:13:37,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 17:13:37,080 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-18 17:13:37,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:13:37,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-18 17:13:37,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-18 17:13:37,080 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:37,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:13:37,184 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2022-03-18 17:13:37,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 17:13:37,184 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-03-18 17:13:37,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:13:37,185 INFO L225 Difference]: With dead ends: 69 [2022-03-18 17:13:37,185 INFO L226 Difference]: Without dead ends: 69 [2022-03-18 17:13:37,186 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-18 17:13:37,187 INFO L912 BasicCegarLoop]: 40 mSDtfsCounter, 153 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 17:13:37,187 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 62 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 17:13:37,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-03-18 17:13:37,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 58. [2022-03-18 17:13:37,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 49 states have (on average 1.163265306122449) internal successors, (57), 54 states have internal predecessors, (57), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:37,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2022-03-18 17:13:37,189 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 35 [2022-03-18 17:13:37,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:13:37,189 INFO L478 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2022-03-18 17:13:37,189 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:37,189 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2022-03-18 17:13:37,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-18 17:13:37,190 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:13:37,190 INFO L500 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] [2022-03-18 17:13:37,190 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-18 17:13:37,190 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-03-18 17:13:37,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:13:37,190 INFO L85 PathProgramCache]: Analyzing trace with hash -546914678, now seen corresponding path program 1 times [2022-03-18 17:13:37,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:13:37,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040406948] [2022-03-18 17:13:37,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:13:37,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:13:37,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:37,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:13:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:37,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:13:37,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:13:37,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040406948] [2022-03-18 17:13:37,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040406948] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 17:13:37,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 17:13:37,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 17:13:37,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018324452] [2022-03-18 17:13:37,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 17:13:37,241 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 17:13:37,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:13:37,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 17:13:37,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-18 17:13:37,242 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:37,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:13:37,388 INFO L93 Difference]: Finished difference Result 89 states and 93 transitions. [2022-03-18 17:13:37,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 17:13:37,388 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2022-03-18 17:13:37,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:13:37,389 INFO L225 Difference]: With dead ends: 89 [2022-03-18 17:13:37,389 INFO L226 Difference]: Without dead ends: 89 [2022-03-18 17:13:37,389 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-03-18 17:13:37,389 INFO L912 BasicCegarLoop]: 43 mSDtfsCounter, 178 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 17:13:37,389 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 60 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 17:13:37,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-03-18 17:13:37,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 61. [2022-03-18 17:13:37,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 52 states have (on average 1.1538461538461537) internal successors, (60), 57 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:37,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2022-03-18 17:13:37,391 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 38 [2022-03-18 17:13:37,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:13:37,391 INFO L478 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2022-03-18 17:13:37,391 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:37,391 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2022-03-18 17:13:37,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-18 17:13:37,392 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:13:37,392 INFO L500 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] [2022-03-18 17:13:37,392 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-18 17:13:37,392 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr11ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-03-18 17:13:37,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:13:37,392 INFO L85 PathProgramCache]: Analyzing trace with hash 225515518, now seen corresponding path program 1 times [2022-03-18 17:13:37,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:13:37,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576608148] [2022-03-18 17:13:37,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:13:37,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:13:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:37,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:13:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:37,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:13:37,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:13:37,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576608148] [2022-03-18 17:13:37,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576608148] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 17:13:37,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 17:13:37,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 17:13:37,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539338545] [2022-03-18 17:13:37,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 17:13:37,449 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 17:13:37,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:13:37,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 17:13:37,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-18 17:13:37,450 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:37,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:13:37,539 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2022-03-18 17:13:37,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 17:13:37,539 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2022-03-18 17:13:37,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:13:37,540 INFO L225 Difference]: With dead ends: 59 [2022-03-18 17:13:37,540 INFO L226 Difference]: Without dead ends: 59 [2022-03-18 17:13:37,540 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-18 17:13:37,540 INFO L912 BasicCegarLoop]: 50 mSDtfsCounter, 110 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 17:13:37,541 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 67 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 17:13:37,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-03-18 17:13:37,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-03-18 17:13:37,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 51 states have (on average 1.1372549019607843) internal successors, (58), 55 states have internal predecessors, (58), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:37,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2022-03-18 17:13:37,542 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 39 [2022-03-18 17:13:37,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:13:37,542 INFO L478 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2022-03-18 17:13:37,542 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:37,542 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2022-03-18 17:13:37,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-03-18 17:13:37,543 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:13:37,543 INFO L500 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] [2022-03-18 17:13:37,543 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-18 17:13:37,543 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr12ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-03-18 17:13:37,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:13:37,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1972090370, now seen corresponding path program 1 times [2022-03-18 17:13:37,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:13:37,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460486480] [2022-03-18 17:13:37,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:13:37,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:13:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:37,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:13:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:37,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:13:37,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:13:37,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460486480] [2022-03-18 17:13:37,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460486480] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 17:13:37,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 17:13:37,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 17:13:37,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061680362] [2022-03-18 17:13:37,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 17:13:37,569 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 17:13:37,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:13:37,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 17:13:37,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-18 17:13:37,570 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:37,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:13:37,641 INFO L93 Difference]: Finished difference Result 68 states and 71 transitions. [2022-03-18 17:13:37,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 17:13:37,641 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2022-03-18 17:13:37,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:13:37,641 INFO L225 Difference]: With dead ends: 68 [2022-03-18 17:13:37,641 INFO L226 Difference]: Without dead ends: 68 [2022-03-18 17:13:37,642 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-18 17:13:37,642 INFO L912 BasicCegarLoop]: 65 mSDtfsCounter, 74 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 17:13:37,642 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 77 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 17:13:37,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-03-18 17:13:37,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 57. [2022-03-18 17:13:37,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 50 states have (on average 1.12) internal successors, (56), 53 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:37,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2022-03-18 17:13:37,644 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 41 [2022-03-18 17:13:37,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:13:37,644 INFO L478 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2022-03-18 17:13:37,644 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:37,644 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2022-03-18 17:13:37,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-18 17:13:37,644 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:13:37,644 INFO L500 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] [2022-03-18 17:13:37,644 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-18 17:13:37,644 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr13ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-03-18 17:13:37,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:13:37,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1005260689, now seen corresponding path program 1 times [2022-03-18 17:13:37,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:13:37,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941599580] [2022-03-18 17:13:37,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:13:37,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:13:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:37,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:13:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:37,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:13:37,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:13:37,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941599580] [2022-03-18 17:13:37,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941599580] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 17:13:37,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 17:13:37,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 17:13:37,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018263828] [2022-03-18 17:13:37,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 17:13:37,674 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 17:13:37,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:13:37,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 17:13:37,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-18 17:13:37,674 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:37,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:13:37,755 INFO L93 Difference]: Finished difference Result 64 states and 67 transitions. [2022-03-18 17:13:37,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 17:13:37,756 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2022-03-18 17:13:37,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:13:37,756 INFO L225 Difference]: With dead ends: 64 [2022-03-18 17:13:37,756 INFO L226 Difference]: Without dead ends: 64 [2022-03-18 17:13:37,756 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-03-18 17:13:37,757 INFO L912 BasicCegarLoop]: 57 mSDtfsCounter, 91 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 17:13:37,757 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 74 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 17:13:37,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-03-18 17:13:37,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 55. [2022-03-18 17:13:37,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 51 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:37,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2022-03-18 17:13:37,758 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 42 [2022-03-18 17:13:37,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:13:37,758 INFO L478 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2022-03-18 17:13:37,758 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:37,758 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2022-03-18 17:13:37,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-18 17:13:37,759 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:13:37,759 INFO L500 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] [2022-03-18 17:13:37,759 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-18 17:13:37,759 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-03-18 17:13:37,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:13:37,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1098311654, now seen corresponding path program 1 times [2022-03-18 17:13:37,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:13:37,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091822968] [2022-03-18 17:13:37,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:13:37,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:13:37,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:37,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:13:37,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:37,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:13:37,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:13:37,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091822968] [2022-03-18 17:13:37,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091822968] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 17:13:37,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 17:13:37,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 17:13:37,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923724837] [2022-03-18 17:13:37,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 17:13:37,797 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 17:13:37,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:13:37,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 17:13:37,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-18 17:13:37,798 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:37,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:13:37,943 INFO L93 Difference]: Finished difference Result 86 states and 91 transitions. [2022-03-18 17:13:37,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 17:13:37,944 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2022-03-18 17:13:37,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:13:37,944 INFO L225 Difference]: With dead ends: 86 [2022-03-18 17:13:37,944 INFO L226 Difference]: Without dead ends: 86 [2022-03-18 17:13:37,944 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-03-18 17:13:37,945 INFO L912 BasicCegarLoop]: 45 mSDtfsCounter, 123 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 17:13:37,945 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 62 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 17:13:37,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-03-18 17:13:37,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 60. [2022-03-18 17:13:37,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 56 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:37,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2022-03-18 17:13:37,946 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 43 [2022-03-18 17:13:37,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:13:37,947 INFO L478 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2022-03-18 17:13:37,947 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:37,947 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2022-03-18 17:13:37,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-03-18 17:13:37,947 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:13:37,947 INFO L500 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] [2022-03-18 17:13:37,947 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-18 17:13:37,947 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-03-18 17:13:37,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:13:37,948 INFO L85 PathProgramCache]: Analyzing trace with hash -312075723, now seen corresponding path program 1 times [2022-03-18 17:13:37,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:13:37,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308555080] [2022-03-18 17:13:37,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:13:37,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:13:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:37,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:13:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:37,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:13:37,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:13:37,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308555080] [2022-03-18 17:13:37,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308555080] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 17:13:37,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 17:13:37,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 17:13:37,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597575008] [2022-03-18 17:13:37,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 17:13:37,986 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 17:13:37,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:13:37,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 17:13:37,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-18 17:13:37,986 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:38,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:13:38,099 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2022-03-18 17:13:38,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 17:13:38,099 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-03-18 17:13:38,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:13:38,099 INFO L225 Difference]: With dead ends: 71 [2022-03-18 17:13:38,099 INFO L226 Difference]: Without dead ends: 71 [2022-03-18 17:13:38,100 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-18 17:13:38,100 INFO L912 BasicCegarLoop]: 52 mSDtfsCounter, 81 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 17:13:38,100 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 69 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 17:13:38,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-03-18 17:13:38,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 58. [2022-03-18 17:13:38,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 54 states have internal predecessors, (58), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:38,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2022-03-18 17:13:38,102 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 44 [2022-03-18 17:13:38,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:13:38,102 INFO L478 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2022-03-18 17:13:38,102 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:38,102 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2022-03-18 17:13:38,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-03-18 17:13:38,103 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:13:38,103 INFO L500 BasicCegarLoop]: trace histogram [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] [2022-03-18 17:13:38,103 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-18 17:13:38,103 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-03-18 17:13:38,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:13:38,103 INFO L85 PathProgramCache]: Analyzing trace with hash -283140749, now seen corresponding path program 1 times [2022-03-18 17:13:38,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:13:38,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931258672] [2022-03-18 17:13:38,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:13:38,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:13:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:38,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:13:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:38,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:13:38,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:13:38,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931258672] [2022-03-18 17:13:38,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931258672] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 17:13:38,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181710474] [2022-03-18 17:13:38,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:13:38,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 17:13:38,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 17:13:38,151 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 17:13:38,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-18 17:13:38,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:38,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-18 17:13:38,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 17:13:38,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:13:38,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 17:13:38,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 17:13:38,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181710474] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 17:13:38,339 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 17:13:38,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2022-03-18 17:13:38,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527652328] [2022-03-18 17:13:38,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 17:13:38,339 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-18 17:13:38,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:13:38,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-18 17:13:38,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-18 17:13:38,340 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:38,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:13:38,409 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2022-03-18 17:13:38,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 17:13:38,411 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-03-18 17:13:38,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:13:38,411 INFO L225 Difference]: With dead ends: 56 [2022-03-18 17:13:38,411 INFO L226 Difference]: Without dead ends: 56 [2022-03-18 17:13:38,411 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 84 SyntacticMatches, 7 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-18 17:13:38,412 INFO L912 BasicCegarLoop]: 30 mSDtfsCounter, 89 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 17:13:38,412 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 47 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 17:13:38,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-03-18 17:13:38,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-03-18 17:13:38,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 52 states have (on average 1.0769230769230769) internal successors, (56), 52 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:38,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2022-03-18 17:13:38,413 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 44 [2022-03-18 17:13:38,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:13:38,413 INFO L478 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2022-03-18 17:13:38,413 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:38,413 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2022-03-18 17:13:38,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-03-18 17:13:38,414 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 17:13:38,414 INFO L500 BasicCegarLoop]: trace histogram [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] [2022-03-18 17:13:38,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-18 17:13:38,626 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 17:13:38,627 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2022-03-18 17:13:38,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 17:13:38,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1506676067, now seen corresponding path program 1 times [2022-03-18 17:13:38,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 17:13:38,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431922094] [2022-03-18 17:13:38,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 17:13:38,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 17:13:38,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:38,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 17:13:38,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 17:13:38,664 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-18 17:13:38,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 17:13:38,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431922094] [2022-03-18 17:13:38,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431922094] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 17:13:38,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 17:13:38,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 17:13:38,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618330872] [2022-03-18 17:13:38,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 17:13:38,665 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 17:13:38,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 17:13:38,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 17:13:38,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-18 17:13:38,666 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:38,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 17:13:38,797 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2022-03-18 17:13:38,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 17:13:38,798 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2022-03-18 17:13:38,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 17:13:38,798 INFO L225 Difference]: With dead ends: 73 [2022-03-18 17:13:38,798 INFO L226 Difference]: Without dead ends: 0 [2022-03-18 17:13:38,798 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-03-18 17:13:38,799 INFO L912 BasicCegarLoop]: 38 mSDtfsCounter, 88 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 17:13:38,799 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 55 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 17:13:38,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-18 17:13:38,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-18 17:13:38,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-18 17:13:38,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-18 17:13:38,799 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2022-03-18 17:13:38,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 17:13:38,799 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-18 17:13:38,800 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 17:13:38,800 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-18 17:13:38,800 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-18 17:13:38,801 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (17 of 18 remaining) [2022-03-18 17:13:38,802 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr1ASSERT_VIOLATIONERROR_FUNCTION (16 of 18 remaining) [2022-03-18 17:13:38,802 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr2ASSERT_VIOLATIONERROR_FUNCTION (15 of 18 remaining) [2022-03-18 17:13:38,802 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr3ASSERT_VIOLATIONERROR_FUNCTION (14 of 18 remaining) [2022-03-18 17:13:38,802 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr16ASSERT_VIOLATIONERROR_FUNCTION (13 of 18 remaining) [2022-03-18 17:13:38,802 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr4ASSERT_VIOLATIONERROR_FUNCTION (12 of 18 remaining) [2022-03-18 17:13:38,802 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr17ASSERT_VIOLATIONERROR_FUNCTION (11 of 18 remaining) [2022-03-18 17:13:38,802 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr5ASSERT_VIOLATIONERROR_FUNCTION (10 of 18 remaining) [2022-03-18 17:13:38,802 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr6ASSERT_VIOLATIONERROR_FUNCTION (9 of 18 remaining) [2022-03-18 17:13:38,802 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr7ASSERT_VIOLATIONERROR_FUNCTION (8 of 18 remaining) [2022-03-18 17:13:38,802 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr8ASSERT_VIOLATIONERROR_FUNCTION (7 of 18 remaining) [2022-03-18 17:13:38,802 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr9ASSERT_VIOLATIONERROR_FUNCTION (6 of 18 remaining) [2022-03-18 17:13:38,803 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr10ASSERT_VIOLATIONERROR_FUNCTION (5 of 18 remaining) [2022-03-18 17:13:38,803 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr11ASSERT_VIOLATIONERROR_FUNCTION (4 of 18 remaining) [2022-03-18 17:13:38,803 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr12ASSERT_VIOLATIONERROR_FUNCTION (3 of 18 remaining) [2022-03-18 17:13:38,803 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr13ASSERT_VIOLATIONERROR_FUNCTION (2 of 18 remaining) [2022-03-18 17:13:38,803 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr14ASSERT_VIOLATIONERROR_FUNCTION (1 of 18 remaining) [2022-03-18 17:13:38,803 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr15ASSERT_VIOLATIONERROR_FUNCTION (0 of 18 remaining) [2022-03-18 17:13:38,803 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-18 17:13:38,805 INFO L718 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 17:13:38,806 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 17:13:38,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 05:13:38 BasicIcfg [2022-03-18 17:13:38,808 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 17:13:38,808 INFO L158 Benchmark]: Toolchain (without parser) took 5884.99ms. Allocated memory was 190.8MB in the beginning and 229.6MB in the end (delta: 38.8MB). Free memory was 140.8MB in the beginning and 133.5MB in the end (delta: 7.3MB). Peak memory consumption was 46.9MB. Max. memory is 8.0GB. [2022-03-18 17:13:38,808 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 190.8MB. Free memory was 156.9MB in the beginning and 156.8MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 17:13:38,808 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.47ms. Allocated memory is still 190.8MB. Free memory was 140.7MB in the beginning and 158.5MB in the end (delta: -17.9MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-03-18 17:13:38,808 INFO L158 Benchmark]: Boogie Preprocessor took 21.32ms. Allocated memory is still 190.8MB. Free memory was 158.5MB in the beginning and 157.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-18 17:13:38,809 INFO L158 Benchmark]: RCFGBuilder took 303.77ms. Allocated memory is still 190.8MB. Free memory was 156.5MB in the beginning and 141.2MB in the end (delta: 15.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-03-18 17:13:38,809 INFO L158 Benchmark]: IcfgTransformer took 23.31ms. Allocated memory is still 190.8MB. Free memory was 141.2MB in the beginning and 139.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-18 17:13:38,809 INFO L158 Benchmark]: TraceAbstraction took 5323.59ms. Allocated memory was 190.8MB in the beginning and 229.6MB in the end (delta: 38.8MB). Free memory was 138.7MB in the beginning and 133.5MB in the end (delta: 5.2MB). Peak memory consumption was 44.9MB. Max. memory is 8.0GB. [2022-03-18 17:13:38,810 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 190.8MB. Free memory was 156.9MB in the beginning and 156.8MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 209.47ms. Allocated memory is still 190.8MB. Free memory was 140.7MB in the beginning and 158.5MB in the end (delta: -17.9MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.32ms. Allocated memory is still 190.8MB. Free memory was 158.5MB in the beginning and 157.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 303.77ms. Allocated memory is still 190.8MB. Free memory was 156.5MB in the beginning and 141.2MB in the end (delta: 15.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * IcfgTransformer took 23.31ms. Allocated memory is still 190.8MB. Free memory was 141.2MB in the beginning and 139.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 5323.59ms. Allocated memory was 190.8MB in the beginning and 229.6MB in the end (delta: 38.8MB). Free memory was 138.7MB in the beginning and 133.5MB in the end (delta: 5.2MB). Peak memory consumption was 44.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 85]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 97]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 113]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 125]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 374]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 145]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 386]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 157]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 177]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 189]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 214]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 226]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 243]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 255]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 272]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 284]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 296]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 308]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 87 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 5.3s, OverallIterations: 23, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3788 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3788 mSDsluCounter, 1677 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 350 mSDsCounter, 195 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2507 IncrementalHoareTripleChecker+Invalid, 2702 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 195 mSolverCounterUnsat, 1327 mSDtfsCounter, 2507 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 461 GetRequests, 269 SyntacticMatches, 18 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=0, InterpolantAutomatonStates: 153, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 23 MinimizatonAttempts, 298 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 855 NumberOfCodeBlocks, 855 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 931 ConstructedInterpolants, 0 QuantifiedInterpolants, 2199 SizeOfPredicates, 12 NumberOfNonLiveVariables, 452 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 29 InterpolantComputations, 20 PerfectInterpolantSequences, 11/29 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-03-18 17:13:38,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...