./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/strreplace-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/strreplace-alloca-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 50bdaf600d03af0a677a59daf6a875dbe69c10b2 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 03:27:58,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 03:27:58,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 03:27:58,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 03:27:58,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 03:27:58,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 03:27:58,989 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 03:27:58,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 03:27:58,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 03:27:59,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 03:27:59,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 03:27:59,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 03:27:59,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 03:27:59,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 03:27:59,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 03:27:59,012 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 03:27:59,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 03:27:59,014 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 03:27:59,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 03:27:59,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 03:27:59,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 03:27:59,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 03:27:59,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 03:27:59,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 03:27:59,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 03:27:59,027 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 03:27:59,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 03:27:59,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 03:27:59,029 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 03:27:59,030 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 03:27:59,030 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 03:27:59,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 03:27:59,032 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 03:27:59,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 03:27:59,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 03:27:59,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 03:27:59,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 03:27:59,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 03:27:59,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 03:27:59,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 03:27:59,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 03:27:59,041 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-26 03:27:59,076 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 03:27:59,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 03:27:59,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 03:27:59,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 03:27:59,078 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 03:27:59,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 03:27:59,079 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 03:27:59,079 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 03:27:59,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 03:27:59,080 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 03:27:59,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 03:27:59,080 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-26 03:27:59,080 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-26 03:27:59,081 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-26 03:27:59,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 03:27:59,081 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-26 03:27:59,081 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 03:27:59,081 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 03:27:59,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 03:27:59,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 03:27:59,082 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 03:27:59,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 03:27:59,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:27:59,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 03:27:59,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 03:27:59,083 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 03:27:59,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 03:27:59,084 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 03:27:59,084 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50bdaf600d03af0a677a59daf6a875dbe69c10b2 [2020-10-26 03:27:59,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 03:27:59,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 03:27:59,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 03:27:59,560 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 03:27:59,561 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 03:27:59,562 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/strreplace-alloca-2.i [2020-10-26 03:27:59,669 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d18206b5c/487d011b470e4c008cd1cd8ca94218a8/FLAGbec7dfdbf [2020-10-26 03:28:00,314 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 03:28:00,315 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/strreplace-alloca-2.i [2020-10-26 03:28:00,329 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d18206b5c/487d011b470e4c008cd1cd8ca94218a8/FLAGbec7dfdbf [2020-10-26 03:28:00,672 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d18206b5c/487d011b470e4c008cd1cd8ca94218a8 [2020-10-26 03:28:00,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 03:28:00,684 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-26 03:28:00,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 03:28:00,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 03:28:00,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 03:28:00,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:28:00" (1/1) ... [2020-10-26 03:28:00,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a566d8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:28:00, skipping insertion in model container [2020-10-26 03:28:00,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:28:00" (1/1) ... [2020-10-26 03:28:00,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 03:28:00,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 03:28:01,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:28:01,039 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 03:28:01,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:28:01,152 INFO L208 MainTranslator]: Completed translation [2020-10-26 03:28:01,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:28:01 WrapperNode [2020-10-26 03:28:01,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 03:28:01,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 03:28:01,154 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 03:28:01,154 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 03:28:01,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:28:01" (1/1) ... [2020-10-26 03:28:01,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:28:01" (1/1) ... [2020-10-26 03:28:01,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:28:01" (1/1) ... [2020-10-26 03:28:01,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:28:01" (1/1) ... [2020-10-26 03:28:01,199 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:28:01" (1/1) ... [2020-10-26 03:28:01,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:28:01" (1/1) ... [2020-10-26 03:28:01,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:28:01" (1/1) ... [2020-10-26 03:28:01,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 03:28:01,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 03:28:01,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 03:28:01,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 03:28:01,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:28:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:28:01,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 03:28:01,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 03:28:01,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-26 03:28:01,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-26 03:28:01,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-26 03:28:01,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-26 03:28:01,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-26 03:28:01,296 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrreplace [2020-10-26 03:28:01,297 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 03:28:01,297 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-26 03:28:01,297 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-26 03:28:01,297 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-26 03:28:01,298 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-26 03:28:01,298 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-26 03:28:01,298 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-26 03:28:01,298 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-26 03:28:01,299 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-26 03:28:01,299 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-26 03:28:01,299 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-26 03:28:01,299 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-26 03:28:01,300 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-26 03:28:01,300 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-26 03:28:01,300 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-26 03:28:01,300 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-26 03:28:01,301 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-26 03:28:01,301 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-26 03:28:01,301 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-26 03:28:01,301 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-26 03:28:01,302 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-26 03:28:01,302 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-26 03:28:01,302 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-26 03:28:01,302 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-26 03:28:01,303 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-26 03:28:01,303 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-26 03:28:01,303 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-26 03:28:01,303 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-26 03:28:01,304 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-26 03:28:01,304 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-26 03:28:01,304 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-26 03:28:01,304 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-26 03:28:01,304 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-26 03:28:01,305 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-26 03:28:01,305 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-26 03:28:01,305 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-26 03:28:01,305 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-26 03:28:01,306 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-26 03:28:01,306 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-26 03:28:01,306 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-26 03:28:01,306 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-26 03:28:01,306 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-26 03:28:01,307 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-26 03:28:01,307 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-26 03:28:01,307 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-26 03:28:01,307 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-26 03:28:01,308 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-26 03:28:01,308 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-26 03:28:01,308 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-26 03:28:01,308 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-26 03:28:01,309 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-26 03:28:01,309 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-26 03:28:01,309 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-26 03:28:01,309 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-26 03:28:01,310 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-26 03:28:01,310 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-26 03:28:01,310 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-26 03:28:01,310 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-26 03:28:01,310 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-26 03:28:01,311 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-26 03:28:01,311 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-26 03:28:01,311 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-26 03:28:01,311 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-26 03:28:01,312 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-26 03:28:01,312 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 03:28:01,312 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-26 03:28:01,312 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-26 03:28:01,313 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-26 03:28:01,313 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 03:28:01,313 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-26 03:28:01,313 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-26 03:28:01,313 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-26 03:28:01,314 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-26 03:28:01,314 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-26 03:28:01,314 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-26 03:28:01,314 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-26 03:28:01,315 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-26 03:28:01,315 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-26 03:28:01,315 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-26 03:28:01,315 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-26 03:28:01,316 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-26 03:28:01,316 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-26 03:28:01,316 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-26 03:28:01,316 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-26 03:28:01,316 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-26 03:28:01,317 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-26 03:28:01,317 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-26 03:28:01,317 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-26 03:28:01,317 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-26 03:28:01,317 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-26 03:28:01,318 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-26 03:28:01,318 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-26 03:28:01,318 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-26 03:28:01,318 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-26 03:28:01,319 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-26 03:28:01,319 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-26 03:28:01,319 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-26 03:28:01,319 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-26 03:28:01,319 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-26 03:28:01,320 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-26 03:28:01,320 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-26 03:28:01,320 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-26 03:28:01,320 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-26 03:28:01,321 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-26 03:28:01,321 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-26 03:28:01,321 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-26 03:28:01,321 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-26 03:28:01,321 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-26 03:28:01,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 03:28:01,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-26 03:28:01,322 INFO L130 BoogieDeclarations]: Found specification of procedure cstrreplace [2020-10-26 03:28:01,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 03:28:01,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 03:28:01,323 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 03:28:01,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 03:28:01,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 03:28:01,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 03:28:01,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 03:28:01,958 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 03:28:01,958 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-26 03:28:01,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:28:01 BoogieIcfgContainer [2020-10-26 03:28:01,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 03:28:01,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 03:28:01,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 03:28:01,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 03:28:01,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 03:28:00" (1/3) ... [2020-10-26 03:28:01,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@193387ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:28:01, skipping insertion in model container [2020-10-26 03:28:01,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:28:01" (2/3) ... [2020-10-26 03:28:01,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@193387ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:28:01, skipping insertion in model container [2020-10-26 03:28:01,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:28:01" (3/3) ... [2020-10-26 03:28:01,974 INFO L111 eAbstractionObserver]: Analyzing ICFG strreplace-alloca-2.i [2020-10-26 03:28:01,986 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 03:28:01,992 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-10-26 03:28:02,006 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-10-26 03:28:02,030 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 03:28:02,031 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-26 03:28:02,031 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 03:28:02,031 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 03:28:02,031 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 03:28:02,031 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 03:28:02,031 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 03:28:02,031 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 03:28:02,047 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-10-26 03:28:02,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 03:28:02,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:28:02,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:28:02,058 INFO L429 AbstractCegarLoop]: === Iteration 1 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:28:02,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:28:02,065 INFO L82 PathProgramCache]: Analyzing trace with hash -610270170, now seen corresponding path program 1 times [2020-10-26 03:28:02,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:28:02,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093592101] [2020-10-26 03:28:02,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:28:02,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:02,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:28:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:02,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:28:02,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093592101] [2020-10-26 03:28:02,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:28:02,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 03:28:02,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28292782] [2020-10-26 03:28:02,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:28:02,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:28:02,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:28:02,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:28:02,463 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-10-26 03:28:02,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:28:02,704 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-10-26 03:28:02,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:28:02,707 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-26 03:28:02,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:28:02,727 INFO L225 Difference]: With dead ends: 40 [2020-10-26 03:28:02,728 INFO L226 Difference]: Without dead ends: 37 [2020-10-26 03:28:02,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:28:02,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-26 03:28:02,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-26 03:28:02,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-26 03:28:02,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2020-10-26 03:28:02,782 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 10 [2020-10-26 03:28:02,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:28:02,783 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2020-10-26 03:28:02,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:28:02,783 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-10-26 03:28:02,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 03:28:02,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:28:02,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:28:02,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 03:28:02,786 INFO L429 AbstractCegarLoop]: === Iteration 2 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:28:02,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:28:02,787 INFO L82 PathProgramCache]: Analyzing trace with hash -610270169, now seen corresponding path program 1 times [2020-10-26 03:28:02,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:28:02,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798322215] [2020-10-26 03:28:02,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:28:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:02,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:28:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:02,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:28:02,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798322215] [2020-10-26 03:28:02,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:28:02,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:28:02,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991018806] [2020-10-26 03:28:02,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:28:02,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:28:02,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:28:02,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:28:02,965 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 5 states. [2020-10-26 03:28:03,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:28:03,129 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2020-10-26 03:28:03,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 03:28:03,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-26 03:28:03,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:28:03,131 INFO L225 Difference]: With dead ends: 36 [2020-10-26 03:28:03,131 INFO L226 Difference]: Without dead ends: 36 [2020-10-26 03:28:03,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:28:03,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-26 03:28:03,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-26 03:28:03,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-26 03:28:03,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-10-26 03:28:03,143 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 10 [2020-10-26 03:28:03,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:28:03,143 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-10-26 03:28:03,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:28:03,144 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-10-26 03:28:03,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 03:28:03,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:28:03,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:28:03,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 03:28:03,145 INFO L429 AbstractCegarLoop]: === Iteration 3 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:28:03,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:28:03,146 INFO L82 PathProgramCache]: Analyzing trace with hash -610270116, now seen corresponding path program 1 times [2020-10-26 03:28:03,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:28:03,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833657422] [2020-10-26 03:28:03,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:28:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:03,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:28:03,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:03,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:28:03,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833657422] [2020-10-26 03:28:03,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:28:03,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 03:28:03,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089304106] [2020-10-26 03:28:03,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:28:03,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:28:03,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:28:03,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:28:03,271 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 5 states. [2020-10-26 03:28:03,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:28:03,448 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2020-10-26 03:28:03,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 03:28:03,450 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-26 03:28:03,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:28:03,453 INFO L225 Difference]: With dead ends: 44 [2020-10-26 03:28:03,454 INFO L226 Difference]: Without dead ends: 44 [2020-10-26 03:28:03,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:28:03,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-26 03:28:03,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-10-26 03:28:03,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-26 03:28:03,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2020-10-26 03:28:03,465 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 10 [2020-10-26 03:28:03,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:28:03,466 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2020-10-26 03:28:03,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:28:03,466 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2020-10-26 03:28:03,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 03:28:03,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:28:03,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:28:03,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 03:28:03,468 INFO L429 AbstractCegarLoop]: === Iteration 4 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:28:03,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:28:03,469 INFO L82 PathProgramCache]: Analyzing trace with hash -610210534, now seen corresponding path program 1 times [2020-10-26 03:28:03,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:28:03,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351998083] [2020-10-26 03:28:03,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:28:03,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:03,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:28:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:03,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:28:03,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351998083] [2020-10-26 03:28:03,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:28:03,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:28:03,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4660801] [2020-10-26 03:28:03,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:28:03,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:28:03,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:28:03,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:28:03,579 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 5 states. [2020-10-26 03:28:03,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:28:03,792 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2020-10-26 03:28:03,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 03:28:03,794 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-26 03:28:03,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:28:03,795 INFO L225 Difference]: With dead ends: 48 [2020-10-26 03:28:03,795 INFO L226 Difference]: Without dead ends: 48 [2020-10-26 03:28:03,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 03:28:03,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-26 03:28:03,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 40. [2020-10-26 03:28:03,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-26 03:28:03,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-10-26 03:28:03,802 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 10 [2020-10-26 03:28:03,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:28:03,802 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-10-26 03:28:03,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:28:03,803 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-10-26 03:28:03,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-26 03:28:03,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:28:03,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:28:03,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 03:28:03,804 INFO L429 AbstractCegarLoop]: === Iteration 5 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:28:03,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:28:03,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1176041719, now seen corresponding path program 1 times [2020-10-26 03:28:03,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:28:03,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066892555] [2020-10-26 03:28:03,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:28:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:03,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:28:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:03,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:28:03,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066892555] [2020-10-26 03:28:03,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:28:03,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 03:28:03,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43598830] [2020-10-26 03:28:03,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 03:28:03,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:28:03,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 03:28:03,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:28:03,973 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 6 states. [2020-10-26 03:28:04,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:28:04,161 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-10-26 03:28:04,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 03:28:04,162 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-26 03:28:04,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:28:04,163 INFO L225 Difference]: With dead ends: 37 [2020-10-26 03:28:04,163 INFO L226 Difference]: Without dead ends: 37 [2020-10-26 03:28:04,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 03:28:04,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-26 03:28:04,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-26 03:28:04,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-26 03:28:04,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-26 03:28:04,169 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 14 [2020-10-26 03:28:04,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:28:04,169 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-26 03:28:04,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 03:28:04,170 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-26 03:28:04,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-26 03:28:04,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:28:04,171 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:28:04,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 03:28:04,171 INFO L429 AbstractCegarLoop]: === Iteration 6 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:28:04,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:28:04,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1176041720, now seen corresponding path program 1 times [2020-10-26 03:28:04,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:28:04,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256612602] [2020-10-26 03:28:04,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:28:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:04,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:28:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:04,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:28:04,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256612602] [2020-10-26 03:28:04,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:28:04,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 03:28:04,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704289535] [2020-10-26 03:28:04,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 03:28:04,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:28:04,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 03:28:04,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-26 03:28:04,345 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 7 states. [2020-10-26 03:28:04,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:28:04,680 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2020-10-26 03:28:04,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 03:28:04,681 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-26 03:28:04,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:28:04,685 INFO L225 Difference]: With dead ends: 47 [2020-10-26 03:28:04,685 INFO L226 Difference]: Without dead ends: 47 [2020-10-26 03:28:04,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-26 03:28:04,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-26 03:28:04,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2020-10-26 03:28:04,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-26 03:28:04,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-10-26 03:28:04,694 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 14 [2020-10-26 03:28:04,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:28:04,694 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-10-26 03:28:04,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 03:28:04,695 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2020-10-26 03:28:04,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-26 03:28:04,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:28:04,695 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:28:04,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 03:28:04,696 INFO L429 AbstractCegarLoop]: === Iteration 7 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:28:04,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:28:04,697 INFO L82 PathProgramCache]: Analyzing trace with hash 415323869, now seen corresponding path program 1 times [2020-10-26 03:28:04,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:28:04,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390179952] [2020-10-26 03:28:04,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:28:04,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:04,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:28:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:04,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:28:04,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390179952] [2020-10-26 03:28:04,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621639594] [2020-10-26 03:28:04,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:28:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:04,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-26 03:28:04,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:28:05,043 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-26 03:28:05,044 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:28:05,054 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:28:05,055 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:28:05,055 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-10-26 03:28:05,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:28:05,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:28:05,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2020-10-26 03:28:05,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215560571] [2020-10-26 03:28:05,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 03:28:05,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:28:05,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 03:28:05,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-26 03:28:05,111 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 7 states. [2020-10-26 03:28:05,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:28:05,430 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2020-10-26 03:28:05,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 03:28:05,430 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-26 03:28:05,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:28:05,431 INFO L225 Difference]: With dead ends: 49 [2020-10-26 03:28:05,432 INFO L226 Difference]: Without dead ends: 49 [2020-10-26 03:28:05,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-26 03:28:05,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-26 03:28:05,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 39. [2020-10-26 03:28:05,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-26 03:28:05,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-10-26 03:28:05,437 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 14 [2020-10-26 03:28:05,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:28:05,437 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-10-26 03:28:05,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 03:28:05,438 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-10-26 03:28:05,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-26 03:28:05,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:28:05,438 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:28:05,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-10-26 03:28:05,650 INFO L429 AbstractCegarLoop]: === Iteration 8 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:28:05,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:28:05,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1580673573, now seen corresponding path program 1 times [2020-10-26 03:28:05,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:28:05,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533273947] [2020-10-26 03:28:05,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:28:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:05,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:28:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:05,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:28:05,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533273947] [2020-10-26 03:28:05,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:28:05,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-26 03:28:05,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131418235] [2020-10-26 03:28:05,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 03:28:05,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:28:05,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 03:28:05,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-26 03:28:05,847 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 9 states. [2020-10-26 03:28:06,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:28:06,118 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2020-10-26 03:28:06,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 03:28:06,119 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-26 03:28:06,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:28:06,120 INFO L225 Difference]: With dead ends: 51 [2020-10-26 03:28:06,120 INFO L226 Difference]: Without dead ends: 51 [2020-10-26 03:28:06,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-10-26 03:28:06,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-26 03:28:06,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2020-10-26 03:28:06,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-26 03:28:06,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2020-10-26 03:28:06,126 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 19 [2020-10-26 03:28:06,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:28:06,126 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2020-10-26 03:28:06,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 03:28:06,126 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2020-10-26 03:28:06,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-26 03:28:06,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:28:06,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:28:06,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 03:28:06,127 INFO L429 AbstractCegarLoop]: === Iteration 9 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:28:06,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:28:06,128 INFO L82 PathProgramCache]: Analyzing trace with hash 2127487709, now seen corresponding path program 1 times [2020-10-26 03:28:06,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:28:06,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250461288] [2020-10-26 03:28:06,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:28:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:06,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:28:06,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:06,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:28:06,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250461288] [2020-10-26 03:28:06,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:28:06,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-26 03:28:06,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435746385] [2020-10-26 03:28:06,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 03:28:06,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:28:06,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 03:28:06,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-26 03:28:06,387 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand 10 states. [2020-10-26 03:28:06,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:28:06,689 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2020-10-26 03:28:06,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 03:28:06,689 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-10-26 03:28:06,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:28:06,690 INFO L225 Difference]: With dead ends: 64 [2020-10-26 03:28:06,690 INFO L226 Difference]: Without dead ends: 64 [2020-10-26 03:28:06,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-26 03:28:06,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-26 03:28:06,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 49. [2020-10-26 03:28:06,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-26 03:28:06,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2020-10-26 03:28:06,702 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 19 [2020-10-26 03:28:06,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:28:06,704 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2020-10-26 03:28:06,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 03:28:06,704 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2020-10-26 03:28:06,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-26 03:28:06,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:28:06,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:28:06,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 03:28:06,706 INFO L429 AbstractCegarLoop]: === Iteration 10 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:28:06,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:28:06,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1797581199, now seen corresponding path program 1 times [2020-10-26 03:28:06,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:28:06,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882453508] [2020-10-26 03:28:06,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:28:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:06,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:28:06,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:06,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-26 03:28:06,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:06,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:28:06,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882453508] [2020-10-26 03:28:06,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:28:06,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 03:28:06,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904803324] [2020-10-26 03:28:06,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 03:28:06,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:28:06,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 03:28:06,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:28:06,821 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand 6 states. [2020-10-26 03:28:06,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:28:06,942 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-10-26 03:28:06,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 03:28:06,942 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-26 03:28:06,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:28:06,943 INFO L225 Difference]: With dead ends: 61 [2020-10-26 03:28:06,943 INFO L226 Difference]: Without dead ends: 42 [2020-10-26 03:28:06,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 03:28:06,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-26 03:28:06,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2020-10-26 03:28:06,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-26 03:28:06,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-10-26 03:28:06,947 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 20 [2020-10-26 03:28:06,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:28:06,948 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-10-26 03:28:06,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 03:28:06,948 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-10-26 03:28:06,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-26 03:28:06,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:28:06,949 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:28:06,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 03:28:06,949 INFO L429 AbstractCegarLoop]: === Iteration 11 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:28:06,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:28:06,950 INFO L82 PathProgramCache]: Analyzing trace with hash 956679290, now seen corresponding path program 1 times [2020-10-26 03:28:06,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:28:06,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658666647] [2020-10-26 03:28:06,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:28:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:07,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:28:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:07,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:28:07,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658666647] [2020-10-26 03:28:07,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905649124] [2020-10-26 03:28:07,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:28:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:07,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-26 03:28:07,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:28:07,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:28:07,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:28:07,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2020-10-26 03:28:07,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442239584] [2020-10-26 03:28:07,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-26 03:28:07,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:28:07,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-26 03:28:07,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-26 03:28:07,356 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 14 states. [2020-10-26 03:28:07,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:28:07,642 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2020-10-26 03:28:07,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 03:28:07,642 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 23 [2020-10-26 03:28:07,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:28:07,643 INFO L225 Difference]: With dead ends: 44 [2020-10-26 03:28:07,643 INFO L226 Difference]: Without dead ends: 44 [2020-10-26 03:28:07,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2020-10-26 03:28:07,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-26 03:28:07,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2020-10-26 03:28:07,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-26 03:28:07,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-26 03:28:07,648 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 23 [2020-10-26 03:28:07,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:28:07,648 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-26 03:28:07,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-26 03:28:07,648 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-26 03:28:07,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-26 03:28:07,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:28:07,649 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:28:07,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:28:07,859 INFO L429 AbstractCegarLoop]: === Iteration 12 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:28:07,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:28:07,860 INFO L82 PathProgramCache]: Analyzing trace with hash -403117159, now seen corresponding path program 2 times [2020-10-26 03:28:07,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:28:07,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109195466] [2020-10-26 03:28:07,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:28:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:08,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:28:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:08,126 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:28:08,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109195466] [2020-10-26 03:28:08,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402301591] [2020-10-26 03:28:08,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:28:08,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-26 03:28:08,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 03:28:08,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-26 03:28:08,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:28:08,381 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2020-10-26 03:28:08,382 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:28:08,391 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:28:08,393 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-26 03:28:08,394 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2020-10-26 03:28:08,595 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-10-26 03:28:08,596 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:28:08,598 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:28:08,598 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:28:08,599 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-10-26 03:28:08,603 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:28:08,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:28:08,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2020-10-26 03:28:08,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132509538] [2020-10-26 03:28:08,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-26 03:28:08,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:28:08,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-26 03:28:08,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2020-10-26 03:28:08,606 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 19 states. [2020-10-26 03:28:09,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:28:09,203 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2020-10-26 03:28:09,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 03:28:09,204 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 28 [2020-10-26 03:28:09,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:28:09,206 INFO L225 Difference]: With dead ends: 59 [2020-10-26 03:28:09,206 INFO L226 Difference]: Without dead ends: 46 [2020-10-26 03:28:09,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2020-10-26 03:28:09,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-26 03:28:09,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2020-10-26 03:28:09,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-26 03:28:09,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-26 03:28:09,210 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 28 [2020-10-26 03:28:09,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:28:09,211 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-26 03:28:09,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-26 03:28:09,211 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-26 03:28:09,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-26 03:28:09,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:28:09,212 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:28:09,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-26 03:28:09,419 INFO L429 AbstractCegarLoop]: === Iteration 13 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:28:09,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:28:09,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1476818276, now seen corresponding path program 3 times [2020-10-26 03:28:09,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:28:09,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063318356] [2020-10-26 03:28:09,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:28:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:09,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:28:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:09,586 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:28:09,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063318356] [2020-10-26 03:28:09,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640395241] [2020-10-26 03:28:09,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:28:09,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-26 03:28:09,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 03:28:09,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-26 03:28:09,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:28:09,981 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:28:09,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:28:09,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2020-10-26 03:28:09,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092900590] [2020-10-26 03:28:09,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-26 03:28:09,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:28:09,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-26 03:28:09,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-26 03:28:09,983 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 19 states. [2020-10-26 03:28:10,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:28:10,458 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2020-10-26 03:28:10,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 03:28:10,459 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 32 [2020-10-26 03:28:10,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:28:10,460 INFO L225 Difference]: With dead ends: 52 [2020-10-26 03:28:10,460 INFO L226 Difference]: Without dead ends: 52 [2020-10-26 03:28:10,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2020-10-26 03:28:10,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-26 03:28:10,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-10-26 03:28:10,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-26 03:28:10,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2020-10-26 03:28:10,465 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 32 [2020-10-26 03:28:10,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:28:10,465 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2020-10-26 03:28:10,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-26 03:28:10,466 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2020-10-26 03:28:10,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-26 03:28:10,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:28:10,467 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:28:10,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:28:10,678 INFO L429 AbstractCegarLoop]: === Iteration 14 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:28:10,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:28:10,679 INFO L82 PathProgramCache]: Analyzing trace with hash -227169609, now seen corresponding path program 4 times [2020-10-26 03:28:10,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:28:10,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131331245] [2020-10-26 03:28:10,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:28:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:10,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:28:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:10,911 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:28:10,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131331245] [2020-10-26 03:28:10,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151777281] [2020-10-26 03:28:10,911 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:28:11,052 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-26 03:28:11,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 03:28:11,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 31 conjunts are in the unsatisfiable core [2020-10-26 03:28:11,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:28:11,072 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-26 03:28:11,073 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:28:11,080 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:28:11,081 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:28:11,081 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-10-26 03:28:11,233 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-10-26 03:28:11,233 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:28:11,244 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:28:11,245 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:28:11,245 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2020-10-26 03:28:11,506 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2020-10-26 03:28:11,509 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-26 03:28:11,531 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:28:11,538 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-26 03:28:11,541 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:28:11,541 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2020-10-26 03:28:11,542 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-26 03:28:11,557 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:28:11,559 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:28:11,560 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:34, output treesize:3 [2020-10-26 03:28:11,567 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:28:11,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:28:11,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 24 [2020-10-26 03:28:11,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917082811] [2020-10-26 03:28:11,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-26 03:28:11,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:28:11,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-26 03:28:11,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2020-10-26 03:28:11,571 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand 24 states. [2020-10-26 03:28:12,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:28:12,891 INFO L93 Difference]: Finished difference Result 89 states and 95 transitions. [2020-10-26 03:28:12,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-26 03:28:12,892 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 37 [2020-10-26 03:28:12,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:28:12,894 INFO L225 Difference]: With dead ends: 89 [2020-10-26 03:28:12,894 INFO L226 Difference]: Without dead ends: 57 [2020-10-26 03:28:12,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=193, Invalid=1529, Unknown=0, NotChecked=0, Total=1722 [2020-10-26 03:28:12,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-26 03:28:12,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-10-26 03:28:12,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-26 03:28:12,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-10-26 03:28:12,900 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 37 [2020-10-26 03:28:12,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:28:12,900 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-10-26 03:28:12,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-26 03:28:12,900 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-10-26 03:28:12,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-26 03:28:12,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:28:12,901 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:28:13,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-26 03:28:13,115 INFO L429 AbstractCegarLoop]: === Iteration 15 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:28:13,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:28:13,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1399570668, now seen corresponding path program 5 times [2020-10-26 03:28:13,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:28:13,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369821842] [2020-10-26 03:28:13,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:28:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:13,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:28:13,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:13,371 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:28:13,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369821842] [2020-10-26 03:28:13,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274454980] [2020-10-26 03:28:13,372 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:28:13,504 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-26 03:28:13,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 03:28:13,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 36 conjunts are in the unsatisfiable core [2020-10-26 03:28:13,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:28:13,523 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-26 03:28:13,524 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:28:13,534 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:28:13,535 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:28:13,535 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-10-26 03:28:13,679 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:28:13,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:28:13,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 15 [2020-10-26 03:28:13,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067715445] [2020-10-26 03:28:13,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-26 03:28:13,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:28:13,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-26 03:28:13,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-26 03:28:13,682 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 16 states. [2020-10-26 03:28:14,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:28:14,307 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2020-10-26 03:28:14,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 03:28:14,307 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 41 [2020-10-26 03:28:14,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:28:14,308 INFO L225 Difference]: With dead ends: 63 [2020-10-26 03:28:14,308 INFO L226 Difference]: Without dead ends: 63 [2020-10-26 03:28:14,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2020-10-26 03:28:14,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-26 03:28:14,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2020-10-26 03:28:14,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-26 03:28:14,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2020-10-26 03:28:14,321 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 41 [2020-10-26 03:28:14,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:28:14,322 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2020-10-26 03:28:14,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-26 03:28:14,322 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2020-10-26 03:28:14,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-26 03:28:14,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:28:14,324 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:28:14,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:28:14,535 INFO L429 AbstractCegarLoop]: === Iteration 16 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:28:14,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:28:14,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1288634049, now seen corresponding path program 6 times [2020-10-26 03:28:14,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:28:14,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189910536] [2020-10-26 03:28:14,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:28:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:14,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:28:14,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:14,863 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:28:14,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189910536] [2020-10-26 03:28:14,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499745008] [2020-10-26 03:28:14,864 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:28:15,025 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-10-26 03:28:15,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 03:28:15,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 41 conjunts are in the unsatisfiable core [2020-10-26 03:28:15,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:28:15,220 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2020-10-26 03:28:15,220 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:28:15,229 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:28:15,231 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-26 03:28:15,231 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2020-10-26 03:28:15,426 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-10-26 03:28:15,427 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:28:15,430 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:28:15,430 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:28:15,431 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-10-26 03:28:15,435 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:28:15,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:28:15,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 25 [2020-10-26 03:28:15,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164790513] [2020-10-26 03:28:15,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-26 03:28:15,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:28:15,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-26 03:28:15,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2020-10-26 03:28:15,438 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand 25 states. [2020-10-26 03:28:16,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:28:16,518 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2020-10-26 03:28:16,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 03:28:16,519 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 46 [2020-10-26 03:28:16,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:28:16,520 INFO L225 Difference]: With dead ends: 104 [2020-10-26 03:28:16,520 INFO L226 Difference]: Without dead ends: 68 [2020-10-26 03:28:16,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2020-10-26 03:28:16,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-26 03:28:16,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2020-10-26 03:28:16,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-26 03:28:16,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2020-10-26 03:28:16,525 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 46 [2020-10-26 03:28:16,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:28:16,526 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2020-10-26 03:28:16,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-26 03:28:16,526 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2020-10-26 03:28:16,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-26 03:28:16,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:28:16,527 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:28:16,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-26 03:28:16,739 INFO L429 AbstractCegarLoop]: === Iteration 17 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:28:16,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:28:16,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1360591486, now seen corresponding path program 7 times [2020-10-26 03:28:16,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:28:16,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453282705] [2020-10-26 03:28:16,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:28:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:16,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:28:16,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:17,006 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:28:17,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453282705] [2020-10-26 03:28:17,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706118563] [2020-10-26 03:28:17,006 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:28:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:17,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 35 conjunts are in the unsatisfiable core [2020-10-26 03:28:17,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:28:17,398 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 15 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:28:17,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:28:17,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 22 [2020-10-26 03:28:17,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572927910] [2020-10-26 03:28:17,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-26 03:28:17,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:28:17,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-26 03:28:17,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2020-10-26 03:28:17,401 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand 23 states. [2020-10-26 03:28:18,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:28:18,173 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2020-10-26 03:28:18,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 03:28:18,176 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 50 [2020-10-26 03:28:18,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:28:18,177 INFO L225 Difference]: With dead ends: 74 [2020-10-26 03:28:18,177 INFO L226 Difference]: Without dead ends: 74 [2020-10-26 03:28:18,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=121, Invalid=749, Unknown=0, NotChecked=0, Total=870 [2020-10-26 03:28:18,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-26 03:28:18,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2020-10-26 03:28:18,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-26 03:28:18,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2020-10-26 03:28:18,181 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 50 [2020-10-26 03:28:18,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:28:18,181 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2020-10-26 03:28:18,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-26 03:28:18,181 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2020-10-26 03:28:18,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-26 03:28:18,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:28:18,183 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:28:18,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-26 03:28:18,395 INFO L429 AbstractCegarLoop]: === Iteration 18 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:28:18,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:28:18,396 INFO L82 PathProgramCache]: Analyzing trace with hash -278982767, now seen corresponding path program 8 times [2020-10-26 03:28:18,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:28:18,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993108918] [2020-10-26 03:28:18,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:28:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:18,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:28:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:18,761 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 17 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:28:18,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993108918] [2020-10-26 03:28:18,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310190776] [2020-10-26 03:28:18,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:28:18,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-26 03:28:18,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 03:28:18,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 47 conjunts are in the unsatisfiable core [2020-10-26 03:28:18,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:28:19,138 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2020-10-26 03:28:19,139 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:28:19,147 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:28:19,149 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-26 03:28:19,150 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2020-10-26 03:28:19,367 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-10-26 03:28:19,368 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:28:19,370 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:28:19,370 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:28:19,370 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-10-26 03:28:19,379 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 17 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:28:19,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:28:19,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 28 [2020-10-26 03:28:19,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051257836] [2020-10-26 03:28:19,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-26 03:28:19,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:28:19,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-26 03:28:19,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=690, Unknown=0, NotChecked=0, Total=756 [2020-10-26 03:28:19,382 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand 28 states. [2020-10-26 03:28:21,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:28:21,095 INFO L93 Difference]: Finished difference Result 128 states and 140 transitions. [2020-10-26 03:28:21,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-26 03:28:21,096 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 55 [2020-10-26 03:28:21,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:28:21,098 INFO L225 Difference]: With dead ends: 128 [2020-10-26 03:28:21,098 INFO L226 Difference]: Without dead ends: 79 [2020-10-26 03:28:21,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=167, Invalid=1639, Unknown=0, NotChecked=0, Total=1806 [2020-10-26 03:28:21,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-26 03:28:21,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2020-10-26 03:28:21,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-26 03:28:21,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2020-10-26 03:28:21,102 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 55 [2020-10-26 03:28:21,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:28:21,103 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2020-10-26 03:28:21,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-26 03:28:21,103 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2020-10-26 03:28:21,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-26 03:28:21,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:28:21,104 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:28:21,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-26 03:28:21,316 INFO L429 AbstractCegarLoop]: === Iteration 19 === [cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:28:21,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:28:21,317 INFO L82 PathProgramCache]: Analyzing trace with hash -714725714, now seen corresponding path program 9 times [2020-10-26 03:28:21,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:28:21,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650072202] [2020-10-26 03:28:21,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:28:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:21,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:28:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:28:21,700 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 15 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:28:21,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650072202] [2020-10-26 03:28:21,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813014010] [2020-10-26 03:28:21,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:28:21,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-10-26 03:28:21,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 03:28:21,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 33 conjunts are in the unsatisfiable core [2020-10-26 03:28:21,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:28:21,883 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-26 03:28:21,883 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:28:21,887 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:28:21,888 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:28:21,888 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-26 03:28:21,923 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2020-10-26 03:28:21,923 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:28:21,930 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:28:21,932 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-26 03:28:21,932 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:19 [2020-10-26 03:28:22,140 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:28:22,140 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2020-10-26 03:28:22,141 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-26 03:28:22,150 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:28:22,152 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-26 03:28:22,156 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2020-10-26 03:28:22,156 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2020-10-26 03:28:22,208 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-26 03:28:22,361 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-26 03:28:22,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:28:22,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 23 [2020-10-26 03:28:22,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888984831] [2020-10-26 03:28:22,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-26 03:28:22,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:28:22,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-26 03:28:22,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2020-10-26 03:28:22,367 INFO L87 Difference]: Start difference. First operand 76 states and 83 transitions. Second operand 24 states. [2020-10-26 03:28:23,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:28:23,753 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2020-10-26 03:28:23,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 03:28:23,755 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 59 [2020-10-26 03:28:23,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:28:23,755 INFO L225 Difference]: With dead ends: 75 [2020-10-26 03:28:23,755 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 03:28:23,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=197, Invalid=993, Unknown=0, NotChecked=0, Total=1190 [2020-10-26 03:28:23,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 03:28:23,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 03:28:23,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 03:28:23,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 03:28:23,756 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2020-10-26 03:28:23,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:28:23,757 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 03:28:23,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-26 03:28:23,757 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 03:28:23,757 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 03:28:23,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:28:23,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 03:28:23 BoogieIcfgContainer [2020-10-26 03:28:23,970 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 03:28:23,971 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 03:28:23,971 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 03:28:23,971 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 03:28:23,972 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:28:01" (3/4) ... [2020-10-26 03:28:23,976 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 03:28:23,982 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-26 03:28:23,982 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cstrreplace [2020-10-26 03:28:23,982 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2020-10-26 03:28:23,983 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2020-10-26 03:28:23,983 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2020-10-26 03:28:23,983 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2020-10-26 03:28:23,983 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-26 03:28:23,983 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2020-10-26 03:28:23,987 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-26 03:28:23,987 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-26 03:28:23,988 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 03:28:23,988 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 03:28:24,033 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 03:28:24,034 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 03:28:24,035 INFO L168 Benchmark]: Toolchain (without parser) took 23356.28 ms. Allocated memory was 41.9 MB in the beginning and 157.3 MB in the end (delta: 115.3 MB). Free memory was 26.6 MB in the beginning and 120.8 MB in the end (delta: -94.2 MB). Peak memory consumption was 20.7 MB. Max. memory is 16.1 GB. [2020-10-26 03:28:24,036 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 41.9 MB. Free memory is still 24.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:28:24,036 INFO L168 Benchmark]: CACSL2BoogieTranslator took 467.13 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 26.0 MB in the beginning and 23.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2020-10-26 03:28:24,037 INFO L168 Benchmark]: Boogie Preprocessor took 60.71 ms. Allocated memory is still 50.3 MB. Free memory was 23.1 MB in the beginning and 33.3 MB in the end (delta: -10.1 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. [2020-10-26 03:28:24,037 INFO L168 Benchmark]: RCFGBuilder took 744.79 ms. Allocated memory is still 50.3 MB. Free memory was 33.3 MB in the beginning and 20.0 MB in the end (delta: 13.3 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2020-10-26 03:28:24,038 INFO L168 Benchmark]: TraceAbstraction took 22004.29 ms. Allocated memory was 60.8 MB in the beginning and 157.3 MB in the end (delta: 96.5 MB). Free memory was 42.1 MB in the beginning and 123.7 MB in the end (delta: -81.6 MB). Peak memory consumption was 15.3 MB. Max. memory is 16.1 GB. [2020-10-26 03:28:24,039 INFO L168 Benchmark]: Witness Printer took 63.32 ms. Allocated memory is still 157.3 MB. Free memory was 123.7 MB in the beginning and 120.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 03:28:24,041 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 41.9 MB. Free memory is still 24.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 467.13 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 26.0 MB in the beginning and 23.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.71 ms. Allocated memory is still 50.3 MB. Free memory was 23.1 MB in the beginning and 33.3 MB in the end (delta: -10.1 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 744.79 ms. Allocated memory is still 50.3 MB. Free memory was 33.3 MB in the beginning and 20.0 MB in the end (delta: 13.3 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 22004.29 ms. Allocated memory was 60.8 MB in the beginning and 157.3 MB in the end (delta: 96.5 MB). Free memory was 42.1 MB in the beginning and 123.7 MB in the end (delta: -81.6 MB). Peak memory consumption was 15.3 MB. Max. memory is 16.1 GB. * Witness Printer took 63.32 ms. Allocated memory is still 157.3 MB. Free memory was 123.7 MB in the beginning and 120.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 519]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 519]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 538]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 538]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 526]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 11 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 57 locations, 11 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 21.9s, OverallIterations: 19, TraceHistogramMax: 5, AutomataDifference: 10.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 488 SDtfs, 1586 SDslu, 1178 SDs, 0 SdLazy, 6251 SolverSat, 317 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 679 GetRequests, 341 SyntacticMatches, 9 SemanticMatches, 329 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1114 ImplicationChecksByTransitivity, 8.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=18, 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, 19 MinimizatonAttempts, 80 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 6.6s InterpolantComputationTime, 896 NumberOfCodeBlocks, 896 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 867 ConstructedInterpolants, 44 QuantifiedInterpolants, 278416 SizeOfPredicates, 86 NumberOfNonLiveVariables, 1597 ConjunctsInSsa, 307 ConjunctsInUnsatCore, 29 InterpolantComputations, 9 PerfectInterpolantSequences, 221/754 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...