./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.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/mult_array-alloca-1.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 b9551eac17e9ca0a42612f73eb01545dde991582 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 05:50:01,856 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 05:50:01,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 05:50:01,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 05:50:01,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 05:50:01,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 05:50:01,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 05:50:01,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 05:50:01,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 05:50:01,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 05:50:01,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 05:50:01,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 05:50:01,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 05:50:01,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 05:50:01,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 05:50:01,917 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 05:50:01,918 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 05:50:01,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 05:50:01,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 05:50:01,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 05:50:01,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 05:50:01,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 05:50:01,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 05:50:01,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 05:50:01,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 05:50:01,958 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 05:50:01,958 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 05:50:01,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 05:50:01,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 05:50:01,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 05:50:01,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 05:50:01,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 05:50:01,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 05:50:01,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 05:50:01,971 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 05:50:01,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 05:50:01,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 05:50:01,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 05:50:01,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 05:50:01,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 05:50:01,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 05:50:01,977 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 05:50:02,022 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 05:50:02,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 05:50:02,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 05:50:02,025 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 05:50:02,026 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 05:50:02,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 05:50:02,026 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 05:50:02,026 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 05:50:02,027 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 05:50:02,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 05:50:02,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 05:50:02,028 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 05:50:02,029 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 05:50:02,029 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 05:50:02,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 05:50:02,030 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 05:50:02,030 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 05:50:02,031 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 05:50:02,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 05:50:02,031 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 05:50:02,031 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 05:50:02,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 05:50:02,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 05:50:02,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 05:50:02,032 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 05:50:02,033 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 05:50:02,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 05:50:02,033 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 05:50:02,033 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> b9551eac17e9ca0a42612f73eb01545dde991582 [2020-10-20 05:50:02,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 05:50:02,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 05:50:02,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 05:50:02,253 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 05:50:02,254 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 05:50:02,255 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i [2020-10-20 05:50:02,337 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73b092c86/a0e104782922435d9d1177bf899868df/FLAG165a4c27c [2020-10-20 05:50:02,884 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 05:50:02,885 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i [2020-10-20 05:50:02,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73b092c86/a0e104782922435d9d1177bf899868df/FLAG165a4c27c [2020-10-20 05:50:03,170 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73b092c86/a0e104782922435d9d1177bf899868df [2020-10-20 05:50:03,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 05:50:03,181 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 05:50:03,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 05:50:03,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 05:50:03,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 05:50:03,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:50:03" (1/1) ... [2020-10-20 05:50:03,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b6ddbf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:03, skipping insertion in model container [2020-10-20 05:50:03,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:50:03" (1/1) ... [2020-10-20 05:50:03,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 05:50:03,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 05:50:03,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:50:03,701 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 05:50:03,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:50:03,808 INFO L208 MainTranslator]: Completed translation [2020-10-20 05:50:03,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:03 WrapperNode [2020-10-20 05:50:03,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 05:50:03,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 05:50:03,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 05:50:03,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 05:50:03,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:03" (1/1) ... [2020-10-20 05:50:03,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:03" (1/1) ... [2020-10-20 05:50:03,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:03" (1/1) ... [2020-10-20 05:50:03,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:03" (1/1) ... [2020-10-20 05:50:03,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:03" (1/1) ... [2020-10-20 05:50:03,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:03" (1/1) ... [2020-10-20 05:50:03,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:03" (1/1) ... [2020-10-20 05:50:03,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 05:50:03,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 05:50:03,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 05:50:03,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 05:50:03,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:03" (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 [2020-10-20 05:50:03,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 05:50:03,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 05:50:03,949 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-20 05:50:03,949 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-20 05:50:03,949 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-20 05:50:03,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-20 05:50:03,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-20 05:50:03,950 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 05:50:03,950 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 05:50:03,951 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 05:50:03,951 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 05:50:03,951 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 05:50:03,951 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 05:50:03,952 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 05:50:03,952 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 05:50:03,952 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 05:50:03,952 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 05:50:03,952 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 05:50:03,953 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 05:50:03,953 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 05:50:03,953 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 05:50:03,953 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 05:50:03,954 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 05:50:03,954 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 05:50:03,954 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-20 05:50:03,954 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-20 05:50:03,954 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-20 05:50:03,955 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-20 05:50:03,955 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-20 05:50:03,955 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 05:50:03,955 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 05:50:03,955 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 05:50:03,956 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 05:50:03,956 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 05:50:03,956 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 05:50:03,956 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 05:50:03,957 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 05:50:03,957 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 05:50:03,957 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 05:50:03,957 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 05:50:03,958 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 05:50:03,958 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 05:50:03,958 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 05:50:03,958 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 05:50:03,958 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 05:50:03,959 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 05:50:03,959 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 05:50:03,959 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 05:50:03,959 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 05:50:03,959 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 05:50:03,960 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 05:50:03,960 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 05:50:03,960 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 05:50:03,960 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 05:50:03,961 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 05:50:03,961 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 05:50:03,961 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 05:50:03,961 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 05:50:03,962 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 05:50:03,962 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 05:50:03,962 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 05:50:03,962 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 05:50:03,962 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 05:50:03,963 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 05:50:03,963 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 05:50:03,963 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 05:50:03,963 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 05:50:03,963 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 05:50:03,964 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 05:50:03,964 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 05:50:03,964 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-20 05:50:03,964 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 05:50:03,964 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 05:50:03,965 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-20 05:50:03,965 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 05:50:03,965 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 05:50:03,965 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-20 05:50:03,966 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 05:50:03,966 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 05:50:03,966 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 05:50:03,966 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 05:50:03,966 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 05:50:03,967 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 05:50:03,967 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 05:50:03,967 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 05:50:03,967 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 05:50:03,967 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 05:50:03,968 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 05:50:03,968 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 05:50:03,968 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 05:50:03,968 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 05:50:03,968 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 05:50:03,969 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 05:50:03,969 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 05:50:03,969 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 05:50:03,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 05:50:03,969 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 05:50:03,970 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 05:50:03,970 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 05:50:03,970 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 05:50:03,970 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 05:50:03,970 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 05:50:03,971 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 05:50:03,971 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 05:50:03,971 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 05:50:03,971 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 05:50:03,971 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 05:50:03,972 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 05:50:03,972 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 05:50:03,972 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 05:50:03,972 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 05:50:03,973 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 05:50:03,973 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 05:50:03,974 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 05:50:03,974 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 05:50:03,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 05:50:03,974 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 05:50:03,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 05:50:03,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 05:50:03,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 05:50:03,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 05:50:03,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 05:50:03,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 05:50:04,480 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 05:50:04,481 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-20 05:50:04,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:50:04 BoogieIcfgContainer [2020-10-20 05:50:04,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 05:50:04,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 05:50:04,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 05:50:04,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 05:50:04,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:50:03" (1/3) ... [2020-10-20 05:50:04,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35fa23e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:50:04, skipping insertion in model container [2020-10-20 05:50:04,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:03" (2/3) ... [2020-10-20 05:50:04,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35fa23e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:50:04, skipping insertion in model container [2020-10-20 05:50:04,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:50:04" (3/3) ... [2020-10-20 05:50:04,498 INFO L111 eAbstractionObserver]: Analyzing ICFG mult_array-alloca-1.i [2020-10-20 05:50:04,510 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 05:50:04,518 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-20 05:50:04,529 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-20 05:50:04,547 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 05:50:04,547 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 05:50:04,547 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 05:50:04,547 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 05:50:04,547 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 05:50:04,548 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 05:50:04,548 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 05:50:04,548 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 05:50:04,561 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-20 05:50:04,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 05:50:04,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:04,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:04,573 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:04,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:04,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1489715982, now seen corresponding path program 1 times [2020-10-20 05:50:04,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:04,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589565106] [2020-10-20 05:50:04,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:04,698 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-20 05:50:04,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [948757714] [2020-10-20 05:50:04,699 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 [2020-10-20 05:50:04,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:04,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 05:50:04,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:50:05,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:05,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589565106] [2020-10-20 05:50:05,014 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-20 05:50:05,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948757714] [2020-10-20 05:50:05,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:50:05,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 05:50:05,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424661440] [2020-10-20 05:50:05,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 05:50:05,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:05,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 05:50:05,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:50:05,043 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 4 states. [2020-10-20 05:50:05,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:05,119 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2020-10-20 05:50:05,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 05:50:05,121 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-20 05:50:05,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:05,132 INFO L225 Difference]: With dead ends: 33 [2020-10-20 05:50:05,133 INFO L226 Difference]: Without dead ends: 30 [2020-10-20 05:50:05,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:50:05,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-20 05:50:05,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-20 05:50:05,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-20 05:50:05,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-10-20 05:50:05,187 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 12 [2020-10-20 05:50:05,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:05,188 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-10-20 05:50:05,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 05:50:05,188 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-10-20 05:50:05,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 05:50:05,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:05,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:05,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-10-20 05:50:05,403 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:05,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:05,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1063444840, now seen corresponding path program 1 times [2020-10-20 05:50:05,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:05,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009230537] [2020-10-20 05:50:05,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:05,420 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-20 05:50:05,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1248040066] [2020-10-20 05:50:05,421 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 [2020-10-20 05:50:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:05,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 05:50:05,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:50:05,592 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-10-20 05:50:05,593 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 1 case distinctions, treesize of input 9 treesize of output 11 [2020-10-20 05:50:05,594 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:50:05,599 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:50:05,602 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 05:50:05,602 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2020-10-20 05:50:05,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:05,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009230537] [2020-10-20 05:50:05,615 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-20 05:50:05,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248040066] [2020-10-20 05:50:05,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:50:05,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 05:50:05,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094479224] [2020-10-20 05:50:05,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 05:50:05,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:05,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 05:50:05,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 05:50:05,619 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 3 states. [2020-10-20 05:50:05,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:05,652 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-10-20 05:50:05,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 05:50:05,653 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-20 05:50:05,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:05,654 INFO L225 Difference]: With dead ends: 28 [2020-10-20 05:50:05,655 INFO L226 Difference]: Without dead ends: 28 [2020-10-20 05:50:05,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 05:50:05,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-20 05:50:05,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-20 05:50:05,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-20 05:50:05,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-10-20 05:50:05,660 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 13 [2020-10-20 05:50:05,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:05,661 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-10-20 05:50:05,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 05:50:05,661 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-10-20 05:50:05,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 05:50:05,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:05,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:05,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:50:05,874 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:05,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:05,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1063444839, now seen corresponding path program 1 times [2020-10-20 05:50:05,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:05,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627459077] [2020-10-20 05:50:05,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:05,888 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-20 05:50:05,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [699010884] [2020-10-20 05:50:05,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-10-20 05:50:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:06,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-20 05:50:06,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:50:06,039 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_12|], 1=[|v_#valid_25|]} [2020-10-20 05:50:06,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 05:50:06,047 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2020-10-20 05:50:06,047 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:50:06,061 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:50:06,071 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 10 treesize of output 8 [2020-10-20 05:50:06,073 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 05:50:06,098 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:50:06,135 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-20 05:50:06,137 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:30, output treesize:35 [2020-10-20 05:50:06,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:06,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627459077] [2020-10-20 05:50:06,292 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-20 05:50:06,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699010884] [2020-10-20 05:50:06,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:50:06,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 05:50:06,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604046353] [2020-10-20 05:50:06,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 05:50:06,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:06,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 05:50:06,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:50:06,304 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2020-10-20 05:50:06,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:06,791 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2020-10-20 05:50:06,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 05:50:06,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-20 05:50:06,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:06,793 INFO L225 Difference]: With dead ends: 32 [2020-10-20 05:50:06,794 INFO L226 Difference]: Without dead ends: 32 [2020-10-20 05:50:06,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-20 05:50:06,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-20 05:50:06,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-10-20 05:50:06,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-20 05:50:06,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-10-20 05:50:06,800 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 13 [2020-10-20 05:50:06,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:06,801 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-10-20 05:50:06,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 05:50:06,801 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-10-20 05:50:06,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 05:50:06,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:06,802 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:07,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:50:07,004 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:07,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:07,004 INFO L82 PathProgramCache]: Analyzing trace with hash -650126436, now seen corresponding path program 1 times [2020-10-20 05:50:07,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:07,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842971375] [2020-10-20 05:50:07,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:07,035 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-20 05:50:07,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1946300100] [2020-10-20 05:50:07,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-10-20 05:50:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:07,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 05:50:07,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:50:07,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:07,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842971375] [2020-10-20 05:50:07,193 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-20 05:50:07,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946300100] [2020-10-20 05:50:07,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:50:07,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 05:50:07,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364190292] [2020-10-20 05:50:07,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 05:50:07,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:07,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 05:50:07,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:50:07,195 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2020-10-20 05:50:07,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:07,371 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2020-10-20 05:50:07,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 05:50:07,371 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-20 05:50:07,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:07,372 INFO L225 Difference]: With dead ends: 51 [2020-10-20 05:50:07,372 INFO L226 Difference]: Without dead ends: 51 [2020-10-20 05:50:07,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:50:07,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-20 05:50:07,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 39. [2020-10-20 05:50:07,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-20 05:50:07,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-20 05:50:07,384 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 17 [2020-10-20 05:50:07,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:07,385 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-20 05:50:07,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 05:50:07,385 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-20 05:50:07,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 05:50:07,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:07,386 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:07,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:50:07,601 INFO L429 AbstractCegarLoop]: === Iteration 5 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:07,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:07,602 INFO L82 PathProgramCache]: Analyzing trace with hash 50938142, now seen corresponding path program 1 times [2020-10-20 05:50:07,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:07,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704050125] [2020-10-20 05:50:07,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:07,614 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-20 05:50:07,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1535973547] [2020-10-20 05:50:07,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-10-20 05:50:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:07,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-20 05:50:07,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:50:07,737 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_13|], 1=[|v_#valid_26|]} [2020-10-20 05:50:07,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 05:50:07,743 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2020-10-20 05:50:07,745 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:50:07,759 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:50:07,768 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 10 treesize of output 8 [2020-10-20 05:50:07,769 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 05:50:07,782 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:50:07,786 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-20 05:50:07,787 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:27, output treesize:24 [2020-10-20 05:50:07,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:07,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704050125] [2020-10-20 05:50:07,930 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-20 05:50:07,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535973547] [2020-10-20 05:50:07,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-20 05:50:07,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-20 05:50:07,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477596882] [2020-10-20 05:50:07,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:50:07,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:07,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:50:07,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:50:07,933 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 6 states. [2020-10-20 05:50:08,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:08,085 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-10-20 05:50:08,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:50:08,086 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-20 05:50:08,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:08,087 INFO L225 Difference]: With dead ends: 40 [2020-10-20 05:50:08,087 INFO L226 Difference]: Without dead ends: 40 [2020-10-20 05:50:08,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-20 05:50:08,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-20 05:50:08,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2020-10-20 05:50:08,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-20 05:50:08,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-20 05:50:08,094 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 17 [2020-10-20 05:50:08,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:08,095 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-20 05:50:08,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:50:08,095 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-20 05:50:08,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 05:50:08,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:08,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:08,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:50:08,310 INFO L429 AbstractCegarLoop]: === Iteration 6 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:08,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:08,311 INFO L82 PathProgramCache]: Analyzing trace with hash -2001298264, now seen corresponding path program 1 times [2020-10-20 05:50:08,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:08,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552752380] [2020-10-20 05:50:08,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:08,324 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-20 05:50:08,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1049191517] [2020-10-20 05:50:08,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-10-20 05:50:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:08,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 05:50:08,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:50:08,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:08,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552752380] [2020-10-20 05:50:08,497 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-20 05:50:08,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049191517] [2020-10-20 05:50:08,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:50:08,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 05:50:08,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352566108] [2020-10-20 05:50:08,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 05:50:08,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:08,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 05:50:08,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-10-20 05:50:08,499 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 7 states. [2020-10-20 05:50:08,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:08,587 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2020-10-20 05:50:08,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 05:50:08,591 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-20 05:50:08,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:08,592 INFO L225 Difference]: With dead ends: 48 [2020-10-20 05:50:08,592 INFO L226 Difference]: Without dead ends: 48 [2020-10-20 05:50:08,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-10-20 05:50:08,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-20 05:50:08,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 43. [2020-10-20 05:50:08,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-20 05:50:08,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-10-20 05:50:08,597 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 19 [2020-10-20 05:50:08,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:08,598 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-10-20 05:50:08,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 05:50:08,598 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-10-20 05:50:08,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 05:50:08,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:08,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:08,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:50:08,803 INFO L429 AbstractCegarLoop]: === Iteration 7 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:08,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:08,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1706863018, now seen corresponding path program 1 times [2020-10-20 05:50:08,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:08,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584464243] [2020-10-20 05:50:08,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:08,814 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-20 05:50:08,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [836422979] [2020-10-20 05:50:08,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-10-20 05:50:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:08,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-20 05:50:08,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:50:09,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:09,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584464243] [2020-10-20 05:50:09,018 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-20 05:50:09,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836422979] [2020-10-20 05:50:09,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:50:09,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-20 05:50:09,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854434841] [2020-10-20 05:50:09,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 05:50:09,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:09,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 05:50:09,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:50:09,020 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 8 states. [2020-10-20 05:50:09,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:09,226 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2020-10-20 05:50:09,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 05:50:09,229 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-20 05:50:09,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:09,230 INFO L225 Difference]: With dead ends: 45 [2020-10-20 05:50:09,230 INFO L226 Difference]: Without dead ends: 45 [2020-10-20 05:50:09,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2020-10-20 05:50:09,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-20 05:50:09,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2020-10-20 05:50:09,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-20 05:50:09,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-10-20 05:50:09,236 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 19 [2020-10-20 05:50:09,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:09,238 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-20 05:50:09,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 05:50:09,238 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-10-20 05:50:09,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 05:50:09,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:09,239 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] [2020-10-20 05:50:09,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:50:09,440 INFO L429 AbstractCegarLoop]: === Iteration 8 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:09,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:09,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1910705585, now seen corresponding path program 1 times [2020-10-20 05:50:09,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:09,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147640903] [2020-10-20 05:50:09,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:09,454 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-20 05:50:09,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [686764840] [2020-10-20 05:50:09,454 INFO L95 rtionOrderModulation]: Keeping assertion order 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 [2020-10-20 05:50:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:09,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-20 05:50:09,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:50:09,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 05:50:09,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147640903] [2020-10-20 05:50:09,594 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-20 05:50:09,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686764840] [2020-10-20 05:50:09,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:50:09,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 05:50:09,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687925664] [2020-10-20 05:50:09,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 05:50:09,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:09,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 05:50:09,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:50:09,597 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 5 states. [2020-10-20 05:50:09,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:09,632 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-10-20 05:50:09,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 05:50:09,633 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-20 05:50:09,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:09,634 INFO L225 Difference]: With dead ends: 35 [2020-10-20 05:50:09,634 INFO L226 Difference]: Without dead ends: 33 [2020-10-20 05:50:09,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:50:09,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-20 05:50:09,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-20 05:50:09,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-20 05:50:09,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-20 05:50:09,639 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 20 [2020-10-20 05:50:09,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:09,640 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-20 05:50:09,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 05:50:09,640 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-20 05:50:09,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 05:50:09,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:09,641 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] [2020-10-20 05:50:09,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-10-20 05:50:09,851 INFO L429 AbstractCegarLoop]: === Iteration 9 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:09,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:09,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1910704045, now seen corresponding path program 1 times [2020-10-20 05:50:09,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:09,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022164153] [2020-10-20 05:50:09,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:09,863 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-20 05:50:09,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [119954512] [2020-10-20 05:50:09,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-10-20 05:50:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:09,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 05:50:09,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:50:09,967 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-10-20 05:50:09,968 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 1 case distinctions, treesize of input 9 treesize of output 11 [2020-10-20 05:50:09,969 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:50:09,972 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:50:09,973 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 05:50:09,973 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2020-10-20 05:50:09,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 05:50:09,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022164153] [2020-10-20 05:50:09,983 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-20 05:50:09,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119954512] [2020-10-20 05:50:09,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:50:09,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 05:50:09,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33507178] [2020-10-20 05:50:09,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 05:50:09,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:09,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 05:50:09,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 05:50:09,984 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 3 states. [2020-10-20 05:50:10,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:10,005 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-10-20 05:50:10,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 05:50:10,006 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-20 05:50:10,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:10,007 INFO L225 Difference]: With dead ends: 32 [2020-10-20 05:50:10,007 INFO L226 Difference]: Without dead ends: 32 [2020-10-20 05:50:10,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 05:50:10,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-20 05:50:10,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-20 05:50:10,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-20 05:50:10,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-20 05:50:10,010 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 20 [2020-10-20 05:50:10,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:10,011 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-20 05:50:10,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 05:50:10,011 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-20 05:50:10,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 05:50:10,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:10,012 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] [2020-10-20 05:50:10,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:50:10,215 INFO L429 AbstractCegarLoop]: === Iteration 10 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:10,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:10,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1910704044, now seen corresponding path program 1 times [2020-10-20 05:50:10,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:10,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932376939] [2020-10-20 05:50:10,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:10,225 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-20 05:50:10,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1738637972] [2020-10-20 05:50:10,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-10-20 05:50:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:10,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 05:50:10,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:50:10,346 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:50:10,347 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 1 case distinctions, treesize of input 15 treesize of output 35 [2020-10-20 05:50:10,347 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:50:10,368 INFO L625 ElimStorePlain]: treesize reduction 14, result has 63.2 percent of original size [2020-10-20 05:50:10,372 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:50:10,373 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:13 [2020-10-20 05:50:10,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 05:50:10,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932376939] [2020-10-20 05:50:10,458 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-20 05:50:10,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738637972] [2020-10-20 05:50:10,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:50:10,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 05:50:10,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533767042] [2020-10-20 05:50:10,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 05:50:10,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:10,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 05:50:10,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:50:10,459 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 5 states. [2020-10-20 05:50:10,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:10,540 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-10-20 05:50:10,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 05:50:10,541 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-20 05:50:10,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:10,541 INFO L225 Difference]: With dead ends: 31 [2020-10-20 05:50:10,541 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 05:50:10,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:50:10,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 05:50:10,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 05:50:10,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 05:50:10,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 05:50:10,542 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-10-20 05:50:10,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:10,542 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 05:50:10,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 05:50:10,543 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 05:50:10,543 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 05:50:10,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:50:10,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:50:10 BoogieIcfgContainer [2020-10-20 05:50:10,751 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 05:50:10,751 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 05:50:10,751 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 05:50:10,751 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 05:50:10,752 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:50:04" (3/4) ... [2020-10-20 05:50:10,755 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 05:50:10,761 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-20 05:50:10,761 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2020-10-20 05:50:10,761 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2020-10-20 05:50:10,762 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2020-10-20 05:50:10,762 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2020-10-20 05:50:10,762 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-20 05:50:10,762 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2020-10-20 05:50:10,768 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-10-20 05:50:10,768 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-10-20 05:50:10,768 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-10-20 05:50:10,768 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 05:50:10,831 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 05:50:10,831 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 05:50:10,833 INFO L168 Benchmark]: Toolchain (without parser) took 7657.99 ms. Allocated memory was 35.1 MB in the beginning and 75.5 MB in the end (delta: 40.4 MB). Free memory was 15.9 MB in the beginning and 25.9 MB in the end (delta: -10.0 MB). Peak memory consumption was 30.3 MB. Max. memory is 14.3 GB. [2020-10-20 05:50:10,833 INFO L168 Benchmark]: CDTParser took 0.66 ms. Allocated memory is still 33.6 MB. Free memory was 10.7 MB in the beginning and 10.6 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 05:50:10,834 INFO L168 Benchmark]: CACSL2BoogieTranslator took 629.04 ms. Allocated memory was 35.1 MB in the beginning and 44.0 MB in the end (delta: 8.9 MB). Free memory was 14.9 MB in the beginning and 15.0 MB in the end (delta: -100.2 kB). Peak memory consumption was 14.6 MB. Max. memory is 14.3 GB. [2020-10-20 05:50:10,834 INFO L168 Benchmark]: Boogie Preprocessor took 72.74 ms. Allocated memory was 44.0 MB in the beginning and 46.1 MB in the end (delta: 2.1 MB). Free memory was 15.0 MB in the beginning and 26.3 MB in the end (delta: -11.4 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. [2020-10-20 05:50:10,835 INFO L168 Benchmark]: RCFGBuilder took 598.85 ms. Allocated memory was 46.1 MB in the beginning and 47.7 MB in the end (delta: 1.6 MB). Free memory was 26.3 MB in the beginning and 18.0 MB in the end (delta: 8.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 14.3 GB. [2020-10-20 05:50:10,835 INFO L168 Benchmark]: TraceAbstraction took 6266.23 ms. Allocated memory was 47.7 MB in the beginning and 75.5 MB in the end (delta: 27.8 MB). Free memory was 17.7 MB in the beginning and 29.3 MB in the end (delta: -11.7 MB). Peak memory consumption was 16.1 MB. Max. memory is 14.3 GB. [2020-10-20 05:50:10,836 INFO L168 Benchmark]: Witness Printer took 80.35 ms. Allocated memory is still 75.5 MB. Free memory was 29.3 MB in the beginning and 25.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 14.3 GB. [2020-10-20 05:50:10,838 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66 ms. Allocated memory is still 33.6 MB. Free memory was 10.7 MB in the beginning and 10.6 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 629.04 ms. Allocated memory was 35.1 MB in the beginning and 44.0 MB in the end (delta: 8.9 MB). Free memory was 14.9 MB in the beginning and 15.0 MB in the end (delta: -100.2 kB). Peak memory consumption was 14.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 72.74 ms. Allocated memory was 44.0 MB in the beginning and 46.1 MB in the end (delta: 2.1 MB). Free memory was 15.0 MB in the beginning and 26.3 MB in the end (delta: -11.4 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. * RCFGBuilder took 598.85 ms. Allocated memory was 46.1 MB in the beginning and 47.7 MB in the end (delta: 1.6 MB). Free memory was 26.3 MB in the beginning and 18.0 MB in the end (delta: 8.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 14.3 GB. * TraceAbstraction took 6266.23 ms. Allocated memory was 47.7 MB in the beginning and 75.5 MB in the end (delta: 27.8 MB). Free memory was 17.7 MB in the beginning and 29.3 MB in the end (delta: -11.7 MB). Peak memory consumption was 16.1 MB. Max. memory is 14.3 GB. * Witness Printer took 80.35 ms. Allocated memory is still 75.5 MB. Free memory was 29.3 MB in the beginning and 25.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 522]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 512]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 522]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 48 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.2s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 195 SDtfs, 260 SDslu, 246 SDs, 0 SdLazy, 304 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 166 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 31 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 170 NumberOfCodeBlocks, 170 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 160 ConstructedInterpolants, 13 QuantifiedInterpolants, 21586 SizeOfPredicates, 33 NumberOfNonLiveVariables, 812 ConjunctsInSsa, 85 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 8/9 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...