./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/openbsd_cstrlcpy-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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/openbsd_cstrlcpy-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 ab78f7d39533ea56445a9c400b78ef25527bc8ae ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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/openbsd_cstrlcpy-alloca-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 ab78f7d39533ea56445a9c400b78ef25527bc8ae ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 17:57:25,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 17:57:25,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 17:57:25,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 17:57:25,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 17:57:25,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 17:57:25,802 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 17:57:25,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 17:57:25,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 17:57:25,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 17:57:25,815 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 17:57:25,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 17:57:25,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 17:57:25,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 17:57:25,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 17:57:25,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 17:57:25,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 17:57:25,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 17:57:25,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 17:57:25,838 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 17:57:25,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 17:57:25,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 17:57:25,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 17:57:25,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 17:57:25,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 17:57:25,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 17:57:25,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 17:57:25,865 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 17:57:25,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 17:57:25,868 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 17:57:25,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 17:57:25,871 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 17:57:25,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 17:57:25,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 17:57:25,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 17:57:25,878 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 17:57:25,879 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 17:57:25,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 17:57:25,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 17:57:25,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 17:57:25,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 17:57:25,883 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 17:57:25,927 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 17:57:25,927 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 17:57:25,929 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 17:57:25,929 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 17:57:25,929 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 17:57:25,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 17:57:25,930 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 17:57:25,930 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 17:57:25,930 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 17:57:25,931 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 17:57:25,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 17:57:25,931 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 17:57:25,932 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 17:57:25,932 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 17:57:25,932 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 17:57:25,932 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 17:57:25,933 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 17:57:25,933 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 17:57:25,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 17:57:25,934 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 17:57:25,934 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 17:57:25,934 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 17:57:25,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 17:57:25,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 17:57:25,935 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 17:57:25,935 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 17:57:25,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 17:57:25,936 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 17:57:25,936 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 -> ab78f7d39533ea56445a9c400b78ef25527bc8ae [2020-10-19 17:57:26,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 17:57:26,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 17:57:26,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 17:57:26,344 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 17:57:26,345 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 17:57:26,346 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cstrlcpy-alloca-1.i [2020-10-19 17:57:26,426 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09e59613d/bd41bca815ab40839a7c6810786e689b/FLAG689173d1b [2020-10-19 17:57:26,982 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 17:57:26,983 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cstrlcpy-alloca-1.i [2020-10-19 17:57:26,996 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09e59613d/bd41bca815ab40839a7c6810786e689b/FLAG689173d1b [2020-10-19 17:57:27,283 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09e59613d/bd41bca815ab40839a7c6810786e689b [2020-10-19 17:57:27,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 17:57:27,294 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 17:57:27,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 17:57:27,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 17:57:27,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 17:57:27,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 05:57:27" (1/1) ... [2020-10-19 17:57:27,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f7e27d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:27, skipping insertion in model container [2020-10-19 17:57:27,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 05:57:27" (1/1) ... [2020-10-19 17:57:27,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 17:57:27,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 17:57:27,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 17:57:27,852 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 17:57:27,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 17:57:27,958 INFO L208 MainTranslator]: Completed translation [2020-10-19 17:57:27,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:27 WrapperNode [2020-10-19 17:57:27,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 17:57:27,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 17:57:27,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 17:57:27,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 17:57:27,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:27" (1/1) ... [2020-10-19 17:57:27,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:27" (1/1) ... [2020-10-19 17:57:27,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:27" (1/1) ... [2020-10-19 17:57:27,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:27" (1/1) ... [2020-10-19 17:57:28,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:27" (1/1) ... [2020-10-19 17:57:28,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:27" (1/1) ... [2020-10-19 17:57:28,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:27" (1/1) ... [2020-10-19 17:57:28,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 17:57:28,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 17:57:28,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 17:57:28,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 17:57:28,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:27" (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 [2020-10-19 17:57:28,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 17:57:28,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 17:57:28,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-19 17:57:28,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-19 17:57:28,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-19 17:57:28,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-19 17:57:28,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-19 17:57:28,102 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrlcpy [2020-10-19 17:57:28,103 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 17:57:28,103 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 17:57:28,103 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 17:57:28,103 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 17:57:28,103 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 17:57:28,103 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 17:57:28,103 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 17:57:28,104 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 17:57:28,104 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 17:57:28,104 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 17:57:28,104 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 17:57:28,104 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 17:57:28,104 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 17:57:28,104 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 17:57:28,105 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 17:57:28,105 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 17:57:28,106 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 17:57:28,108 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-19 17:57:28,108 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-19 17:57:28,109 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-19 17:57:28,109 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-19 17:57:28,109 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-19 17:57:28,109 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 17:57:28,109 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 17:57:28,109 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 17:57:28,109 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 17:57:28,110 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 17:57:28,110 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 17:57:28,110 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 17:57:28,110 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 17:57:28,110 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 17:57:28,110 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 17:57:28,111 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 17:57:28,111 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 17:57:28,111 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 17:57:28,111 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 17:57:28,111 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 17:57:28,111 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 17:57:28,111 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 17:57:28,112 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 17:57:28,112 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 17:57:28,112 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 17:57:28,112 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 17:57:28,112 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 17:57:28,112 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 17:57:28,113 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 17:57:28,113 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 17:57:28,113 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 17:57:28,113 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 17:57:28,114 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 17:57:28,114 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 17:57:28,114 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 17:57:28,121 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 17:57:28,121 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 17:57:28,121 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 17:57:28,121 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 17:57:28,121 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 17:57:28,121 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 17:57:28,122 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 17:57:28,122 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 17:57:28,122 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 17:57:28,122 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 17:57:28,122 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 17:57:28,123 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 17:57:28,123 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 17:57:28,123 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 17:57:28,123 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 17:57:28,124 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 17:57:28,124 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 17:57:28,124 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 17:57:28,125 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 17:57:28,125 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 17:57:28,125 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 17:57:28,126 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 17:57:28,126 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 17:57:28,126 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 17:57:28,126 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 17:57:28,126 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 17:57:28,127 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 17:57:28,127 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 17:57:28,127 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 17:57:28,127 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 17:57:28,127 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 17:57:28,127 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 17:57:28,127 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 17:57:28,128 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 17:57:28,128 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 17:57:28,128 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 17:57:28,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 17:57:28,128 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 17:57:28,128 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 17:57:28,128 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 17:57:28,129 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 17:57:28,129 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 17:57:28,129 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 17:57:28,129 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 17:57:28,129 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 17:57:28,129 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 17:57:28,129 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 17:57:28,129 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 17:57:28,129 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 17:57:28,130 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 17:57:28,130 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 17:57:28,130 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 17:57:28,130 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 17:57:28,130 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 17:57:28,130 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 17:57:28,130 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 17:57:28,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 17:57:28,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-19 17:57:28,131 INFO L130 BoogieDeclarations]: Found specification of procedure cstrlcpy [2020-10-19 17:57:28,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 17:57:28,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 17:57:28,132 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 17:57:28,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 17:57:28,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 17:57:28,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 17:57:28,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 17:57:28,740 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 17:57:28,741 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-19 17:57:28,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 05:57:28 BoogieIcfgContainer [2020-10-19 17:57:28,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 17:57:28,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 17:57:28,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 17:57:28,750 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 17:57:28,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 05:57:27" (1/3) ... [2020-10-19 17:57:28,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f749a16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 05:57:28, skipping insertion in model container [2020-10-19 17:57:28,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:57:27" (2/3) ... [2020-10-19 17:57:28,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f749a16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 05:57:28, skipping insertion in model container [2020-10-19 17:57:28,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 05:57:28" (3/3) ... [2020-10-19 17:57:28,756 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cstrlcpy-alloca-1.i [2020-10-19 17:57:28,771 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 17:57:28,780 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2020-10-19 17:57:28,797 INFO L253 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-10-19 17:57:28,821 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 17:57:28,821 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 17:57:28,821 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 17:57:28,822 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 17:57:28,822 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 17:57:28,822 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 17:57:28,822 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 17:57:28,822 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 17:57:28,845 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-10-19 17:57:28,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 17:57:28,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:28,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:28,857 INFO L429 AbstractCegarLoop]: === Iteration 1 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:28,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:28,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1313588107, now seen corresponding path program 1 times [2020-10-19 17:57:28,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:28,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288748394] [2020-10-19 17:57:28,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:29,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:29,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:29,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288748394] [2020-10-19 17:57:29,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:29,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 17:57:29,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966659317] [2020-10-19 17:57:29,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 17:57:29,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:29,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 17:57:29,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-19 17:57:29,131 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 5 states. [2020-10-19 17:57:29,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:29,395 INFO L93 Difference]: Finished difference Result 80 states and 92 transitions. [2020-10-19 17:57:29,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 17:57:29,397 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-19 17:57:29,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:29,410 INFO L225 Difference]: With dead ends: 80 [2020-10-19 17:57:29,411 INFO L226 Difference]: Without dead ends: 76 [2020-10-19 17:57:29,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-19 17:57:29,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-19 17:57:29,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 59. [2020-10-19 17:57:29,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-19 17:57:29,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2020-10-19 17:57:29,468 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 11 [2020-10-19 17:57:29,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:29,469 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2020-10-19 17:57:29,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 17:57:29,470 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2020-10-19 17:57:29,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 17:57:29,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:29,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:29,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 17:57:29,472 INFO L429 AbstractCegarLoop]: === Iteration 2 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:29,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:29,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1311741065, now seen corresponding path program 1 times [2020-10-19 17:57:29,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:29,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544450129] [2020-10-19 17:57:29,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:29,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:29,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:29,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544450129] [2020-10-19 17:57:29,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:29,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 17:57:29,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875307387] [2020-10-19 17:57:29,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 17:57:29,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:29,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 17:57:29,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 17:57:29,551 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand 4 states. [2020-10-19 17:57:29,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:29,693 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2020-10-19 17:57:29,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 17:57:29,694 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-19 17:57:29,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:29,695 INFO L225 Difference]: With dead ends: 57 [2020-10-19 17:57:29,696 INFO L226 Difference]: Without dead ends: 57 [2020-10-19 17:57:29,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 17:57:29,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-19 17:57:29,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-19 17:57:29,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-19 17:57:29,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2020-10-19 17:57:29,706 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 11 [2020-10-19 17:57:29,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:29,706 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2020-10-19 17:57:29,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 17:57:29,707 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2020-10-19 17:57:29,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 17:57:29,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:29,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:29,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 17:57:29,709 INFO L429 AbstractCegarLoop]: === Iteration 3 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:29,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:29,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1311741064, now seen corresponding path program 1 times [2020-10-19 17:57:29,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:29,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480460666] [2020-10-19 17:57:29,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:29,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:29,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:29,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:29,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:29,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480460666] [2020-10-19 17:57:29,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:29,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 17:57:29,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583224575] [2020-10-19 17:57:29,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 17:57:29,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:29,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 17:57:29,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 17:57:29,801 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand 5 states. [2020-10-19 17:57:30,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:30,000 INFO L93 Difference]: Finished difference Result 77 states and 89 transitions. [2020-10-19 17:57:30,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 17:57:30,001 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-19 17:57:30,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:30,003 INFO L225 Difference]: With dead ends: 77 [2020-10-19 17:57:30,003 INFO L226 Difference]: Without dead ends: 77 [2020-10-19 17:57:30,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-19 17:57:30,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-19 17:57:30,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 59. [2020-10-19 17:57:30,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-19 17:57:30,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2020-10-19 17:57:30,012 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 11 [2020-10-19 17:57:30,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:30,012 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2020-10-19 17:57:30,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 17:57:30,013 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2020-10-19 17:57:30,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-19 17:57:30,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:30,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:30,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 17:57:30,015 INFO L429 AbstractCegarLoop]: === Iteration 4 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:30,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:30,018 INFO L82 PathProgramCache]: Analyzing trace with hash 362165772, now seen corresponding path program 1 times [2020-10-19 17:57:30,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:30,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419865828] [2020-10-19 17:57:30,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:30,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:30,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:30,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:30,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419865828] [2020-10-19 17:57:30,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:30,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 17:57:30,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116365464] [2020-10-19 17:57:30,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 17:57:30,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:30,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 17:57:30,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 17:57:30,087 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 4 states. [2020-10-19 17:57:30,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:30,197 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2020-10-19 17:57:30,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 17:57:30,198 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-19 17:57:30,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:30,199 INFO L225 Difference]: With dead ends: 57 [2020-10-19 17:57:30,199 INFO L226 Difference]: Without dead ends: 57 [2020-10-19 17:57:30,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 17:57:30,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-19 17:57:30,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-19 17:57:30,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-19 17:57:30,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2020-10-19 17:57:30,206 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 13 [2020-10-19 17:57:30,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:30,207 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2020-10-19 17:57:30,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 17:57:30,207 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2020-10-19 17:57:30,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-19 17:57:30,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:30,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:30,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 17:57:30,209 INFO L429 AbstractCegarLoop]: === Iteration 5 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:30,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:30,209 INFO L82 PathProgramCache]: Analyzing trace with hash 362165773, now seen corresponding path program 1 times [2020-10-19 17:57:30,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:30,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546920742] [2020-10-19 17:57:30,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:30,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:30,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:30,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546920742] [2020-10-19 17:57:30,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:30,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 17:57:30,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991688232] [2020-10-19 17:57:30,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 17:57:30,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:30,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 17:57:30,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-19 17:57:30,281 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand 5 states. [2020-10-19 17:57:30,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:30,400 INFO L93 Difference]: Finished difference Result 56 states and 67 transitions. [2020-10-19 17:57:30,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 17:57:30,401 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-19 17:57:30,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:30,402 INFO L225 Difference]: With dead ends: 56 [2020-10-19 17:57:30,402 INFO L226 Difference]: Without dead ends: 56 [2020-10-19 17:57:30,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-19 17:57:30,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-19 17:57:30,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-19 17:57:30,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-19 17:57:30,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2020-10-19 17:57:30,409 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 13 [2020-10-19 17:57:30,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:30,409 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2020-10-19 17:57:30,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 17:57:30,410 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2020-10-19 17:57:30,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-19 17:57:30,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:30,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:30,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 17:57:30,412 INFO L429 AbstractCegarLoop]: === Iteration 6 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:30,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:30,412 INFO L82 PathProgramCache]: Analyzing trace with hash 362165826, now seen corresponding path program 1 times [2020-10-19 17:57:30,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:30,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370730977] [2020-10-19 17:57:30,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:30,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:30,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:30,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370730977] [2020-10-19 17:57:30,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:30,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 17:57:30,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500553205] [2020-10-19 17:57:30,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 17:57:30,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:30,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 17:57:30,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-19 17:57:30,484 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand 5 states. [2020-10-19 17:57:30,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:30,614 INFO L93 Difference]: Finished difference Result 75 states and 88 transitions. [2020-10-19 17:57:30,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 17:57:30,615 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-19 17:57:30,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:30,616 INFO L225 Difference]: With dead ends: 75 [2020-10-19 17:57:30,616 INFO L226 Difference]: Without dead ends: 75 [2020-10-19 17:57:30,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-19 17:57:30,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-19 17:57:30,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 67. [2020-10-19 17:57:30,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-19 17:57:30,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 81 transitions. [2020-10-19 17:57:30,633 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 81 transitions. Word has length 13 [2020-10-19 17:57:30,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:30,633 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 81 transitions. [2020-10-19 17:57:30,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 17:57:30,639 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 81 transitions. [2020-10-19 17:57:30,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-19 17:57:30,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:30,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:30,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 17:57:30,640 INFO L429 AbstractCegarLoop]: === Iteration 7 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:30,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:30,641 INFO L82 PathProgramCache]: Analyzing trace with hash 419424128, now seen corresponding path program 1 times [2020-10-19 17:57:30,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:30,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491830876] [2020-10-19 17:57:30,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:30,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:30,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:30,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:30,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491830876] [2020-10-19 17:57:30,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:30,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 17:57:30,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948382838] [2020-10-19 17:57:30,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 17:57:30,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:30,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 17:57:30,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-19 17:57:30,762 INFO L87 Difference]: Start difference. First operand 67 states and 81 transitions. Second operand 6 states. [2020-10-19 17:57:30,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:30,932 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2020-10-19 17:57:30,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 17:57:30,933 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-19 17:57:30,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:30,934 INFO L225 Difference]: With dead ends: 78 [2020-10-19 17:57:30,934 INFO L226 Difference]: Without dead ends: 78 [2020-10-19 17:57:30,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-19 17:57:30,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-19 17:57:30,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 69. [2020-10-19 17:57:30,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-19 17:57:30,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 84 transitions. [2020-10-19 17:57:30,941 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 84 transitions. Word has length 13 [2020-10-19 17:57:30,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:30,942 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 84 transitions. [2020-10-19 17:57:30,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 17:57:30,942 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 84 transitions. [2020-10-19 17:57:30,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 17:57:30,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:30,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:30,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 17:57:30,944 INFO L429 AbstractCegarLoop]: === Iteration 8 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:30,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:30,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1657762862, now seen corresponding path program 1 times [2020-10-19 17:57:30,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:30,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594654594] [2020-10-19 17:57:30,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:31,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:31,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:31,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594654594] [2020-10-19 17:57:31,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:31,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 17:57:31,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124013505] [2020-10-19 17:57:31,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 17:57:31,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:31,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 17:57:31,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-19 17:57:31,015 INFO L87 Difference]: Start difference. First operand 69 states and 84 transitions. Second operand 5 states. [2020-10-19 17:57:31,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:31,132 INFO L93 Difference]: Finished difference Result 68 states and 83 transitions. [2020-10-19 17:57:31,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 17:57:31,133 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-19 17:57:31,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:31,134 INFO L225 Difference]: With dead ends: 68 [2020-10-19 17:57:31,135 INFO L226 Difference]: Without dead ends: 68 [2020-10-19 17:57:31,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-19 17:57:31,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-19 17:57:31,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-19 17:57:31,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-19 17:57:31,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 83 transitions. [2020-10-19 17:57:31,140 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 83 transitions. Word has length 14 [2020-10-19 17:57:31,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:31,141 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 83 transitions. [2020-10-19 17:57:31,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 17:57:31,141 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 83 transitions. [2020-10-19 17:57:31,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 17:57:31,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:31,143 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:31,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 17:57:31,143 INFO L429 AbstractCegarLoop]: === Iteration 9 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:31,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:31,144 INFO L82 PathProgramCache]: Analyzing trace with hash 877584251, now seen corresponding path program 1 times [2020-10-19 17:57:31,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:31,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541213655] [2020-10-19 17:57:31,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:31,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:31,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:31,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541213655] [2020-10-19 17:57:31,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089244022] [2020-10-19 17:57:31,220 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 [2020-10-19 17:57:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:31,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 17:57:31,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:57:31,435 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:57:31,436 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 25 [2020-10-19 17:57:31,437 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:57:31,469 INFO L625 ElimStorePlain]: treesize reduction 10, result has 67.7 percent of original size [2020-10-19 17:57:31,472 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:57:31,472 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:12 [2020-10-19 17:57:31,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:31,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:57:31,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2020-10-19 17:57:31,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496973954] [2020-10-19 17:57:31,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 17:57:31,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:31,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 17:57:31,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-19 17:57:31,526 INFO L87 Difference]: Start difference. First operand 68 states and 83 transitions. Second operand 7 states. [2020-10-19 17:57:31,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:31,742 INFO L93 Difference]: Finished difference Result 87 states and 103 transitions. [2020-10-19 17:57:31,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 17:57:31,743 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-19 17:57:31,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:31,744 INFO L225 Difference]: With dead ends: 87 [2020-10-19 17:57:31,744 INFO L226 Difference]: Without dead ends: 87 [2020-10-19 17:57:31,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-19 17:57:31,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-19 17:57:31,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 63. [2020-10-19 17:57:31,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-19 17:57:31,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 75 transitions. [2020-10-19 17:57:31,756 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 75 transitions. Word has length 15 [2020-10-19 17:57:31,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:31,756 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 75 transitions. [2020-10-19 17:57:31,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 17:57:31,757 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2020-10-19 17:57:31,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 17:57:31,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:31,761 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:31,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-10-19 17:57:31,971 INFO L429 AbstractCegarLoop]: === Iteration 10 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:31,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:31,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1071221763, now seen corresponding path program 1 times [2020-10-19 17:57:31,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:31,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73139541] [2020-10-19 17:57:31,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:32,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:32,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:32,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73139541] [2020-10-19 17:57:32,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898933209] [2020-10-19 17:57:32,050 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 [2020-10-19 17:57:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:32,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-19 17:57:32,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:57:32,149 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_23|], 1=[|v_#valid_31|]} [2020-10-19 17:57:32,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 17:57:32,155 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 9 treesize of output 11 [2020-10-19 17:57:32,156 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:57:32,164 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:57:32,172 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 [2020-10-19 17:57:32,174 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 17:57:32,181 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:57:32,183 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:57:32,184 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:21, output treesize:9 [2020-10-19 17:57:32,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:32,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:57:32,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2020-10-19 17:57:32,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698785817] [2020-10-19 17:57:32,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 17:57:32,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:32,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 17:57:32,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-19 17:57:32,213 INFO L87 Difference]: Start difference. First operand 63 states and 75 transitions. Second operand 8 states. [2020-10-19 17:57:32,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:32,465 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2020-10-19 17:57:32,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 17:57:32,465 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-10-19 17:57:32,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:32,466 INFO L225 Difference]: With dead ends: 70 [2020-10-19 17:57:32,466 INFO L226 Difference]: Without dead ends: 70 [2020-10-19 17:57:32,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-19 17:57:32,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-19 17:57:32,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 60. [2020-10-19 17:57:32,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-19 17:57:32,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2020-10-19 17:57:32,471 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 17 [2020-10-19 17:57:32,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:32,471 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2020-10-19 17:57:32,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 17:57:32,471 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2020-10-19 17:57:32,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 17:57:32,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:32,472 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] [2020-10-19 17:57:32,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-19 17:57:32,682 INFO L429 AbstractCegarLoop]: === Iteration 11 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:32,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:32,682 INFO L82 PathProgramCache]: Analyzing trace with hash -528725231, now seen corresponding path program 1 times [2020-10-19 17:57:32,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:32,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296215433] [2020-10-19 17:57:32,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:32,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:32,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:32,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296215433] [2020-10-19 17:57:32,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:32,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 17:57:32,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49657432] [2020-10-19 17:57:32,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 17:57:32,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:32,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 17:57:32,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 17:57:32,732 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand 6 states. [2020-10-19 17:57:32,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:32,882 INFO L93 Difference]: Finished difference Result 59 states and 70 transitions. [2020-10-19 17:57:32,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 17:57:32,883 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-19 17:57:32,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:32,884 INFO L225 Difference]: With dead ends: 59 [2020-10-19 17:57:32,884 INFO L226 Difference]: Without dead ends: 59 [2020-10-19 17:57:32,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-19 17:57:32,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-19 17:57:32,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-19 17:57:32,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-19 17:57:32,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2020-10-19 17:57:32,891 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 20 [2020-10-19 17:57:32,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:32,891 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2020-10-19 17:57:32,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 17:57:32,893 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2020-10-19 17:57:32,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 17:57:32,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:32,894 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] [2020-10-19 17:57:32,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-19 17:57:32,894 INFO L429 AbstractCegarLoop]: === Iteration 12 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:32,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:32,894 INFO L82 PathProgramCache]: Analyzing trace with hash -528725230, now seen corresponding path program 1 times [2020-10-19 17:57:32,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:32,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441889727] [2020-10-19 17:57:32,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:32,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:32,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:32,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441889727] [2020-10-19 17:57:32,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:32,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 17:57:32,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324560470] [2020-10-19 17:57:32,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 17:57:32,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:32,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 17:57:32,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 17:57:32,972 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 6 states. [2020-10-19 17:57:33,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:33,212 INFO L93 Difference]: Finished difference Result 89 states and 104 transitions. [2020-10-19 17:57:33,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 17:57:33,212 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-19 17:57:33,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:33,213 INFO L225 Difference]: With dead ends: 89 [2020-10-19 17:57:33,213 INFO L226 Difference]: Without dead ends: 89 [2020-10-19 17:57:33,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-19 17:57:33,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-19 17:57:33,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 78. [2020-10-19 17:57:33,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-19 17:57:33,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 101 transitions. [2020-10-19 17:57:33,220 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 101 transitions. Word has length 20 [2020-10-19 17:57:33,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:33,222 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 101 transitions. [2020-10-19 17:57:33,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 17:57:33,222 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 101 transitions. [2020-10-19 17:57:33,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 17:57:33,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:33,229 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] [2020-10-19 17:57:33,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-19 17:57:33,230 INFO L429 AbstractCegarLoop]: === Iteration 13 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:33,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:33,230 INFO L82 PathProgramCache]: Analyzing trace with hash -529524558, now seen corresponding path program 1 times [2020-10-19 17:57:33,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:33,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185287031] [2020-10-19 17:57:33,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:33,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:33,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:33,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:33,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185287031] [2020-10-19 17:57:33,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:33,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 17:57:33,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929460588] [2020-10-19 17:57:33,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 17:57:33,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:33,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 17:57:33,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 17:57:33,321 INFO L87 Difference]: Start difference. First operand 78 states and 101 transitions. Second operand 7 states. [2020-10-19 17:57:33,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:33,500 INFO L93 Difference]: Finished difference Result 77 states and 99 transitions. [2020-10-19 17:57:33,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 17:57:33,501 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-19 17:57:33,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:33,504 INFO L225 Difference]: With dead ends: 77 [2020-10-19 17:57:33,506 INFO L226 Difference]: Without dead ends: 77 [2020-10-19 17:57:33,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-19 17:57:33,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-19 17:57:33,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-10-19 17:57:33,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-19 17:57:33,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 99 transitions. [2020-10-19 17:57:33,511 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 99 transitions. Word has length 20 [2020-10-19 17:57:33,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:33,512 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 99 transitions. [2020-10-19 17:57:33,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 17:57:33,512 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 99 transitions. [2020-10-19 17:57:33,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 17:57:33,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:33,516 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] [2020-10-19 17:57:33,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-19 17:57:33,516 INFO L429 AbstractCegarLoop]: === Iteration 14 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:33,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:33,517 INFO L82 PathProgramCache]: Analyzing trace with hash -529524557, now seen corresponding path program 1 times [2020-10-19 17:57:33,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:33,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716309140] [2020-10-19 17:57:33,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:33,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:33,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:33,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:33,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716309140] [2020-10-19 17:57:33,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:33,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 17:57:33,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920111135] [2020-10-19 17:57:33,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 17:57:33,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:33,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 17:57:33,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-19 17:57:33,657 INFO L87 Difference]: Start difference. First operand 77 states and 99 transitions. Second operand 9 states. [2020-10-19 17:57:33,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:33,959 INFO L93 Difference]: Finished difference Result 104 states and 137 transitions. [2020-10-19 17:57:33,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 17:57:33,960 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-10-19 17:57:33,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:33,961 INFO L225 Difference]: With dead ends: 104 [2020-10-19 17:57:33,962 INFO L226 Difference]: Without dead ends: 104 [2020-10-19 17:57:33,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-19 17:57:33,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-19 17:57:33,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 83. [2020-10-19 17:57:33,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-19 17:57:33,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 107 transitions. [2020-10-19 17:57:33,967 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 107 transitions. Word has length 20 [2020-10-19 17:57:33,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:33,967 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 107 transitions. [2020-10-19 17:57:33,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 17:57:33,967 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 107 transitions. [2020-10-19 17:57:33,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 17:57:33,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:33,968 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] [2020-10-19 17:57:33,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-19 17:57:33,969 INFO L429 AbstractCegarLoop]: === Iteration 15 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:33,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:33,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1115531244, now seen corresponding path program 1 times [2020-10-19 17:57:33,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:33,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829070579] [2020-10-19 17:57:33,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:33,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:34,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:34,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:34,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829070579] [2020-10-19 17:57:34,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:34,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 17:57:34,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538985418] [2020-10-19 17:57:34,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 17:57:34,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:34,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 17:57:34,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-19 17:57:34,052 INFO L87 Difference]: Start difference. First operand 83 states and 107 transitions. Second operand 8 states. [2020-10-19 17:57:34,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:34,315 INFO L93 Difference]: Finished difference Result 103 states and 135 transitions. [2020-10-19 17:57:34,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 17:57:34,315 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-10-19 17:57:34,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:34,317 INFO L225 Difference]: With dead ends: 103 [2020-10-19 17:57:34,317 INFO L226 Difference]: Without dead ends: 103 [2020-10-19 17:57:34,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-19 17:57:34,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-19 17:57:34,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 89. [2020-10-19 17:57:34,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-19 17:57:34,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 117 transitions. [2020-10-19 17:57:34,323 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 117 transitions. Word has length 20 [2020-10-19 17:57:34,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:34,323 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 117 transitions. [2020-10-19 17:57:34,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 17:57:34,323 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 117 transitions. [2020-10-19 17:57:34,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 17:57:34,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:34,324 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:34,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-19 17:57:34,325 INFO L429 AbstractCegarLoop]: === Iteration 16 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:34,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:34,325 INFO L82 PathProgramCache]: Analyzing trace with hash 764607877, now seen corresponding path program 1 times [2020-10-19 17:57:34,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:34,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328072282] [2020-10-19 17:57:34,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:34,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:34,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:34,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:34,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328072282] [2020-10-19 17:57:34,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:34,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 17:57:34,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911315507] [2020-10-19 17:57:34,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 17:57:34,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:34,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 17:57:34,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 17:57:34,386 INFO L87 Difference]: Start difference. First operand 89 states and 117 transitions. Second operand 7 states. [2020-10-19 17:57:34,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:34,567 INFO L93 Difference]: Finished difference Result 88 states and 115 transitions. [2020-10-19 17:57:34,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 17:57:34,567 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-19 17:57:34,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:34,569 INFO L225 Difference]: With dead ends: 88 [2020-10-19 17:57:34,570 INFO L226 Difference]: Without dead ends: 88 [2020-10-19 17:57:34,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-19 17:57:34,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-19 17:57:34,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-10-19 17:57:34,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-19 17:57:34,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 115 transitions. [2020-10-19 17:57:34,579 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 115 transitions. Word has length 21 [2020-10-19 17:57:34,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:34,579 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 115 transitions. [2020-10-19 17:57:34,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 17:57:34,580 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 115 transitions. [2020-10-19 17:57:34,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 17:57:34,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:34,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:34,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-19 17:57:34,584 INFO L429 AbstractCegarLoop]: === Iteration 17 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:34,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:34,585 INFO L82 PathProgramCache]: Analyzing trace with hash 764607878, now seen corresponding path program 1 times [2020-10-19 17:57:34,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:34,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584975778] [2020-10-19 17:57:34,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:34,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:34,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:34,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:34,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584975778] [2020-10-19 17:57:34,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:34,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 17:57:34,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631944652] [2020-10-19 17:57:34,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 17:57:34,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:34,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 17:57:34,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-19 17:57:34,724 INFO L87 Difference]: Start difference. First operand 88 states and 115 transitions. Second operand 9 states. [2020-10-19 17:57:35,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:35,028 INFO L93 Difference]: Finished difference Result 106 states and 139 transitions. [2020-10-19 17:57:35,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 17:57:35,028 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-19 17:57:35,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:35,030 INFO L225 Difference]: With dead ends: 106 [2020-10-19 17:57:35,030 INFO L226 Difference]: Without dead ends: 106 [2020-10-19 17:57:35,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-19 17:57:35,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-19 17:57:35,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 90. [2020-10-19 17:57:35,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-19 17:57:35,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 117 transitions. [2020-10-19 17:57:35,035 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 117 transitions. Word has length 21 [2020-10-19 17:57:35,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:35,035 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 117 transitions. [2020-10-19 17:57:35,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 17:57:35,036 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 117 transitions. [2020-10-19 17:57:35,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 17:57:35,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:35,037 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:35,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-19 17:57:35,037 INFO L429 AbstractCegarLoop]: === Iteration 18 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:35,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:35,038 INFO L82 PathProgramCache]: Analyzing trace with hash -221725122, now seen corresponding path program 1 times [2020-10-19 17:57:35,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:35,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225736151] [2020-10-19 17:57:35,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:35,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:35,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:35,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225736151] [2020-10-19 17:57:35,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:35,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 17:57:35,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477297984] [2020-10-19 17:57:35,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 17:57:35,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:35,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 17:57:35,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 17:57:35,089 INFO L87 Difference]: Start difference. First operand 90 states and 117 transitions. Second operand 7 states. [2020-10-19 17:57:35,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:35,249 INFO L93 Difference]: Finished difference Result 89 states and 115 transitions. [2020-10-19 17:57:35,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 17:57:35,250 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-19 17:57:35,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:35,251 INFO L225 Difference]: With dead ends: 89 [2020-10-19 17:57:35,251 INFO L226 Difference]: Without dead ends: 89 [2020-10-19 17:57:35,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-19 17:57:35,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-19 17:57:35,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-10-19 17:57:35,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-19 17:57:35,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 115 transitions. [2020-10-19 17:57:35,256 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 115 transitions. Word has length 21 [2020-10-19 17:57:35,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:35,256 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 115 transitions. [2020-10-19 17:57:35,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 17:57:35,256 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 115 transitions. [2020-10-19 17:57:35,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 17:57:35,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:35,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:35,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-19 17:57:35,257 INFO L429 AbstractCegarLoop]: === Iteration 19 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:35,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:35,258 INFO L82 PathProgramCache]: Analyzing trace with hash -221725121, now seen corresponding path program 1 times [2020-10-19 17:57:35,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:35,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183499680] [2020-10-19 17:57:35,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:35,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:35,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:35,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:35,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183499680] [2020-10-19 17:57:35,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:35,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 17:57:35,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066702570] [2020-10-19 17:57:35,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 17:57:35,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:35,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 17:57:35,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-19 17:57:35,346 INFO L87 Difference]: Start difference. First operand 89 states and 115 transitions. Second operand 9 states. [2020-10-19 17:57:35,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:35,614 INFO L93 Difference]: Finished difference Result 101 states and 129 transitions. [2020-10-19 17:57:35,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 17:57:35,614 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-19 17:57:35,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:35,615 INFO L225 Difference]: With dead ends: 101 [2020-10-19 17:57:35,615 INFO L226 Difference]: Without dead ends: 101 [2020-10-19 17:57:35,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-19 17:57:35,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-19 17:57:35,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 93. [2020-10-19 17:57:35,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-19 17:57:35,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 119 transitions. [2020-10-19 17:57:35,620 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 119 transitions. Word has length 21 [2020-10-19 17:57:35,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:35,621 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 119 transitions. [2020-10-19 17:57:35,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 17:57:35,621 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 119 transitions. [2020-10-19 17:57:35,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 17:57:35,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:35,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:35,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-19 17:57:35,623 INFO L429 AbstractCegarLoop]: === Iteration 20 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:35,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:35,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1861053024, now seen corresponding path program 1 times [2020-10-19 17:57:35,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:35,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767010891] [2020-10-19 17:57:35,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:35,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:35,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:35,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-19 17:57:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:35,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:35,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767010891] [2020-10-19 17:57:35,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:35,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 17:57:35,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107579553] [2020-10-19 17:57:35,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 17:57:35,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:35,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 17:57:35,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 17:57:35,668 INFO L87 Difference]: Start difference. First operand 93 states and 119 transitions. Second operand 5 states. [2020-10-19 17:57:35,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:35,828 INFO L93 Difference]: Finished difference Result 134 states and 166 transitions. [2020-10-19 17:57:35,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 17:57:35,829 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-19 17:57:35,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:35,830 INFO L225 Difference]: With dead ends: 134 [2020-10-19 17:57:35,830 INFO L226 Difference]: Without dead ends: 134 [2020-10-19 17:57:35,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-19 17:57:35,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-19 17:57:35,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 94. [2020-10-19 17:57:35,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-19 17:57:35,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 120 transitions. [2020-10-19 17:57:35,835 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 120 transitions. Word has length 23 [2020-10-19 17:57:35,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:35,836 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 120 transitions. [2020-10-19 17:57:35,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 17:57:35,836 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 120 transitions. [2020-10-19 17:57:35,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-19 17:57:35,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:35,837 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:35,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-19 17:57:35,837 INFO L429 AbstractCegarLoop]: === Iteration 21 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:35,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:35,837 INFO L82 PathProgramCache]: Analyzing trace with hash 246619296, now seen corresponding path program 1 times [2020-10-19 17:57:35,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:35,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135906527] [2020-10-19 17:57:35,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:35,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:35,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-19 17:57:35,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135906527] [2020-10-19 17:57:35,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:35,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 17:57:35,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262386482] [2020-10-19 17:57:35,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 17:57:35,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:35,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 17:57:35,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-19 17:57:35,930 INFO L87 Difference]: Start difference. First operand 94 states and 120 transitions. Second operand 8 states. [2020-10-19 17:57:36,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:36,167 INFO L93 Difference]: Finished difference Result 133 states and 167 transitions. [2020-10-19 17:57:36,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 17:57:36,168 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-10-19 17:57:36,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:36,169 INFO L225 Difference]: With dead ends: 133 [2020-10-19 17:57:36,169 INFO L226 Difference]: Without dead ends: 133 [2020-10-19 17:57:36,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-19 17:57:36,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-19 17:57:36,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 95. [2020-10-19 17:57:36,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-19 17:57:36,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 122 transitions. [2020-10-19 17:57:36,174 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 122 transitions. Word has length 24 [2020-10-19 17:57:36,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:36,174 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 122 transitions. [2020-10-19 17:57:36,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 17:57:36,174 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 122 transitions. [2020-10-19 17:57:36,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 17:57:36,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:36,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:36,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-19 17:57:36,176 INFO L429 AbstractCegarLoop]: === Iteration 22 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:36,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:36,176 INFO L82 PathProgramCache]: Analyzing trace with hash 152894738, now seen corresponding path program 1 times [2020-10-19 17:57:36,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:36,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344367594] [2020-10-19 17:57:36,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:36,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:36,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:36,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:36,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344367594] [2020-10-19 17:57:36,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:36,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 17:57:36,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215732870] [2020-10-19 17:57:36,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 17:57:36,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:36,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 17:57:36,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 17:57:36,262 INFO L87 Difference]: Start difference. First operand 95 states and 122 transitions. Second operand 7 states. [2020-10-19 17:57:36,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:36,501 INFO L93 Difference]: Finished difference Result 117 states and 146 transitions. [2020-10-19 17:57:36,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 17:57:36,502 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-19 17:57:36,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:36,503 INFO L225 Difference]: With dead ends: 117 [2020-10-19 17:57:36,503 INFO L226 Difference]: Without dead ends: 117 [2020-10-19 17:57:36,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-19 17:57:36,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-19 17:57:36,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 113. [2020-10-19 17:57:36,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-19 17:57:36,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 144 transitions. [2020-10-19 17:57:36,508 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 144 transitions. Word has length 25 [2020-10-19 17:57:36,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:36,509 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 144 transitions. [2020-10-19 17:57:36,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 17:57:36,509 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 144 transitions. [2020-10-19 17:57:36,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 17:57:36,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:36,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:36,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-19 17:57:36,510 INFO L429 AbstractCegarLoop]: === Iteration 23 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:36,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:36,511 INFO L82 PathProgramCache]: Analyzing trace with hash -291874421, now seen corresponding path program 1 times [2020-10-19 17:57:36,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:36,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097907742] [2020-10-19 17:57:36,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:36,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:36,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-19 17:57:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:36,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:36,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097907742] [2020-10-19 17:57:36,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:36,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 17:57:36,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350617639] [2020-10-19 17:57:36,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 17:57:36,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:36,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 17:57:36,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-19 17:57:36,609 INFO L87 Difference]: Start difference. First operand 113 states and 144 transitions. Second operand 8 states. [2020-10-19 17:57:37,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:37,241 INFO L93 Difference]: Finished difference Result 211 states and 261 transitions. [2020-10-19 17:57:37,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-19 17:57:37,242 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-10-19 17:57:37,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:37,243 INFO L225 Difference]: With dead ends: 211 [2020-10-19 17:57:37,243 INFO L226 Difference]: Without dead ends: 208 [2020-10-19 17:57:37,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-19 17:57:37,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-19 17:57:37,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 113. [2020-10-19 17:57:37,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-19 17:57:37,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 143 transitions. [2020-10-19 17:57:37,250 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 143 transitions. Word has length 25 [2020-10-19 17:57:37,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:37,250 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 143 transitions. [2020-10-19 17:57:37,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 17:57:37,250 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 143 transitions. [2020-10-19 17:57:37,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 17:57:37,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:37,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:37,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-19 17:57:37,251 INFO L429 AbstractCegarLoop]: === Iteration 24 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:37,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:37,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1841249968, now seen corresponding path program 1 times [2020-10-19 17:57:37,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:37,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104655244] [2020-10-19 17:57:37,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:37,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:37,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:37,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:37,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104655244] [2020-10-19 17:57:37,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:37,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-19 17:57:37,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076356241] [2020-10-19 17:57:37,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 17:57:37,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:37,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 17:57:37,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-19 17:57:37,357 INFO L87 Difference]: Start difference. First operand 113 states and 143 transitions. Second operand 9 states. [2020-10-19 17:57:37,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:37,655 INFO L93 Difference]: Finished difference Result 110 states and 130 transitions. [2020-10-19 17:57:37,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 17:57:37,656 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-19 17:57:37,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:37,657 INFO L225 Difference]: With dead ends: 110 [2020-10-19 17:57:37,657 INFO L226 Difference]: Without dead ends: 110 [2020-10-19 17:57:37,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-19 17:57:37,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-19 17:57:37,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 103. [2020-10-19 17:57:37,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-19 17:57:37,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 125 transitions. [2020-10-19 17:57:37,662 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 125 transitions. Word has length 25 [2020-10-19 17:57:37,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:37,662 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 125 transitions. [2020-10-19 17:57:37,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 17:57:37,662 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 125 transitions. [2020-10-19 17:57:37,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 17:57:37,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:37,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:37,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-19 17:57:37,664 INFO L429 AbstractCegarLoop]: === Iteration 25 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:37,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:37,664 INFO L82 PathProgramCache]: Analyzing trace with hash 2008948169, now seen corresponding path program 1 times [2020-10-19 17:57:37,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:37,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919634099] [2020-10-19 17:57:37,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:37,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:37,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-19 17:57:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:37,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:37,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919634099] [2020-10-19 17:57:37,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:37,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-19 17:57:37,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191078591] [2020-10-19 17:57:37,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 17:57:37,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:37,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 17:57:37,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-19 17:57:37,819 INFO L87 Difference]: Start difference. First operand 103 states and 125 transitions. Second operand 10 states. [2020-10-19 17:57:38,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:38,563 INFO L93 Difference]: Finished difference Result 187 states and 222 transitions. [2020-10-19 17:57:38,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-19 17:57:38,564 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2020-10-19 17:57:38,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:38,566 INFO L225 Difference]: With dead ends: 187 [2020-10-19 17:57:38,566 INFO L226 Difference]: Without dead ends: 184 [2020-10-19 17:57:38,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2020-10-19 17:57:38,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-19 17:57:38,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 85. [2020-10-19 17:57:38,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-19 17:57:38,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 103 transitions. [2020-10-19 17:57:38,575 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 103 transitions. Word has length 25 [2020-10-19 17:57:38,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:38,576 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 103 transitions. [2020-10-19 17:57:38,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 17:57:38,576 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 103 transitions. [2020-10-19 17:57:38,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 17:57:38,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:38,577 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:38,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-19 17:57:38,578 INFO L429 AbstractCegarLoop]: === Iteration 26 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:38,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:38,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1646515733, now seen corresponding path program 1 times [2020-10-19 17:57:38,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:38,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538935470] [2020-10-19 17:57:38,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:38,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:38,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-19 17:57:38,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538935470] [2020-10-19 17:57:38,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:38,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 17:57:38,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100535920] [2020-10-19 17:57:38,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 17:57:38,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:38,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 17:57:38,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 17:57:38,681 INFO L87 Difference]: Start difference. First operand 85 states and 103 transitions. Second operand 6 states. [2020-10-19 17:57:38,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:38,864 INFO L93 Difference]: Finished difference Result 107 states and 125 transitions. [2020-10-19 17:57:38,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 17:57:38,865 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-19 17:57:38,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:38,866 INFO L225 Difference]: With dead ends: 107 [2020-10-19 17:57:38,866 INFO L226 Difference]: Without dead ends: 107 [2020-10-19 17:57:38,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-19 17:57:38,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-19 17:57:38,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2020-10-19 17:57:38,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-19 17:57:38,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 123 transitions. [2020-10-19 17:57:38,871 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 123 transitions. Word has length 26 [2020-10-19 17:57:38,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:38,871 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 123 transitions. [2020-10-19 17:57:38,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 17:57:38,872 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 123 transitions. [2020-10-19 17:57:38,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 17:57:38,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:38,872 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:38,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-19 17:57:38,873 INFO L429 AbstractCegarLoop]: === Iteration 27 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:38,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:38,873 INFO L82 PathProgramCache]: Analyzing trace with hash -42428009, now seen corresponding path program 1 times [2020-10-19 17:57:38,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:38,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074865638] [2020-10-19 17:57:38,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:38,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:38,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:38,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-19 17:57:38,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074865638] [2020-10-19 17:57:38,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:38,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 17:57:38,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087360342] [2020-10-19 17:57:38,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 17:57:38,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:38,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 17:57:38,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-19 17:57:38,961 INFO L87 Difference]: Start difference. First operand 103 states and 123 transitions. Second operand 8 states. [2020-10-19 17:57:39,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:39,182 INFO L93 Difference]: Finished difference Result 110 states and 127 transitions. [2020-10-19 17:57:39,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 17:57:39,182 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-10-19 17:57:39,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:39,184 INFO L225 Difference]: With dead ends: 110 [2020-10-19 17:57:39,184 INFO L226 Difference]: Without dead ends: 110 [2020-10-19 17:57:39,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-19 17:57:39,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-19 17:57:39,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 85. [2020-10-19 17:57:39,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-19 17:57:39,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 102 transitions. [2020-10-19 17:57:39,189 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 102 transitions. Word has length 26 [2020-10-19 17:57:39,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:39,189 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 102 transitions. [2020-10-19 17:57:39,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 17:57:39,189 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 102 transitions. [2020-10-19 17:57:39,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 17:57:39,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:39,190 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:39,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-19 17:57:39,190 INFO L429 AbstractCegarLoop]: === Iteration 28 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:39,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:39,191 INFO L82 PathProgramCache]: Analyzing trace with hash -898957707, now seen corresponding path program 1 times [2020-10-19 17:57:39,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:39,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356929446] [2020-10-19 17:57:39,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:39,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:39,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:39,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356929446] [2020-10-19 17:57:39,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:39,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-19 17:57:39,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688623130] [2020-10-19 17:57:39,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 17:57:39,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:39,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 17:57:39,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-19 17:57:39,340 INFO L87 Difference]: Start difference. First operand 85 states and 102 transitions. Second operand 11 states. [2020-10-19 17:57:39,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:39,716 INFO L93 Difference]: Finished difference Result 137 states and 159 transitions. [2020-10-19 17:57:39,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 17:57:39,716 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-19 17:57:39,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:39,718 INFO L225 Difference]: With dead ends: 137 [2020-10-19 17:57:39,718 INFO L226 Difference]: Without dead ends: 137 [2020-10-19 17:57:39,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-19 17:57:39,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-19 17:57:39,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 126. [2020-10-19 17:57:39,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-19 17:57:39,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 150 transitions. [2020-10-19 17:57:39,724 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 150 transitions. Word has length 27 [2020-10-19 17:57:39,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:39,725 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 150 transitions. [2020-10-19 17:57:39,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 17:57:39,725 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 150 transitions. [2020-10-19 17:57:39,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 17:57:39,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:39,727 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:39,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-19 17:57:39,728 INFO L429 AbstractCegarLoop]: === Iteration 29 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:39,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:39,728 INFO L82 PathProgramCache]: Analyzing trace with hash -476255881, now seen corresponding path program 1 times [2020-10-19 17:57:39,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:39,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401629424] [2020-10-19 17:57:39,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:39,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:39,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:39,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:39,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401629424] [2020-10-19 17:57:39,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:39,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-19 17:57:39,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636134018] [2020-10-19 17:57:39,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 17:57:39,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:39,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 17:57:39,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-19 17:57:39,904 INFO L87 Difference]: Start difference. First operand 126 states and 150 transitions. Second operand 12 states. [2020-10-19 17:57:40,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:40,309 INFO L93 Difference]: Finished difference Result 189 states and 220 transitions. [2020-10-19 17:57:40,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 17:57:40,310 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-10-19 17:57:40,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:40,312 INFO L225 Difference]: With dead ends: 189 [2020-10-19 17:57:40,312 INFO L226 Difference]: Without dead ends: 189 [2020-10-19 17:57:40,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2020-10-19 17:57:40,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-19 17:57:40,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 128. [2020-10-19 17:57:40,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-19 17:57:40,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 154 transitions. [2020-10-19 17:57:40,318 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 154 transitions. Word has length 27 [2020-10-19 17:57:40,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:40,319 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 154 transitions. [2020-10-19 17:57:40,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 17:57:40,319 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 154 transitions. [2020-10-19 17:57:40,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-19 17:57:40,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:40,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:40,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-19 17:57:40,321 INFO L429 AbstractCegarLoop]: === Iteration 30 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:40,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:40,321 INFO L82 PathProgramCache]: Analyzing trace with hash 953203027, now seen corresponding path program 1 times [2020-10-19 17:57:40,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:40,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770818496] [2020-10-19 17:57:40,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:40,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:40,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:40,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770818496] [2020-10-19 17:57:40,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160917705] [2020-10-19 17:57:40,423 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 [2020-10-19 17:57:40,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:40,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-19 17:57:40,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:57:40,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:40,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:57:40,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2020-10-19 17:57:40,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413157852] [2020-10-19 17:57:40,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-19 17:57:40,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:40,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-19 17:57:40,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-10-19 17:57:40,623 INFO L87 Difference]: Start difference. First operand 128 states and 154 transitions. Second operand 16 states. [2020-10-19 17:57:41,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:41,304 INFO L93 Difference]: Finished difference Result 158 states and 189 transitions. [2020-10-19 17:57:41,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 17:57:41,304 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-19 17:57:41,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:41,306 INFO L225 Difference]: With dead ends: 158 [2020-10-19 17:57:41,306 INFO L226 Difference]: Without dead ends: 158 [2020-10-19 17:57:41,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2020-10-19 17:57:41,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-19 17:57:41,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 140. [2020-10-19 17:57:41,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-19 17:57:41,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 172 transitions. [2020-10-19 17:57:41,318 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 172 transitions. Word has length 29 [2020-10-19 17:57:41,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:41,319 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 172 transitions. [2020-10-19 17:57:41,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-19 17:57:41,319 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 172 transitions. [2020-10-19 17:57:41,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-19 17:57:41,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:41,320 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:41,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:57:41,536 INFO L429 AbstractCegarLoop]: === Iteration 31 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:41,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:41,536 INFO L82 PathProgramCache]: Analyzing trace with hash 953237848, now seen corresponding path program 1 times [2020-10-19 17:57:41,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:41,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334740961] [2020-10-19 17:57:41,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:41,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:41,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:41,710 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:41,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334740961] [2020-10-19 17:57:41,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739520655] [2020-10-19 17:57:41,711 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 [2020-10-19 17:57:41,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:41,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-19 17:57:41,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:57:41,865 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:41,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:57:41,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 12 [2020-10-19 17:57:41,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143057175] [2020-10-19 17:57:41,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 17:57:41,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:41,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 17:57:41,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-19 17:57:41,867 INFO L87 Difference]: Start difference. First operand 140 states and 172 transitions. Second operand 12 states. [2020-10-19 17:57:42,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:42,357 INFO L93 Difference]: Finished difference Result 201 states and 241 transitions. [2020-10-19 17:57:42,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 17:57:42,358 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2020-10-19 17:57:42,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:42,360 INFO L225 Difference]: With dead ends: 201 [2020-10-19 17:57:42,361 INFO L226 Difference]: Without dead ends: 201 [2020-10-19 17:57:42,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-10-19 17:57:42,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-19 17:57:42,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 170. [2020-10-19 17:57:42,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-19 17:57:42,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 210 transitions. [2020-10-19 17:57:42,368 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 210 transitions. Word has length 29 [2020-10-19 17:57:42,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:42,369 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 210 transitions. [2020-10-19 17:57:42,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 17:57:42,369 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 210 transitions. [2020-10-19 17:57:42,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-19 17:57:42,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:42,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:42,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:57:42,584 INFO L429 AbstractCegarLoop]: === Iteration 32 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:42,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:42,585 INFO L82 PathProgramCache]: Analyzing trace with hash 508433868, now seen corresponding path program 1 times [2020-10-19 17:57:42,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:42,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916477008] [2020-10-19 17:57:42,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:42,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:42,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:42,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:42,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-19 17:57:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:42,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:57:42,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916477008] [2020-10-19 17:57:42,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:42,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 17:57:42,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137281634] [2020-10-19 17:57:42,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 17:57:42,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:42,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 17:57:42,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-19 17:57:42,687 INFO L87 Difference]: Start difference. First operand 170 states and 210 transitions. Second operand 7 states. [2020-10-19 17:57:42,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:42,982 INFO L93 Difference]: Finished difference Result 196 states and 234 transitions. [2020-10-19 17:57:42,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 17:57:42,983 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-10-19 17:57:42,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:42,984 INFO L225 Difference]: With dead ends: 196 [2020-10-19 17:57:42,985 INFO L226 Difference]: Without dead ends: 195 [2020-10-19 17:57:42,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-19 17:57:42,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-19 17:57:42,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 170. [2020-10-19 17:57:42,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-19 17:57:42,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 206 transitions. [2020-10-19 17:57:42,994 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 206 transitions. Word has length 29 [2020-10-19 17:57:42,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:42,994 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 206 transitions. [2020-10-19 17:57:42,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 17:57:42,995 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 206 transitions. [2020-10-19 17:57:42,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 17:57:42,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:42,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:42,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-19 17:57:42,996 INFO L429 AbstractCegarLoop]: === Iteration 33 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:42,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:42,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1770840197, now seen corresponding path program 1 times [2020-10-19 17:57:42,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:42,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368430382] [2020-10-19 17:57:42,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:43,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:43,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-19 17:57:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:43,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:43,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368430382] [2020-10-19 17:57:43,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:57:43,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 17:57:43,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643894086] [2020-10-19 17:57:43,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 17:57:43,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:43,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 17:57:43,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-19 17:57:43,073 INFO L87 Difference]: Start difference. First operand 170 states and 206 transitions. Second operand 6 states. [2020-10-19 17:57:43,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:43,225 INFO L93 Difference]: Finished difference Result 186 states and 223 transitions. [2020-10-19 17:57:43,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 17:57:43,226 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-19 17:57:43,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:43,228 INFO L225 Difference]: With dead ends: 186 [2020-10-19 17:57:43,228 INFO L226 Difference]: Without dead ends: 133 [2020-10-19 17:57:43,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-19 17:57:43,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-19 17:57:43,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 108. [2020-10-19 17:57:43,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-19 17:57:43,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 127 transitions. [2020-10-19 17:57:43,233 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 127 transitions. Word has length 30 [2020-10-19 17:57:43,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:43,233 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 127 transitions. [2020-10-19 17:57:43,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 17:57:43,233 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 127 transitions. [2020-10-19 17:57:43,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-19 17:57:43,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:43,234 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:43,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-19 17:57:43,235 INFO L429 AbstractCegarLoop]: === Iteration 34 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:43,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:43,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1800341638, now seen corresponding path program 1 times [2020-10-19 17:57:43,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:43,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144338256] [2020-10-19 17:57:43,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:43,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:43,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:43,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144338256] [2020-10-19 17:57:43,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688869305] [2020-10-19 17:57:43,328 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 [2020-10-19 17:57:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:43,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-19 17:57:43,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:57:43,451 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:57:43,451 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 25 [2020-10-19 17:57:43,452 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:57:43,476 INFO L625 ElimStorePlain]: treesize reduction 10, result has 67.7 percent of original size [2020-10-19 17:57:43,477 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:57:43,478 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:12 [2020-10-19 17:57:43,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:43,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:57:43,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-19 17:57:43,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064974432] [2020-10-19 17:57:43,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-19 17:57:43,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:43,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-19 17:57:43,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-10-19 17:57:43,634 INFO L87 Difference]: Start difference. First operand 108 states and 127 transitions. Second operand 16 states. [2020-10-19 17:57:44,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:44,368 INFO L93 Difference]: Finished difference Result 153 states and 178 transitions. [2020-10-19 17:57:44,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 17:57:44,369 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 31 [2020-10-19 17:57:44,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:44,370 INFO L225 Difference]: With dead ends: 153 [2020-10-19 17:57:44,370 INFO L226 Difference]: Without dead ends: 153 [2020-10-19 17:57:44,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2020-10-19 17:57:44,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-19 17:57:44,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 131. [2020-10-19 17:57:44,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-19 17:57:44,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 153 transitions. [2020-10-19 17:57:44,375 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 153 transitions. Word has length 31 [2020-10-19 17:57:44,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:44,375 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 153 transitions. [2020-10-19 17:57:44,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-19 17:57:44,375 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 153 transitions. [2020-10-19 17:57:44,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-19 17:57:44,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:44,376 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:44,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-10-19 17:57:44,589 INFO L429 AbstractCegarLoop]: === Iteration 35 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:44,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:44,590 INFO L82 PathProgramCache]: Analyzing trace with hash -416327131, now seen corresponding path program 1 times [2020-10-19 17:57:44,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:44,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250122042] [2020-10-19 17:57:44,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:44,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:44,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-19 17:57:44,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250122042] [2020-10-19 17:57:44,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277534836] [2020-10-19 17:57:44,686 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 [2020-10-19 17:57:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:44,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-19 17:57:44,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:57:44,813 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 17:57:44,813 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:57:44,816 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:57:44,816 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:57:44,816 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-10-19 17:57:44,877 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-10-19 17:57:44,878 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:57:44,880 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:57:44,881 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:57:44,881 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-10-19 17:57:44,903 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:57:44,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 17:57:44,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2020-10-19 17:57:44,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559583216] [2020-10-19 17:57:44,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 17:57:44,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:44,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 17:57:44,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-19 17:57:44,906 INFO L87 Difference]: Start difference. First operand 131 states and 153 transitions. Second operand 8 states. [2020-10-19 17:57:45,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:45,048 INFO L93 Difference]: Finished difference Result 168 states and 192 transitions. [2020-10-19 17:57:45,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 17:57:45,049 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-10-19 17:57:45,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:45,050 INFO L225 Difference]: With dead ends: 168 [2020-10-19 17:57:45,050 INFO L226 Difference]: Without dead ends: 158 [2020-10-19 17:57:45,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2020-10-19 17:57:45,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-19 17:57:45,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 151. [2020-10-19 17:57:45,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-19 17:57:45,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 174 transitions. [2020-10-19 17:57:45,057 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 174 transitions. Word has length 32 [2020-10-19 17:57:45,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:45,058 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 174 transitions. [2020-10-19 17:57:45,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 17:57:45,058 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 174 transitions. [2020-10-19 17:57:45,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-19 17:57:45,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:45,059 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:45,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:57:45,273 INFO L429 AbstractCegarLoop]: === Iteration 36 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:45,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:45,274 INFO L82 PathProgramCache]: Analyzing trace with hash -354287517, now seen corresponding path program 1 times [2020-10-19 17:57:45,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:45,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099749143] [2020-10-19 17:57:45,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:45,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:45,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-19 17:57:45,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099749143] [2020-10-19 17:57:45,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720409535] [2020-10-19 17:57:45,397 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 [2020-10-19 17:57:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:45,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-19 17:57:45,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:57:45,561 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2020-10-19 17:57:45,561 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:57:45,566 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:57:45,569 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 17:57:45,569 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2020-10-19 17:57:45,759 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:57:45,760 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2020-10-19 17:57:45,760 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-19 17:57:45,771 INFO L625 ElimStorePlain]: treesize reduction 8, result has 55.6 percent of original size [2020-10-19 17:57:45,773 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:57:45,773 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:24, output treesize:3 [2020-10-19 17:57:45,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:57:45,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 17:57:45,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2020-10-19 17:57:45,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457857537] [2020-10-19 17:57:45,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 17:57:45,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:45,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 17:57:45,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-19 17:57:45,794 INFO L87 Difference]: Start difference. First operand 151 states and 174 transitions. Second operand 10 states. [2020-10-19 17:57:46,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:46,075 INFO L93 Difference]: Finished difference Result 157 states and 177 transitions. [2020-10-19 17:57:46,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 17:57:46,076 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-10-19 17:57:46,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:46,077 INFO L225 Difference]: With dead ends: 157 [2020-10-19 17:57:46,077 INFO L226 Difference]: Without dead ends: 147 [2020-10-19 17:57:46,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2020-10-19 17:57:46,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-19 17:57:46,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 117. [2020-10-19 17:57:46,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-19 17:57:46,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 136 transitions. [2020-10-19 17:57:46,080 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 136 transitions. Word has length 32 [2020-10-19 17:57:46,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:46,080 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 136 transitions. [2020-10-19 17:57:46,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 17:57:46,080 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 136 transitions. [2020-10-19 17:57:46,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-19 17:57:46,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:46,081 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:46,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-19 17:57:46,289 INFO L429 AbstractCegarLoop]: === Iteration 37 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:46,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:46,290 INFO L82 PathProgramCache]: Analyzing trace with hash 856692413, now seen corresponding path program 1 times [2020-10-19 17:57:46,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:46,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52238247] [2020-10-19 17:57:46,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:46,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:46,422 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:46,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52238247] [2020-10-19 17:57:46,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132993209] [2020-10-19 17:57:46,423 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 [2020-10-19 17:57:46,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:46,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 17:57:46,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:57:46,635 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-19 17:57:46,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 17:57:46,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2020-10-19 17:57:46,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922958299] [2020-10-19 17:57:46,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 17:57:46,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:46,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 17:57:46,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-19 17:57:46,637 INFO L87 Difference]: Start difference. First operand 117 states and 136 transitions. Second operand 6 states. [2020-10-19 17:57:46,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:46,672 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2020-10-19 17:57:46,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 17:57:46,673 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-10-19 17:57:46,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:46,674 INFO L225 Difference]: With dead ends: 117 [2020-10-19 17:57:46,674 INFO L226 Difference]: Without dead ends: 117 [2020-10-19 17:57:46,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-10-19 17:57:46,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-19 17:57:46,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2020-10-19 17:57:46,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-19 17:57:46,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 130 transitions. [2020-10-19 17:57:46,677 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 130 transitions. Word has length 34 [2020-10-19 17:57:46,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:46,678 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 130 transitions. [2020-10-19 17:57:46,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 17:57:46,678 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 130 transitions. [2020-10-19 17:57:46,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-19 17:57:46,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:46,679 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:46,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-10-19 17:57:46,880 INFO L429 AbstractCegarLoop]: === Iteration 38 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:46,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:46,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1573852549, now seen corresponding path program 2 times [2020-10-19 17:57:46,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:46,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603765252] [2020-10-19 17:57:46,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:47,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:47,131 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:47,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603765252] [2020-10-19 17:57:47,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421693494] [2020-10-19 17:57:47,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:57:47,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 17:57:47,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 17:57:47,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 46 conjunts are in the unsatisfiable core [2020-10-19 17:57:47,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:57:47,254 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 [2020-10-19 17:57:47,256 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:57:47,261 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:57:47,262 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:57:47,262 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2020-10-19 17:57:47,362 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 10 [2020-10-19 17:57:47,362 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:57:47,371 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:57:47,372 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 17:57:47,373 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:24 [2020-10-19 17:57:47,549 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2020-10-19 17:57:47,550 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:57:47,562 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:57:47,565 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-19 17:57:47,566 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:38, output treesize:34 [2020-10-19 17:57:47,835 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-19 17:57:47,836 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 10 [2020-10-19 17:57:47,837 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:57:47,853 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:57:47,856 INFO L545 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:57:47,856 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:46, output treesize:3 [2020-10-19 17:57:47,864 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:47,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:57:47,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2020-10-19 17:57:47,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160141342] [2020-10-19 17:57:47,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-19 17:57:47,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:47,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-19 17:57:47,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2020-10-19 17:57:47,866 INFO L87 Difference]: Start difference. First operand 115 states and 130 transitions. Second operand 25 states. [2020-10-19 17:57:49,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:49,068 INFO L93 Difference]: Finished difference Result 175 states and 196 transitions. [2020-10-19 17:57:49,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-19 17:57:49,069 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 34 [2020-10-19 17:57:49,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:49,071 INFO L225 Difference]: With dead ends: 175 [2020-10-19 17:57:49,071 INFO L226 Difference]: Without dead ends: 157 [2020-10-19 17:57:49,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=155, Invalid=1105, Unknown=0, NotChecked=0, Total=1260 [2020-10-19 17:57:49,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-19 17:57:49,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 140. [2020-10-19 17:57:49,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-19 17:57:49,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 158 transitions. [2020-10-19 17:57:49,082 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 158 transitions. Word has length 34 [2020-10-19 17:57:49,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:49,083 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 158 transitions. [2020-10-19 17:57:49,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-19 17:57:49,083 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 158 transitions. [2020-10-19 17:57:49,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-19 17:57:49,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:49,084 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:49,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-10-19 17:57:49,285 INFO L429 AbstractCegarLoop]: === Iteration 39 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:49,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:49,286 INFO L82 PathProgramCache]: Analyzing trace with hash 787503383, now seen corresponding path program 1 times [2020-10-19 17:57:49,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:49,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730247245] [2020-10-19 17:57:49,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:49,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:49,411 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:49,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730247245] [2020-10-19 17:57:49,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48532585] [2020-10-19 17:57:49,412 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 [2020-10-19 17:57:49,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:49,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-19 17:57:49,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:57:49,672 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-19 17:57:49,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:57:49,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2020-10-19 17:57:49,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768960554] [2020-10-19 17:57:49,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-19 17:57:49,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:49,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-19 17:57:49,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-10-19 17:57:49,674 INFO L87 Difference]: Start difference. First operand 140 states and 158 transitions. Second operand 17 states. [2020-10-19 17:57:50,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:50,483 INFO L93 Difference]: Finished difference Result 222 states and 240 transitions. [2020-10-19 17:57:50,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-19 17:57:50,486 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 35 [2020-10-19 17:57:50,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:50,487 INFO L225 Difference]: With dead ends: 222 [2020-10-19 17:57:50,487 INFO L226 Difference]: Without dead ends: 174 [2020-10-19 17:57:50,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=157, Invalid=835, Unknown=0, NotChecked=0, Total=992 [2020-10-19 17:57:50,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-19 17:57:50,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 118. [2020-10-19 17:57:50,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-19 17:57:50,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 131 transitions. [2020-10-19 17:57:50,491 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 131 transitions. Word has length 35 [2020-10-19 17:57:50,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:50,492 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 131 transitions. [2020-10-19 17:57:50,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-19 17:57:50,492 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 131 transitions. [2020-10-19 17:57:50,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-19 17:57:50,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:50,493 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:50,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-19 17:57:50,702 INFO L429 AbstractCegarLoop]: === Iteration 40 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:50,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:50,702 INFO L82 PathProgramCache]: Analyzing trace with hash -551775712, now seen corresponding path program 1 times [2020-10-19 17:57:50,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:50,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851548482] [2020-10-19 17:57:50,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:50,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:50,817 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-19 17:57:50,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851548482] [2020-10-19 17:57:50,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728517577] [2020-10-19 17:57:50,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:57:50,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:50,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-19 17:57:50,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:57:50,934 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:57:50,934 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 25 [2020-10-19 17:57:50,935 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:57:50,954 INFO L625 ElimStorePlain]: treesize reduction 10, result has 67.7 percent of original size [2020-10-19 17:57:50,955 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:57:50,956 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:12 [2020-10-19 17:57:51,101 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-19 17:57:51,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:57:51,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-19 17:57:51,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143360313] [2020-10-19 17:57:51,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-19 17:57:51,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:51,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-19 17:57:51,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-10-19 17:57:51,102 INFO L87 Difference]: Start difference. First operand 118 states and 131 transitions. Second operand 16 states. [2020-10-19 17:57:51,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:51,553 INFO L93 Difference]: Finished difference Result 122 states and 135 transitions. [2020-10-19 17:57:51,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 17:57:51,553 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 37 [2020-10-19 17:57:51,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:51,554 INFO L225 Difference]: With dead ends: 122 [2020-10-19 17:57:51,554 INFO L226 Difference]: Without dead ends: 122 [2020-10-19 17:57:51,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2020-10-19 17:57:51,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-19 17:57:51,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 119. [2020-10-19 17:57:51,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-19 17:57:51,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 131 transitions. [2020-10-19 17:57:51,558 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 131 transitions. Word has length 37 [2020-10-19 17:57:51,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:51,558 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 131 transitions. [2020-10-19 17:57:51,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-19 17:57:51,559 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 131 transitions. [2020-10-19 17:57:51,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-19 17:57:51,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:51,559 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:51,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-19 17:57:51,769 INFO L429 AbstractCegarLoop]: === Iteration 41 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:51,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:51,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1772958174, now seen corresponding path program 3 times [2020-10-19 17:57:51,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:51,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390185122] [2020-10-19 17:57:51,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:51,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:51,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:51,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:51,919 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:51,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390185122] [2020-10-19 17:57:51,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939906562] [2020-10-19 17:57:51,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:57:52,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-19 17:57:52,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 17:57:52,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 34 conjunts are in the unsatisfiable core [2020-10-19 17:57:52,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:57:52,304 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:52,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:57:52,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2020-10-19 17:57:52,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430176219] [2020-10-19 17:57:52,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-19 17:57:52,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:52,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-19 17:57:52,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2020-10-19 17:57:52,306 INFO L87 Difference]: Start difference. First operand 119 states and 131 transitions. Second operand 21 states. [2020-10-19 17:57:53,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:53,226 INFO L93 Difference]: Finished difference Result 204 states and 225 transitions. [2020-10-19 17:57:53,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-19 17:57:53,227 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 38 [2020-10-19 17:57:53,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:53,229 INFO L225 Difference]: With dead ends: 204 [2020-10-19 17:57:53,229 INFO L226 Difference]: Without dead ends: 204 [2020-10-19 17:57:53,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=121, Invalid=691, Unknown=0, NotChecked=0, Total=812 [2020-10-19 17:57:53,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-19 17:57:53,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 184. [2020-10-19 17:57:53,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-19 17:57:53,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 205 transitions. [2020-10-19 17:57:53,234 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 205 transitions. Word has length 38 [2020-10-19 17:57:53,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:53,234 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 205 transitions. [2020-10-19 17:57:53,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-19 17:57:53,235 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 205 transitions. [2020-10-19 17:57:53,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-19 17:57:53,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:53,235 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:53,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:57:53,447 INFO L429 AbstractCegarLoop]: === Iteration 42 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:53,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:53,448 INFO L82 PathProgramCache]: Analyzing trace with hash 74822073, now seen corresponding path program 1 times [2020-10-19 17:57:53,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:53,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273889872] [2020-10-19 17:57:53,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:53,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:53,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:53,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:53,571 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:57:53,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273889872] [2020-10-19 17:57:53,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121066812] [2020-10-19 17:57:53,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:57:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:53,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 31 conjunts are in the unsatisfiable core [2020-10-19 17:57:53,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:57:53,693 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_26|], 1=[|v_#valid_33|]} [2020-10-19 17:57:53,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 17:57:53,707 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 9 treesize of output 11 [2020-10-19 17:57:53,708 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:57:53,714 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:57:53,718 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 [2020-10-19 17:57:53,720 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 17:57:53,725 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:57:53,727 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:57:53,727 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:21, output treesize:9 [2020-10-19 17:57:53,926 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:57:53,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:57:53,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2020-10-19 17:57:53,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555763125] [2020-10-19 17:57:53,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-19 17:57:53,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:53,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-19 17:57:53,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-10-19 17:57:53,927 INFO L87 Difference]: Start difference. First operand 184 states and 205 transitions. Second operand 21 states. [2020-10-19 17:57:54,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:54,846 INFO L93 Difference]: Finished difference Result 207 states and 226 transitions. [2020-10-19 17:57:54,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 17:57:54,847 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 38 [2020-10-19 17:57:54,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:54,849 INFO L225 Difference]: With dead ends: 207 [2020-10-19 17:57:54,849 INFO L226 Difference]: Without dead ends: 207 [2020-10-19 17:57:54,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=121, Invalid=749, Unknown=0, NotChecked=0, Total=870 [2020-10-19 17:57:54,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-19 17:57:54,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 185. [2020-10-19 17:57:54,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-10-19 17:57:54,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 203 transitions. [2020-10-19 17:57:54,859 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 203 transitions. Word has length 38 [2020-10-19 17:57:54,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:54,860 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 203 transitions. [2020-10-19 17:57:54,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-19 17:57:54,860 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 203 transitions. [2020-10-19 17:57:54,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-19 17:57:54,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:54,862 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:55,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-10-19 17:57:55,077 INFO L429 AbstractCegarLoop]: === Iteration 43 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:55,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:55,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1726991819, now seen corresponding path program 1 times [2020-10-19 17:57:55,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:55,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087782820] [2020-10-19 17:57:55,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:55,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:55,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:55,429 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:57:55,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087782820] [2020-10-19 17:57:55,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961986913] [2020-10-19 17:57:55,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:57:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:55,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 53 conjunts are in the unsatisfiable core [2020-10-19 17:57:55,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:57:55,541 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 [2020-10-19 17:57:55,542 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:57:55,546 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:57:55,547 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:57:55,547 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-10-19 17:57:55,651 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 10 [2020-10-19 17:57:55,652 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:57:55,659 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:57:55,660 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 17:57:55,660 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2020-10-19 17:57:55,813 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2020-10-19 17:57:55,814 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:57:55,822 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:57:55,824 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 17:57:55,824 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:32, output treesize:21 [2020-10-19 17:57:55,886 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2020-10-19 17:57:55,887 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:57:55,897 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:57:55,899 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-10-19 17:57:55,899 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:32, output treesize:28 [2020-10-19 17:57:56,037 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:57:56,038 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 21 [2020-10-19 17:57:56,039 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-19 17:57:56,055 INFO L625 ElimStorePlain]: treesize reduction 8, result has 63.6 percent of original size [2020-10-19 17:57:56,058 INFO L545 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:57:56,058 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:35, output treesize:3 [2020-10-19 17:57:56,065 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:57:56,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:57:56,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 26 [2020-10-19 17:57:56,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440492153] [2020-10-19 17:57:56,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-19 17:57:56,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:56,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-19 17:57:56,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2020-10-19 17:57:56,069 INFO L87 Difference]: Start difference. First operand 185 states and 203 transitions. Second operand 26 states. [2020-10-19 17:57:57,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:57:57,482 INFO L93 Difference]: Finished difference Result 194 states and 211 transitions. [2020-10-19 17:57:57,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-19 17:57:57,483 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 40 [2020-10-19 17:57:57,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:57:57,484 INFO L225 Difference]: With dead ends: 194 [2020-10-19 17:57:57,485 INFO L226 Difference]: Without dead ends: 176 [2020-10-19 17:57:57,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=158, Invalid=1248, Unknown=0, NotChecked=0, Total=1406 [2020-10-19 17:57:57,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-19 17:57:57,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 170. [2020-10-19 17:57:57,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-19 17:57:57,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 186 transitions. [2020-10-19 17:57:57,489 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 186 transitions. Word has length 40 [2020-10-19 17:57:57,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:57:57,489 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 186 transitions. [2020-10-19 17:57:57,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-19 17:57:57,490 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 186 transitions. [2020-10-19 17:57:57,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-19 17:57:57,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:57:57,490 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:57:57,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:57:57,695 INFO L429 AbstractCegarLoop]: === Iteration 44 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:57:57,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:57:57,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1310842333, now seen corresponding path program 4 times [2020-10-19 17:57:57,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:57:57,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522242080] [2020-10-19 17:57:57,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:57:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:57,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:57:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:57:57,925 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:57,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522242080] [2020-10-19 17:57:57,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119678213] [2020-10-19 17:57:57,925 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:57:58,020 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-19 17:57:58,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 17:57:58,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 50 conjunts are in the unsatisfiable core [2020-10-19 17:57:58,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:57:58,029 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_27|], 1=[|v_#valid_35|]} [2020-10-19 17:57:58,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 17:57:58,034 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 9 treesize of output 11 [2020-10-19 17:57:58,034 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:57:58,042 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:57:58,046 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 [2020-10-19 17:57:58,048 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 17:57:58,056 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:57:58,057 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:57:58,057 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:16 [2020-10-19 17:57:58,177 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 [2020-10-19 17:57:58,177 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:57:58,183 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:57:58,184 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:57:58,184 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2020-10-19 17:57:58,298 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-10-19 17:57:58,298 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:57:58,306 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:57:58,307 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-19 17:57:58,307 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:32, output treesize:28 [2020-10-19 17:57:58,621 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2020-10-19 17:57:58,623 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 17:57:58,639 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:57:58,646 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-19 17:57:58,647 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2020-10-19 17:57:58,649 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 17:57:58,660 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:57:58,662 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:57:58,662 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:45, output treesize:3 [2020-10-19 17:57:58,674 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:57:58,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:57:58,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 28 [2020-10-19 17:57:58,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903508757] [2020-10-19 17:57:58,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-19 17:57:58,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:57:58,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-19 17:57:58,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=694, Unknown=0, NotChecked=0, Total=756 [2020-10-19 17:57:58,676 INFO L87 Difference]: Start difference. First operand 170 states and 186 transitions. Second operand 28 states. [2020-10-19 17:58:00,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:00,579 INFO L93 Difference]: Finished difference Result 246 states and 267 transitions. [2020-10-19 17:58:00,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-19 17:58:00,580 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 41 [2020-10-19 17:58:00,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:00,582 INFO L225 Difference]: With dead ends: 246 [2020-10-19 17:58:00,582 INFO L226 Difference]: Without dead ends: 225 [2020-10-19 17:58:00,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=257, Invalid=1999, Unknown=0, NotChecked=0, Total=2256 [2020-10-19 17:58:00,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-19 17:58:00,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 180. [2020-10-19 17:58:00,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-19 17:58:00,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 197 transitions. [2020-10-19 17:58:00,589 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 197 transitions. Word has length 41 [2020-10-19 17:58:00,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:00,589 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 197 transitions. [2020-10-19 17:58:00,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-19 17:58:00,589 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 197 transitions. [2020-10-19 17:58:00,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-19 17:58:00,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:00,590 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:00,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-19 17:58:00,803 INFO L429 AbstractCegarLoop]: === Iteration 45 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:58:00,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:00,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1974147126, now seen corresponding path program 2 times [2020-10-19 17:58:00,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:58:00,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661148583] [2020-10-19 17:58:00,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:58:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:00,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:58:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:01,001 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:58:01,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661148583] [2020-10-19 17:58:01,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482442075] [2020-10-19 17:58:01,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:58:01,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 17:58:01,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 17:58:01,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-19 17:58:01,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:58:01,237 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:58:01,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:58:01,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 15 [2020-10-19 17:58:01,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460674698] [2020-10-19 17:58:01,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-19 17:58:01,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:58:01,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-19 17:58:01,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-19 17:58:01,239 INFO L87 Difference]: Start difference. First operand 180 states and 197 transitions. Second operand 15 states. [2020-10-19 17:58:01,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:01,970 INFO L93 Difference]: Finished difference Result 203 states and 221 transitions. [2020-10-19 17:58:01,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-19 17:58:01,970 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 42 [2020-10-19 17:58:01,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:01,972 INFO L225 Difference]: With dead ends: 203 [2020-10-19 17:58:01,972 INFO L226 Difference]: Without dead ends: 203 [2020-10-19 17:58:01,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2020-10-19 17:58:01,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-19 17:58:01,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 184. [2020-10-19 17:58:01,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-19 17:58:01,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 201 transitions. [2020-10-19 17:58:01,979 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 201 transitions. Word has length 42 [2020-10-19 17:58:01,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:01,979 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 201 transitions. [2020-10-19 17:58:01,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-19 17:58:01,979 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 201 transitions. [2020-10-19 17:58:01,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-19 17:58:01,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:01,981 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:02,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:58:02,194 INFO L429 AbstractCegarLoop]: === Iteration 46 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:58:02,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:02,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1220114784, now seen corresponding path program 1 times [2020-10-19 17:58:02,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:58:02,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973742405] [2020-10-19 17:58:02,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:58:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:02,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:58:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:02,367 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:58:02,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973742405] [2020-10-19 17:58:02,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377589023] [2020-10-19 17:58:02,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:58:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:02,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 38 conjunts are in the unsatisfiable core [2020-10-19 17:58:02,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:58:02,492 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_28|], 1=[|v_#valid_36|]} [2020-10-19 17:58:02,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 17:58:02,498 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 9 treesize of output 11 [2020-10-19 17:58:02,498 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:02,506 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:02,510 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 [2020-10-19 17:58:02,512 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:02,518 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:02,520 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:58:02,520 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:21, output treesize:9 [2020-10-19 17:58:02,719 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:58:02,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:58:02,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2020-10-19 17:58:02,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618838558] [2020-10-19 17:58:02,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-19 17:58:02,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:58:02,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-19 17:58:02,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-10-19 17:58:02,720 INFO L87 Difference]: Start difference. First operand 184 states and 201 transitions. Second operand 21 states. [2020-10-19 17:58:03,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:03,475 INFO L93 Difference]: Finished difference Result 212 states and 230 transitions. [2020-10-19 17:58:03,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 17:58:03,476 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 44 [2020-10-19 17:58:03,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:03,478 INFO L225 Difference]: With dead ends: 212 [2020-10-19 17:58:03,478 INFO L226 Difference]: Without dead ends: 212 [2020-10-19 17:58:03,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=121, Invalid=749, Unknown=0, NotChecked=0, Total=870 [2020-10-19 17:58:03,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-19 17:58:03,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 190. [2020-10-19 17:58:03,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-19 17:58:03,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 208 transitions. [2020-10-19 17:58:03,483 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 208 transitions. Word has length 44 [2020-10-19 17:58:03,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:03,483 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 208 transitions. [2020-10-19 17:58:03,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-19 17:58:03,483 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 208 transitions. [2020-10-19 17:58:03,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-19 17:58:03,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:03,484 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:03,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-10-19 17:58:03,696 INFO L429 AbstractCegarLoop]: === Iteration 47 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:58:03,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:03,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1718113632, now seen corresponding path program 5 times [2020-10-19 17:58:03,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:58:03,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885092497] [2020-10-19 17:58:03,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:58:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:03,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:58:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:03,884 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:03,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885092497] [2020-10-19 17:58:03,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632376481] [2020-10-19 17:58:03,885 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:58:03,992 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-19 17:58:03,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 17:58:03,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 47 conjunts are in the unsatisfiable core [2020-10-19 17:58:03,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:58:04,013 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:04,013 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 25 [2020-10-19 17:58:04,013 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:04,041 INFO L625 ElimStorePlain]: treesize reduction 10, result has 67.7 percent of original size [2020-10-19 17:58:04,043 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:58:04,043 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:12 [2020-10-19 17:58:04,373 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:04,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:58:04,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2020-10-19 17:58:04,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987883502] [2020-10-19 17:58:04,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-19 17:58:04,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:58:04,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-19 17:58:04,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2020-10-19 17:58:04,377 INFO L87 Difference]: Start difference. First operand 190 states and 208 transitions. Second operand 24 states. [2020-10-19 17:58:05,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:05,547 INFO L93 Difference]: Finished difference Result 289 states and 317 transitions. [2020-10-19 17:58:05,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-19 17:58:05,548 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 45 [2020-10-19 17:58:05,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:05,550 INFO L225 Difference]: With dead ends: 289 [2020-10-19 17:58:05,551 INFO L226 Difference]: Without dead ends: 289 [2020-10-19 17:58:05,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=866, Unknown=0, NotChecked=0, Total=992 [2020-10-19 17:58:05,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-10-19 17:58:05,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 255. [2020-10-19 17:58:05,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-19 17:58:05,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 284 transitions. [2020-10-19 17:58:05,556 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 284 transitions. Word has length 45 [2020-10-19 17:58:05,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:05,556 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 284 transitions. [2020-10-19 17:58:05,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-19 17:58:05,557 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 284 transitions. [2020-10-19 17:58:05,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-19 17:58:05,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:05,559 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:05,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-10-19 17:58:05,772 INFO L429 AbstractCegarLoop]: === Iteration 48 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:58:05,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:05,772 INFO L82 PathProgramCache]: Analyzing trace with hash 4235297, now seen corresponding path program 1 times [2020-10-19 17:58:05,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:58:05,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984530999] [2020-10-19 17:58:05,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:58:05,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:06,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:58:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:06,115 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-19 17:58:06,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984530999] [2020-10-19 17:58:06,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769066476] [2020-10-19 17:58:06,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:58:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:06,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 50 conjunts are in the unsatisfiable core [2020-10-19 17:58:06,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:58:06,234 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:06,235 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 25 [2020-10-19 17:58:06,235 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:06,253 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-10-19 17:58:06,254 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:58:06,255 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2020-10-19 17:58:06,363 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2020-10-19 17:58:06,363 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:06,379 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:06,379 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:58:06,379 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:23 [2020-10-19 17:58:06,548 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:06,549 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 62 [2020-10-19 17:58:06,550 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:06,596 INFO L625 ElimStorePlain]: treesize reduction 26, result has 66.2 percent of original size [2020-10-19 17:58:06,598 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-19 17:58:06,602 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:58:06,603 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:42, output treesize:48 [2020-10-19 17:58:06,665 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:58:06,724 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:58:06,741 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2020-10-19 17:58:06,745 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:06,753 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-19 17:58:06,754 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 7 [2020-10-19 17:58:06,754 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:06,773 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:06,774 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-10-19 17:58:06,775 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:66, output treesize:32 [2020-10-19 17:58:06,860 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:58:06,929 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-19 17:58:06,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:58:06,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2020-10-19 17:58:06,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109409339] [2020-10-19 17:58:06,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-19 17:58:06,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:58:06,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-19 17:58:06,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=595, Unknown=0, NotChecked=0, Total=650 [2020-10-19 17:58:06,931 INFO L87 Difference]: Start difference. First operand 255 states and 284 transitions. Second operand 26 states. [2020-10-19 17:58:08,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:08,629 INFO L93 Difference]: Finished difference Result 251 states and 277 transitions. [2020-10-19 17:58:08,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-19 17:58:08,630 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 46 [2020-10-19 17:58:08,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:08,632 INFO L225 Difference]: With dead ends: 251 [2020-10-19 17:58:08,632 INFO L226 Difference]: Without dead ends: 236 [2020-10-19 17:58:08,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=138, Invalid=1268, Unknown=0, NotChecked=0, Total=1406 [2020-10-19 17:58:08,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-10-19 17:58:08,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2020-10-19 17:58:08,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-19 17:58:08,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 262 transitions. [2020-10-19 17:58:08,638 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 262 transitions. Word has length 46 [2020-10-19 17:58:08,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:08,638 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 262 transitions. [2020-10-19 17:58:08,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-19 17:58:08,638 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 262 transitions. [2020-10-19 17:58:08,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-19 17:58:08,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:08,640 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:08,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2020-10-19 17:58:08,847 INFO L429 AbstractCegarLoop]: === Iteration 49 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:58:08,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:08,847 INFO L82 PathProgramCache]: Analyzing trace with hash -416257385, now seen corresponding path program 2 times [2020-10-19 17:58:08,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:58:08,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421813559] [2020-10-19 17:58:08,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:58:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:09,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:58:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:09,364 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:09,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421813559] [2020-10-19 17:58:09,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114606167] [2020-10-19 17:58:09,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:58:09,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 17:58:09,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 17:58:09,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 68 conjunts are in the unsatisfiable core [2020-10-19 17:58:09,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:58:09,505 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_31|], 1=[|v_#valid_37|]} [2020-10-19 17:58:09,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 17:58:09,511 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 9 treesize of output 11 [2020-10-19 17:58:09,511 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:09,521 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:09,528 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 [2020-10-19 17:58:09,534 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:09,542 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:09,547 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:58:09,548 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:16 [2020-10-19 17:58:09,664 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 12 [2020-10-19 17:58:09,664 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:09,671 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:09,672 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:58:09,672 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:25 [2020-10-19 17:58:09,991 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2020-10-19 17:58:09,992 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:10,003 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:10,004 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 17:58:10,005 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:33 [2020-10-19 17:58:10,105 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2020-10-19 17:58:10,107 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:10,127 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:10,129 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-10-19 17:58:10,129 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:40 [2020-10-19 17:58:10,453 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:10,453 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2020-10-19 17:58:10,455 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-19 17:58:10,472 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:10,473 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-19 17:58:10,474 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:58:10,475 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:49, output treesize:34 [2020-10-19 17:58:10,565 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:58:10,702 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:58:10,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:58:10,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16] total 35 [2020-10-19 17:58:10,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202027880] [2020-10-19 17:58:10,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-19 17:58:10,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:58:10,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-19 17:58:10,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=1114, Unknown=0, NotChecked=0, Total=1190 [2020-10-19 17:58:10,704 INFO L87 Difference]: Start difference. First operand 236 states and 262 transitions. Second operand 35 states. [2020-10-19 17:58:14,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:14,864 INFO L93 Difference]: Finished difference Result 276 states and 301 transitions. [2020-10-19 17:58:14,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-19 17:58:14,864 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 47 [2020-10-19 17:58:14,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:14,867 INFO L225 Difference]: With dead ends: 276 [2020-10-19 17:58:14,867 INFO L226 Difference]: Without dead ends: 255 [2020-10-19 17:58:14,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 756 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=348, Invalid=4344, Unknown=0, NotChecked=0, Total=4692 [2020-10-19 17:58:14,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-19 17:58:14,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 231. [2020-10-19 17:58:14,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-10-19 17:58:14,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 255 transitions. [2020-10-19 17:58:14,875 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 255 transitions. Word has length 47 [2020-10-19 17:58:14,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:14,876 INFO L481 AbstractCegarLoop]: Abstraction has 231 states and 255 transitions. [2020-10-19 17:58:14,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-19 17:58:14,876 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 255 transitions. [2020-10-19 17:58:14,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-19 17:58:14,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:14,877 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:15,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-10-19 17:58:15,092 INFO L429 AbstractCegarLoop]: === Iteration 50 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:58:15,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:15,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1197946721, now seen corresponding path program 6 times [2020-10-19 17:58:15,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:58:15,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543376918] [2020-10-19 17:58:15,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:58:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:15,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:58:15,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:15,448 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:15,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543376918] [2020-10-19 17:58:15,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599168322] [2020-10-19 17:58:15,449 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:58:15,635 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-10-19 17:58:15,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 17:58:15,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 67 conjunts are in the unsatisfiable core [2020-10-19 17:58:15,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:58:15,651 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 [2020-10-19 17:58:15,653 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:15,660 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:15,660 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:58:15,661 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-10-19 17:58:15,912 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 10 [2020-10-19 17:58:15,912 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:15,925 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:15,926 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 17:58:15,926 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2020-10-19 17:58:16,135 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2020-10-19 17:58:16,136 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:16,152 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:16,154 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-10-19 17:58:16,154 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:32, output treesize:28 [2020-10-19 17:58:16,700 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:16,701 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 21 [2020-10-19 17:58:16,702 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-19 17:58:16,717 INFO L625 ElimStorePlain]: treesize reduction 8, result has 63.6 percent of original size [2020-10-19 17:58:16,719 INFO L545 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:58:16,720 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:35, output treesize:3 [2020-10-19 17:58:16,732 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:16,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:58:16,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 32 [2020-10-19 17:58:16,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27865925] [2020-10-19 17:58:16,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-19 17:58:16,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:58:16,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-19 17:58:16,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=914, Unknown=0, NotChecked=0, Total=992 [2020-10-19 17:58:16,734 INFO L87 Difference]: Start difference. First operand 231 states and 255 transitions. Second operand 32 states. [2020-10-19 17:58:18,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:18,302 INFO L93 Difference]: Finished difference Result 310 states and 339 transitions. [2020-10-19 17:58:18,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-19 17:58:18,302 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 48 [2020-10-19 17:58:18,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:18,304 INFO L225 Difference]: With dead ends: 310 [2020-10-19 17:58:18,305 INFO L226 Difference]: Without dead ends: 286 [2020-10-19 17:58:18,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=176, Invalid=1716, Unknown=0, NotChecked=0, Total=1892 [2020-10-19 17:58:18,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-19 17:58:18,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 241. [2020-10-19 17:58:18,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-10-19 17:58:18,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 266 transitions. [2020-10-19 17:58:18,310 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 266 transitions. Word has length 48 [2020-10-19 17:58:18,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:18,310 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 266 transitions. [2020-10-19 17:58:18,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-19 17:58:18,311 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 266 transitions. [2020-10-19 17:58:18,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-19 17:58:18,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:18,312 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:18,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-19 17:58:18,524 INFO L429 AbstractCegarLoop]: === Iteration 51 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:58:18,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:18,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1105486493, now seen corresponding path program 1 times [2020-10-19 17:58:18,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:58:18,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317961640] [2020-10-19 17:58:18,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:58:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:18,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:58:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:18,716 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:58:18,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317961640] [2020-10-19 17:58:18,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779199084] [2020-10-19 17:58:18,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:58:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:18,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-19 17:58:18,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:58:19,082 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-19 17:58:19,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:58:19,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2020-10-19 17:58:19,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018706689] [2020-10-19 17:58:19,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-19 17:58:19,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:58:19,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-19 17:58:19,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2020-10-19 17:58:19,086 INFO L87 Difference]: Start difference. First operand 241 states and 266 transitions. Second operand 21 states. [2020-10-19 17:58:20,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:20,213 INFO L93 Difference]: Finished difference Result 360 states and 389 transitions. [2020-10-19 17:58:20,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-19 17:58:20,217 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 48 [2020-10-19 17:58:20,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:20,218 INFO L225 Difference]: With dead ends: 360 [2020-10-19 17:58:20,218 INFO L226 Difference]: Without dead ends: 297 [2020-10-19 17:58:20,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=211, Invalid=1271, Unknown=0, NotChecked=0, Total=1482 [2020-10-19 17:58:20,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-19 17:58:20,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 257. [2020-10-19 17:58:20,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-10-19 17:58:20,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 283 transitions. [2020-10-19 17:58:20,223 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 283 transitions. Word has length 48 [2020-10-19 17:58:20,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:20,223 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 283 transitions. [2020-10-19 17:58:20,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-19 17:58:20,224 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 283 transitions. [2020-10-19 17:58:20,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-19 17:58:20,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:20,225 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:20,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:58:20,437 INFO L429 AbstractCegarLoop]: === Iteration 52 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:58:20,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:20,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1344074940, now seen corresponding path program 3 times [2020-10-19 17:58:20,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:58:20,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098496249] [2020-10-19 17:58:20,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:58:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:20,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:58:20,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:20,611 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-19 17:58:20,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098496249] [2020-10-19 17:58:20,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149643116] [2020-10-19 17:58:20,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:58:20,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-19 17:58:20,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 17:58:20,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 36 conjunts are in the unsatisfiable core [2020-10-19 17:58:20,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:58:20,747 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:20,747 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 25 [2020-10-19 17:58:20,748 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:20,770 INFO L625 ElimStorePlain]: treesize reduction 10, result has 67.7 percent of original size [2020-10-19 17:58:20,772 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:58:20,772 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:12 [2020-10-19 17:58:20,997 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-19 17:58:20,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:58:20,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2020-10-19 17:58:20,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093353061] [2020-10-19 17:58:20,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-19 17:58:20,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:58:20,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-19 17:58:20,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2020-10-19 17:58:20,998 INFO L87 Difference]: Start difference. First operand 257 states and 283 transitions. Second operand 20 states. [2020-10-19 17:58:21,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:21,918 INFO L93 Difference]: Finished difference Result 262 states and 286 transitions. [2020-10-19 17:58:21,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-19 17:58:21,919 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 50 [2020-10-19 17:58:21,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:21,921 INFO L225 Difference]: With dead ends: 262 [2020-10-19 17:58:21,921 INFO L226 Difference]: Without dead ends: 262 [2020-10-19 17:58:21,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2020-10-19 17:58:21,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-10-19 17:58:21,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 258. [2020-10-19 17:58:21,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-19 17:58:21,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 281 transitions. [2020-10-19 17:58:21,926 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 281 transitions. Word has length 50 [2020-10-19 17:58:21,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:21,926 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 281 transitions. [2020-10-19 17:58:21,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-19 17:58:21,926 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 281 transitions. [2020-10-19 17:58:21,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-19 17:58:21,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:21,928 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:22,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-10-19 17:58:22,140 INFO L429 AbstractCegarLoop]: === Iteration 53 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:58:22,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:22,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1283349781, now seen corresponding path program 2 times [2020-10-19 17:58:22,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:58:22,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849579311] [2020-10-19 17:58:22,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:58:22,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:22,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:58:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:22,339 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-19 17:58:22,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849579311] [2020-10-19 17:58:22,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747397443] [2020-10-19 17:58:22,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:58:22,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 17:58:22,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 17:58:22,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 50 conjunts are in the unsatisfiable core [2020-10-19 17:58:22,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:58:22,486 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_33|], 1=[|v_#valid_39|]} [2020-10-19 17:58:22,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 17:58:22,490 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 9 treesize of output 11 [2020-10-19 17:58:22,491 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:22,498 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:22,502 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 [2020-10-19 17:58:22,503 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:22,509 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:22,510 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:58:22,510 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:18, output treesize:5 [2020-10-19 17:58:22,993 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-19 17:58:22,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:58:22,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 27 [2020-10-19 17:58:22,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499946410] [2020-10-19 17:58:22,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-19 17:58:22,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:58:22,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-19 17:58:22,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=690, Unknown=0, NotChecked=0, Total=756 [2020-10-19 17:58:22,994 INFO L87 Difference]: Start difference. First operand 258 states and 281 transitions. Second operand 28 states. [2020-10-19 17:58:25,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:25,609 INFO L93 Difference]: Finished difference Result 290 states and 311 transitions. [2020-10-19 17:58:25,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-19 17:58:25,610 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 51 [2020-10-19 17:58:25,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:25,612 INFO L225 Difference]: With dead ends: 290 [2020-10-19 17:58:25,612 INFO L226 Difference]: Without dead ends: 290 [2020-10-19 17:58:25,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=274, Invalid=2378, Unknown=0, NotChecked=0, Total=2652 [2020-10-19 17:58:25,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-10-19 17:58:25,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 259. [2020-10-19 17:58:25,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-19 17:58:25,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 279 transitions. [2020-10-19 17:58:25,618 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 279 transitions. Word has length 51 [2020-10-19 17:58:25,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:25,619 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 279 transitions. [2020-10-19 17:58:25,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-19 17:58:25,619 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 279 transitions. [2020-10-19 17:58:25,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-19 17:58:25,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:25,620 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:25,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:58:25,834 INFO L429 AbstractCegarLoop]: === Iteration 54 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:58:25,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:25,834 INFO L82 PathProgramCache]: Analyzing trace with hash 533375612, now seen corresponding path program 7 times [2020-10-19 17:58:25,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:58:25,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746746094] [2020-10-19 17:58:25,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:58:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:26,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:58:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:26,054 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:26,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746746094] [2020-10-19 17:58:26,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550097327] [2020-10-19 17:58:26,055 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:58:26,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:26,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 56 conjunts are in the unsatisfiable core [2020-10-19 17:58:26,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:58:26,185 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:26,185 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 25 [2020-10-19 17:58:26,186 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:26,209 INFO L625 ElimStorePlain]: treesize reduction 10, result has 67.7 percent of original size [2020-10-19 17:58:26,212 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:58:26,212 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:12 [2020-10-19 17:58:26,622 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 15 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:26,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:58:26,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2020-10-19 17:58:26,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74586273] [2020-10-19 17:58:26,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-19 17:58:26,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:58:26,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-19 17:58:26,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2020-10-19 17:58:26,624 INFO L87 Difference]: Start difference. First operand 259 states and 279 transitions. Second operand 28 states. [2020-10-19 17:58:28,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:28,177 INFO L93 Difference]: Finished difference Result 394 states and 425 transitions. [2020-10-19 17:58:28,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-19 17:58:28,178 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 52 [2020-10-19 17:58:28,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:28,179 INFO L225 Difference]: With dead ends: 394 [2020-10-19 17:58:28,180 INFO L226 Difference]: Without dead ends: 394 [2020-10-19 17:58:28,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=154, Invalid=1178, Unknown=0, NotChecked=0, Total=1332 [2020-10-19 17:58:28,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-10-19 17:58:28,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 350. [2020-10-19 17:58:28,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-10-19 17:58:28,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 380 transitions. [2020-10-19 17:58:28,185 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 380 transitions. Word has length 52 [2020-10-19 17:58:28,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:28,185 INFO L481 AbstractCegarLoop]: Abstraction has 350 states and 380 transitions. [2020-10-19 17:58:28,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-19 17:58:28,185 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 380 transitions. [2020-10-19 17:58:28,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-19 17:58:28,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:28,186 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:28,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2020-10-19 17:58:28,397 INFO L429 AbstractCegarLoop]: === Iteration 55 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:58:28,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:28,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1136222785, now seen corresponding path program 3 times [2020-10-19 17:58:28,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:58:28,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670313820] [2020-10-19 17:58:28,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:58:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:28,455 ERROR L253 erpolLogProxyWrapper]: Interpolant 20 not inductive [2020-10-19 17:58:28,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-19 17:58:28,498 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:876) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-10-19 17:58:28,504 INFO L168 Benchmark]: Toolchain (without parser) took 61216.53 ms. Allocated memory was 1.0 GB in the beginning and 1.6 GB in the end (delta: 587.2 MB). Free memory was 958.6 MB in the beginning and 780.4 MB in the end (delta: 178.3 MB). Peak memory consumption was 765.5 MB. Max. memory is 11.5 GB. [2020-10-19 17:58:28,505 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 17:58:28,510 INFO L168 Benchmark]: CACSL2BoogieTranslator took 659.94 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.2 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -116.7 MB). Peak memory consumption was 22.2 MB. Max. memory is 11.5 GB. [2020-10-19 17:58:28,510 INFO L168 Benchmark]: Boogie Preprocessor took 64.34 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2020-10-19 17:58:28,511 INFO L168 Benchmark]: RCFGBuilder took 719.43 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 11.5 GB. [2020-10-19 17:58:28,511 INFO L168 Benchmark]: TraceAbstraction took 59757.55 ms. Allocated memory was 1.1 GB in the beginning and 1.6 GB in the end (delta: 497.0 MB). Free memory was 1.0 GB in the beginning and 780.4 MB in the end (delta: 229.8 MB). Peak memory consumption was 726.8 MB. Max. memory is 11.5 GB. [2020-10-19 17:58:28,514 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 659.94 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.2 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -116.7 MB). Peak memory consumption was 22.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 64.34 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 719.43 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 59757.55 ms. Allocated memory was 1.1 GB in the beginning and 1.6 GB in the end (delta: 497.0 MB). Free memory was 1.0 GB in the beginning and 780.4 MB in the end (delta: 229.8 MB). Peak memory consumption was 726.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-906a4fb [2020-10-19 17:58:30,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 17:58:30,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 17:58:30,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 17:58:30,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 17:58:30,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 17:58:30,675 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 17:58:30,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 17:58:30,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 17:58:30,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 17:58:30,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 17:58:30,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 17:58:30,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 17:58:30,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 17:58:30,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 17:58:30,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 17:58:30,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 17:58:30,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 17:58:30,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 17:58:30,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 17:58:30,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 17:58:30,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 17:58:30,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 17:58:30,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 17:58:30,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 17:58:30,706 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 17:58:30,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 17:58:30,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 17:58:30,708 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 17:58:30,709 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 17:58:30,709 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 17:58:30,711 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 17:58:30,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 17:58:30,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 17:58:30,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 17:58:30,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 17:58:30,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 17:58:30,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 17:58:30,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 17:58:30,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 17:58:30,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 17:58:30,720 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-19 17:58:30,744 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 17:58:30,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 17:58:30,746 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 17:58:30,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 17:58:30,746 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 17:58:30,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 17:58:30,747 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 17:58:30,747 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 17:58:30,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 17:58:30,748 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 17:58:30,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 17:58:30,749 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 17:58:30,749 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 17:58:30,749 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 17:58:30,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 17:58:30,750 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 17:58:30,750 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-19 17:58:30,750 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-19 17:58:30,751 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 17:58:30,751 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 17:58:30,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 17:58:30,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 17:58:30,752 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 17:58:30,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 17:58:30,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 17:58:30,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 17:58:30,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 17:58:30,753 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-19 17:58:30,754 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-19 17:58:30,754 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 17:58:30,754 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-19 17:58:30,755 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 -> ab78f7d39533ea56445a9c400b78ef25527bc8ae [2020-10-19 17:58:31,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 17:58:31,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 17:58:31,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 17:58:31,099 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 17:58:31,101 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 17:58:31,101 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cstrlcpy-alloca-1.i [2020-10-19 17:58:31,187 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ef754e15/747011e5286541f994f67472c933735e/FLAGe7e5af535 [2020-10-19 17:58:31,763 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 17:58:31,764 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cstrlcpy-alloca-1.i [2020-10-19 17:58:31,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ef754e15/747011e5286541f994f67472c933735e/FLAGe7e5af535 [2020-10-19 17:58:32,066 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ef754e15/747011e5286541f994f67472c933735e [2020-10-19 17:58:32,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 17:58:32,078 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 17:58:32,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 17:58:32,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 17:58:32,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 17:58:32,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 05:58:32" (1/1) ... [2020-10-19 17:58:32,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43272b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:58:32, skipping insertion in model container [2020-10-19 17:58:32,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 05:58:32" (1/1) ... [2020-10-19 17:58:32,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 17:58:32,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 17:58:32,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 17:58:32,575 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 17:58:32,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 17:58:32,729 INFO L208 MainTranslator]: Completed translation [2020-10-19 17:58:32,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:58:32 WrapperNode [2020-10-19 17:58:32,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 17:58:32,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 17:58:32,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 17:58:32,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 17:58:32,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:58:32" (1/1) ... [2020-10-19 17:58:32,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:58:32" (1/1) ... [2020-10-19 17:58:32,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:58:32" (1/1) ... [2020-10-19 17:58:32,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:58:32" (1/1) ... [2020-10-19 17:58:32,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:58:32" (1/1) ... [2020-10-19 17:58:32,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:58:32" (1/1) ... [2020-10-19 17:58:32,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:58:32" (1/1) ... [2020-10-19 17:58:32,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 17:58:32,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 17:58:32,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 17:58:32,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 17:58:32,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:58:32" (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 [2020-10-19 17:58:32,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 17:58:32,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 17:58:32,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-10-19 17:58:32,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-19 17:58:32,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-19 17:58:32,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-19 17:58:32,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-19 17:58:32,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-19 17:58:32,898 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrlcpy [2020-10-19 17:58:32,899 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 17:58:32,899 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 17:58:32,899 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 17:58:32,899 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 17:58:32,901 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 17:58:32,901 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 17:58:32,901 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 17:58:32,901 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 17:58:32,902 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 17:58:32,902 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 17:58:32,902 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 17:58:32,902 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 17:58:32,903 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 17:58:32,903 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 17:58:32,904 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 17:58:32,904 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 17:58:32,904 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 17:58:32,905 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-19 17:58:32,905 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-19 17:58:32,905 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-19 17:58:32,905 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-19 17:58:32,905 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-19 17:58:32,905 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 17:58:32,905 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 17:58:32,905 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 17:58:32,906 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 17:58:32,906 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 17:58:32,906 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 17:58:32,906 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 17:58:32,906 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 17:58:32,906 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 17:58:32,906 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 17:58:32,906 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 17:58:32,907 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 17:58:32,907 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 17:58:32,907 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 17:58:32,907 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 17:58:32,907 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 17:58:32,907 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 17:58:32,907 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 17:58:32,907 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 17:58:32,908 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 17:58:32,908 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 17:58:32,908 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 17:58:32,908 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 17:58:32,909 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 17:58:32,909 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 17:58:32,909 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 17:58:32,909 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 17:58:32,909 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 17:58:32,910 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 17:58:32,910 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 17:58:32,910 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 17:58:32,911 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 17:58:32,911 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 17:58:32,911 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 17:58:32,913 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 17:58:32,913 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 17:58:32,913 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 17:58:32,914 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 17:58:32,915 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 17:58:32,915 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 17:58:32,916 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 17:58:32,917 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 17:58:32,918 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 17:58:32,919 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 17:58:32,920 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 17:58:32,920 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 17:58:32,920 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 17:58:32,920 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 17:58:32,921 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 17:58:32,921 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 17:58:32,921 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 17:58:32,923 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 17:58:32,923 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 17:58:32,923 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 17:58:32,923 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 17:58:32,924 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 17:58:32,924 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 17:58:32,924 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 17:58:32,924 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 17:58:32,925 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 17:58:32,925 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 17:58:32,925 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 17:58:32,925 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 17:58:32,925 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 17:58:32,926 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 17:58:32,926 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 17:58:32,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 17:58:32,926 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 17:58:32,927 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 17:58:32,927 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 17:58:32,927 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 17:58:32,927 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 17:58:32,928 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 17:58:32,928 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 17:58:32,928 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 17:58:32,928 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 17:58:32,928 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 17:58:32,929 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 17:58:32,929 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 17:58:32,929 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 17:58:32,929 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 17:58:32,930 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 17:58:32,931 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 17:58:32,931 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 17:58:32,931 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 17:58:32,933 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 17:58:32,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 17:58:32,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-19 17:58:32,935 INFO L130 BoogieDeclarations]: Found specification of procedure cstrlcpy [2020-10-19 17:58:32,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-19 17:58:32,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-19 17:58:32,936 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 17:58:32,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 17:58:32,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 17:58:32,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 17:58:32,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 17:58:32,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-10-19 17:58:33,664 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 17:58:33,665 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-19 17:58:33,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 05:58:33 BoogieIcfgContainer [2020-10-19 17:58:33,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 17:58:33,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 17:58:33,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 17:58:33,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 17:58:33,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 05:58:32" (1/3) ... [2020-10-19 17:58:33,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@677047b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 05:58:33, skipping insertion in model container [2020-10-19 17:58:33,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:58:32" (2/3) ... [2020-10-19 17:58:33,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@677047b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 05:58:33, skipping insertion in model container [2020-10-19 17:58:33,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 05:58:33" (3/3) ... [2020-10-19 17:58:33,677 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cstrlcpy-alloca-1.i [2020-10-19 17:58:33,691 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 17:58:33,699 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2020-10-19 17:58:33,715 INFO L253 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-10-19 17:58:33,734 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 17:58:33,735 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 17:58:33,735 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 17:58:33,735 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 17:58:33,735 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 17:58:33,735 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 17:58:33,735 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 17:58:33,735 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 17:58:33,751 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-10-19 17:58:33,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 17:58:33,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:33,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:33,764 INFO L429 AbstractCegarLoop]: === Iteration 1 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:58:33,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:33,770 INFO L82 PathProgramCache]: Analyzing trace with hash -646265141, now seen corresponding path program 1 times [2020-10-19 17:58:33,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:58:33,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1764608102] [2020-10-19 17:58:33,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-19 17:58:33,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:33,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 17:58:33,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:58:34,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:34,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:58:34,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:34,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1764608102] [2020-10-19 17:58:34,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:58:34,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-19 17:58:34,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457178632] [2020-10-19 17:58:34,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 17:58:34,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 17:58:34,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 17:58:34,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-19 17:58:34,143 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 6 states. [2020-10-19 17:58:34,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:34,302 INFO L93 Difference]: Finished difference Result 80 states and 92 transitions. [2020-10-19 17:58:34,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 17:58:34,305 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-10-19 17:58:34,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:34,322 INFO L225 Difference]: With dead ends: 80 [2020-10-19 17:58:34,322 INFO L226 Difference]: Without dead ends: 76 [2020-10-19 17:58:34,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-19 17:58:34,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-19 17:58:34,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 59. [2020-10-19 17:58:34,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-19 17:58:34,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2020-10-19 17:58:34,380 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 11 [2020-10-19 17:58:34,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:34,381 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2020-10-19 17:58:34,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 17:58:34,381 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2020-10-19 17:58:34,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 17:58:34,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:34,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:34,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-19 17:58:34,599 INFO L429 AbstractCegarLoop]: === Iteration 2 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:58:34,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:34,599 INFO L82 PathProgramCache]: Analyzing trace with hash -644418099, now seen corresponding path program 1 times [2020-10-19 17:58:34,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:58:34,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [468457048] [2020-10-19 17:58:34,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-19 17:58:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:34,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 17:58:34,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:58:34,822 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-10-19 17:58:34,823 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 [2020-10-19 17:58:34,824 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:34,833 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:34,838 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. [2020-10-19 17:58:34,840 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2020-10-19 17:58:34,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:34,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:58:34,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:34,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [468457048] [2020-10-19 17:58:34,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:58:34,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-19 17:58:34,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309377554] [2020-10-19 17:58:34,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 17:58:34,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 17:58:34,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 17:58:34,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 17:58:34,904 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand 3 states. [2020-10-19 17:58:35,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:35,041 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2020-10-19 17:58:35,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 17:58:35,042 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-19 17:58:35,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:35,044 INFO L225 Difference]: With dead ends: 57 [2020-10-19 17:58:35,044 INFO L226 Difference]: Without dead ends: 57 [2020-10-19 17:58:35,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 17:58:35,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-19 17:58:35,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-19 17:58:35,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-19 17:58:35,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2020-10-19 17:58:35,063 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 11 [2020-10-19 17:58:35,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:35,064 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2020-10-19 17:58:35,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 17:58:35,064 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2020-10-19 17:58:35,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 17:58:35,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:35,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:35,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-19 17:58:35,279 INFO L429 AbstractCegarLoop]: === Iteration 3 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:58:35,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:35,280 INFO L82 PathProgramCache]: Analyzing trace with hash -644418098, now seen corresponding path program 1 times [2020-10-19 17:58:35,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:58:35,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1782328086] [2020-10-19 17:58:35,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-19 17:58:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:35,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 17:58:35,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:58:35,479 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:35,480 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 25 [2020-10-19 17:58:35,481 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:35,545 INFO L625 ElimStorePlain]: treesize reduction 10, result has 71.4 percent of original size [2020-10-19 17:58:35,550 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:58:35,551 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:20, output treesize:13 [2020-10-19 17:58:35,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:35,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:58:35,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:35,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1782328086] [2020-10-19 17:58:35,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:58:35,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-19 17:58:35,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732322470] [2020-10-19 17:58:35,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 17:58:35,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 17:58:35,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 17:58:35,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 17:58:35,750 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand 6 states. [2020-10-19 17:58:36,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:36,268 INFO L93 Difference]: Finished difference Result 77 states and 89 transitions. [2020-10-19 17:58:36,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 17:58:36,270 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-10-19 17:58:36,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:36,271 INFO L225 Difference]: With dead ends: 77 [2020-10-19 17:58:36,271 INFO L226 Difference]: Without dead ends: 77 [2020-10-19 17:58:36,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-19 17:58:36,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-19 17:58:36,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 59. [2020-10-19 17:58:36,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-19 17:58:36,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2020-10-19 17:58:36,281 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 11 [2020-10-19 17:58:36,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:36,281 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2020-10-19 17:58:36,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 17:58:36,282 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2020-10-19 17:58:36,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-19 17:58:36,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:36,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:36,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-19 17:58:36,498 INFO L429 AbstractCegarLoop]: === Iteration 4 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:58:36,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:36,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1709409699, now seen corresponding path program 1 times [2020-10-19 17:58:36,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:58:36,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [421818553] [2020-10-19 17:58:36,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-19 17:58:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:36,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 17:58:36,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:58:36,649 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-19 17:58:36,670 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:36,670 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 25 [2020-10-19 17:58:36,671 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:36,704 INFO L625 ElimStorePlain]: treesize reduction 14, result has 54.8 percent of original size [2020-10-19 17:58:36,706 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. [2020-10-19 17:58:36,707 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:17 [2020-10-19 17:58:36,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:36,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:58:36,846 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:36,905 INFO L625 ElimStorePlain]: treesize reduction 8, result has 63.6 percent of original size [2020-10-19 17:58:36,907 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2020-10-19 17:58:36,907 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:9 [2020-10-19 17:58:36,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:36,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [421818553] [2020-10-19 17:58:36,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:58:36,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-10-19 17:58:36,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460415023] [2020-10-19 17:58:36,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 17:58:36,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 17:58:36,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 17:58:36,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-19 17:58:36,977 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 8 states. [2020-10-19 17:58:37,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:37,778 INFO L93 Difference]: Finished difference Result 115 states and 131 transitions. [2020-10-19 17:58:37,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 17:58:37,779 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-10-19 17:58:37,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:37,781 INFO L225 Difference]: With dead ends: 115 [2020-10-19 17:58:37,782 INFO L226 Difference]: Without dead ends: 115 [2020-10-19 17:58:37,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-19 17:58:37,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-19 17:58:37,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 74. [2020-10-19 17:58:37,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-19 17:58:37,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2020-10-19 17:58:37,792 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 13 [2020-10-19 17:58:37,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:37,793 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2020-10-19 17:58:37,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 17:58:37,793 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2020-10-19 17:58:37,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-19 17:58:37,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:37,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:37,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-19 17:58:37,996 INFO L429 AbstractCegarLoop]: === Iteration 5 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:58:37,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:37,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1709409698, now seen corresponding path program 1 times [2020-10-19 17:58:37,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:58:37,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1857806623] [2020-10-19 17:58:37,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-19 17:58:38,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:38,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 17:58:38,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:58:38,143 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-10-19 17:58:38,144 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 [2020-10-19 17:58:38,144 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:38,150 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:38,151 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. [2020-10-19 17:58:38,152 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2020-10-19 17:58:38,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:38,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:58:38,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:38,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1857806623] [2020-10-19 17:58:38,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:58:38,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-19 17:58:38,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034915074] [2020-10-19 17:58:38,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 17:58:38,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 17:58:38,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 17:58:38,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 17:58:38,179 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand 3 states. [2020-10-19 17:58:38,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:38,273 INFO L93 Difference]: Finished difference Result 72 states and 88 transitions. [2020-10-19 17:58:38,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 17:58:38,273 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-19 17:58:38,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:38,274 INFO L225 Difference]: With dead ends: 72 [2020-10-19 17:58:38,274 INFO L226 Difference]: Without dead ends: 72 [2020-10-19 17:58:38,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 17:58:38,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-19 17:58:38,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-10-19 17:58:38,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-19 17:58:38,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 88 transitions. [2020-10-19 17:58:38,280 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 88 transitions. Word has length 13 [2020-10-19 17:58:38,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:38,280 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 88 transitions. [2020-10-19 17:58:38,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 17:58:38,281 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 88 transitions. [2020-10-19 17:58:38,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-19 17:58:38,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:38,282 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:38,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-19 17:58:38,484 INFO L429 AbstractCegarLoop]: === Iteration 6 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:58:38,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:38,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1709409752, now seen corresponding path program 1 times [2020-10-19 17:58:38,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:58:38,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1742354534] [2020-10-19 17:58:38,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-19 17:58:38,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:38,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 17:58:38,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:58:38,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:38,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:58:38,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:38,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1742354534] [2020-10-19 17:58:38,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:58:38,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-19 17:58:38,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52302950] [2020-10-19 17:58:38,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 17:58:38,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 17:58:38,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 17:58:38,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-19 17:58:38,630 INFO L87 Difference]: Start difference. First operand 72 states and 88 transitions. Second operand 6 states. [2020-10-19 17:58:38,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:38,715 INFO L93 Difference]: Finished difference Result 76 states and 89 transitions. [2020-10-19 17:58:38,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 17:58:38,715 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-19 17:58:38,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:38,717 INFO L225 Difference]: With dead ends: 76 [2020-10-19 17:58:38,718 INFO L226 Difference]: Without dead ends: 76 [2020-10-19 17:58:38,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-19 17:58:38,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-19 17:58:38,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 69. [2020-10-19 17:58:38,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-19 17:58:38,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 83 transitions. [2020-10-19 17:58:38,725 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 83 transitions. Word has length 13 [2020-10-19 17:58:38,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:38,725 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 83 transitions. [2020-10-19 17:58:38,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 17:58:38,726 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 83 transitions. [2020-10-19 17:58:38,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-19 17:58:38,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:38,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:38,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-19 17:58:38,929 INFO L429 AbstractCegarLoop]: === Iteration 7 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:58:38,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:38,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1766668001, now seen corresponding path program 1 times [2020-10-19 17:58:38,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:58:38,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377670684] [2020-10-19 17:58:38,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-19 17:58:39,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:39,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-19 17:58:39,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:58:39,087 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:39,087 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 25 [2020-10-19 17:58:39,088 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:39,150 INFO L625 ElimStorePlain]: treesize reduction 10, result has 68.8 percent of original size [2020-10-19 17:58:39,152 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:58:39,161 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. [2020-10-19 17:58:39,166 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:22 [2020-10-19 17:58:39,170 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:58:39,214 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:58:39,260 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:58:39,340 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:58:39,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:39,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 17:58:39,765 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:39,830 INFO L625 ElimStorePlain]: treesize reduction 14, result has 57.6 percent of original size [2020-10-19 17:58:39,832 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2020-10-19 17:58:39,833 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:29, output treesize:15 [2020-10-19 17:58:39,923 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 17:58:40,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:58:40,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377670684] [2020-10-19 17:58:40,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:58:40,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2020-10-19 17:58:40,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716358881] [2020-10-19 17:58:40,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 17:58:40,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 17:58:40,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 17:58:40,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-19 17:58:40,033 INFO L87 Difference]: Start difference. First operand 69 states and 83 transitions. Second operand 12 states. [2020-10-19 17:58:40,695 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 23 [2020-10-19 17:58:41,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:58:41,472 INFO L93 Difference]: Finished difference Result 95 states and 111 transitions. [2020-10-19 17:58:41,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 17:58:41,473 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2020-10-19 17:58:41,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:58:41,474 INFO L225 Difference]: With dead ends: 95 [2020-10-19 17:58:41,474 INFO L226 Difference]: Without dead ends: 95 [2020-10-19 17:58:41,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2020-10-19 17:58:41,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-19 17:58:41,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 70. [2020-10-19 17:58:41,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-19 17:58:41,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 85 transitions. [2020-10-19 17:58:41,483 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 85 transitions. Word has length 13 [2020-10-19 17:58:41,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:58:41,483 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 85 transitions. [2020-10-19 17:58:41,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 17:58:41,483 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 85 transitions. [2020-10-19 17:58:41,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-19 17:58:41,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:58:41,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:58:41,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-19 17:58:41,689 INFO L429 AbstractCegarLoop]: === Iteration 8 === [cstrlcpyErr3REQUIRES_VIOLATION, cstrlcpyErr2REQUIRES_VIOLATION, cstrlcpyErr4REQUIRES_VIOLATION, cstrlcpyErr0REQUIRES_VIOLATION, cstrlcpyErr5REQUIRES_VIOLATION, cstrlcpyErr7REQUIRES_VIOLATION, cstrlcpyErr1REQUIRES_VIOLATION, cstrlcpyErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:58:41,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:58:41,689 INFO L82 PathProgramCache]: Analyzing trace with hash -753291880, now seen corresponding path program 1 times [2020-10-19 17:58:41,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 17:58:41,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [518779360] [2020-10-19 17:58:41,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-10-19 17:58:41,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:41,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 17:58:41,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:58:41,810 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_32|], 1=[|v_#valid_61|]} [2020-10-19 17:58:41,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 17:58:41,820 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 9 treesize of output 11 [2020-10-19 17:58:41,820 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:41,844 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:41,854 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 [2020-10-19 17:58:41,855 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:41,873 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:41,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [518779360] [2020-10-19 17:58:41,878 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 17:58:41,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [204911044] [2020-10-19 17:58:41,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 17:58:42,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:42,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 17:58:42,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:58:42,098 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_33|], 1=[|v_#valid_62|]} [2020-10-19 17:58:42,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 17:58:42,107 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 9 treesize of output 11 [2020-10-19 17:58:42,108 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:42,135 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:42,147 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 [2020-10-19 17:58:42,149 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:42,176 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:42,178 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 17:58:42,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428119044] [2020-10-19 17:58:42,178 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 [2020-10-19 17:58:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:58:42,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-19 17:58:42,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:58:42,287 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_34|], 1=[|v_#valid_63|]} [2020-10-19 17:58:42,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 17:58:42,296 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 9 treesize of output 11 [2020-10-19 17:58:42,297 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:42,315 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:42,333 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 [2020-10-19 17:58:42,334 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 17:58:42,353 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:58:42,354 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 17:58:42,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:58:42,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-19 17:58:42,355 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-19 17:58:42,355 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 17:58:42,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3,10 cvc4 --incremental --print-success --lang smt --rewrite-divk,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:58:42,976 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-19 17:58:42,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 05:58:42 BoogieIcfgContainer [2020-10-19 17:58:42,976 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 17:58:42,977 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 17:58:42,977 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 17:58:42,977 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 17:58:42,978 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 05:58:33" (3/4) ... [2020-10-19 17:58:42,981 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 17:58:42,981 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 17:58:42,982 INFO L168 Benchmark]: Toolchain (without parser) took 10910.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 197.7 MB). Free memory was 958.6 MB in the beginning and 899.5 MB in the end (delta: 59.1 MB). Peak memory consumption was 256.7 MB. Max. memory is 11.5 GB. [2020-10-19 17:58:42,983 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 17:58:42,984 INFO L168 Benchmark]: CACSL2BoogieTranslator took 651.69 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 106.4 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -132.8 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. [2020-10-19 17:58:42,984 INFO L168 Benchmark]: Boogie Preprocessor took 83.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2020-10-19 17:58:42,985 INFO L168 Benchmark]: RCFGBuilder took 852.13 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. [2020-10-19 17:58:42,986 INFO L168 Benchmark]: TraceAbstraction took 9307.96 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 91.2 MB). Free memory was 1.0 GB in the beginning and 899.5 MB in the end (delta: 125.0 MB). Peak memory consumption was 216.2 MB. Max. memory is 11.5 GB. [2020-10-19 17:58:42,987 INFO L168 Benchmark]: Witness Printer took 3.87 ms. Allocated memory is still 1.2 GB. Free memory is still 899.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 17:58:42,990 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 651.69 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 106.4 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -132.8 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 83.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 852.13 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9307.96 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 91.2 MB). Free memory was 1.0 GB in the beginning and 899.5 MB in the end (delta: 125.0 MB). Peak memory consumption was 216.2 MB. Max. memory is 11.5 GB. * Witness Printer took 3.87 ms. Allocated memory is still 1.2 GB. Free memory is still 899.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L534] int length = __VERIFIER_nondet_int(); [L535] int n = __VERIFIER_nondet_int(); [L536] COND FALSE !(length < 1) [L539] COND FALSE !(n < 1) [L542] char* nondetString1 = (char*) __builtin_alloca (n * sizeof(char)); [L543] char* nondetString2 = (char*) __builtin_alloca (length * sizeof(char)); [L545] int i = 0; [L545] COND FALSE !(i < length - 1) [L550] int i = 0; [L550] COND TRUE i < n - 1 [L552] nondetString1[i] = __VERIFIER_nondet_char() - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 80 locations, 17 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 9.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 391 SDtfs, 547 SDslu, 872 SDs, 0 SdLazy, 386 SolverSat, 54 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 174 GetRequests, 131 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=4, 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, 7 MinimizatonAttempts, 108 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 156 ConstructedInterpolants, 4 QuantifiedInterpolants, 7754 SizeOfPredicates, 30 NumberOfNonLiveVariables, 341 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...