./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.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/forester-heap/sll-rb-cnstr_1-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0adf73b7dd596c46d6accaa4759d997d536c99cf ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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/forester-heap/sll-rb-cnstr_1-2.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 0adf73b7dd596c46d6accaa4759d997d536c99cf .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:13:33,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:13:33,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:13:33,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:13:33,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:13:33,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:13:33,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:13:33,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:13:33,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:13:33,890 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:13:33,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:13:33,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:13:33,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:13:33,899 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:13:33,900 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:13:33,903 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:13:33,905 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:13:33,906 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:13:33,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:13:33,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:13:33,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:13:33,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:13:33,921 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:13:33,922 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:13:33,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:13:33,938 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:13:33,939 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:13:33,940 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:13:33,941 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:13:33,945 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:13:33,945 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:13:33,946 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:13:33,949 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:13:33,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:13:33,951 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:13:33,952 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:13:33,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:13:33,953 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:13:33,953 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:13:33,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:13:33,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:13:33,956 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 18:13:33,995 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:13:33,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:13:33,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:13:33,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:13:33,998 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:13:33,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:13:33,999 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:13:33,999 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:13:34,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:13:34,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:13:34,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:13:34,002 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:13:34,002 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:13:34,002 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:13:34,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:13:34,003 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:13:34,003 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:13:34,004 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:13:34,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:13:34,004 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:13:34,004 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:13:34,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:13:34,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:13:34,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:13:34,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:13:34,006 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:13:34,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:13:34,006 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:13:34,007 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 -> 0adf73b7dd596c46d6accaa4759d997d536c99cf [2020-10-19 18:13:34,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:13:34,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:13:34,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:13:34,327 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:13:34,327 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:13:34,328 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2020-10-19 18:13:34,396 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19a53fd97/3be581143d19464f8e96d4cdd43640ce/FLAG42b0acc92 [2020-10-19 18:13:34,948 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:13:34,949 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2020-10-19 18:13:34,962 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19a53fd97/3be581143d19464f8e96d4cdd43640ce/FLAG42b0acc92 [2020-10-19 18:13:35,225 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19a53fd97/3be581143d19464f8e96d4cdd43640ce [2020-10-19 18:13:35,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:13:35,237 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:13:35,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:13:35,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:13:35,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:13:35,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:13:35" (1/1) ... [2020-10-19 18:13:35,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@698fed00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:13:35, skipping insertion in model container [2020-10-19 18:13:35,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:13:35" (1/1) ... [2020-10-19 18:13:35,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:13:35,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:13:35,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:13:35,733 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:13:35,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:13:35,864 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:13:35,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:13:35 WrapperNode [2020-10-19 18:13:35,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:13:35,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:13:35,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:13:35,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:13:35,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:13:35" (1/1) ... [2020-10-19 18:13:35,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:13:35" (1/1) ... [2020-10-19 18:13:35,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:13:35" (1/1) ... [2020-10-19 18:13:35,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:13:35" (1/1) ... [2020-10-19 18:13:35,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:13:35" (1/1) ... [2020-10-19 18:13:35,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:13:35" (1/1) ... [2020-10-19 18:13:35,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:13:35" (1/1) ... [2020-10-19 18:13:35,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:13:35,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:13:35,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:13:35,937 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:13:35,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:13:35" (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 18:13:36,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:13:36,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:13:36,009 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:13:36,009 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:13:36,010 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 18:13:36,010 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 18:13:36,010 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 18:13:36,010 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 18:13:36,010 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 18:13:36,011 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 18:13:36,011 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 18:13:36,011 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 18:13:36,011 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 18:13:36,011 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 18:13:36,012 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 18:13:36,012 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 18:13:36,012 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 18:13:36,012 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 18:13:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 18:13:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 18:13:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 18:13:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 18:13:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 18:13:36,014 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 18:13:36,014 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 18:13:36,014 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 18:13:36,014 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 18:13:36,015 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 18:13:36,015 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 18:13:36,015 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 18:13:36,015 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 18:13:36,015 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 18:13:36,016 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 18:13:36,016 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 18:13:36,016 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 18:13:36,016 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 18:13:36,017 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 18:13:36,017 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 18:13:36,017 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 18:13:36,017 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 18:13:36,018 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 18:13:36,018 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 18:13:36,018 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 18:13:36,018 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 18:13:36,019 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 18:13:36,019 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 18:13:36,019 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 18:13:36,019 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 18:13:36,019 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 18:13:36,020 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 18:13:36,020 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 18:13:36,020 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 18:13:36,020 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 18:13:36,020 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 18:13:36,021 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 18:13:36,021 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 18:13:36,021 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 18:13:36,021 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 18:13:36,022 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-19 18:13:36,022 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 18:13:36,022 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 18:13:36,022 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 18:13:36,022 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 18:13:36,023 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:13:36,023 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 18:13:36,023 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 18:13:36,023 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 18:13:36,024 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 18:13:36,024 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 18:13:36,024 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 18:13:36,024 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 18:13:36,025 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 18:13:36,025 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 18:13:36,025 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 18:13:36,025 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 18:13:36,025 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 18:13:36,026 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 18:13:36,026 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 18:13:36,026 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 18:13:36,026 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 18:13:36,027 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 18:13:36,027 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 18:13:36,027 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 18:13:36,027 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 18:13:36,027 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 18:13:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 18:13:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 18:13:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 18:13:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 18:13:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 18:13:36,029 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 18:13:36,029 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 18:13:36,029 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 18:13:36,029 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 18:13:36,030 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 18:13:36,030 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 18:13:36,030 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 18:13:36,030 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 18:13:36,030 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 18:13:36,031 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 18:13:36,031 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 18:13:36,031 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 18:13:36,031 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 18:13:36,031 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 18:13:36,032 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 18:13:36,032 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 18:13:36,032 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 18:13:36,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:13:36,032 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:13:36,033 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-19 18:13:36,033 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-19 18:13:36,033 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:13:36,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:13:36,033 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:13:36,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:13:36,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 18:13:36,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 18:13:36,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 18:13:36,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 18:13:36,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:13:36,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:13:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:13:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:13:36,683 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:13:36,685 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-19 18:13:36,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:13:36 BoogieIcfgContainer [2020-10-19 18:13:36,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:13:36,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:13:36,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:13:36,694 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:13:36,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:13:35" (1/3) ... [2020-10-19 18:13:36,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@783c068d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:13:36, skipping insertion in model container [2020-10-19 18:13:36,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:13:35" (2/3) ... [2020-10-19 18:13:36,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@783c068d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:13:36, skipping insertion in model container [2020-10-19 18:13:36,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:13:36" (3/3) ... [2020-10-19 18:13:36,704 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2020-10-19 18:13:36,717 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:13:36,726 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 53 error locations. [2020-10-19 18:13:36,742 INFO L253 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2020-10-19 18:13:36,768 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:13:36,768 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:13:36,769 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:13:36,769 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:13:36,769 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:13:36,778 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:13:36,778 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:13:36,779 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:13:36,808 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states. [2020-10-19 18:13:36,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-19 18:13:36,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:36,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:36,818 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:13:36,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:36,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1473888481, now seen corresponding path program 1 times [2020-10-19 18:13:36,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:36,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403951014] [2020-10-19 18:13:36,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:36,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:37,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:37,064 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 18:13:37,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403951014] [2020-10-19 18:13:37,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:37,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:13:37,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200105469] [2020-10-19 18:13:37,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:13:37,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:37,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:13:37,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:13:37,092 INFO L87 Difference]: Start difference. First operand 129 states. Second operand 4 states. [2020-10-19 18:13:37,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:37,432 INFO L93 Difference]: Finished difference Result 125 states and 133 transitions. [2020-10-19 18:13:37,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:13:37,434 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-19 18:13:37,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:37,446 INFO L225 Difference]: With dead ends: 125 [2020-10-19 18:13:37,446 INFO L226 Difference]: Without dead ends: 121 [2020-10-19 18:13:37,448 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 18:13:37,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-19 18:13:37,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 117. [2020-10-19 18:13:37,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-19 18:13:37,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 126 transitions. [2020-10-19 18:13:37,499 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 126 transitions. Word has length 7 [2020-10-19 18:13:37,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:37,500 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 126 transitions. [2020-10-19 18:13:37,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:13:37,501 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 126 transitions. [2020-10-19 18:13:37,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-19 18:13:37,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:37,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:37,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:13:37,503 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:13:37,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:37,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1473888482, now seen corresponding path program 1 times [2020-10-19 18:13:37,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:37,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992953826] [2020-10-19 18:13:37,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:37,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:37,594 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 18:13:37,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992953826] [2020-10-19 18:13:37,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:37,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:13:37,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159489083] [2020-10-19 18:13:37,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:13:37,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:37,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:13:37,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:13:37,599 INFO L87 Difference]: Start difference. First operand 117 states and 126 transitions. Second operand 4 states. [2020-10-19 18:13:37,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:37,869 INFO L93 Difference]: Finished difference Result 135 states and 143 transitions. [2020-10-19 18:13:37,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:13:37,870 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-19 18:13:37,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:37,872 INFO L225 Difference]: With dead ends: 135 [2020-10-19 18:13:37,872 INFO L226 Difference]: Without dead ends: 135 [2020-10-19 18:13:37,873 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 18:13:37,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-19 18:13:37,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 122. [2020-10-19 18:13:37,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-19 18:13:37,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 131 transitions. [2020-10-19 18:13:37,886 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 131 transitions. Word has length 7 [2020-10-19 18:13:37,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:37,886 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 131 transitions. [2020-10-19 18:13:37,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:13:37,887 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 131 transitions. [2020-10-19 18:13:37,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-19 18:13:37,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:37,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:37,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:13:37,889 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:13:37,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:37,890 INFO L82 PathProgramCache]: Analyzing trace with hash -916999114, now seen corresponding path program 1 times [2020-10-19 18:13:37,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:37,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791316671] [2020-10-19 18:13:37,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:37,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:38,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:38,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:38,042 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 18:13:38,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791316671] [2020-10-19 18:13:38,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:38,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:13:38,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230655510] [2020-10-19 18:13:38,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:13:38,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:38,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:13:38,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:13:38,054 INFO L87 Difference]: Start difference. First operand 122 states and 131 transitions. Second operand 5 states. [2020-10-19 18:13:38,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:38,361 INFO L93 Difference]: Finished difference Result 129 states and 139 transitions. [2020-10-19 18:13:38,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:13:38,362 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-19 18:13:38,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:38,364 INFO L225 Difference]: With dead ends: 129 [2020-10-19 18:13:38,364 INFO L226 Difference]: Without dead ends: 129 [2020-10-19 18:13:38,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:13:38,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-19 18:13:38,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 114. [2020-10-19 18:13:38,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-19 18:13:38,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 126 transitions. [2020-10-19 18:13:38,375 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 126 transitions. Word has length 12 [2020-10-19 18:13:38,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:38,376 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 126 transitions. [2020-10-19 18:13:38,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:13:38,376 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 126 transitions. [2020-10-19 18:13:38,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-19 18:13:38,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:38,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:38,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:13:38,378 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:13:38,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:38,379 INFO L82 PathProgramCache]: Analyzing trace with hash -916999113, now seen corresponding path program 1 times [2020-10-19 18:13:38,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:38,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528959012] [2020-10-19 18:13:38,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:38,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:38,523 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 18:13:38,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528959012] [2020-10-19 18:13:38,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:38,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:13:38,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341035131] [2020-10-19 18:13:38,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:13:38,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:38,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:13:38,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:13:38,527 INFO L87 Difference]: Start difference. First operand 114 states and 126 transitions. Second operand 5 states. [2020-10-19 18:13:38,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:38,854 INFO L93 Difference]: Finished difference Result 151 states and 165 transitions. [2020-10-19 18:13:38,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:13:38,855 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-19 18:13:38,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:38,856 INFO L225 Difference]: With dead ends: 151 [2020-10-19 18:13:38,856 INFO L226 Difference]: Without dead ends: 151 [2020-10-19 18:13:38,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:13:38,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-19 18:13:38,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 123. [2020-10-19 18:13:38,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-19 18:13:38,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 137 transitions. [2020-10-19 18:13:38,873 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 137 transitions. Word has length 12 [2020-10-19 18:13:38,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:38,873 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 137 transitions. [2020-10-19 18:13:38,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:13:38,873 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 137 transitions. [2020-10-19 18:13:38,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-19 18:13:38,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:38,874 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:38,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 18:13:38,875 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:13:38,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:38,875 INFO L82 PathProgramCache]: Analyzing trace with hash 808964045, now seen corresponding path program 1 times [2020-10-19 18:13:38,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:38,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088557757] [2020-10-19 18:13:38,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:38,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:38,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:38,962 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 18:13:38,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088557757] [2020-10-19 18:13:38,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:38,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:13:38,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486455814] [2020-10-19 18:13:38,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:13:38,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:38,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:13:38,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:13:38,969 INFO L87 Difference]: Start difference. First operand 123 states and 137 transitions. Second operand 5 states. [2020-10-19 18:13:39,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:39,252 INFO L93 Difference]: Finished difference Result 137 states and 148 transitions. [2020-10-19 18:13:39,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:13:39,254 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-19 18:13:39,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:39,255 INFO L225 Difference]: With dead ends: 137 [2020-10-19 18:13:39,255 INFO L226 Difference]: Without dead ends: 137 [2020-10-19 18:13:39,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:13:39,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-19 18:13:39,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 122. [2020-10-19 18:13:39,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-19 18:13:39,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 133 transitions. [2020-10-19 18:13:39,263 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 133 transitions. Word has length 16 [2020-10-19 18:13:39,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:39,263 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 133 transitions. [2020-10-19 18:13:39,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:13:39,263 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 133 transitions. [2020-10-19 18:13:39,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 18:13:39,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:39,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:39,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 18:13:39,265 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:13:39,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:39,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1966366765, now seen corresponding path program 1 times [2020-10-19 18:13:39,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:39,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748398521] [2020-10-19 18:13:39,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:39,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:39,339 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 18:13:39,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748398521] [2020-10-19 18:13:39,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:39,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:13:39,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770281833] [2020-10-19 18:13:39,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:13:39,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:39,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:13:39,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:13:39,342 INFO L87 Difference]: Start difference. First operand 122 states and 133 transitions. Second operand 7 states. [2020-10-19 18:13:39,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:39,844 INFO L93 Difference]: Finished difference Result 175 states and 192 transitions. [2020-10-19 18:13:39,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:13:39,845 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-19 18:13:39,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:39,846 INFO L225 Difference]: With dead ends: 175 [2020-10-19 18:13:39,846 INFO L226 Difference]: Without dead ends: 175 [2020-10-19 18:13:39,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:13:39,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-19 18:13:39,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 121. [2020-10-19 18:13:39,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-19 18:13:39,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 132 transitions. [2020-10-19 18:13:39,860 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 132 transitions. Word has length 15 [2020-10-19 18:13:39,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:39,860 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 132 transitions. [2020-10-19 18:13:39,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:13:39,861 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 132 transitions. [2020-10-19 18:13:39,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 18:13:39,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:39,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:39,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 18:13:39,862 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:13:39,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:39,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1966366766, now seen corresponding path program 1 times [2020-10-19 18:13:39,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:39,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660272986] [2020-10-19 18:13:39,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:40,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:40,020 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 18:13:40,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660272986] [2020-10-19 18:13:40,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:40,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:13:40,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498478261] [2020-10-19 18:13:40,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:13:40,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:40,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:13:40,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:13:40,024 INFO L87 Difference]: Start difference. First operand 121 states and 132 transitions. Second operand 7 states. [2020-10-19 18:13:40,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:40,598 INFO L93 Difference]: Finished difference Result 201 states and 222 transitions. [2020-10-19 18:13:40,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:13:40,598 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-19 18:13:40,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:40,600 INFO L225 Difference]: With dead ends: 201 [2020-10-19 18:13:40,600 INFO L226 Difference]: Without dead ends: 201 [2020-10-19 18:13:40,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:13:40,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-19 18:13:40,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 116. [2020-10-19 18:13:40,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-19 18:13:40,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 127 transitions. [2020-10-19 18:13:40,606 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 127 transitions. Word has length 15 [2020-10-19 18:13:40,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:40,606 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 127 transitions. [2020-10-19 18:13:40,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:13:40,607 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 127 transitions. [2020-10-19 18:13:40,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-19 18:13:40,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:40,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:40,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 18:13:40,608 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:13:40,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:40,609 INFO L82 PathProgramCache]: Analyzing trace with hash 611018003, now seen corresponding path program 1 times [2020-10-19 18:13:40,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:40,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071418808] [2020-10-19 18:13:40,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:40,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:40,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:40,704 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 18:13:40,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071418808] [2020-10-19 18:13:40,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:40,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 18:13:40,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124990108] [2020-10-19 18:13:40,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:13:40,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:40,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:13:40,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:13:40,707 INFO L87 Difference]: Start difference. First operand 116 states and 127 transitions. Second operand 7 states. [2020-10-19 18:13:41,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:41,075 INFO L93 Difference]: Finished difference Result 177 states and 196 transitions. [2020-10-19 18:13:41,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:13:41,076 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-19 18:13:41,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:41,078 INFO L225 Difference]: With dead ends: 177 [2020-10-19 18:13:41,078 INFO L226 Difference]: Without dead ends: 177 [2020-10-19 18:13:41,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:13:41,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-19 18:13:41,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 123. [2020-10-19 18:13:41,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-19 18:13:41,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 135 transitions. [2020-10-19 18:13:41,086 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 135 transitions. Word has length 19 [2020-10-19 18:13:41,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:41,087 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 135 transitions. [2020-10-19 18:13:41,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:13:41,087 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 135 transitions. [2020-10-19 18:13:41,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 18:13:41,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:41,088 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 18:13:41,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 18:13:41,089 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:13:41,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:41,089 INFO L82 PathProgramCache]: Analyzing trace with hash 655601984, now seen corresponding path program 1 times [2020-10-19 18:13:41,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:41,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77895724] [2020-10-19 18:13:41,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:41,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:41,272 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 18:13:41,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77895724] [2020-10-19 18:13:41,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:41,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:13:41,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703871160] [2020-10-19 18:13:41,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:13:41,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:41,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:13:41,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:13:41,277 INFO L87 Difference]: Start difference. First operand 123 states and 135 transitions. Second operand 6 states. [2020-10-19 18:13:41,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:41,554 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2020-10-19 18:13:41,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:13:41,555 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-19 18:13:41,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:41,556 INFO L225 Difference]: With dead ends: 127 [2020-10-19 18:13:41,556 INFO L226 Difference]: Without dead ends: 127 [2020-10-19 18:13:41,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:13:41,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-19 18:13:41,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 122. [2020-10-19 18:13:41,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-19 18:13:41,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 133 transitions. [2020-10-19 18:13:41,562 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 133 transitions. Word has length 23 [2020-10-19 18:13:41,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:41,563 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 133 transitions. [2020-10-19 18:13:41,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:13:41,563 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 133 transitions. [2020-10-19 18:13:41,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 18:13:41,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:41,568 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 18:13:41,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 18:13:41,569 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:13:41,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:41,570 INFO L82 PathProgramCache]: Analyzing trace with hash 83488924, now seen corresponding path program 1 times [2020-10-19 18:13:41,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:41,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766632667] [2020-10-19 18:13:41,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:41,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:41,691 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 18:13:41,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766632667] [2020-10-19 18:13:41,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:41,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:13:41,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162872688] [2020-10-19 18:13:41,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:13:41,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:41,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:13:41,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:13:41,694 INFO L87 Difference]: Start difference. First operand 122 states and 133 transitions. Second operand 7 states. [2020-10-19 18:13:42,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:42,220 INFO L93 Difference]: Finished difference Result 186 states and 204 transitions. [2020-10-19 18:13:42,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:13:42,220 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-19 18:13:42,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:42,224 INFO L225 Difference]: With dead ends: 186 [2020-10-19 18:13:42,224 INFO L226 Difference]: Without dead ends: 186 [2020-10-19 18:13:42,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 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 18:13:42,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-19 18:13:42,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 121. [2020-10-19 18:13:42,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-19 18:13:42,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 132 transitions. [2020-10-19 18:13:42,230 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 132 transitions. Word has length 23 [2020-10-19 18:13:42,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:42,231 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 132 transitions. [2020-10-19 18:13:42,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:13:42,231 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 132 transitions. [2020-10-19 18:13:42,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 18:13:42,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:42,232 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 18:13:42,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 18:13:42,234 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:13:42,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:42,235 INFO L82 PathProgramCache]: Analyzing trace with hash 83488925, now seen corresponding path program 1 times [2020-10-19 18:13:42,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:42,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485859928] [2020-10-19 18:13:42,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:42,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:42,374 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 18:13:42,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485859928] [2020-10-19 18:13:42,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:42,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:13:42,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809970435] [2020-10-19 18:13:42,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:13:42,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:42,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:13:42,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:13:42,376 INFO L87 Difference]: Start difference. First operand 121 states and 132 transitions. Second operand 7 states. [2020-10-19 18:13:42,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:42,913 INFO L93 Difference]: Finished difference Result 208 states and 229 transitions. [2020-10-19 18:13:42,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:13:42,914 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-19 18:13:42,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:42,915 INFO L225 Difference]: With dead ends: 208 [2020-10-19 18:13:42,916 INFO L226 Difference]: Without dead ends: 208 [2020-10-19 18:13:42,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:13:42,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-19 18:13:42,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 113. [2020-10-19 18:13:42,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-19 18:13:42,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 123 transitions. [2020-10-19 18:13:42,921 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 123 transitions. Word has length 23 [2020-10-19 18:13:42,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:42,921 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 123 transitions. [2020-10-19 18:13:42,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:13:42,922 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 123 transitions. [2020-10-19 18:13:42,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 18:13:42,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:42,923 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 18:13:42,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-19 18:13:42,923 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:13:42,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:42,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1027853199, now seen corresponding path program 1 times [2020-10-19 18:13:42,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:42,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729098355] [2020-10-19 18:13:42,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:42,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:13:42,937 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:13:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:13:42,948 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:13:42,979 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:13:42,980 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:13:42,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-19 18:13:43,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:13:43 BoogieIcfgContainer [2020-10-19 18:13:43,019 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:13:43,020 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:13:43,020 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:13:43,020 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:13:43,021 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:13:36" (3/4) ... [2020-10-19 18:13:43,026 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 18:13:43,026 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:13:43,029 INFO L168 Benchmark]: Toolchain (without parser) took 7796.74 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 303.6 MB). Free memory was 958.6 MB in the beginning and 1.2 GB in the end (delta: -232.5 MB). Peak memory consumption was 71.0 MB. Max. memory is 11.5 GB. [2020-10-19 18:13:43,030 INFO L168 Benchmark]: CDTParser took 0.14 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 18:13:43,031 INFO L168 Benchmark]: CACSL2BoogieTranslator took 627.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -169.1 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2020-10-19 18:13:43,032 INFO L168 Benchmark]: Boogie Preprocessor took 70.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:13:43,032 INFO L168 Benchmark]: RCFGBuilder took 752.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 64.8 MB). Peak memory consumption was 64.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:13:43,033 INFO L168 Benchmark]: TraceAbstraction took 6329.43 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 162.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -140.2 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:13:43,034 INFO L168 Benchmark]: Witness Printer took 6.11 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:13:43,038 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 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 627.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -169.1 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 70.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 752.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 64.8 MB). Peak memory consumption was 64.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6329.43 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 162.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -140.2 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. * Witness Printer took 6.11 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 993]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 993. Possible FailurePath: [L1006] SLL* list = malloc(sizeof(SLL)); VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1007] list->next = ((void*)0) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1008] list->colour = BLACK VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1010] SLL* end = list; VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1034] end = ((void*)0) [L1035] end = list VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1038] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1039] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1039] COND FALSE !(!(BLACK == end->colour)) [L1041] COND TRUE ((void*)0) != end VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1043] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1043] COND FALSE !(RED == end->colour) [L1049] EXPR end->next VAL [end={-1:0}, end->next={0:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1049] COND TRUE !(end->next) [L1049] CALL reach_error() [L993] COND FALSE !(0) [L993] __assert_fail ("0", "sll-rb-cnstr_1-2.c", 13, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 129 locations, 53 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.2s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 972 SDtfs, 1249 SDslu, 1553 SDs, 0 SdLazy, 3545 SolverSat, 159 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 433 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 197 NumberOfCodeBlocks, 197 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 161 ConstructedInterpolants, 0 QuantifiedInterpolants, 12018 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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... ### Bit-precise run ### This is Ultimate 0.1.25-906a4fb [2020-10-19 18:13:45,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:13:45,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:13:45,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:13:45,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:13:45,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:13:45,091 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:13:45,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:13:45,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:13:45,099 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:13:45,101 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:13:45,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:13:45,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:13:45,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:13:45,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:13:45,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:13:45,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:13:45,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:13:45,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:13:45,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:13:45,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:13:45,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:13:45,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:13:45,119 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:13:45,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:13:45,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:13:45,122 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:13:45,123 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:13:45,124 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:13:45,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:13:45,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:13:45,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:13:45,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:13:45,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:13:45,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:13:45,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:13:45,130 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:13:45,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:13:45,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:13:45,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:13:45,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:13:45,133 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-19 18:13:45,158 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:13:45,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:13:45,160 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:13:45,160 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:13:45,160 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:13:45,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:13:45,161 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:13:45,161 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:13:45,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:13:45,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:13:45,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:13:45,162 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:13:45,163 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:13:45,163 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:13:45,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:13:45,163 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:13:45,164 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-19 18:13:45,164 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-19 18:13:45,164 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:13:45,164 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:13:45,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:13:45,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:13:45,165 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:13:45,166 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:13:45,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:13:45,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:13:45,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:13:45,167 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-19 18:13:45,167 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-19 18:13:45,167 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:13:45,168 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-19 18:13:45,168 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 -> 0adf73b7dd596c46d6accaa4759d997d536c99cf [2020-10-19 18:13:45,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:13:45,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:13:45,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:13:45,539 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:13:45,541 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:13:45,542 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2020-10-19 18:13:45,605 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f0210500/53ea7a8729de41b19720922232a74e69/FLAGe33e9556c [2020-10-19 18:13:46,198 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:13:46,199 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2020-10-19 18:13:46,220 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f0210500/53ea7a8729de41b19720922232a74e69/FLAGe33e9556c [2020-10-19 18:13:46,445 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f0210500/53ea7a8729de41b19720922232a74e69 [2020-10-19 18:13:46,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:13:46,454 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:13:46,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:13:46,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:13:46,460 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:13:46,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:13:46" (1/1) ... [2020-10-19 18:13:46,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23be281c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:13:46, skipping insertion in model container [2020-10-19 18:13:46,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:13:46" (1/1) ... [2020-10-19 18:13:46,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:13:46,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:13:46,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:13:46,928 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:13:46,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:13:47,047 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:13:47,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:13:47 WrapperNode [2020-10-19 18:13:47,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:13:47,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:13:47,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:13:47,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:13:47,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:13:47" (1/1) ... [2020-10-19 18:13:47,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:13:47" (1/1) ... [2020-10-19 18:13:47,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:13:47" (1/1) ... [2020-10-19 18:13:47,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:13:47" (1/1) ... [2020-10-19 18:13:47,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:13:47" (1/1) ... [2020-10-19 18:13:47,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:13:47" (1/1) ... [2020-10-19 18:13:47,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:13:47" (1/1) ... [2020-10-19 18:13:47,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:13:47,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:13:47,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:13:47,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:13:47,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:13:47" (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 18:13:47,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:13:47,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:13:47,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-10-19 18:13:47,208 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:13:47,208 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:13:47,208 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 18:13:47,208 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 18:13:47,208 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 18:13:47,209 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 18:13:47,209 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 18:13:47,209 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 18:13:47,209 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 18:13:47,209 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 18:13:47,209 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 18:13:47,209 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 18:13:47,210 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 18:13:47,210 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 18:13:47,210 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 18:13:47,210 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 18:13:47,210 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 18:13:47,210 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 18:13:47,210 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 18:13:47,211 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 18:13:47,211 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 18:13:47,211 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 18:13:47,211 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 18:13:47,211 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 18:13:47,211 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 18:13:47,211 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 18:13:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 18:13:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 18:13:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 18:13:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 18:13:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 18:13:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 18:13:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 18:13:47,213 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 18:13:47,213 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 18:13:47,213 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 18:13:47,213 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 18:13:47,213 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 18:13:47,213 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 18:13:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 18:13:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 18:13:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 18:13:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 18:13:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 18:13:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 18:13:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 18:13:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 18:13:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 18:13:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 18:13:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 18:13:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 18:13:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 18:13:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 18:13:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 18:13:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 18:13:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 18:13:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-19 18:13:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 18:13:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 18:13:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 18:13:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 18:13:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:13:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 18:13:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 18:13:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 18:13:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 18:13:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 18:13:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 18:13:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 18:13:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 18:13:47,219 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 18:13:47,219 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 18:13:47,219 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 18:13:47,219 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 18:13:47,219 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 18:13:47,219 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 18:13:47,220 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 18:13:47,220 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 18:13:47,220 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 18:13:47,220 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 18:13:47,220 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 18:13:47,220 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 18:13:47,221 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 18:13:47,221 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 18:13:47,221 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 18:13:47,221 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 18:13:47,221 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 18:13:47,221 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 18:13:47,221 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 18:13:47,222 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 18:13:47,222 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 18:13:47,222 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 18:13:47,222 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 18:13:47,222 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 18:13:47,222 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 18:13:47,222 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 18:13:47,222 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 18:13:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 18:13:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 18:13:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 18:13:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 18:13:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 18:13:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 18:13:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 18:13:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 18:13:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:13:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:13:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-19 18:13:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-19 18:13:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:13:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:13:47,225 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:13:47,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:13:47,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 18:13:47,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-19 18:13:47,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 18:13:47,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-19 18:13:47,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:13:47,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:13:47,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-19 18:13:47,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:13:47,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-10-19 18:13:47,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-19 18:13:47,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-19 18:13:48,069 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:13:48,070 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-19 18:13:48,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:13:48 BoogieIcfgContainer [2020-10-19 18:13:48,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:13:48,074 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:13:48,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:13:48,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:13:48,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:13:46" (1/3) ... [2020-10-19 18:13:48,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30cc424e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:13:48, skipping insertion in model container [2020-10-19 18:13:48,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:13:47" (2/3) ... [2020-10-19 18:13:48,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30cc424e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:13:48, skipping insertion in model container [2020-10-19 18:13:48,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:13:48" (3/3) ... [2020-10-19 18:13:48,082 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2020-10-19 18:13:48,096 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:13:48,106 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 53 error locations. [2020-10-19 18:13:48,123 INFO L253 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2020-10-19 18:13:48,147 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:13:48,148 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:13:48,148 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:13:48,148 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:13:48,149 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:13:48,149 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:13:48,149 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:13:48,149 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:13:48,171 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states. [2020-10-19 18:13:48,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-19 18:13:48,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:48,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:48,184 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:13:48,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:48,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1600099851, now seen corresponding path program 1 times [2020-10-19 18:13:48,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:13:48,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670368667] [2020-10-19 18:13:48,205 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 18:13:48,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:48,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 18:13:48,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:13:48,459 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:13:48,460 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:48,471 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:48,472 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:48,473 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:13:48,485 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 18:13:48,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:13:48,505 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 18:13:48,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670368667] [2020-10-19 18:13:48,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:48,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-19 18:13:48,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355518113] [2020-10-19 18:13:48,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:13:48,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:13:48,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:13:48,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:13:48,534 INFO L87 Difference]: Start difference. First operand 127 states. Second operand 3 states. [2020-10-19 18:13:48,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:48,857 INFO L93 Difference]: Finished difference Result 123 states and 131 transitions. [2020-10-19 18:13:48,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:13:48,859 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-19 18:13:48,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:48,871 INFO L225 Difference]: With dead ends: 123 [2020-10-19 18:13:48,871 INFO L226 Difference]: Without dead ends: 119 [2020-10-19 18:13:48,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 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 18:13:48,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-19 18:13:48,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2020-10-19 18:13:48,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-19 18:13:48,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 124 transitions. [2020-10-19 18:13:48,929 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 124 transitions. Word has length 7 [2020-10-19 18:13:48,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:48,929 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 124 transitions. [2020-10-19 18:13:48,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:13:48,930 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 124 transitions. [2020-10-19 18:13:48,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-19 18:13:48,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:48,931 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:49,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-19 18:13:49,144 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:13:49,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:49,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1600099850, now seen corresponding path program 1 times [2020-10-19 18:13:49,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:13:49,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129442684] [2020-10-19 18:13:49,147 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 18:13:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:49,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:13:49,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:13:49,283 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:13:49,284 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:49,290 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:49,291 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:49,291 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:13:49,302 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 18:13:49,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:13:49,358 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 18:13:49,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129442684] [2020-10-19 18:13:49,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:49,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-10-19 18:13:49,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146417246] [2020-10-19 18:13:49,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:13:49,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:13:49,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:13:49,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:13:49,362 INFO L87 Difference]: Start difference. First operand 115 states and 124 transitions. Second operand 4 states. [2020-10-19 18:13:49,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:49,798 INFO L93 Difference]: Finished difference Result 133 states and 141 transitions. [2020-10-19 18:13:49,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:13:49,800 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-19 18:13:49,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:49,802 INFO L225 Difference]: With dead ends: 133 [2020-10-19 18:13:49,802 INFO L226 Difference]: Without dead ends: 133 [2020-10-19 18:13:49,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:13:49,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-19 18:13:49,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 120. [2020-10-19 18:13:49,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-19 18:13:49,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 129 transitions. [2020-10-19 18:13:49,815 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 129 transitions. Word has length 7 [2020-10-19 18:13:49,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:49,815 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 129 transitions. [2020-10-19 18:13:49,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:13:49,816 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 129 transitions. [2020-10-19 18:13:49,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 18:13:49,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:49,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:50,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-19 18:13:50,038 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:13:50,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:50,040 INFO L82 PathProgramCache]: Analyzing trace with hash 633585145, now seen corresponding path program 1 times [2020-10-19 18:13:50,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:13:50,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [188879854] [2020-10-19 18:13:50,048 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 18:13:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:50,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:13:50,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:13:50,199 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:13:50,200 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:50,202 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:50,203 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:50,203 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:13:50,243 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:50,244 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 14 treesize of output 30 [2020-10-19 18:13:50,246 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:50,269 INFO L625 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2020-10-19 18:13:50,271 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 18:13:50,271 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:11 [2020-10-19 18:13:50,282 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 18:13:50,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:13:50,311 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 18:13:50,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [188879854] [2020-10-19 18:13:50,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:50,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-19 18:13:50,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632720335] [2020-10-19 18:13:50,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:13:50,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:13:50,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:13:50,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:13:50,313 INFO L87 Difference]: Start difference. First operand 120 states and 129 transitions. Second operand 4 states. [2020-10-19 18:13:50,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:50,744 INFO L93 Difference]: Finished difference Result 127 states and 137 transitions. [2020-10-19 18:13:50,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:13:50,747 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-19 18:13:50,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:50,749 INFO L225 Difference]: With dead ends: 127 [2020-10-19 18:13:50,749 INFO L226 Difference]: Without dead ends: 127 [2020-10-19 18:13:50,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:13:50,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-19 18:13:50,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 112. [2020-10-19 18:13:50,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-19 18:13:50,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 124 transitions. [2020-10-19 18:13:50,764 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 124 transitions. Word has length 11 [2020-10-19 18:13:50,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:50,765 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 124 transitions. [2020-10-19 18:13:50,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:13:50,765 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 124 transitions. [2020-10-19 18:13:50,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 18:13:50,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:50,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:50,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-19 18:13:50,987 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:13:50,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:50,988 INFO L82 PathProgramCache]: Analyzing trace with hash 633585146, now seen corresponding path program 1 times [2020-10-19 18:13:50,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:13:50,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [613244383] [2020-10-19 18:13:50,990 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 18:13:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:51,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 18:13:51,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:13:51,147 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:13:51,148 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:51,156 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:51,156 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:51,157 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:13:51,225 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:51,226 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 28 [2020-10-19 18:13:51,227 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:51,256 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2020-10-19 18:13:51,257 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 18:13:51,258 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:14 [2020-10-19 18:13:51,269 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 18:13:51,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:13:51,512 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 18:13:51,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [613244383] [2020-10-19 18:13:51,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:51,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6 [2020-10-19 18:13:51,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502598696] [2020-10-19 18:13:51,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:13:51,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:13:51,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:13:51,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:13:51,514 INFO L87 Difference]: Start difference. First operand 112 states and 124 transitions. Second operand 7 states. [2020-10-19 18:13:52,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:52,637 INFO L93 Difference]: Finished difference Result 159 states and 174 transitions. [2020-10-19 18:13:52,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:13:52,638 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-10-19 18:13:52,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:52,640 INFO L225 Difference]: With dead ends: 159 [2020-10-19 18:13:52,640 INFO L226 Difference]: Without dead ends: 159 [2020-10-19 18:13:52,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:13:52,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-19 18:13:52,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 113. [2020-10-19 18:13:52,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-19 18:13:52,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 126 transitions. [2020-10-19 18:13:52,649 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 126 transitions. Word has length 11 [2020-10-19 18:13:52,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:52,649 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 126 transitions. [2020-10-19 18:13:52,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:13:52,650 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 126 transitions. [2020-10-19 18:13:52,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 18:13:52,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:52,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:52,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-19 18:13:52,862 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:13:52,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:52,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1246188289, now seen corresponding path program 1 times [2020-10-19 18:13:52,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:13:52,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709645317] [2020-10-19 18:13:52,864 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 18:13:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:52,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:13:52,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:13:52,981 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:13:52,981 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:52,983 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:52,983 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:52,984 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:13:52,995 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 18:13:52,995 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:53,003 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:53,004 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:53,004 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:11 [2020-10-19 18:13:53,019 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 19 treesize of output 11 [2020-10-19 18:13:53,020 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:53,023 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:53,024 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 18:13:53,024 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:7 [2020-10-19 18:13:53,042 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 18:13:53,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:13:53,055 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 18:13:53,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [709645317] [2020-10-19 18:13:53,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:53,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-19 18:13:53,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079358023] [2020-10-19 18:13:53,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:13:53,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:13:53,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:13:53,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:13:53,057 INFO L87 Difference]: Start difference. First operand 113 states and 126 transitions. Second operand 6 states. [2020-10-19 18:13:53,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:53,799 INFO L93 Difference]: Finished difference Result 186 states and 208 transitions. [2020-10-19 18:13:53,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:13:53,800 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-19 18:13:53,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:53,801 INFO L225 Difference]: With dead ends: 186 [2020-10-19 18:13:53,801 INFO L226 Difference]: Without dead ends: 186 [2020-10-19 18:13:53,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:13:53,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-19 18:13:53,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 112. [2020-10-19 18:13:53,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-19 18:13:53,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 125 transitions. [2020-10-19 18:13:53,811 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 125 transitions. Word has length 14 [2020-10-19 18:13:53,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:53,811 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 125 transitions. [2020-10-19 18:13:53,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:13:53,812 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 125 transitions. [2020-10-19 18:13:53,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 18:13:53,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:53,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:54,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-19 18:13:54,026 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:13:54,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:54,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1246188288, now seen corresponding path program 1 times [2020-10-19 18:13:54,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:13:54,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [915758547] [2020-10-19 18:13:54,028 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 18:13:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:54,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-19 18:13:54,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:13:54,158 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:13:54,158 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:54,163 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:54,163 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:54,163 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:13:54,185 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 18:13:54,185 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:54,196 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:54,200 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 18:13:54,201 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:54,209 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:54,210 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:54,210 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:28, output treesize:17 [2020-10-19 18:13:54,244 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 18:13:54,245 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:54,253 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:54,258 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 19 treesize of output 11 [2020-10-19 18:13:54,259 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:54,264 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:54,265 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:54,265 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:33, output treesize:11 [2020-10-19 18:13:54,296 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 18:13:54,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:13:54,492 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 18:13:54,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [915758547] [2020-10-19 18:13:54,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:54,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-10-19 18:13:54,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385902152] [2020-10-19 18:13:54,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 18:13:54,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:13:54,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 18:13:54,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:13:54,495 INFO L87 Difference]: Start difference. First operand 112 states and 125 transitions. Second operand 10 states. [2020-10-19 18:13:56,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:56,402 INFO L93 Difference]: Finished difference Result 217 states and 244 transitions. [2020-10-19 18:13:56,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 18:13:56,403 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-19 18:13:56,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:56,404 INFO L225 Difference]: With dead ends: 217 [2020-10-19 18:13:56,404 INFO L226 Difference]: Without dead ends: 217 [2020-10-19 18:13:56,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-10-19 18:13:56,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-19 18:13:56,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 108. [2020-10-19 18:13:56,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-19 18:13:56,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 121 transitions. [2020-10-19 18:13:56,414 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 121 transitions. Word has length 14 [2020-10-19 18:13:56,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:56,414 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 121 transitions. [2020-10-19 18:13:56,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 18:13:56,415 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 121 transitions. [2020-10-19 18:13:56,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 18:13:56,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:56,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:56,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-19 18:13:56,623 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:13:56,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:56,625 INFO L82 PathProgramCache]: Analyzing trace with hash 3050255, now seen corresponding path program 1 times [2020-10-19 18:13:56,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:13:56,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [492044425] [2020-10-19 18:13:56,627 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 18:13:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:56,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:13:56,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:13:56,740 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 18:13:56,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:13:56,748 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 18:13:56,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [492044425] [2020-10-19 18:13:56,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:56,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-19 18:13:56,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70200047] [2020-10-19 18:13:56,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:13:56,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:13:56,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:13:56,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:13:56,751 INFO L87 Difference]: Start difference. First operand 108 states and 121 transitions. Second operand 4 states. [2020-10-19 18:13:57,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:57,047 INFO L93 Difference]: Finished difference Result 128 states and 140 transitions. [2020-10-19 18:13:57,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:13:57,048 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-19 18:13:57,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:57,049 INFO L225 Difference]: With dead ends: 128 [2020-10-19 18:13:57,050 INFO L226 Difference]: Without dead ends: 128 [2020-10-19 18:13:57,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:13:57,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-19 18:13:57,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 107. [2020-10-19 18:13:57,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-19 18:13:57,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 117 transitions. [2020-10-19 18:13:57,069 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 117 transitions. Word has length 15 [2020-10-19 18:13:57,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:57,070 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 117 transitions. [2020-10-19 18:13:57,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:13:57,070 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 117 transitions. [2020-10-19 18:13:57,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 18:13:57,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:57,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:57,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-19 18:13:57,289 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:13:57,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:57,290 INFO L82 PathProgramCache]: Analyzing trace with hash 519570213, now seen corresponding path program 1 times [2020-10-19 18:13:57,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:13:57,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2017009965] [2020-10-19 18:13:57,290 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 18:13:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:57,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:13:57,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:13:57,431 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 13 treesize of output 9 [2020-10-19 18:13:57,431 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:57,436 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:57,436 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:57,436 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-10-19 18:13:57,462 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 19 treesize of output 7 [2020-10-19 18:13:57,463 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:57,466 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:57,466 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 18:13:57,466 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-10-19 18:13:57,479 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 18:13:57,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:13:57,489 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 18:13:57,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2017009965] [2020-10-19 18:13:57,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:57,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-19 18:13:57,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501017033] [2020-10-19 18:13:57,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:13:57,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:13:57,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:13:57,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:13:57,492 INFO L87 Difference]: Start difference. First operand 107 states and 117 transitions. Second operand 5 states. [2020-10-19 18:13:57,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:57,968 INFO L93 Difference]: Finished difference Result 166 states and 184 transitions. [2020-10-19 18:13:57,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:13:57,992 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-19 18:13:57,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:57,993 INFO L225 Difference]: With dead ends: 166 [2020-10-19 18:13:57,994 INFO L226 Difference]: Without dead ends: 166 [2020-10-19 18:13:57,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:13:57,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-19 18:13:58,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 113. [2020-10-19 18:13:58,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-19 18:13:58,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 124 transitions. [2020-10-19 18:13:58,017 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 124 transitions. Word has length 18 [2020-10-19 18:13:58,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:58,017 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 124 transitions. [2020-10-19 18:13:58,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:13:58,018 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 124 transitions. [2020-10-19 18:13:58,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 18:13:58,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:58,019 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 18:13:58,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-19 18:13:58,234 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:13:58,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:58,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1758607283, now seen corresponding path program 1 times [2020-10-19 18:13:58,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:13:58,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [253302351] [2020-10-19 18:13:58,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-10-19 18:13:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:58,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:13:58,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:13:58,379 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:13:58,379 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:58,381 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:58,382 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:58,382 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:13:58,393 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 18:13:58,393 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:58,403 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:58,404 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:58,404 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:11 [2020-10-19 18:13:58,424 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 19 treesize of output 11 [2020-10-19 18:13:58,425 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:58,430 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:58,430 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:58,431 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:7 [2020-10-19 18:13:58,448 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 18:13:58,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:13:58,463 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 18:13:58,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [253302351] [2020-10-19 18:13:58,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:58,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-19 18:13:58,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213963399] [2020-10-19 18:13:58,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:13:58,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:13:58,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:13:58,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:13:58,465 INFO L87 Difference]: Start difference. First operand 113 states and 124 transitions. Second operand 6 states. [2020-10-19 18:13:59,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:59,192 INFO L93 Difference]: Finished difference Result 172 states and 190 transitions. [2020-10-19 18:13:59,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:13:59,192 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-19 18:13:59,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:59,194 INFO L225 Difference]: With dead ends: 172 [2020-10-19 18:13:59,194 INFO L226 Difference]: Without dead ends: 172 [2020-10-19 18:13:59,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:13:59,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-19 18:13:59,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 112. [2020-10-19 18:13:59,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-19 18:13:59,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 123 transitions. [2020-10-19 18:13:59,200 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 123 transitions. Word has length 21 [2020-10-19 18:13:59,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:59,200 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 123 transitions. [2020-10-19 18:13:59,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:13:59,200 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 123 transitions. [2020-10-19 18:13:59,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 18:13:59,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:59,201 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 18:13:59,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-10-19 18:13:59,405 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:13:59,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:59,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1758607282, now seen corresponding path program 1 times [2020-10-19 18:13:59,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:13:59,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2103042936] [2020-10-19 18:13:59,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-10-19 18:13:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:59,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-19 18:13:59,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:13:59,555 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:13:59,555 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:59,560 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:59,561 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:59,561 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:13:59,580 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 18:13:59,580 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:59,590 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:59,593 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 18:13:59,593 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:59,604 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:59,606 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:59,606 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:28, output treesize:17 [2020-10-19 18:13:59,630 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 18:13:59,631 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:59,639 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:59,642 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 19 treesize of output 11 [2020-10-19 18:13:59,642 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:59,648 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:59,648 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:59,648 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:33, output treesize:11 [2020-10-19 18:13:59,678 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 18:13:59,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:13:59,879 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 18:13:59,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2103042936] [2020-10-19 18:13:59,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:59,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-10-19 18:13:59,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850262512] [2020-10-19 18:13:59,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 18:13:59,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:13:59,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 18:13:59,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:13:59,881 INFO L87 Difference]: Start difference. First operand 112 states and 123 transitions. Second operand 10 states. [2020-10-19 18:14:02,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:14:02,031 INFO L93 Difference]: Finished difference Result 224 states and 247 transitions. [2020-10-19 18:14:02,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:14:02,033 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2020-10-19 18:14:02,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:14:02,034 INFO L225 Difference]: With dead ends: 224 [2020-10-19 18:14:02,034 INFO L226 Difference]: Without dead ends: 224 [2020-10-19 18:14:02,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-19 18:14:02,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-19 18:14:02,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 107. [2020-10-19 18:14:02,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-19 18:14:02,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 117 transitions. [2020-10-19 18:14:02,040 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 117 transitions. Word has length 21 [2020-10-19 18:14:02,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:14:02,040 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 117 transitions. [2020-10-19 18:14:02,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 18:14:02,040 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 117 transitions. [2020-10-19 18:14:02,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 18:14:02,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:14:02,042 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] [2020-10-19 18:14:02,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-10-19 18:14:02,254 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:14:02,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:14:02,254 INFO L82 PathProgramCache]: Analyzing trace with hash -765256239, now seen corresponding path program 1 times [2020-10-19 18:14:02,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:14:02,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1987791054] [2020-10-19 18:14:02,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-10-19 18:14:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:02,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:14:02,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:14:02,364 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 13 treesize of output 9 [2020-10-19 18:14:02,364 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:14:02,368 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:14:02,368 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:14:02,368 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-10-19 18:14:02,390 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 19 treesize of output 7 [2020-10-19 18:14:02,391 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:14:02,392 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:14:02,393 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 18:14:02,393 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-10-19 18:14:02,402 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 18:14:02,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:14:02,460 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 18:14:02,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1987791054] [2020-10-19 18:14:02,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:14:02,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-10-19 18:14:02,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154111893] [2020-10-19 18:14:02,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:14:02,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:14:02,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:14:02,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:14:02,462 INFO L87 Difference]: Start difference. First operand 107 states and 117 transitions. Second operand 8 states. [2020-10-19 18:14:03,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:14:03,042 INFO L93 Difference]: Finished difference Result 158 states and 174 transitions. [2020-10-19 18:14:03,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:14:03,042 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-10-19 18:14:03,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:14:03,044 INFO L225 Difference]: With dead ends: 158 [2020-10-19 18:14:03,044 INFO L226 Difference]: Without dead ends: 158 [2020-10-19 18:14:03,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:14:03,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-19 18:14:03,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 111. [2020-10-19 18:14:03,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-19 18:14:03,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2020-10-19 18:14:03,049 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 22 [2020-10-19 18:14:03,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:14:03,050 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2020-10-19 18:14:03,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:14:03,050 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2020-10-19 18:14:03,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-19 18:14:03,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:14:03,051 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] [2020-10-19 18:14:03,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-10-19 18:14:03,260 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr51ENSURES_VIOLATIONMEMORY_LEAK, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr48ASSERT_VIOLATIONMEMORY_FREE, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr50ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr49ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:14:03,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:14:03,261 INFO L82 PathProgramCache]: Analyzing trace with hash -673004413, now seen corresponding path program 1 times [2020-10-19 18:14:03,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:14:03,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1871148514] [2020-10-19 18:14:03,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-10-19 18:14:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:14:03,372 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:14:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:14:03,406 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:14:03,438 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-19 18:14:03,439 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:14:03,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-10-19 18:14:03,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:14:03 BoogieIcfgContainer [2020-10-19 18:14:03,673 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:14:03,674 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:14:03,674 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:14:03,674 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:14:03,675 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:13:48" (3/4) ... [2020-10-19 18:14:03,679 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 18:14:03,679 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:14:03,681 INFO L168 Benchmark]: Toolchain (without parser) took 17231.60 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 306.7 MB). Free memory was 954.6 MB in the beginning and 944.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 316.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:14:03,681 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:14:03,682 INFO L168 Benchmark]: CACSL2BoogieTranslator took 591.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -147.9 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:14:03,683 INFO L168 Benchmark]: Boogie Preprocessor took 94.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:14:03,683 INFO L168 Benchmark]: RCFGBuilder took 929.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 66.3 MB). Peak memory consumption was 66.3 MB. Max. memory is 11.5 GB. [2020-10-19 18:14:03,684 INFO L168 Benchmark]: TraceAbstraction took 15599.47 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 184.5 MB). Free memory was 1.0 GB in the beginning and 944.6 MB in the end (delta: 84.5 MB). Peak memory consumption was 269.0 MB. Max. memory is 11.5 GB. [2020-10-19 18:14:03,684 INFO L168 Benchmark]: Witness Printer took 5.49 ms. Allocated memory is still 1.3 GB. Free memory is still 944.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:14:03,687 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 591.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -147.9 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 94.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 929.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 66.3 MB). Peak memory consumption was 66.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 15599.47 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 184.5 MB). Free memory was 1.0 GB in the beginning and 944.6 MB in the end (delta: 84.5 MB). Peak memory consumption was 269.0 MB. Max. memory is 11.5 GB. * Witness Printer took 5.49 ms. Allocated memory is still 1.3 GB. Free memory is still 944.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 993]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 993. Possible FailurePath: [L1006] SLL* list = malloc(sizeof(SLL)); VAL [list={1:0}, malloc(sizeof(SLL))={1:0}] [L1007] list->next = ((void*)0) VAL [list={1:0}, malloc(sizeof(SLL))={1:0}] [L1008] list->colour = BLACK VAL [list={1:0}, malloc(sizeof(SLL))={1:0}] [L1010] SLL* end = list; VAL [end={1:0}, list={1:0}, malloc(sizeof(SLL))={1:0}] [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1034] end = ((void*)0) [L1035] end = list VAL [end={1:0}, list={1:0}, malloc(sizeof(SLL))={1:0}] [L1038] COND FALSE !(!(((void*)0) != end)) VAL [end={1:0}, list={1:0}, malloc(sizeof(SLL))={1:0}] [L1039] EXPR end->colour VAL [end={1:0}, end->colour=1, list={1:0}, malloc(sizeof(SLL))={1:0}] [L1039] COND FALSE !(!(BLACK == end->colour)) [L1041] COND TRUE ((void*)0) != end VAL [end={1:0}, list={1:0}, malloc(sizeof(SLL))={1:0}] [L1043] EXPR end->colour VAL [end={1:0}, end->colour=1, list={1:0}, malloc(sizeof(SLL))={1:0}] [L1043] COND FALSE !(RED == end->colour) [L1049] EXPR end->next VAL [end={1:0}, end->next={0:0}, list={1:0}, malloc(sizeof(SLL))={1:0}] [L1049] COND TRUE !(end->next) [L1049] CALL reach_error() [L993] COND FALSE !(0) [L993] __assert_fail ("0", "sll-rb-cnstr_1-2.c", 13, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 133 locations, 53 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.4s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 9.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 951 SDtfs, 1594 SDslu, 2014 SDs, 0 SdLazy, 2869 SolverSat, 152 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 338 GetRequests, 262 SyntacticMatches, 7 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 559 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 185 NumberOfCodeBlocks, 185 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 300 ConstructedInterpolants, 4 QuantifiedInterpolants, 17791 SizeOfPredicates, 57 NumberOfNonLiveVariables, 1018 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 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...