./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/list-ext_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext_2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d6c9e5ba66547a8817cc7b16e9df45177efa4b55 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext_2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d6c9e5ba66547a8817cc7b16e9df45177efa4b55 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 10:24:56,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 10:24:56,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 10:24:57,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 10:24:57,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 10:24:57,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 10:24:57,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 10:24:57,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 10:24:57,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 10:24:57,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 10:24:57,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 10:24:57,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 10:24:57,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 10:24:57,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 10:24:57,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 10:24:57,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 10:24:57,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 10:24:57,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 10:24:57,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 10:24:57,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 10:24:57,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 10:24:57,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 10:24:57,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 10:24:57,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 10:24:57,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 10:24:57,025 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 10:24:57,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 10:24:57,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 10:24:57,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 10:24:57,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 10:24:57,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 10:24:57,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 10:24:57,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 10:24:57,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 10:24:57,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 10:24:57,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 10:24:57,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 10:24:57,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 10:24:57,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 10:24:57,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 10:24:57,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 10:24:57,033 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-12-09 10:24:57,071 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 10:24:57,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 10:24:57,071 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 10:24:57,072 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 10:24:57,072 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 10:24:57,072 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 10:24:57,072 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 10:24:57,072 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 10:24:57,072 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 10:24:57,072 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 10:24:57,072 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 10:24:57,072 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 10:24:57,073 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 10:24:57,073 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 10:24:57,073 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 10:24:57,073 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 10:24:57,073 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 10:24:57,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 10:24:57,074 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 10:24:57,074 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 10:24:57,074 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 10:24:57,074 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 10:24:57,074 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 10:24:57,074 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 10:24:57,074 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 10:24:57,074 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 10:24:57,074 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 10:24:57,075 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 10:24:57,075 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 10:24:57,075 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 10:24:57,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 10:24:57,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 10:24:57,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 10:24:57,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 10:24:57,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 10:24:57,076 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 10:24:57,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 10:24:57,076 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 10:24:57,076 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 10:24:57,076 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6c9e5ba66547a8817cc7b16e9df45177efa4b55 [2020-12-09 10:24:57,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 10:24:57,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 10:24:57,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 10:24:57,260 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 10:24:57,261 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 10:24:57,261 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan/../../sv-benchmarks/c/list-ext-properties/list-ext_2.i [2020-12-09 10:24:57,308 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan/data/d9516e82e/c1d3b4ff32d04e94b9204ae4a532782a/FLAGb8df78d5f [2020-12-09 10:24:57,730 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 10:24:57,730 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/sv-benchmarks/c/list-ext-properties/list-ext_2.i [2020-12-09 10:24:57,741 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan/data/d9516e82e/c1d3b4ff32d04e94b9204ae4a532782a/FLAGb8df78d5f [2020-12-09 10:24:57,752 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan/data/d9516e82e/c1d3b4ff32d04e94b9204ae4a532782a [2020-12-09 10:24:57,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 10:24:57,756 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 10:24:57,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 10:24:57,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 10:24:57,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 10:24:57,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:24:57" (1/1) ... [2020-12-09 10:24:57,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e12421d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:24:57, skipping insertion in model container [2020-12-09 10:24:57,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:24:57" (1/1) ... [2020-12-09 10:24:57,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 10:24:57,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 10:24:57,967 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/sv-benchmarks/c/list-ext-properties/list-ext_2.i[23625,23638] [2020-12-09 10:24:57,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:24:57,977 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 10:24:58,007 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/sv-benchmarks/c/list-ext-properties/list-ext_2.i[23625,23638] [2020-12-09 10:24:58,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:24:58,049 INFO L208 MainTranslator]: Completed translation [2020-12-09 10:24:58,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:24:58 WrapperNode [2020-12-09 10:24:58,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 10:24:58,050 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 10:24:58,050 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 10:24:58,050 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 10:24:58,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:24:58" (1/1) ... [2020-12-09 10:24:58,066 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:24:58" (1/1) ... [2020-12-09 10:24:58,084 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 10:24:58,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 10:24:58,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 10:24:58,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 10:24:58,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:24:58" (1/1) ... [2020-12-09 10:24:58,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:24:58" (1/1) ... [2020-12-09 10:24:58,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:24:58" (1/1) ... [2020-12-09 10:24:58,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:24:58" (1/1) ... [2020-12-09 10:24:58,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:24:58" (1/1) ... [2020-12-09 10:24:58,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:24:58" (1/1) ... [2020-12-09 10:24:58,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:24:58" (1/1) ... [2020-12-09 10:24:58,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 10:24:58,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 10:24:58,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 10:24:58,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 10:24:58,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:24:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan/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 [2020-12-09 10:24:58,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 10:24:58,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 10:24:58,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 10:24:58,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-09 10:24:58,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 10:24:58,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-09 10:24:58,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 10:24:58,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 10:24:58,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 10:24:58,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 10:24:58,554 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 10:24:58,554 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2020-12-09 10:24:58,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:24:58 BoogieIcfgContainer [2020-12-09 10:24:58,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 10:24:58,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 10:24:58,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 10:24:58,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 10:24:58,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 10:24:57" (1/3) ... [2020-12-09 10:24:58,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb85709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:24:58, skipping insertion in model container [2020-12-09 10:24:58,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:24:58" (2/3) ... [2020-12-09 10:24:58,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb85709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:24:58, skipping insertion in model container [2020-12-09 10:24:58,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:24:58" (3/3) ... [2020-12-09 10:24:58,561 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext_2.i [2020-12-09 10:24:58,571 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 10:24:58,573 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 38 error locations. [2020-12-09 10:24:58,581 INFO L253 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2020-12-09 10:24:58,595 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 10:24:58,595 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 10:24:58,595 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 10:24:58,595 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 10:24:58,595 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 10:24:58,595 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 10:24:58,595 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 10:24:58,595 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 10:24:58,606 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2020-12-09 10:24:58,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 10:24:58,611 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:24:58,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 10:24:58,611 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 10:24:58,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:24:58,616 INFO L82 PathProgramCache]: Analyzing trace with hash 200471200, now seen corresponding path program 1 times [2020-12-09 10:24:58,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:24:58,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783357213] [2020-12-09 10:24:58,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:24:58,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:24:58,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:24:58,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783357213] [2020-12-09 10:24:58,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:24:58,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:24:58,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188350840] [2020-12-09 10:24:58,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:24:58,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:24:58,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:24:58,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:24:58,759 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 4 states. [2020-12-09 10:24:58,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:24:58,888 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2020-12-09 10:24:58,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 10:24:58,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-09 10:24:58,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:24:58,895 INFO L225 Difference]: With dead ends: 96 [2020-12-09 10:24:58,896 INFO L226 Difference]: Without dead ends: 92 [2020-12-09 10:24:58,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:24:58,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-09 10:24:58,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 73. [2020-12-09 10:24:58,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-12-09 10:24:58,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2020-12-09 10:24:58,923 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 85 transitions. Word has length 5 [2020-12-09 10:24:58,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:24:58,923 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 85 transitions. [2020-12-09 10:24:58,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:24:58,923 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 85 transitions. [2020-12-09 10:24:58,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 10:24:58,923 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:24:58,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 10:24:58,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 10:24:58,924 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 10:24:58,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:24:58,925 INFO L82 PathProgramCache]: Analyzing trace with hash 200471201, now seen corresponding path program 1 times [2020-12-09 10:24:58,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:24:58,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883047112] [2020-12-09 10:24:58,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:24:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:24:58,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:24:58,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883047112] [2020-12-09 10:24:58,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:24:58,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:24:58,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8398968] [2020-12-09 10:24:58,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:24:58,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:24:58,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:24:58,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:24:58,977 INFO L87 Difference]: Start difference. First operand 73 states and 85 transitions. Second operand 4 states. [2020-12-09 10:24:59,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:24:59,131 INFO L93 Difference]: Finished difference Result 102 states and 111 transitions. [2020-12-09 10:24:59,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 10:24:59,132 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-09 10:24:59,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:24:59,133 INFO L225 Difference]: With dead ends: 102 [2020-12-09 10:24:59,133 INFO L226 Difference]: Without dead ends: 102 [2020-12-09 10:24:59,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:24:59,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-09 10:24:59,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 90. [2020-12-09 10:24:59,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-12-09 10:24:59,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 100 transitions. [2020-12-09 10:24:59,141 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 100 transitions. Word has length 5 [2020-12-09 10:24:59,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:24:59,141 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 100 transitions. [2020-12-09 10:24:59,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:24:59,142 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 100 transitions. [2020-12-09 10:24:59,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 10:24:59,142 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:24:59,142 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:24:59,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 10:24:59,143 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 10:24:59,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:24:59,144 INFO L82 PathProgramCache]: Analyzing trace with hash -24937944, now seen corresponding path program 1 times [2020-12-09 10:24:59,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:24:59,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125392803] [2020-12-09 10:24:59,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:24:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:24:59,203 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:24:59,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125392803] [2020-12-09 10:24:59,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:24:59,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 10:24:59,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048829279] [2020-12-09 10:24:59,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 10:24:59,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:24:59,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 10:24:59,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:24:59,205 INFO L87 Difference]: Start difference. First operand 90 states and 100 transitions. Second operand 5 states. [2020-12-09 10:24:59,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:24:59,336 INFO L93 Difference]: Finished difference Result 122 states and 136 transitions. [2020-12-09 10:24:59,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 10:24:59,336 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-09 10:24:59,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:24:59,337 INFO L225 Difference]: With dead ends: 122 [2020-12-09 10:24:59,337 INFO L226 Difference]: Without dead ends: 122 [2020-12-09 10:24:59,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 10:24:59,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-12-09 10:24:59,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 87. [2020-12-09 10:24:59,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-12-09 10:24:59,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 97 transitions. [2020-12-09 10:24:59,343 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 97 transitions. Word has length 11 [2020-12-09 10:24:59,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:24:59,344 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 97 transitions. [2020-12-09 10:24:59,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 10:24:59,344 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 97 transitions. [2020-12-09 10:24:59,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 10:24:59,344 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:24:59,344 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:24:59,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 10:24:59,344 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 10:24:59,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:24:59,345 INFO L82 PathProgramCache]: Analyzing trace with hash -24937943, now seen corresponding path program 1 times [2020-12-09 10:24:59,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:24:59,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981709185] [2020-12-09 10:24:59,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:24:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:24:59,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:24:59,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981709185] [2020-12-09 10:24:59,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:24:59,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 10:24:59,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606057906] [2020-12-09 10:24:59,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 10:24:59,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:24:59,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 10:24:59,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:24:59,405 INFO L87 Difference]: Start difference. First operand 87 states and 97 transitions. Second operand 5 states. [2020-12-09 10:24:59,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:24:59,567 INFO L93 Difference]: Finished difference Result 114 states and 129 transitions. [2020-12-09 10:24:59,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 10:24:59,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-09 10:24:59,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:24:59,568 INFO L225 Difference]: With dead ends: 114 [2020-12-09 10:24:59,568 INFO L226 Difference]: Without dead ends: 114 [2020-12-09 10:24:59,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 10:24:59,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-12-09 10:24:59,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 65. [2020-12-09 10:24:59,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-09 10:24:59,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2020-12-09 10:24:59,575 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 11 [2020-12-09 10:24:59,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:24:59,576 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2020-12-09 10:24:59,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 10:24:59,576 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2020-12-09 10:24:59,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 10:24:59,576 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:24:59,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:24:59,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 10:24:59,577 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 10:24:59,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:24:59,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1000859897, now seen corresponding path program 1 times [2020-12-09 10:24:59,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:24:59,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699242777] [2020-12-09 10:24:59,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:24:59,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:24:59,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:24:59,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699242777] [2020-12-09 10:24:59,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:24:59,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 10:24:59,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357264909] [2020-12-09 10:24:59,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 10:24:59,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:24:59,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 10:24:59,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 10:24:59,648 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand 6 states. [2020-12-09 10:24:59,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:24:59,763 INFO L93 Difference]: Finished difference Result 114 states and 124 transitions. [2020-12-09 10:24:59,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 10:24:59,763 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-09 10:24:59,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:24:59,764 INFO L225 Difference]: With dead ends: 114 [2020-12-09 10:24:59,764 INFO L226 Difference]: Without dead ends: 114 [2020-12-09 10:24:59,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 10:24:59,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-12-09 10:24:59,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 73. [2020-12-09 10:24:59,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-12-09 10:24:59,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2020-12-09 10:24:59,768 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 12 [2020-12-09 10:24:59,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:24:59,769 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2020-12-09 10:24:59,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 10:24:59,769 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2020-12-09 10:24:59,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 10:24:59,769 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:24:59,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:24:59,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 10:24:59,770 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 10:24:59,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:24:59,770 INFO L82 PathProgramCache]: Analyzing trace with hash 242320539, now seen corresponding path program 1 times [2020-12-09 10:24:59,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:24:59,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663733542] [2020-12-09 10:24:59,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:24:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:24:59,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:24:59,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663733542] [2020-12-09 10:24:59,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:24:59,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 10:24:59,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429498931] [2020-12-09 10:24:59,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 10:24:59,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:24:59,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 10:24:59,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 10:24:59,814 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand 6 states. [2020-12-09 10:24:59,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:24:59,920 INFO L93 Difference]: Finished difference Result 113 states and 122 transitions. [2020-12-09 10:24:59,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 10:24:59,920 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-09 10:24:59,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:24:59,921 INFO L225 Difference]: With dead ends: 113 [2020-12-09 10:24:59,921 INFO L226 Difference]: Without dead ends: 113 [2020-12-09 10:24:59,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 10:24:59,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-12-09 10:24:59,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 75. [2020-12-09 10:24:59,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-09 10:24:59,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2020-12-09 10:24:59,926 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 14 [2020-12-09 10:24:59,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:24:59,927 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2020-12-09 10:24:59,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 10:24:59,927 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2020-12-09 10:24:59,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 10:24:59,927 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:24:59,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:24:59,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 10:24:59,928 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 10:24:59,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:24:59,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1078115362, now seen corresponding path program 1 times [2020-12-09 10:24:59,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:24:59,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324997139] [2020-12-09 10:24:59,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:24:59,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 10:24:59,945 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 10:24:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 10:24:59,961 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 10:24:59,979 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 10:24:59,979 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 10:24:59,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 10:24:59,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 10:24:59 BoogieIcfgContainer [2020-12-09 10:24:59,999 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 10:24:59,999 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 10:25:00,000 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 10:25:00,000 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 10:25:00,000 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:24:58" (3/4) ... [2020-12-09 10:25:00,002 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 10:25:00,002 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 10:25:00,003 INFO L168 Benchmark]: Toolchain (without parser) took 2246.65 ms. Allocated memory was 138.4 MB in the beginning and 174.1 MB in the end (delta: 35.7 MB). Free memory was 116.1 MB in the beginning and 134.2 MB in the end (delta: -18.1 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. [2020-12-09 10:25:00,004 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 77.6 MB. Free memory was 52.4 MB in the beginning and 52.3 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:25:00,004 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.53 ms. Allocated memory is still 138.4 MB. Free memory was 115.8 MB in the beginning and 93.2 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-12-09 10:25:00,004 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.74 ms. Allocated memory is still 138.4 MB. Free memory was 93.2 MB in the beginning and 91.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 10:25:00,005 INFO L168 Benchmark]: Boogie Preprocessor took 25.98 ms. Allocated memory is still 138.4 MB. Free memory was 91.2 MB in the beginning and 89.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 10:25:00,005 INFO L168 Benchmark]: RCFGBuilder took 444.68 ms. Allocated memory is still 138.4 MB. Free memory was 89.4 MB in the beginning and 90.4 MB in the end (delta: -985.5 kB). Peak memory consumption was 21.9 MB. Max. memory is 16.1 GB. [2020-12-09 10:25:00,006 INFO L168 Benchmark]: TraceAbstraction took 1442.65 ms. Allocated memory was 138.4 MB in the beginning and 174.1 MB in the end (delta: 35.7 MB). Free memory was 89.5 MB in the beginning and 134.2 MB in the end (delta: -44.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:25:00,006 INFO L168 Benchmark]: Witness Printer took 2.63 ms. Allocated memory is still 174.1 MB. Free memory is still 134.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:25:00,008 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 77.6 MB. Free memory was 52.4 MB in the beginning and 52.3 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 292.53 ms. Allocated memory is still 138.4 MB. Free memory was 115.8 MB in the beginning and 93.2 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.74 ms. Allocated memory is still 138.4 MB. Free memory was 93.2 MB in the beginning and 91.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.98 ms. Allocated memory is still 138.4 MB. Free memory was 91.2 MB in the beginning and 89.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 444.68 ms. Allocated memory is still 138.4 MB. Free memory was 89.4 MB in the beginning and 90.4 MB in the end (delta: -985.5 kB). Peak memory consumption was 21.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1442.65 ms. Allocated memory was 138.4 MB in the beginning and 174.1 MB in the end (delta: 35.7 MB). Free memory was 89.5 MB in the beginning and 134.2 MB in the end (delta: -44.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 2.63 ms. Allocated memory is still 174.1 MB. Free memory is still 134.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 569]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 569. Possible FailurePath: [L533] int i = 0; [L534] int y = 0; [L535] List a = (List) malloc(sizeof(struct node)); [L536] COND FALSE !(a == 0) [L537] List t; [L538] List p = a; [L539] i < 10 && __VERIFIER_nondet_int() [L539] i < 10 && __VERIFIER_nondet_int() [L539] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L547] y < 10 && __VERIFIER_nondet_int() [L547] y < 10 && __VERIFIER_nondet_int() [L547] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L555] p->h = 3 [L556] p->n = (void*)__VERIFIER_nondet_ulong() [L557] i = 0 [L558] y = 0 [L559] p = a [L560] EXPR p->h [L560] COND FALSE !(p->h == 1) [L564] EXPR p->h [L564] COND FALSE !(p->h == 2) [L568] EXPR p->h [L568] COND TRUE p->h != 3 || (i + y) < 20 [L569] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 78 locations, 38 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 245 SDtfs, 537 SDslu, 352 SDs, 0 SdLazy, 807 SolverSat, 124 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 194 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 73 NumberOfCodeBlocks, 73 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 2994 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 8/8 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 0.2.0-7b2dab5 [2020-12-09 10:25:01,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 10:25:01,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 10:25:01,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 10:25:01,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 10:25:01,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 10:25:01,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 10:25:01,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 10:25:01,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 10:25:01,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 10:25:01,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 10:25:01,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 10:25:01,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 10:25:01,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 10:25:01,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 10:25:01,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 10:25:01,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 10:25:01,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 10:25:01,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 10:25:01,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 10:25:01,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 10:25:01,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 10:25:01,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 10:25:01,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 10:25:01,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 10:25:01,734 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 10:25:01,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 10:25:01,735 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 10:25:01,735 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 10:25:01,736 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 10:25:01,737 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 10:25:01,737 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 10:25:01,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 10:25:01,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 10:25:01,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 10:25:01,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 10:25:01,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 10:25:01,740 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 10:25:01,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 10:25:01,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 10:25:01,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 10:25:01,742 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-12-09 10:25:01,759 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 10:25:01,759 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 10:25:01,760 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 10:25:01,760 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 10:25:01,760 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 10:25:01,760 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 10:25:01,760 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 10:25:01,760 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 10:25:01,760 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 10:25:01,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 10:25:01,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 10:25:01,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 10:25:01,761 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 10:25:01,761 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 10:25:01,761 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 10:25:01,761 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 10:25:01,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 10:25:01,762 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 10:25:01,762 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 10:25:01,762 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 10:25:01,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 10:25:01,762 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 10:25:01,762 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 10:25:01,762 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 10:25:01,762 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 10:25:01,762 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 10:25:01,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 10:25:01,763 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 10:25:01,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 10:25:01,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 10:25:01,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 10:25:01,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 10:25:01,774 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 10:25:01,774 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 10:25:01,774 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 10:25:01,774 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 10:25:01,774 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6c9e5ba66547a8817cc7b16e9df45177efa4b55 [2020-12-09 10:25:01,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 10:25:02,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 10:25:02,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 10:25:02,018 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 10:25:02,018 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 10:25:02,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan/../../sv-benchmarks/c/list-ext-properties/list-ext_2.i [2020-12-09 10:25:02,061 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan/data/4faab37d3/189abd7e694240a08dcc5f8a3f10ae2f/FLAGfde850102 [2020-12-09 10:25:02,499 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 10:25:02,500 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/sv-benchmarks/c/list-ext-properties/list-ext_2.i [2020-12-09 10:25:02,510 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan/data/4faab37d3/189abd7e694240a08dcc5f8a3f10ae2f/FLAGfde850102 [2020-12-09 10:25:02,519 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan/data/4faab37d3/189abd7e694240a08dcc5f8a3f10ae2f [2020-12-09 10:25:02,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 10:25:02,522 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 10:25:02,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 10:25:02,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 10:25:02,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 10:25:02,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:25:02" (1/1) ... [2020-12-09 10:25:02,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@186b6b75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:25:02, skipping insertion in model container [2020-12-09 10:25:02,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:25:02" (1/1) ... [2020-12-09 10:25:02,533 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 10:25:02,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 10:25:02,803 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/sv-benchmarks/c/list-ext-properties/list-ext_2.i[23625,23638] [2020-12-09 10:25:02,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:25:02,821 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 10:25:02,861 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/sv-benchmarks/c/list-ext-properties/list-ext_2.i[23625,23638] [2020-12-09 10:25:02,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:25:02,905 INFO L208 MainTranslator]: Completed translation [2020-12-09 10:25:02,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:25:02 WrapperNode [2020-12-09 10:25:02,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 10:25:02,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 10:25:02,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 10:25:02,907 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 10:25:02,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:25:02" (1/1) ... [2020-12-09 10:25:02,930 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:25:02" (1/1) ... [2020-12-09 10:25:02,948 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 10:25:02,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 10:25:02,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 10:25:02,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 10:25:02,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:25:02" (1/1) ... [2020-12-09 10:25:02,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:25:02" (1/1) ... [2020-12-09 10:25:02,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:25:02" (1/1) ... [2020-12-09 10:25:02,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:25:02" (1/1) ... [2020-12-09 10:25:02,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:25:02" (1/1) ... [2020-12-09 10:25:02,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:25:02" (1/1) ... [2020-12-09 10:25:02,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:25:02" (1/1) ... [2020-12-09 10:25:02,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 10:25:02,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 10:25:02,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 10:25:02,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 10:25:02,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:25:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan/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 [2020-12-09 10:25:03,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-09 10:25:03,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 10:25:03,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-09 10:25:03,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 10:25:03,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-09 10:25:03,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 10:25:03,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-09 10:25:03,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 10:25:03,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 10:25:03,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 10:25:03,502 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 10:25:03,507 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2020-12-09 10:25:03,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:25:03 BoogieIcfgContainer [2020-12-09 10:25:03,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 10:25:03,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 10:25:03,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 10:25:03,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 10:25:03,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 10:25:02" (1/3) ... [2020-12-09 10:25:03,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@84d641b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:25:03, skipping insertion in model container [2020-12-09 10:25:03,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:25:02" (2/3) ... [2020-12-09 10:25:03,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@84d641b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:25:03, skipping insertion in model container [2020-12-09 10:25:03,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:25:03" (3/3) ... [2020-12-09 10:25:03,516 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext_2.i [2020-12-09 10:25:03,525 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 10:25:03,528 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 38 error locations. [2020-12-09 10:25:03,536 INFO L253 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2020-12-09 10:25:03,551 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 10:25:03,552 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 10:25:03,552 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 10:25:03,552 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 10:25:03,552 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 10:25:03,552 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 10:25:03,552 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 10:25:03,552 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 10:25:03,565 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2020-12-09 10:25:03,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 10:25:03,569 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:25:03,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 10:25:03,570 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 10:25:03,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:25:03,574 INFO L82 PathProgramCache]: Analyzing trace with hash 889599271, now seen corresponding path program 1 times [2020-12-09 10:25:03,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:25:03,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56675560] [2020-12-09 10:25:03,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan/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 [2020-12-09 10:25:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:25:03,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 10:25:03,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:25:03,695 INFO L382 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 [2020-12-09 10:25:03,696 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 10:25:03,701 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 10:25:03,701 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 10:25:03,701 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 10:25:03,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:25:03,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 10:25:03,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56675560] [2020-12-09 10:25:03,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:25:03,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 10:25:03,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010658007] [2020-12-09 10:25:03,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:25:03,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:25:03,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:25:03,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:25:03,736 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 4 states. [2020-12-09 10:25:04,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:25:04,012 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2020-12-09 10:25:04,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 10:25:04,013 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-09 10:25:04,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:25:04,019 INFO L225 Difference]: With dead ends: 104 [2020-12-09 10:25:04,019 INFO L226 Difference]: Without dead ends: 99 [2020-12-09 10:25:04,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:25:04,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-12-09 10:25:04,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 79. [2020-12-09 10:25:04,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-12-09 10:25:04,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 91 transitions. [2020-12-09 10:25:04,045 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 91 transitions. Word has length 6 [2020-12-09 10:25:04,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:25:04,045 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 91 transitions. [2020-12-09 10:25:04,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:25:04,045 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 91 transitions. [2020-12-09 10:25:04,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 10:25:04,046 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:25:04,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 10:25:04,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 10:25:04,249 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 10:25:04,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:25:04,251 INFO L82 PathProgramCache]: Analyzing trace with hash 889599272, now seen corresponding path program 1 times [2020-12-09 10:25:04,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:25:04,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1491908269] [2020-12-09 10:25:04,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan/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 [2020-12-09 10:25:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:25:04,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 10:25:04,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:25:04,423 INFO L382 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 [2020-12-09 10:25:04,424 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 10:25:04,429 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 10:25:04,430 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 10:25:04,430 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-09 10:25:04,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:25:04,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 10:25:04,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1491908269] [2020-12-09 10:25:04,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:25:04,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 10:25:04,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055009241] [2020-12-09 10:25:04,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:25:04,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:25:04,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:25:04,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:25:04,456 INFO L87 Difference]: Start difference. First operand 79 states and 91 transitions. Second operand 4 states. [2020-12-09 10:25:04,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:25:04,766 INFO L93 Difference]: Finished difference Result 116 states and 125 transitions. [2020-12-09 10:25:04,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 10:25:04,767 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-09 10:25:04,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:25:04,769 INFO L225 Difference]: With dead ends: 116 [2020-12-09 10:25:04,769 INFO L226 Difference]: Without dead ends: 116 [2020-12-09 10:25:04,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:25:04,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-12-09 10:25:04,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 99. [2020-12-09 10:25:04,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-09 10:25:04,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2020-12-09 10:25:04,779 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 6 [2020-12-09 10:25:04,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:25:04,780 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2020-12-09 10:25:04,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:25:04,780 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2020-12-09 10:25:04,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 10:25:04,781 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:25:04,781 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:25:04,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 10:25:04,982 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 10:25:04,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:25:04,983 INFO L82 PathProgramCache]: Analyzing trace with hash 903973752, now seen corresponding path program 1 times [2020-12-09 10:25:04,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:25:04,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511612127] [2020-12-09 10:25:04,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan/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 [2020-12-09 10:25:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:25:05,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 10:25:05,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:25:05,064 INFO L382 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 [2020-12-09 10:25:05,065 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 10:25:05,066 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 10:25:05,066 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 10:25:05,067 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 10:25:05,082 INFO L382 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 [2020-12-09 10:25:05,083 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 10:25:05,089 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 10:25:05,091 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 10:25:05,091 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-12-09 10:25:05,105 INFO L382 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 23 treesize of output 11 [2020-12-09 10:25:05,106 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 10:25:05,108 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 10:25:05,108 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 10:25:05,112 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:7 [2020-12-09 10:25:05,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:25:05,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 10:25:05,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511612127] [2020-12-09 10:25:05,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:25:05,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 10:25:05,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346838150] [2020-12-09 10:25:05,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 10:25:05,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:25:05,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 10:25:05,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 10:25:05,130 INFO L87 Difference]: Start difference. First operand 99 states and 109 transitions. Second operand 6 states. [2020-12-09 10:25:05,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:25:05,619 INFO L93 Difference]: Finished difference Result 142 states and 157 transitions. [2020-12-09 10:25:05,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 10:25:05,619 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-09 10:25:05,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:25:05,620 INFO L225 Difference]: With dead ends: 142 [2020-12-09 10:25:05,620 INFO L226 Difference]: Without dead ends: 142 [2020-12-09 10:25:05,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 10:25:05,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-12-09 10:25:05,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 101. [2020-12-09 10:25:05,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-12-09 10:25:05,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 114 transitions. [2020-12-09 10:25:05,627 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 114 transitions. Word has length 13 [2020-12-09 10:25:05,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:25:05,627 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 114 transitions. [2020-12-09 10:25:05,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 10:25:05,627 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 114 transitions. [2020-12-09 10:25:05,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 10:25:05,628 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:25:05,628 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:25:05,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 10:25:05,830 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 10:25:05,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:25:05,831 INFO L82 PathProgramCache]: Analyzing trace with hash 903973753, now seen corresponding path program 1 times [2020-12-09 10:25:05,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:25:05,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [360643250] [2020-12-09 10:25:05,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan/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 [2020-12-09 10:25:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:25:05,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 10:25:05,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:25:05,909 INFO L382 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 [2020-12-09 10:25:05,909 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 10:25:05,913 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 10:25:05,914 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 10:25:05,914 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:11 [2020-12-09 10:25:05,933 INFO L382 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 [2020-12-09 10:25:05,934 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 10:25:05,948 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 10:25:05,952 INFO L382 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 [2020-12-09 10:25:05,953 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 10:25:05,963 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 10:25:05,964 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 10:25:05,964 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:21 [2020-12-09 10:25:05,997 INFO L382 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 [2020-12-09 10:25:05,998 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 10:25:06,007 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 10:25:06,009 INFO L382 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 21 treesize of output 9 [2020-12-09 10:25:06,010 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 10:25:06,014 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 10:25:06,014 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 10:25:06,015 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:9 [2020-12-09 10:25:06,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:25:06,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 10:25:06,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [360643250] [2020-12-09 10:25:06,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:25:06,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 10:25:06,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537106092] [2020-12-09 10:25:06,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 10:25:06,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:25:06,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 10:25:06,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 10:25:06,040 INFO L87 Difference]: Start difference. First operand 101 states and 114 transitions. Second operand 6 states. [2020-12-09 10:25:06,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:25:06,716 INFO L93 Difference]: Finished difference Result 145 states and 161 transitions. [2020-12-09 10:25:06,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 10:25:06,716 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-09 10:25:06,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:25:06,717 INFO L225 Difference]: With dead ends: 145 [2020-12-09 10:25:06,717 INFO L226 Difference]: Without dead ends: 145 [2020-12-09 10:25:06,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-09 10:25:06,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-12-09 10:25:06,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 89. [2020-12-09 10:25:06,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-09 10:25:06,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2020-12-09 10:25:06,722 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 13 [2020-12-09 10:25:06,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:25:06,723 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2020-12-09 10:25:06,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 10:25:06,723 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2020-12-09 10:25:06,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 10:25:06,723 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:25:06,723 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:25:06,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 10:25:06,925 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 10:25:06,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:25:06,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1381288014, now seen corresponding path program 1 times [2020-12-09 10:25:06,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:25:06,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [419836639] [2020-12-09 10:25:06,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan/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 [2020-12-09 10:25:06,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:25:06,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 10:25:06,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:25:07,006 INFO L382 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 [2020-12-09 10:25:07,007 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 10:25:07,008 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 10:25:07,008 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 10:25:07,009 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 10:25:07,018 INFO L382 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 [2020-12-09 10:25:07,018 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 10:25:07,026 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 10:25:07,027 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 10:25:07,027 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-12-09 10:25:07,040 INFO L382 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 23 treesize of output 11 [2020-12-09 10:25:07,042 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 10:25:07,043 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 10:25:07,044 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 10:25:07,044 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:7 [2020-12-09 10:25:07,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:25:07,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 10:25:07,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [419836639] [2020-12-09 10:25:07,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:25:07,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 10:25:07,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99030879] [2020-12-09 10:25:07,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 10:25:07,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:25:07,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 10:25:07,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 10:25:07,061 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand 6 states. [2020-12-09 10:25:07,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:25:07,506 INFO L93 Difference]: Finished difference Result 134 states and 149 transitions. [2020-12-09 10:25:07,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 10:25:07,506 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-09 10:25:07,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:25:07,507 INFO L225 Difference]: With dead ends: 134 [2020-12-09 10:25:07,507 INFO L226 Difference]: Without dead ends: 134 [2020-12-09 10:25:07,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 10:25:07,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-12-09 10:25:07,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 87. [2020-12-09 10:25:07,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-12-09 10:25:07,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 96 transitions. [2020-12-09 10:25:07,512 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 96 transitions. Word has length 14 [2020-12-09 10:25:07,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:25:07,512 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 96 transitions. [2020-12-09 10:25:07,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 10:25:07,512 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 96 transitions. [2020-12-09 10:25:07,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 10:25:07,513 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:25:07,513 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:25:07,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 10:25:07,714 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 10:25:07,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:25:07,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1381288015, now seen corresponding path program 1 times [2020-12-09 10:25:07,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:25:07,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206568834] [2020-12-09 10:25:07,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan/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 [2020-12-09 10:25:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:25:07,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 10:25:07,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:25:07,904 INFO L382 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 [2020-12-09 10:25:07,905 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 10:25:07,908 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 10:25:07,909 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 10:25:07,909 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:11 [2020-12-09 10:25:07,924 INFO L382 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 [2020-12-09 10:25:07,925 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 10:25:07,935 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 10:25:07,939 INFO L382 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 [2020-12-09 10:25:07,939 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 10:25:07,947 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 10:25:07,948 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 10:25:07,948 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:21 [2020-12-09 10:25:07,969 INFO L382 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 [2020-12-09 10:25:07,970 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 10:25:07,979 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 10:25:07,981 INFO L382 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 21 treesize of output 9 [2020-12-09 10:25:07,983 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 10:25:07,987 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 10:25:07,988 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 10:25:07,988 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:9 [2020-12-09 10:25:08,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:25:08,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 10:25:08,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206568834] [2020-12-09 10:25:08,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:25:08,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 10:25:08,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627939412] [2020-12-09 10:25:08,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 10:25:08,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:25:08,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 10:25:08,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 10:25:08,017 INFO L87 Difference]: Start difference. First operand 87 states and 96 transitions. Second operand 6 states. [2020-12-09 10:25:08,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:25:08,531 INFO L93 Difference]: Finished difference Result 131 states and 147 transitions. [2020-12-09 10:25:08,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 10:25:08,531 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-09 10:25:08,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:25:08,532 INFO L225 Difference]: With dead ends: 131 [2020-12-09 10:25:08,532 INFO L226 Difference]: Without dead ends: 131 [2020-12-09 10:25:08,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-09 10:25:08,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-12-09 10:25:08,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 74. [2020-12-09 10:25:08,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-09 10:25:08,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2020-12-09 10:25:08,536 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 14 [2020-12-09 10:25:08,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:25:08,536 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2020-12-09 10:25:08,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 10:25:08,537 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2020-12-09 10:25:08,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 10:25:08,537 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:25:08,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:25:08,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-09 10:25:08,738 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 10:25:08,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:25:08,739 INFO L82 PathProgramCache]: Analyzing trace with hash 638736065, now seen corresponding path program 1 times [2020-12-09 10:25:08,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:25:08,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103164547] [2020-12-09 10:25:08,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan/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 [2020-12-09 10:25:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:25:08,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 10:25:08,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:25:08,894 INFO L382 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 [2020-12-09 10:25:08,895 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 10:25:08,901 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 10:25:08,901 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 10:25:08,901 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2020-12-09 10:25:08,925 INFO L348 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-12-09 10:25:08,926 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2020-12-09 10:25:08,926 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 10:25:08,928 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 10:25:08,929 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 10:25:08,929 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:7 [2020-12-09 10:25:08,946 INFO L382 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 17 treesize of output 9 [2020-12-09 10:25:08,947 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 10:25:08,948 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 10:25:08,948 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 10:25:08,948 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:3 [2020-12-09 10:25:08,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:25:08,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 10:25:08,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103164547] [2020-12-09 10:25:08,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:25:08,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 10:25:08,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294989958] [2020-12-09 10:25:08,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 10:25:08,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:25:08,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 10:25:08,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-09 10:25:08,958 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand 7 states. [2020-12-09 10:25:09,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:25:09,331 INFO L93 Difference]: Finished difference Result 162 states and 173 transitions. [2020-12-09 10:25:09,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 10:25:09,332 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-12-09 10:25:09,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:25:09,333 INFO L225 Difference]: With dead ends: 162 [2020-12-09 10:25:09,333 INFO L226 Difference]: Without dead ends: 162 [2020-12-09 10:25:09,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-09 10:25:09,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-09 10:25:09,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 81. [2020-12-09 10:25:09,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-09 10:25:09,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 91 transitions. [2020-12-09 10:25:09,336 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 91 transitions. Word has length 14 [2020-12-09 10:25:09,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:25:09,337 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 91 transitions. [2020-12-09 10:25:09,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 10:25:09,337 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 91 transitions. [2020-12-09 10:25:09,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 10:25:09,337 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:25:09,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:25:09,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-09 10:25:09,539 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 10:25:09,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:25:09,540 INFO L82 PathProgramCache]: Analyzing trace with hash -402595901, now seen corresponding path program 1 times [2020-12-09 10:25:09,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:25:09,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25826818] [2020-12-09 10:25:09,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f1b4a46-952e-4ce0-8160-fc6f795e207e/bin/utaipan/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 [2020-12-09 10:25:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 10:25:09,604 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 10:25:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 10:25:09,633 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 10:25:09,666 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-12-09 10:25:09,666 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 10:25:09,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-09 10:25:09,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 10:25:09 BoogieIcfgContainer [2020-12-09 10:25:09,920 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 10:25:09,921 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 10:25:09,921 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 10:25:09,921 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 10:25:09,921 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:25:03" (3/4) ... [2020-12-09 10:25:09,924 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 10:25:09,924 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 10:25:09,926 INFO L168 Benchmark]: Toolchain (without parser) took 7403.44 ms. Allocated memory was 65.0 MB in the beginning and 117.4 MB in the end (delta: 52.4 MB). Free memory was 46.9 MB in the beginning and 94.0 MB in the end (delta: -47.1 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2020-12-09 10:25:09,926 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 65.0 MB. Free memory is still 47.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:25:09,926 INFO L168 Benchmark]: CACSL2BoogieTranslator took 383.76 ms. Allocated memory is still 65.0 MB. Free memory was 46.7 MB in the beginning and 34.0 MB in the end (delta: 12.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 10:25:09,927 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.62 ms. Allocated memory is still 65.0 MB. Free memory was 34.0 MB in the beginning and 31.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 10:25:09,927 INFO L168 Benchmark]: Boogie Preprocessor took 36.59 ms. Allocated memory was 65.0 MB in the beginning and 96.5 MB in the end (delta: 31.5 MB). Free memory was 31.8 MB in the beginning and 79.1 MB in the end (delta: -47.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2020-12-09 10:25:09,928 INFO L168 Benchmark]: RCFGBuilder took 523.06 ms. Allocated memory is still 96.5 MB. Free memory was 79.1 MB in the beginning and 78.2 MB in the end (delta: 893.8 kB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. [2020-12-09 10:25:09,928 INFO L168 Benchmark]: TraceAbstraction took 6409.16 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 78.2 MB in the beginning and 95.0 MB in the end (delta: -16.8 MB). Peak memory consumption was 64.4 MB. Max. memory is 16.1 GB. [2020-12-09 10:25:09,929 INFO L168 Benchmark]: Witness Printer took 3.98 ms. Allocated memory is still 117.4 MB. Free memory is still 94.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:25:09,931 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 65.0 MB. Free memory is still 47.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 383.76 ms. Allocated memory is still 65.0 MB. Free memory was 46.7 MB in the beginning and 34.0 MB in the end (delta: 12.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.62 ms. Allocated memory is still 65.0 MB. Free memory was 34.0 MB in the beginning and 31.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.59 ms. Allocated memory was 65.0 MB in the beginning and 96.5 MB in the end (delta: 31.5 MB). Free memory was 31.8 MB in the beginning and 79.1 MB in the end (delta: -47.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 523.06 ms. Allocated memory is still 96.5 MB. Free memory was 79.1 MB in the beginning and 78.2 MB in the end (delta: 893.8 kB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6409.16 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 78.2 MB in the beginning and 95.0 MB in the end (delta: -16.8 MB). Peak memory consumption was 64.4 MB. Max. memory is 16.1 GB. * Witness Printer took 3.98 ms. Allocated memory is still 117.4 MB. Free memory is still 94.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 569]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 569. Possible FailurePath: [L533] int i = 0; [L534] int y = 0; [L535] List a = (List) malloc(sizeof(struct node)); [L536] COND FALSE !(a == 0) [L537] List t; [L538] List p = a; [L539] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L547] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L555] p->h = 3 [L556] p->n = (void*)__VERIFIER_nondet_ulong() [L557] i = 0 [L558] y = 0 [L559] p = a [L560] EXPR p->h [L560] COND FALSE !(p->h == 1) [L564] EXPR p->h [L564] COND FALSE !(p->h == 2) [L568] EXPR p->h [L568] COND TRUE p->h != 3 || (i + y) < 20 [L569] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 87 locations, 38 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.3s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 398 SDtfs, 731 SDslu, 720 SDs, 0 SdLazy, 1498 SolverSat, 120 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 319 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 73 ConstructedInterpolants, 0 QuantifiedInterpolants, 4142 SizeOfPredicates, 39 NumberOfNonLiveVariables, 422 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 9/9 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...