./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-properties/splice-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_04fa1e52-b80a-4926-b19d-a3b28206b5ac/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_04fa1e52-b80a-4926-b19d-a3b28206b5ac/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_04fa1e52-b80a-4926-b19d-a3b28206b5ac/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_04fa1e52-b80a-4926-b19d-a3b28206b5ac/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/splice-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_04fa1e52-b80a-4926-b19d-a3b28206b5ac/bin/utaipan/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_04fa1e52-b80a-4926-b19d-a3b28206b5ac/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 22d654ad48908d2db90206c3276d568dc9029be1 ............................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:03:47,747 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:03:47,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:03:47,791 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:03:47,791 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:03:47,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:03:47,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:03:47,823 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:03:47,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:03:47,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:03:47,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:03:47,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:03:47,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:03:47,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:03:47,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:03:47,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:03:47,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:03:47,849 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:03:47,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:03:47,859 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:03:47,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:03:47,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:03:47,868 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:03:47,869 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:03:47,878 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:03:47,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:03:47,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:03:47,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:03:47,886 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:03:47,887 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:03:47,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:03:47,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:03:47,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:03:47,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:03:47,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:03:47,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:03:47,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:03:47,895 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:03:47,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:03:47,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:03:47,898 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:03:47,900 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_04fa1e52-b80a-4926-b19d-a3b28206b5ac/bin/utaipan/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2020-11-22 13:03:47,947 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:03:47,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:03:47,949 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:03:47,949 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:03:47,949 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:03:47,949 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:03:47,950 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:03:47,950 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:03:47,950 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:03:47,950 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:03:47,951 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:03:47,951 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:03:47,952 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:03:47,952 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:03:47,952 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:03:47,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-22 13:03:47,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-22 13:03:47,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:03:47,954 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:03:47,954 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 13:03:47,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:03:47,954 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:03:47,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:03:47,955 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-22 13:03:47,955 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-22 13:03:47,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:03:47,955 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:03:47,955 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:03:47,956 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:03:47,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:03:47,956 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:03:47,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:03:47,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:03:47,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:03:47,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:03:47,957 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:03:47,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:03:47,958 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:03:47,958 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:03:47,958 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_04fa1e52-b80a-4926-b19d-a3b28206b5ac/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_04fa1e52-b80a-4926-b19d-a3b28206b5ac/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22d654ad48908d2db90206c3276d568dc9029be1 [2020-11-22 13:03:48,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:03:48,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:03:48,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:03:48,237 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:03:48,239 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:03:48,240 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_04fa1e52-b80a-4926-b19d-a3b28206b5ac/bin/utaipan/../../sv-benchmarks/c/list-properties/splice-1.i [2020-11-22 13:03:48,338 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_04fa1e52-b80a-4926-b19d-a3b28206b5ac/bin/utaipan/data/a07100fe3/1beb3ffb89fe415b8c0f78c7240fac9d/FLAGb5db7e4e2 [2020-11-22 13:03:48,832 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:03:48,833 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_04fa1e52-b80a-4926-b19d-a3b28206b5ac/sv-benchmarks/c/list-properties/splice-1.i [2020-11-22 13:03:48,858 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_04fa1e52-b80a-4926-b19d-a3b28206b5ac/bin/utaipan/data/a07100fe3/1beb3ffb89fe415b8c0f78c7240fac9d/FLAGb5db7e4e2 [2020-11-22 13:03:49,154 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_04fa1e52-b80a-4926-b19d-a3b28206b5ac/bin/utaipan/data/a07100fe3/1beb3ffb89fe415b8c0f78c7240fac9d [2020-11-22 13:03:49,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:03:49,158 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:03:49,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:03:49,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:03:49,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:03:49,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:03:49" (1/1) ... [2020-11-22 13:03:49,165 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2401f491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:49, skipping insertion in model container [2020-11-22 13:03:49,166 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:03:49" (1/1) ... [2020-11-22 13:03:49,173 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:03:49,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:03:49,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:03:49,704 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:03:49,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:03:49,822 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:03:49,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:49 WrapperNode [2020-11-22 13:03:49,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:03:49,823 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:03:49,823 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:03:49,823 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:03:49,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:49" (1/1) ... [2020-11-22 13:03:49,847 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:49" (1/1) ... [2020-11-22 13:03:49,869 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:03:49,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:03:49,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:03:49,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:03:49,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:49" (1/1) ... [2020-11-22 13:03:49,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:49" (1/1) ... [2020-11-22 13:03:49,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:49" (1/1) ... [2020-11-22 13:03:49,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:49" (1/1) ... [2020-11-22 13:03:49,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:49" (1/1) ... [2020-11-22 13:03:49,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:49" (1/1) ... [2020-11-22 13:03:49,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:49" (1/1) ... [2020-11-22 13:03:49,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:03:49,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:03:49,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:03:49,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:03:49,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_04fa1e52-b80a-4926-b19d-a3b28206b5ac/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 [2020-11-22 13:03:49,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-22 13:03:49,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 13:03:49,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-22 13:03:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-22 13:03:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:03:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-22 13:03:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:03:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:03:49,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:03:50,616 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:03:50,616 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-22 13:03:50,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:03:50 BoogieIcfgContainer [2020-11-22 13:03:50,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:03:50,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:03:50,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:03:50,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:03:50,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:03:49" (1/3) ... [2020-11-22 13:03:50,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7bb9f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:03:50, skipping insertion in model container [2020-11-22 13:03:50,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:49" (2/3) ... [2020-11-22 13:03:50,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7bb9f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:03:50, skipping insertion in model container [2020-11-22 13:03:50,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:03:50" (3/3) ... [2020-11-22 13:03:50,627 INFO L111 eAbstractionObserver]: Analyzing ICFG splice-1.i [2020-11-22 13:03:50,638 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:03:50,642 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 30 error locations. [2020-11-22 13:03:50,654 INFO L253 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2020-11-22 13:03:50,673 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:03:50,673 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-22 13:03:50,674 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:03:50,674 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:03:50,674 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:03:50,674 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:03:50,675 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:03:50,675 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:03:50,693 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2020-11-22 13:03:50,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-22 13:03:50,701 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:03:50,701 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-22 13:03:50,702 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-11-22 13:03:50,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:03:50,708 INFO L82 PathProgramCache]: Analyzing trace with hash 6037676, now seen corresponding path program 1 times [2020-11-22 13:03:50,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:03:50,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081724708] [2020-11-22 13:03:50,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:03:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:03:50,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:03:50,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081724708] [2020-11-22 13:03:50,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:03:50,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:03:50,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674973687] [2020-11-22 13:03:50,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:03:50,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:03:50,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:03:50,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:03:50,879 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 2 states. [2020-11-22 13:03:50,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:03:50,894 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2020-11-22 13:03:50,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:03:50,896 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-11-22 13:03:50,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:03:50,904 INFO L225 Difference]: With dead ends: 66 [2020-11-22 13:03:50,904 INFO L226 Difference]: Without dead ends: 63 [2020-11-22 13:03:50,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:03:50,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-22 13:03:50,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-11-22 13:03:50,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-22 13:03:50,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2020-11-22 13:03:50,939 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 4 [2020-11-22 13:03:50,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:03:50,939 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2020-11-22 13:03:50,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:03:50,940 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2020-11-22 13:03:50,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 13:03:50,940 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:03:50,940 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 13:03:50,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:03:50,941 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-11-22 13:03:50,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:03:50,942 INFO L82 PathProgramCache]: Analyzing trace with hash 187132298, now seen corresponding path program 1 times [2020-11-22 13:03:50,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:03:50,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602606785] [2020-11-22 13:03:50,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:03:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:03:51,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:03:51,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602606785] [2020-11-22 13:03:51,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:03:51,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:03:51,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495615367] [2020-11-22 13:03:51,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:03:51,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:03:51,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:03:51,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:03:51,012 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand 4 states. [2020-11-22 13:03:51,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:03:51,234 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2020-11-22 13:03:51,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:03:51,235 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-22 13:03:51,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:03:51,237 INFO L225 Difference]: With dead ends: 70 [2020-11-22 13:03:51,237 INFO L226 Difference]: Without dead ends: 70 [2020-11-22 13:03:51,238 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 [2020-11-22 13:03:51,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-11-22 13:03:51,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2020-11-22 13:03:51,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-11-22 13:03:51,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 77 transitions. [2020-11-22 13:03:51,258 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 77 transitions. Word has length 5 [2020-11-22 13:03:51,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:03:51,258 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 77 transitions. [2020-11-22 13:03:51,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:03:51,258 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 77 transitions. [2020-11-22 13:03:51,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 13:03:51,259 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:03:51,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 13:03:51,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:03:51,260 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-11-22 13:03:51,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:03:51,265 INFO L82 PathProgramCache]: Analyzing trace with hash 187132299, now seen corresponding path program 1 times [2020-11-22 13:03:51,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:03:51,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745941467] [2020-11-22 13:03:51,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:03:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:03:51,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:03:51,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745941467] [2020-11-22 13:03:51,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:03:51,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:03:51,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52979846] [2020-11-22 13:03:51,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:03:51,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:03:51,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:03:51,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:03:51,371 INFO L87 Difference]: Start difference. First operand 64 states and 77 transitions. Second operand 4 states. [2020-11-22 13:03:51,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:03:51,548 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2020-11-22 13:03:51,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:03:51,550 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-22 13:03:51,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:03:51,551 INFO L225 Difference]: With dead ends: 74 [2020-11-22 13:03:51,552 INFO L226 Difference]: Without dead ends: 74 [2020-11-22 13:03:51,552 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 [2020-11-22 13:03:51,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-22 13:03:51,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2020-11-22 13:03:51,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-11-22 13:03:51,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2020-11-22 13:03:51,558 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 5 [2020-11-22 13:03:51,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:03:51,559 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2020-11-22 13:03:51,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:03:51,559 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2020-11-22 13:03:51,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 13:03:51,560 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:03:51,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:03:51,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 13:03:51,560 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-11-22 13:03:51,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:03:51,561 INFO L82 PathProgramCache]: Analyzing trace with hash -9234414, now seen corresponding path program 1 times [2020-11-22 13:03:51,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:03:51,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147029827] [2020-11-22 13:03:51,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:03:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:03:51,603 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:03:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:03:51,637 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:03:51,674 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 13:03:51,674 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:03:51,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 13:03:51,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:03:51 BoogieIcfgContainer [2020-11-22 13:03:51,702 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:03:51,702 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:03:51,702 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:03:51,703 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:03:51,703 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:03:50" (3/4) ... [2020-11-22 13:03:51,705 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 13:03:51,758 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_04fa1e52-b80a-4926-b19d-a3b28206b5ac/bin/utaipan/witness.graphml [2020-11-22 13:03:51,758 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:03:51,760 INFO L168 Benchmark]: Toolchain (without parser) took 2601.31 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 58.8 MB in the beginning and 46.0 MB in the end (delta: 12.8 MB). Peak memory consumption was 30.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:03:51,761 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 94.4 MB. Free memory was 70.6 MB in the beginning and 70.6 MB in the end (delta: 30.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:03:51,762 INFO L168 Benchmark]: CACSL2BoogieTranslator took 663.14 ms. Allocated memory is still 94.4 MB. Free memory was 58.6 MB in the beginning and 59.1 MB in the end (delta: -582.3 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:03:51,762 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.77 ms. Allocated memory is still 94.4 MB. Free memory was 59.1 MB in the beginning and 57.2 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:03:51,763 INFO L168 Benchmark]: Boogie Preprocessor took 38.51 ms. Allocated memory is still 94.4 MB. Free memory was 57.2 MB in the beginning and 55.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:03:51,764 INFO L168 Benchmark]: RCFGBuilder took 710.03 ms. Allocated memory is still 94.4 MB. Free memory was 55.5 MB in the beginning and 55.2 MB in the end (delta: 260.5 kB). Peak memory consumption was 25.3 MB. Max. memory is 16.1 GB. [2020-11-22 13:03:51,764 INFO L168 Benchmark]: TraceAbstraction took 1081.56 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 55.2 MB in the beginning and 47.2 MB in the end (delta: 8.0 MB). Peak memory consumption was 26.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:03:51,765 INFO L168 Benchmark]: Witness Printer took 55.91 ms. Allocated memory is still 113.2 MB. Free memory was 47.2 MB in the beginning and 46.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:03:51,768 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 94.4 MB. Free memory was 70.6 MB in the beginning and 70.6 MB in the end (delta: 30.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 663.14 ms. Allocated memory is still 94.4 MB. Free memory was 58.6 MB in the beginning and 59.1 MB in the end (delta: -582.3 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.77 ms. Allocated memory is still 94.4 MB. Free memory was 59.1 MB in the beginning and 57.2 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.51 ms. Allocated memory is still 94.4 MB. Free memory was 57.2 MB in the beginning and 55.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 710.03 ms. Allocated memory is still 94.4 MB. Free memory was 55.5 MB in the beginning and 55.2 MB in the end (delta: 260.5 kB). Peak memory consumption was 25.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1081.56 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 55.2 MB in the beginning and 47.2 MB in the end (delta: 8.0 MB). Peak memory consumption was 26.5 MB. Max. memory is 16.1 GB. * Witness Printer took 55.91 ms. Allocated memory is still 113.2 MB. Free memory was 47.2 MB in the beginning and 46.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 531]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L532] int flag = 1; [L533] List a = (List) malloc(sizeof(struct node)); [L534] COND FALSE !(a == 0) [L535] List t; [L536] List l1; [L537] List l2; [L538] List b; [L539] List u; [L540] List p = a; [L541] COND FALSE !(__VERIFIER_nondet_int()) [L554] p->h = 3 [L555] EXPR a->h [L555] COND TRUE a->h == 3 [L555] return 0; - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 67 locations, 30 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 134 SDtfs, 194 SDslu, 29 SDs, 0 SdLazy, 136 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred 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, 3 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 233 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...