./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/locks/test_locks_15-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a33521c7-b6e6-421d-8d57-ff3f06eecaec/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a33521c7-b6e6-421d-8d57-ff3f06eecaec/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a33521c7-b6e6-421d-8d57-ff3f06eecaec/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a33521c7-b6e6-421d-8d57-ff3f06eecaec/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_15-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a33521c7-b6e6-421d-8d57-ff3f06eecaec/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a33521c7-b6e6-421d-8d57-ff3f06eecaec/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 04dfa849b43716e8587b0fc4953cadbe3968c4e3 ................................................................................................................................................................................................................................................................................................................................................................................................... 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_a33521c7-b6e6-421d-8d57-ff3f06eecaec/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a33521c7-b6e6-421d-8d57-ff3f06eecaec/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a33521c7-b6e6-421d-8d57-ff3f06eecaec/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a33521c7-b6e6-421d-8d57-ff3f06eecaec/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_15-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a33521c7-b6e6-421d-8d57-ff3f06eecaec/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a33521c7-b6e6-421d-8d57-ff3f06eecaec/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 04dfa849b43716e8587b0fc4953cadbe3968c4e3 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:02:55,797 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:02:55,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:02:55,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:02:55,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:02:55,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:02:55,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:02:55,861 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:02:55,863 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:02:55,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:02:55,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:02:55,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:02:55,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:02:55,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:02:55,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:02:55,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:02:55,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:02:55,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:02:55,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:02:55,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:02:55,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:02:55,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:02:55,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:02:55,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:02:55,892 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:02:55,896 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:02:55,896 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:02:55,898 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:02:55,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:02:55,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:02:55,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:02:55,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:02:55,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:02:55,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:02:55,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:02:55,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:02:55,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:02:55,914 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:02:55,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:02:55,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:02:55,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:02:55,919 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a33521c7-b6e6-421d-8d57-ff3f06eecaec/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-11-22 13:02:55,955 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:02:55,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:02:55,956 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:02:55,957 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:02:55,957 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:02:55,957 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:02:55,957 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:02:55,958 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:02:55,958 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:02:55,958 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:02:55,959 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:02:55,959 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:02:55,959 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:02:55,960 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:02:55,960 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:02:55,961 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-22 13:02:55,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-22 13:02:55,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:02:55,962 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:02:55,962 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 13:02:55,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:02:55,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:02:55,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:02:55,963 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-22 13:02:55,964 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-22 13:02:55,964 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-22 13:02:55,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:02:55,965 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:02:55,966 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:02:55,966 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:02:55,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:02:55,967 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:02:55,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:02:55,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:02:55,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:02:55,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:02:55,968 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:02:55,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:02:55,968 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:02:55,968 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:02:55,969 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_a33521c7-b6e6-421d-8d57-ff3f06eecaec/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a33521c7-b6e6-421d-8d57-ff3f06eecaec/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04dfa849b43716e8587b0fc4953cadbe3968c4e3 [2020-11-22 13:02:56,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:02:56,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:02:56,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:02:56,258 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:02:56,259 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:02:56,260 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a33521c7-b6e6-421d-8d57-ff3f06eecaec/bin/utaipan/../../sv-benchmarks/c/locks/test_locks_15-1.c [2020-11-22 13:02:56,368 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a33521c7-b6e6-421d-8d57-ff3f06eecaec/bin/utaipan/data/f2a3c7917/2b8aa272690748228c559f791b8db466/FLAG9cf117ed0 [2020-11-22 13:02:56,818 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:02:56,819 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a33521c7-b6e6-421d-8d57-ff3f06eecaec/sv-benchmarks/c/locks/test_locks_15-1.c [2020-11-22 13:02:56,829 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a33521c7-b6e6-421d-8d57-ff3f06eecaec/bin/utaipan/data/f2a3c7917/2b8aa272690748228c559f791b8db466/FLAG9cf117ed0 [2020-11-22 13:02:57,211 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a33521c7-b6e6-421d-8d57-ff3f06eecaec/bin/utaipan/data/f2a3c7917/2b8aa272690748228c559f791b8db466 [2020-11-22 13:02:57,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:02:57,215 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:02:57,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:02:57,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:02:57,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:02:57,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:02:57" (1/1) ... [2020-11-22 13:02:57,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e9ada40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:57, skipping insertion in model container [2020-11-22 13:02:57,223 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:02:57" (1/1) ... [2020-11-22 13:02:57,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:02:57,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:02:57,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:02:57,450 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:02:57,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:02:57,517 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:02:57,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:57 WrapperNode [2020-11-22 13:02:57,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:02:57,521 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:02:57,521 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:02:57,522 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:02:57,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:57" (1/1) ... [2020-11-22 13:02:57,547 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:57" (1/1) ... [2020-11-22 13:02:57,583 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:02:57,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:02:57,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:02:57,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:02:57,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:57" (1/1) ... [2020-11-22 13:02:57,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:57" (1/1) ... [2020-11-22 13:02:57,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:57" (1/1) ... [2020-11-22 13:02:57,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:57" (1/1) ... [2020-11-22 13:02:57,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:57" (1/1) ... [2020-11-22 13:02:57,604 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:57" (1/1) ... [2020-11-22 13:02:57,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:57" (1/1) ... [2020-11-22 13:02:57,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:02:57,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:02:57,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:02:57,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:02:57,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a33521c7-b6e6-421d-8d57-ff3f06eecaec/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 13:02:57,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:02:57,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:02:57,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:02:57,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:02:58,513 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:02:58,514 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-22 13:02:58,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:02:58 BoogieIcfgContainer [2020-11-22 13:02:58,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:02:58,518 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:02:58,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:02:58,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:02:58,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:02:57" (1/3) ... [2020-11-22 13:02:58,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9a36ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:02:58, skipping insertion in model container [2020-11-22 13:02:58,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:02:57" (2/3) ... [2020-11-22 13:02:58,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9a36ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:02:58, skipping insertion in model container [2020-11-22 13:02:58,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:02:58" (3/3) ... [2020-11-22 13:02:58,525 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_15-1.c [2020-11-22 13:02:58,535 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:02:58,542 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-22 13:02:58,551 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-22 13:02:58,568 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:02:58,568 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-22 13:02:58,568 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:02:58,569 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:02:58,569 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:02:58,569 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:02:58,569 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:02:58,569 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:02:58,582 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-11-22 13:02:58,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-22 13:02:58,588 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:02:58,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-22 13:02:58,589 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:02:58,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:02:58,594 INFO L82 PathProgramCache]: Analyzing trace with hash 9710102, now seen corresponding path program 1 times [2020-11-22 13:02:58,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:02:58,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449279010] [2020-11-22 13:02:58,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:02:58,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:02:58,719 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 13:02:58,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449279010] [2020-11-22 13:02:58,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:02:58,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:02:58,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131364754] [2020-11-22 13:02:58,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:02:58,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:02:58,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:02:58,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:02:58,740 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2020-11-22 13:02:58,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:02:58,754 INFO L93 Difference]: Finished difference Result 39 states and 68 transitions. [2020-11-22 13:02:58,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:02:58,755 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-11-22 13:02:58,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:02:58,763 INFO L225 Difference]: With dead ends: 39 [2020-11-22 13:02:58,764 INFO L226 Difference]: Without dead ends: 38 [2020-11-22 13:02:58,765 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 13:02:58,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-22 13:02:58,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-11-22 13:02:58,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-22 13:02:58,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 67 transitions. [2020-11-22 13:02:58,796 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 67 transitions. Word has length 4 [2020-11-22 13:02:58,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:02:58,797 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 67 transitions. [2020-11-22 13:02:58,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:02:58,797 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 67 transitions. [2020-11-22 13:02:58,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 13:02:58,797 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:02:58,797 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 13:02:58,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:02:58,798 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:02:58,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:02:58,799 INFO L82 PathProgramCache]: Analyzing trace with hash 292182598, now seen corresponding path program 1 times [2020-11-22 13:02:58,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:02:58,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000397710] [2020-11-22 13:02:58,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:02:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:02:58,856 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 13:02:58,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000397710] [2020-11-22 13:02:58,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:02:58,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-22 13:02:58,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444375121] [2020-11-22 13:02:58,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:02:58,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:02:58,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:02:58,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:02:58,859 INFO L87 Difference]: Start difference. First operand 38 states and 67 transitions. Second operand 3 states. [2020-11-22 13:02:58,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:02:58,865 INFO L93 Difference]: Finished difference Result 37 states and 66 transitions. [2020-11-22 13:02:58,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:02:58,866 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-22 13:02:58,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:02:58,867 INFO L225 Difference]: With dead ends: 37 [2020-11-22 13:02:58,867 INFO L226 Difference]: Without dead ends: 35 [2020-11-22 13:02:58,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:02:58,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-22 13:02:58,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-22 13:02:58,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-22 13:02:58,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 64 transitions. [2020-11-22 13:02:58,873 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 64 transitions. Word has length 5 [2020-11-22 13:02:58,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:02:58,873 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 64 transitions. [2020-11-22 13:02:58,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:02:58,874 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 64 transitions. [2020-11-22 13:02:58,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 13:02:58,874 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:02:58,874 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 13:02:58,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:02:58,875 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:02:58,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:02:58,875 INFO L82 PathProgramCache]: Analyzing trace with hash 476625083, now seen corresponding path program 1 times [2020-11-22 13:02:58,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:02:58,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594281722] [2020-11-22 13:02:58,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:02:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:02:58,919 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:02:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:02:58,997 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:02:59,035 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 13:02:59,036 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:02:59,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 13:02:59,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:02:59 BoogieIcfgContainer [2020-11-22 13:02:59,067 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:02:59,071 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:02:59,071 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:02:59,071 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:02:59,076 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:02:58" (3/4) ... [2020-11-22 13:02:59,079 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-22 13:02:59,080 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:02:59,081 INFO L168 Benchmark]: Toolchain (without parser) took 1865.00 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 59.7 MB in the beginning and 90.8 MB in the end (delta: -31.1 MB). Peak memory consumption was 1.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:02:59,082 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 75.5 MB. Free memory is still 40.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:02:59,083 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.43 ms. Allocated memory is still 92.3 MB. Free memory was 59.3 MB in the beginning and 67.4 MB in the end (delta: -8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:02:59,083 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.71 ms. Allocated memory is still 92.3 MB. Free memory was 67.4 MB in the beginning and 65.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:02:59,084 INFO L168 Benchmark]: Boogie Preprocessor took 25.39 ms. Allocated memory is still 92.3 MB. Free memory was 65.8 MB in the beginning and 64.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:02:59,085 INFO L168 Benchmark]: RCFGBuilder took 906.39 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 64.1 MB in the beginning and 79.3 MB in the end (delta: -15.2 MB). Peak memory consumption was 34.7 MB. Max. memory is 16.1 GB. [2020-11-22 13:02:59,089 INFO L168 Benchmark]: TraceAbstraction took 549.63 ms. Allocated memory is still 123.7 MB. Free memory was 79.3 MB in the beginning and 90.8 MB in the end (delta: -11.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:02:59,090 INFO L168 Benchmark]: Witness Printer took 9.09 ms. Allocated memory is still 123.7 MB. Free memory was 90.8 MB in the beginning and 90.8 MB in the end (delta: 2.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:02:59,093 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 75.5 MB. Free memory is still 40.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 303.43 ms. Allocated memory is still 92.3 MB. Free memory was 59.3 MB in the beginning and 67.4 MB in the end (delta: -8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.71 ms. Allocated memory is still 92.3 MB. Free memory was 67.4 MB in the beginning and 65.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.39 ms. Allocated memory is still 92.3 MB. Free memory was 65.8 MB in the beginning and 64.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 906.39 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 64.1 MB in the beginning and 79.3 MB in the end (delta: -15.2 MB). Peak memory consumption was 34.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 549.63 ms. Allocated memory is still 123.7 MB. Free memory was 79.3 MB in the beginning and 90.8 MB in the end (delta: -11.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 9.09 ms. Allocated memory is still 123.7 MB. Free memory was 90.8 MB in the beginning and 90.8 MB in the end (delta: 2.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 3. Possible FailurePath: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L44] int p13 = __VERIFIER_nondet_int(); [L45] int lk13; [L47] int p14 = __VERIFIER_nondet_int(); [L48] int lk14; [L50] int p15 = __VERIFIER_nondet_int(); [L51] int lk15; [L54] int cond; [L56] COND TRUE 1 [L57] cond = __VERIFIER_nondet_int() [L58] COND FALSE !(cond == 0) [L61] lk1 = 0 [L63] lk2 = 0 [L65] lk3 = 0 [L67] lk4 = 0 [L69] lk5 = 0 [L71] lk6 = 0 [L73] lk7 = 0 [L75] lk8 = 0 [L77] lk9 = 0 [L79] lk10 = 0 [L81] lk11 = 0 [L83] lk12 = 0 [L85] lk13 = 0 [L87] lk14 = 0 [L89] lk15 = 0 [L93] COND FALSE !(p1 != 0) [L97] COND FALSE !(p2 != 0) [L101] COND TRUE p3 != 0 [L102] lk3 = 1 [L105] COND TRUE p4 != 0 [L106] lk4 = 1 [L109] COND FALSE !(p5 != 0) [L113] COND TRUE p6 != 0 [L114] lk6 = 1 [L117] COND FALSE !(p7 != 0) [L121] COND TRUE p8 != 0 [L122] lk8 = 1 [L125] COND TRUE p9 != 0 [L126] lk9 = 1 [L129] COND TRUE p10 != 0 [L130] lk10 = 1 [L133] COND FALSE !(p11 != 0) [L137] COND TRUE p12 != 0 [L138] lk12 = 1 [L141] COND TRUE p13 != 0 [L142] lk13 = 1 [L145] COND FALSE !(p14 != 0) [L149] COND TRUE p15 != 0 [L150] lk15 = 1 [L155] COND FALSE !(p1 != 0) [L160] COND FALSE !(p2 != 0) [L3] __assert_fail("0", "test_locks_15-1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 134 SDtfs, 62 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 57 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:03:01,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:03:01,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:03:01,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:03:01,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:03:01,495 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:03:01,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:03:01,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:03:01,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:03:01,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:03:01,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:03:01,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:03:01,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:03:01,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:03:01,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:03:01,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:03:01,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:03:01,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:03:01,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:03:01,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:03:01,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:03:01,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:03:01,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:03:01,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:03:01,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:03:01,541 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:03:01,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:03:01,543 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:03:01,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:03:01,544 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:03:01,545 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:03:01,546 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:03:01,547 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:03:01,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:03:01,549 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:03:01,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:03:01,550 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:03:01,550 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:03:01,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:03:01,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:03:01,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:03:01,553 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a33521c7-b6e6-421d-8d57-ff3f06eecaec/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-11-22 13:03:01,580 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:03:01,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:03:01,581 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:03:01,581 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:03:01,581 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:03:01,581 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:03:01,582 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:03:01,582 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:03:01,582 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:03:01,583 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-22 13:03:01,583 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-22 13:03:01,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:03:01,583 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:03:01,584 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 13:03:01,584 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:03:01,584 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:03:01,584 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:03:01,584 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-22 13:03:01,585 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-22 13:03:01,585 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-22 13:03:01,585 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:03:01,585 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:03:01,585 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 13:03:01,586 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 13:03:01,586 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:03:01,586 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:03:01,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:03:01,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 13:03:01,587 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:03:01,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:03:01,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:03:01,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:03:01,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:03:01,588 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 13:03:01,588 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 13:03:01,588 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:03:01,588 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:03:01,589 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_a33521c7-b6e6-421d-8d57-ff3f06eecaec/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a33521c7-b6e6-421d-8d57-ff3f06eecaec/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04dfa849b43716e8587b0fc4953cadbe3968c4e3 [2020-11-22 13:03:01,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:03:01,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:03:01,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:03:01,998 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:03:02,001 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:03:02,002 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a33521c7-b6e6-421d-8d57-ff3f06eecaec/bin/utaipan/../../sv-benchmarks/c/locks/test_locks_15-1.c [2020-11-22 13:03:02,078 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a33521c7-b6e6-421d-8d57-ff3f06eecaec/bin/utaipan/data/06b8d636a/27bc6f6ffdd54785ac1e1a79308842f5/FLAG689226d13 [2020-11-22 13:03:02,562 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:03:02,562 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a33521c7-b6e6-421d-8d57-ff3f06eecaec/sv-benchmarks/c/locks/test_locks_15-1.c [2020-11-22 13:03:02,580 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a33521c7-b6e6-421d-8d57-ff3f06eecaec/bin/utaipan/data/06b8d636a/27bc6f6ffdd54785ac1e1a79308842f5/FLAG689226d13 [2020-11-22 13:03:02,951 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a33521c7-b6e6-421d-8d57-ff3f06eecaec/bin/utaipan/data/06b8d636a/27bc6f6ffdd54785ac1e1a79308842f5 [2020-11-22 13:03:02,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:03:02,955 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:03:02,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:03:02,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:03:02,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:03:02,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:03:02" (1/1) ... [2020-11-22 13:03:02,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7812e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:02, skipping insertion in model container [2020-11-22 13:03:02,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:03:02" (1/1) ... [2020-11-22 13:03:02,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:03:02,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:03:03,157 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:03:03,170 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:03:03,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:03:03,243 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:03:03,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:03 WrapperNode [2020-11-22 13:03:03,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:03:03,245 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:03:03,245 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:03:03,245 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:03:03,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:03" (1/1) ... [2020-11-22 13:03:03,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:03" (1/1) ... [2020-11-22 13:03:03,297 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:03:03,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:03:03,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:03:03,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:03:03,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:03" (1/1) ... [2020-11-22 13:03:03,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:03" (1/1) ... [2020-11-22 13:03:03,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:03" (1/1) ... [2020-11-22 13:03:03,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:03" (1/1) ... [2020-11-22 13:03:03,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:03" (1/1) ... [2020-11-22 13:03:03,325 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:03" (1/1) ... [2020-11-22 13:03:03,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:03" (1/1) ... [2020-11-22 13:03:03,331 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:03:03,332 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:03:03,332 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:03:03,332 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:03:03,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a33521c7-b6e6-421d-8d57-ff3f06eecaec/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 13:03:03,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:03:03,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:03:03,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 13:03:03,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:03:04,071 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:03:04,072 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-22 13:03:04,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:03:04 BoogieIcfgContainer [2020-11-22 13:03:04,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:03:04,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:03:04,076 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:03:04,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:03:04,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:03:02" (1/3) ... [2020-11-22 13:03:04,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58776dfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:03:04, skipping insertion in model container [2020-11-22 13:03:04,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:03" (2/3) ... [2020-11-22 13:03:04,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58776dfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:03:04, skipping insertion in model container [2020-11-22 13:03:04,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:03:04" (3/3) ... [2020-11-22 13:03:04,083 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_15-1.c [2020-11-22 13:03:04,093 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:03:04,098 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-22 13:03:04,109 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-22 13:03:04,128 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:03:04,128 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-22 13:03:04,129 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:03:04,129 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:03:04,129 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:03:04,129 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:03:04,129 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:03:04,129 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:03:04,142 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2020-11-22 13:03:04,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 13:03:04,154 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:03:04,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 13:03:04,155 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:03:04,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:03:04,161 INFO L82 PathProgramCache]: Analyzing trace with hash 28959893, now seen corresponding path program 1 times [2020-11-22 13:03:04,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:03:04,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1656756424] [2020-11-22 13:03:04,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a33521c7-b6e6-421d-8d57-ff3f06eecaec/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 [2020-11-22 13:03:04,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:03:04,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-22 13:03:04,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:03:04,252 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 13:03:04,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:03:04,255 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 13:03:04,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1656756424] [2020-11-22 13:03:04,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:03:04,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 13:03:04,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544402302] [2020-11-22 13:03:04,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:03:04,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:03:04,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:03:04,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:03:04,277 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 2 states. [2020-11-22 13:03:04,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:03:04,292 INFO L93 Difference]: Finished difference Result 56 states and 100 transitions. [2020-11-22 13:03:04,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:03:04,294 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-11-22 13:03:04,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:03:04,303 INFO L225 Difference]: With dead ends: 56 [2020-11-22 13:03:04,303 INFO L226 Difference]: Without dead ends: 54 [2020-11-22 13:03:04,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 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 13:03:04,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-22 13:03:04,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-22 13:03:04,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-22 13:03:04,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-11-22 13:03:04,347 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 5 [2020-11-22 13:03:04,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:03:04,347 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-11-22 13:03:04,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:03:04,348 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-11-22 13:03:04,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 13:03:04,348 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:03:04,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 13:03:04,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 13:03:04,564 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:03:04,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:03:04,565 INFO L82 PathProgramCache]: Analyzing trace with hash 889700685, now seen corresponding path program 1 times [2020-11-22 13:03:04,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:03:04,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043920465] [2020-11-22 13:03:04,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a33521c7-b6e6-421d-8d57-ff3f06eecaec/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 [2020-11-22 13:03:04,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:03:04,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:03:04,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:03:04,642 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 13:03:04,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:03:04,644 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 13:03:04,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043920465] [2020-11-22 13:03:04,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:03:04,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 13:03:04,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754361798] [2020-11-22 13:03:04,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:03:04,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:03:04,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:03:04,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:03:04,648 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 3 states. [2020-11-22 13:03:04,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:03:04,666 INFO L93 Difference]: Finished difference Result 53 states and 97 transitions. [2020-11-22 13:03:04,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:03:04,668 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-22 13:03:04,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:03:04,672 INFO L225 Difference]: With dead ends: 53 [2020-11-22 13:03:04,672 INFO L226 Difference]: Without dead ends: 51 [2020-11-22 13:03:04,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:03:04,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-22 13:03:04,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-11-22 13:03:04,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-22 13:03:04,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 95 transitions. [2020-11-22 13:03:04,690 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 95 transitions. Word has length 6 [2020-11-22 13:03:04,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:03:04,691 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 95 transitions. [2020-11-22 13:03:04,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:03:04,692 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 95 transitions. [2020-11-22 13:03:04,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-22 13:03:04,694 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:03:04,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:03:04,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 13:03:04,910 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:03:04,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:03:04,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1188553263, now seen corresponding path program 1 times [2020-11-22 13:03:04,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:03:04,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443262803] [2020-11-22 13:03:04,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a33521c7-b6e6-421d-8d57-ff3f06eecaec/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 [2020-11-22 13:03:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:03:04,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:03:04,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:03:04,980 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 13:03:04,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:03:04,986 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 13:03:04,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1443262803] [2020-11-22 13:03:04,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:03:04,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-22 13:03:04,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646172152] [2020-11-22 13:03:04,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:03:04,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:03:04,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:03:04,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:03:04,989 INFO L87 Difference]: Start difference. First operand 51 states and 95 transitions. Second operand 3 states. [2020-11-22 13:03:05,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:03:05,028 INFO L93 Difference]: Finished difference Result 99 states and 184 transitions. [2020-11-22 13:03:05,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:03:05,028 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-22 13:03:05,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:03:05,030 INFO L225 Difference]: With dead ends: 99 [2020-11-22 13:03:05,030 INFO L226 Difference]: Without dead ends: 99 [2020-11-22 13:03:05,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:03:05,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-11-22 13:03:05,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2020-11-22 13:03:05,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-22 13:03:05,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 183 transitions. [2020-11-22 13:03:05,053 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 183 transitions. Word has length 22 [2020-11-22 13:03:05,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:03:05,053 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 183 transitions. [2020-11-22 13:03:05,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:03:05,054 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 183 transitions. [2020-11-22 13:03:05,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-22 13:03:05,055 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:03:05,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:03:05,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 13:03:05,270 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:03:05,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:03:05,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1188560455, now seen corresponding path program 1 times [2020-11-22 13:03:05,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:03:05,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [610337296] [2020-11-22 13:03:05,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a33521c7-b6e6-421d-8d57-ff3f06eecaec/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 [2020-11-22 13:03:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:03:05,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:03:05,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:03:05,372 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 13:03:05,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:03:05,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:03:05,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [610337296] [2020-11-22 13:03:05,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:03:05,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-22 13:03:05,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580213695] [2020-11-22 13:03:05,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:03:05,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:03:05,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:03:05,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:03:05,382 INFO L87 Difference]: Start difference. First operand 97 states and 183 transitions. Second operand 3 states. [2020-11-22 13:03:05,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:03:05,398 INFO L93 Difference]: Finished difference Result 98 states and 184 transitions. [2020-11-22 13:03:05,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:03:05,399 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-22 13:03:05,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:03:05,401 INFO L225 Difference]: With dead ends: 98 [2020-11-22 13:03:05,401 INFO L226 Difference]: Without dead ends: 98 [2020-11-22 13:03:05,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:03:05,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-11-22 13:03:05,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-11-22 13:03:05,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-11-22 13:03:05,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 184 transitions. [2020-11-22 13:03:05,411 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 184 transitions. Word has length 22 [2020-11-22 13:03:05,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:03:05,412 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 184 transitions. [2020-11-22 13:03:05,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:03:05,412 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 184 transitions. [2020-11-22 13:03:05,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-22 13:03:05,413 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:03:05,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:03:05,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-22 13:03:05,626 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:03:05,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:03:05,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1112269327, now seen corresponding path program 1 times [2020-11-22 13:03:05,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:03:05,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406230394] [2020-11-22 13:03:05,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a33521c7-b6e6-421d-8d57-ff3f06eecaec/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 [2020-11-22 13:03:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:03:05,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:03:05,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:03:05,688 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 13:03:05,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:03:05,692 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 13:03:05,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406230394] [2020-11-22 13:03:05,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:03:05,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-22 13:03:05,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167864404] [2020-11-22 13:03:05,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:03:05,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:03:05,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:03:05,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:03:05,695 INFO L87 Difference]: Start difference. First operand 98 states and 184 transitions. Second operand 3 states. [2020-11-22 13:03:05,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:03:05,726 INFO L93 Difference]: Finished difference Result 137 states and 251 transitions. [2020-11-22 13:03:05,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:03:05,727 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-22 13:03:05,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:03:05,728 INFO L225 Difference]: With dead ends: 137 [2020-11-22 13:03:05,728 INFO L226 Difference]: Without dead ends: 137 [2020-11-22 13:03:05,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:03:05,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-11-22 13:03:05,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 135. [2020-11-22 13:03:05,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-11-22 13:03:05,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 250 transitions. [2020-11-22 13:03:05,739 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 250 transitions. Word has length 22 [2020-11-22 13:03:05,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:03:05,739 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 250 transitions. [2020-11-22 13:03:05,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:03:05,739 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 250 transitions. [2020-11-22 13:03:05,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-22 13:03:05,740 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:03:05,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:03:05,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-22 13:03:05,941 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:03:05,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:03:05,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1112262135, now seen corresponding path program 1 times [2020-11-22 13:03:05,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:03:05,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [206009271] [2020-11-22 13:03:05,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a33521c7-b6e6-421d-8d57-ff3f06eecaec/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 [2020-11-22 13:03:06,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:03:06,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:03:06,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:03:06,019 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 13:03:06,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:03:06,023 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 13:03:06,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [206009271] [2020-11-22 13:03:06,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:03:06,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-22 13:03:06,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081435737] [2020-11-22 13:03:06,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:03:06,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:03:06,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:03:06,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:03:06,025 INFO L87 Difference]: Start difference. First operand 135 states and 250 transitions. Second operand 3 states. [2020-11-22 13:03:06,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:03:06,043 INFO L93 Difference]: Finished difference Result 135 states and 244 transitions. [2020-11-22 13:03:06,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:03:06,044 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-22 13:03:06,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:03:06,045 INFO L225 Difference]: With dead ends: 135 [2020-11-22 13:03:06,045 INFO L226 Difference]: Without dead ends: 135 [2020-11-22 13:03:06,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:03:06,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-11-22 13:03:06,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2020-11-22 13:03:06,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-11-22 13:03:06,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 243 transitions. [2020-11-22 13:03:06,053 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 243 transitions. Word has length 22 [2020-11-22 13:03:06,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:03:06,053 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 243 transitions. [2020-11-22 13:03:06,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:03:06,054 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 243 transitions. [2020-11-22 13:03:06,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-22 13:03:06,055 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:03:06,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:03:06,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-22 13:03:06,256 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:03:06,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:03:06,256 INFO L82 PathProgramCache]: Analyzing trace with hash -476078575, now seen corresponding path program 1 times [2020-11-22 13:03:06,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:03:06,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444935548] [2020-11-22 13:03:06,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a33521c7-b6e6-421d-8d57-ff3f06eecaec/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 [2020-11-22 13:03:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:03:06,313 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:03:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:03:06,346 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:03:06,402 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-22 13:03:06,402 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:03:06,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-22 13:03:06,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:03:06 BoogieIcfgContainer [2020-11-22 13:03:06,673 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:03:06,674 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:03:06,674 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:03:06,674 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:03:06,674 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:03:04" (3/4) ... [2020-11-22 13:03:06,677 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-22 13:03:06,678 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:03:06,680 INFO L168 Benchmark]: Toolchain (without parser) took 3723.26 ms. Allocated memory was 54.5 MB in the beginning and 81.8 MB in the end (delta: 27.3 MB). Free memory was 32.7 MB in the beginning and 59.2 MB in the end (delta: -26.5 MB). Peak memory consumption was 213.5 kB. Max. memory is 16.1 GB. [2020-11-22 13:03:06,680 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 54.5 MB. Free memory was 36.2 MB in the beginning and 36.2 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:03:06,681 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.96 ms. Allocated memory is still 54.5 MB. Free memory was 32.6 MB in the beginning and 36.4 MB in the end (delta: -3.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:03:06,681 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.23 ms. Allocated memory is still 54.5 MB. Free memory was 36.4 MB in the beginning and 34.5 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:03:06,682 INFO L168 Benchmark]: Boogie Preprocessor took 32.80 ms. Allocated memory is still 54.5 MB. Free memory was 34.5 MB in the beginning and 33.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:03:06,683 INFO L168 Benchmark]: RCFGBuilder took 741.74 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 32.9 MB in the beginning and 35.1 MB in the end (delta: -2.2 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:03:06,684 INFO L168 Benchmark]: TraceAbstraction took 2597.74 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 34.6 MB in the beginning and 59.2 MB in the end (delta: -24.6 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:03:06,684 INFO L168 Benchmark]: Witness Printer took 4.06 ms. Allocated memory is still 81.8 MB. Free memory is still 59.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:03:06,689 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 54.5 MB. Free memory was 36.2 MB in the beginning and 36.2 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 287.96 ms. Allocated memory is still 54.5 MB. Free memory was 32.6 MB in the beginning and 36.4 MB in the end (delta: -3.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.23 ms. Allocated memory is still 54.5 MB. Free memory was 36.4 MB in the beginning and 34.5 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.80 ms. Allocated memory is still 54.5 MB. Free memory was 34.5 MB in the beginning and 33.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 741.74 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 32.9 MB in the beginning and 35.1 MB in the end (delta: -2.2 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2597.74 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 34.6 MB in the beginning and 59.2 MB in the end (delta: -24.6 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.06 ms. Allocated memory is still 81.8 MB. Free memory is still 59.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 3. Possible FailurePath: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L44] int p13 = __VERIFIER_nondet_int(); [L45] int lk13; [L47] int p14 = __VERIFIER_nondet_int(); [L48] int lk14; [L50] int p15 = __VERIFIER_nondet_int(); [L51] int lk15; [L54] int cond; [L56] COND TRUE 1 [L57] cond = __VERIFIER_nondet_int() [L58] COND FALSE !(cond == 0) [L61] lk1 = 0 [L63] lk2 = 0 [L65] lk3 = 0 [L67] lk4 = 0 [L69] lk5 = 0 [L71] lk6 = 0 [L73] lk7 = 0 [L75] lk8 = 0 [L77] lk9 = 0 [L79] lk10 = 0 [L81] lk11 = 0 [L83] lk12 = 0 [L85] lk13 = 0 [L87] lk14 = 0 [L89] lk15 = 0 [L93] COND FALSE !(p1 != 0) [L97] COND FALSE !(p2 != 0) [L101] COND FALSE !(p3 != 0) [L105] COND TRUE p4 != 0 [L106] lk4 = 1 [L109] COND TRUE p5 != 0 [L110] lk5 = 1 [L113] COND TRUE p6 != 0 [L114] lk6 = 1 [L117] COND TRUE p7 != 0 [L118] lk7 = 1 [L121] COND TRUE p8 != 0 [L122] lk8 = 1 [L125] COND TRUE p9 != 0 [L126] lk9 = 1 [L129] COND TRUE p10 != 0 [L130] lk10 = 1 [L133] COND FALSE !(p11 != 0) [L137] COND TRUE p12 != 0 [L138] lk12 = 1 [L141] COND TRUE p13 != 0 [L142] lk13 = 1 [L145] COND TRUE p14 != 0 [L146] lk14 = 1 [L149] COND TRUE p15 != 0 [L150] lk15 = 1 [L155] COND FALSE !(p1 != 0) [L160] COND FALSE !(p2 != 0) [L3] __assert_fail("0", "test_locks_15-1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 57 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.5s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 664 SDtfs, 332 SDslu, 303 SDs, 0 SdLazy, 21 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 186 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=135occurred in iteration=5, 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, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 186 ConstructedInterpolants, 0 QuantifiedInterpolants, 11418 SizeOfPredicates, 1 NumberOfNonLiveVariables, 329 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...