./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/test-0158_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/test-0158_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE --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 7140a276a0ca1ba8339f047ca5220394bc3f48542635b8ad8e347c34fb7ba260 ................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/test-0158_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE --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 7140a276a0ca1ba8339f047ca5220394bc3f48542635b8ad8e347c34fb7ba260 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:13:01,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:13:01,481 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:13:01,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:13:01,535 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:13:01,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:13:01,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:13:01,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:13:01,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:13:01,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:13:01,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:13:01,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:13:01,572 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:13:01,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:13:01,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:13:01,578 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:13:01,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:13:01,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:13:01,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:13:01,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:13:01,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:13:01,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:13:01,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:13:01,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:13:01,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:13:01,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:13:01,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:13:01,604 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:13:01,605 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:13:01,606 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:13:01,607 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:13:01,608 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:13:01,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:13:01,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:13:01,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:13:01,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:13:01,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:13:01,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:13:01,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:13:01,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:13:01,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:13:01,620 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-24 10:13:01,689 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:13:01,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:13:01,697 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:13:01,698 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:13:01,698 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:13:01,699 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:13:01,699 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:13:01,699 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:13:01,700 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:13:01,700 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:13:01,702 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:13:01,702 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:13:01,703 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:13:01,703 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:13:01,703 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:13:01,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-24 10:13:01,705 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-24 10:13:01,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:13:01,706 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:13:01,706 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 10:13:01,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:13:01,707 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:13:01,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:13:01,707 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-24 10:13:01,708 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-24 10:13:01,708 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-24 10:13:01,711 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:13:01,712 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:13:01,712 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:13:01,712 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:13:01,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:13:01,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:13:01,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:13:01,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:13:01,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:13:01,715 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:13:01,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:13:01,716 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:13:01,716 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:13:01,717 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_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7140a276a0ca1ba8339f047ca5220394bc3f48542635b8ad8e347c34fb7ba260 [2021-10-24 10:13:02,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:13:02,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:13:02,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:13:02,204 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:13:02,205 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:13:02,206 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/list-ext-properties/test-0158_1-2.i [2021-10-24 10:13:02,320 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/data/ca0762379/f356f54beaa34a0297a8f8ae7a3317c4/FLAGc0a6f9b09 [2021-10-24 10:13:03,055 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:13:03,055 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/sv-benchmarks/c/list-ext-properties/test-0158_1-2.i [2021-10-24 10:13:03,073 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/data/ca0762379/f356f54beaa34a0297a8f8ae7a3317c4/FLAGc0a6f9b09 [2021-10-24 10:13:03,351 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/data/ca0762379/f356f54beaa34a0297a8f8ae7a3317c4 [2021-10-24 10:13:03,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:13:03,360 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:13:03,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:13:03,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:13:03,368 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:13:03,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:13:03" (1/1) ... [2021-10-24 10:13:03,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79c6987b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:03, skipping insertion in model container [2021-10-24 10:13:03,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:13:03" (1/1) ... [2021-10-24 10:13:03,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:13:03,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:13:03,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:13:03,860 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:13:03,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:13:03,960 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:13:03,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:03 WrapperNode [2021-10-24 10:13:03,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:13:03,964 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:13:03,964 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:13:03,965 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:13:03,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:03" (1/1) ... [2021-10-24 10:13:04,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:03" (1/1) ... [2021-10-24 10:13:04,031 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:13:04,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:13:04,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:13:04,033 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:13:04,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:03" (1/1) ... [2021-10-24 10:13:04,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:03" (1/1) ... [2021-10-24 10:13:04,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:03" (1/1) ... [2021-10-24 10:13:04,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:03" (1/1) ... [2021-10-24 10:13:04,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:03" (1/1) ... [2021-10-24 10:13:04,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:03" (1/1) ... [2021-10-24 10:13:04,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:03" (1/1) ... [2021-10-24 10:13:04,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:13:04,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:13:04,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:13:04,067 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:13:04,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:03" (1/1) ... [2021-10-24 10:13:04,079 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:13:04,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:13:04,139 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:13:04,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:13:04,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-24 10:13:04,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-24 10:13:04,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-24 10:13:04,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-24 10:13:04,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:13:04,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 10:13:04,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:13:04,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:13:04,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:13:04,824 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:13:04,824 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-24 10:13:04,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:13:04 BoogieIcfgContainer [2021-10-24 10:13:04,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:13:04,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:13:04,831 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:13:04,839 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:13:04,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:13:03" (1/3) ... [2021-10-24 10:13:04,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24bae26e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:13:04, skipping insertion in model container [2021-10-24 10:13:04,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:03" (2/3) ... [2021-10-24 10:13:04,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24bae26e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:13:04, skipping insertion in model container [2021-10-24 10:13:04,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:13:04" (3/3) ... [2021-10-24 10:13:04,847 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158_1-2.i [2021-10-24 10:13:04,857 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:13:04,858 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-10-24 10:13:04,949 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:13:04,964 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 10:13:04,965 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-10-24 10:13:04,990 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 10 states have (on average 2.3) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:04,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-24 10:13:05,000 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:13:05,001 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-24 10:13:05,001 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-10-24 10:13:05,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:13:05,012 INFO L82 PathProgramCache]: Analyzing trace with hash 2112, now seen corresponding path program 1 times [2021-10-24 10:13:05,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:13:05,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43780908] [2021-10-24 10:13:05,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:13:05,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:13:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:13:05,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:13:05,408 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:13:05,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43780908] [2021-10-24 10:13:05,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43780908] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:13:05,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:13:05,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-24 10:13:05,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434322153] [2021-10-24 10:13:05,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:13:05,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:13:05,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:13:05,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:13:05,461 INFO L87 Difference]: Start difference. First operand has 22 states, 10 states have (on average 2.3) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:05,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:13:05,575 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-10-24 10:13:05,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:13:05,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-24 10:13:05,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:13:05,595 INFO L225 Difference]: With dead ends: 17 [2021-10-24 10:13:05,595 INFO L226 Difference]: Without dead ends: 16 [2021-10-24 10:13:05,599 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:13:05,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-24 10:13:05,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-24 10:13:05,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.7) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:05,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-10-24 10:13:05,647 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 2 [2021-10-24 10:13:05,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:13:05,648 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-10-24 10:13:05,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:05,649 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-10-24 10:13:05,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-24 10:13:05,650 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:13:05,650 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-24 10:13:05,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:13:05,651 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-10-24 10:13:05,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:13:05,656 INFO L82 PathProgramCache]: Analyzing trace with hash 2113, now seen corresponding path program 1 times [2021-10-24 10:13:05,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:13:05,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901422554] [2021-10-24 10:13:05,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:13:05,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:13:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:13:05,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:13:05,784 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:13:05,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901422554] [2021-10-24 10:13:05,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901422554] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:13:05,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:13:05,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-24 10:13:05,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190858867] [2021-10-24 10:13:05,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:13:05,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:13:05,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:13:05,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:13:05,789 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:05,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:13:05,818 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2021-10-24 10:13:05,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:13:05,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-24 10:13:05,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:13:05,820 INFO L225 Difference]: With dead ends: 11 [2021-10-24 10:13:05,820 INFO L226 Difference]: Without dead ends: 11 [2021-10-24 10:13:05,822 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:13:05,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-24 10:13:05,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-24 10:13:05,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:05,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-10-24 10:13:05,825 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 2 [2021-10-24 10:13:05,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:13:05,826 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-10-24 10:13:05,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:05,827 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2021-10-24 10:13:05,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 10:13:05,827 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:13:05,828 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:13:05,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 10:13:05,829 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-10-24 10:13:05,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:13:05,830 INFO L82 PathProgramCache]: Analyzing trace with hash 404872397, now seen corresponding path program 1 times [2021-10-24 10:13:05,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:13:05,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525743679] [2021-10-24 10:13:05,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:13:05,831 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:13:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:13:05,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:13:05,940 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:13:05,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525743679] [2021-10-24 10:13:05,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525743679] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:13:05,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:13:05,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 10:13:05,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337918162] [2021-10-24 10:13:05,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:13:05,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:13:05,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:13:05,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:13:05,944 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:06,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:13:06,032 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-10-24 10:13:06,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:13:06,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-24 10:13:06,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:13:06,047 INFO L225 Difference]: With dead ends: 15 [2021-10-24 10:13:06,047 INFO L226 Difference]: Without dead ends: 15 [2021-10-24 10:13:06,048 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:13:06,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-24 10:13:06,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2021-10-24 10:13:06,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:06,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-10-24 10:13:06,052 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 8 [2021-10-24 10:13:06,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:13:06,053 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-24 10:13:06,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:06,054 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-10-24 10:13:06,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 10:13:06,055 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:13:06,055 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:13:06,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-24 10:13:06,056 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-10-24 10:13:06,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:13:06,056 INFO L82 PathProgramCache]: Analyzing trace with hash 552635757, now seen corresponding path program 1 times [2021-10-24 10:13:06,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:13:06,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588465639] [2021-10-24 10:13:06,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:13:06,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:13:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:13:06,094 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:13:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:13:06,148 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 10:13:06,149 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:13:06,150 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK [2021-10-24 10:13:06,153 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-24 10:13:06,153 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-24 10:13:06,154 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-24 10:13:06,154 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-24 10:13:06,154 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-24 10:13:06,155 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-24 10:13:06,155 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-24 10:13:06,155 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-24 10:13:06,156 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-24 10:13:06,156 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-24 10:13:06,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-24 10:13:06,165 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:13:06,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:13:06 BoogieIcfgContainer [2021-10-24 10:13:06,191 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:13:06,193 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:13:06,193 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:13:06,195 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:13:06,196 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:13:04" (3/4) ... [2021-10-24 10:13:06,201 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 10:13:06,201 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:13:06,209 INFO L168 Benchmark]: Toolchain (without parser) took 2844.36 ms. Allocated memory was 92.3 MB in the beginning and 117.4 MB in the end (delta: 25.2 MB). Free memory was 50.3 MB in the beginning and 83.3 MB in the end (delta: -33.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:13:06,210 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 92.3 MB. Free memory is still 67.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:13:06,212 INFO L168 Benchmark]: CACSL2BoogieTranslator took 599.25 ms. Allocated memory is still 92.3 MB. Free memory was 50.1 MB in the beginning and 65.4 MB in the end (delta: -15.2 MB). Peak memory consumption was 15.3 MB. Max. memory is 16.1 GB. [2021-10-24 10:13:06,213 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.63 ms. Allocated memory is still 92.3 MB. Free memory was 65.4 MB in the beginning and 63.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:13:06,214 INFO L168 Benchmark]: Boogie Preprocessor took 32.50 ms. Allocated memory is still 92.3 MB. Free memory was 63.5 MB in the beginning and 62.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:13:06,219 INFO L168 Benchmark]: RCFGBuilder took 762.30 ms. Allocated memory is still 92.3 MB. Free memory was 62.1 MB in the beginning and 60.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:13:06,220 INFO L168 Benchmark]: TraceAbstraction took 1360.42 ms. Allocated memory was 92.3 MB in the beginning and 117.4 MB in the end (delta: 25.2 MB). Free memory was 60.4 MB in the beginning and 83.9 MB in the end (delta: -23.4 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:13:06,226 INFO L168 Benchmark]: Witness Printer took 10.99 ms. Allocated memory is still 117.4 MB. Free memory was 83.9 MB in the beginning and 83.3 MB in the end (delta: 544.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:13:06,233 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 92.3 MB. Free memory is still 67.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 599.25 ms. Allocated memory is still 92.3 MB. Free memory was 50.1 MB in the beginning and 65.4 MB in the end (delta: -15.2 MB). Peak memory consumption was 15.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 67.63 ms. Allocated memory is still 92.3 MB. Free memory was 65.4 MB in the beginning and 63.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.50 ms. Allocated memory is still 92.3 MB. Free memory was 63.5 MB in the beginning and 62.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 762.30 ms. Allocated memory is still 92.3 MB. Free memory was 62.1 MB in the beginning and 60.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1360.42 ms. Allocated memory was 92.3 MB in the beginning and 117.4 MB in the end (delta: 25.2 MB). Free memory was 60.4 MB in the beginning and 83.9 MB in the end (delta: -23.4 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. * Witness Printer took 10.99 ms. Allocated memory is still 117.4 MB. Free memory was 83.9 MB in the beginning and 83.3 MB in the end (delta: 544.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 524]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 524. Possible FailurePath: [L526-L533] union { void *p0; struct { char c[2]; int p1; int p2; } str; } data; [L534] data.p0 = malloc(37U) [L535] COND FALSE !(__VERIFIER_nondet_int()) [L538] data.str.p2 = 30 [L540] EXPR data.str.p2 [L540] COND FALSE !(25 > data.str.p2) [L543] return 0; [L543] return 0; - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 1218.9ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 20.1ms, AutomataDifference: 302.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 16.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 22 SDtfs, 24 SDslu, 13 SDs, 0 SdLazy, 38 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 150.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 33.0ms AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 27.9ms SsaConstructionTime, 142.4ms SatisfiabilityAnalysisTime, 306.7ms InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 31 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-24 10:13:06,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:13:09,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:13:09,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:13:09,262 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:13:09,263 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:13:09,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:13:09,272 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:13:09,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:13:09,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:13:09,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:13:09,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:13:09,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:13:09,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:13:09,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:13:09,298 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:13:09,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:13:09,312 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:13:09,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:13:09,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:13:09,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:13:09,327 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:13:09,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:13:09,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:13:09,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:13:09,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:13:09,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:13:09,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:13:09,339 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:13:09,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:13:09,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:13:09,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:13:09,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:13:09,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:13:09,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:13:09,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:13:09,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:13:09,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:13:09,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:13:09,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:13:09,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:13:09,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:13:09,353 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-24 10:13:09,417 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:13:09,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:13:09,419 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:13:09,419 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:13:09,419 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:13:09,419 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:13:09,420 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:13:09,420 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:13:09,420 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:13:09,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-24 10:13:09,421 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-24 10:13:09,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:13:09,422 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:13:09,422 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 10:13:09,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:13:09,423 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:13:09,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:13:09,423 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-24 10:13:09,423 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-24 10:13:09,423 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-24 10:13:09,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:13:09,424 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:13:09,424 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 10:13:09,424 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 10:13:09,425 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:13:09,425 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:13:09,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:13:09,430 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 10:13:09,431 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:13:09,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:13:09,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:13:09,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:13:09,432 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 10:13:09,432 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 10:13:09,432 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:13:09,433 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:13:09,434 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_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7140a276a0ca1ba8339f047ca5220394bc3f48542635b8ad8e347c34fb7ba260 [2021-10-24 10:13:09,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:13:09,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:13:09,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:13:10,001 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:13:10,002 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:13:10,003 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/list-ext-properties/test-0158_1-2.i [2021-10-24 10:13:10,107 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/data/82f7a7380/d65ef3ecbcbc41d0bcc66c47268dabfe/FLAGe6110bbb0 [2021-10-24 10:13:10,941 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:13:10,942 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/sv-benchmarks/c/list-ext-properties/test-0158_1-2.i [2021-10-24 10:13:10,966 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/data/82f7a7380/d65ef3ecbcbc41d0bcc66c47268dabfe/FLAGe6110bbb0 [2021-10-24 10:13:11,153 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/data/82f7a7380/d65ef3ecbcbc41d0bcc66c47268dabfe [2021-10-24 10:13:11,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:13:11,161 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:13:11,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:13:11,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:13:11,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:13:11,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:13:11" (1/1) ... [2021-10-24 10:13:11,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fa75cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:11, skipping insertion in model container [2021-10-24 10:13:11,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:13:11" (1/1) ... [2021-10-24 10:13:11,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:13:11,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:13:11,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:13:11,780 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:13:11,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:13:11,907 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:13:11,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:11 WrapperNode [2021-10-24 10:13:11,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:13:11,910 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:13:11,911 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:13:11,911 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:13:11,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:11" (1/1) ... [2021-10-24 10:13:11,960 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:11" (1/1) ... [2021-10-24 10:13:11,992 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:13:11,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:13:11,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:13:11,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:13:12,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:11" (1/1) ... [2021-10-24 10:13:12,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:11" (1/1) ... [2021-10-24 10:13:12,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:11" (1/1) ... [2021-10-24 10:13:12,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:11" (1/1) ... [2021-10-24 10:13:12,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:11" (1/1) ... [2021-10-24 10:13:12,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:11" (1/1) ... [2021-10-24 10:13:12,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:11" (1/1) ... [2021-10-24 10:13:12,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:13:12,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:13:12,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:13:12,063 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:13:12,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:11" (1/1) ... [2021-10-24 10:13:12,073 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:13:12,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:13:12,110 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:13:12,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:13:12,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-24 10:13:12,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-24 10:13:12,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-24 10:13:12,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:13:12,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-24 10:13:12,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 10:13:12,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-24 10:13:12,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 10:13:12,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:13:12,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:13:12,701 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:13:12,701 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-24 10:13:12,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:13:12 BoogieIcfgContainer [2021-10-24 10:13:12,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:13:12,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:13:12,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:13:12,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:13:12,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:13:11" (1/3) ... [2021-10-24 10:13:12,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c4700c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:13:12, skipping insertion in model container [2021-10-24 10:13:12,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:11" (2/3) ... [2021-10-24 10:13:12,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c4700c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:13:12, skipping insertion in model container [2021-10-24 10:13:12,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:13:12" (3/3) ... [2021-10-24 10:13:12,718 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158_1-2.i [2021-10-24 10:13:12,727 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:13:12,727 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-10-24 10:13:12,806 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:13:12,820 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 10:13:12,821 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-10-24 10:13:12,843 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 13 states have (on average 2.0) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:12,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-24 10:13:12,863 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:13:12,864 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-24 10:13:12,865 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-10-24 10:13:12,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:13:12,873 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-10-24 10:13:12,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:13:12,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [978356674] [2021-10-24 10:13:12,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:13:12,891 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:13:12,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:13:12,896 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:13:12,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 10:13:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:13:13,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 10:13:13,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:13:13,148 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-24 10:13:13,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-10-24 10:13:13,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:13:13,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:13:13,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:13:13,290 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:13:13,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [978356674] [2021-10-24 10:13:13,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [978356674] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:13:13,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:13:13,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 10:13:13,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694861142] [2021-10-24 10:13:13,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:13:13,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:13:13,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:13:13,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:13:13,339 INFO L87 Difference]: Start difference. First operand has 25 states, 13 states have (on average 2.0) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:13,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:13:13,464 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-10-24 10:13:13,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:13:13,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-24 10:13:13,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:13:13,480 INFO L225 Difference]: With dead ends: 20 [2021-10-24 10:13:13,480 INFO L226 Difference]: Without dead ends: 18 [2021-10-24 10:13:13,482 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:13:13,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-24 10:13:13,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-24 10:13:13,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:13,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-10-24 10:13:13,526 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 3 [2021-10-24 10:13:13,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:13:13,527 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-10-24 10:13:13,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:13,528 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-10-24 10:13:13,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-24 10:13:13,528 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:13:13,529 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-24 10:13:13,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-24 10:13:13,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:13:13,744 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-10-24 10:13:13,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:13:13,745 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-10-24 10:13:13,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:13:13,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974768239] [2021-10-24 10:13:13,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:13:13,746 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:13:13,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:13:13,747 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:13:13,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 10:13:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:13:13,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 10:13:13,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:13:13,929 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-24 10:13:13,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 22 [2021-10-24 10:13:13,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2021-10-24 10:13:14,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:13:14,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:13:14,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:13:14,160 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:13:14,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974768239] [2021-10-24 10:13:14,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974768239] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:13:14,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:13:14,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-24 10:13:14,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104714171] [2021-10-24 10:13:14,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:13:14,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:13:14,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:13:14,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:13:14,165 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:14,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:13:14,253 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2021-10-24 10:13:14,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:13:14,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-24 10:13:14,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:13:14,256 INFO L225 Difference]: With dead ends: 13 [2021-10-24 10:13:14,256 INFO L226 Difference]: Without dead ends: 13 [2021-10-24 10:13:14,257 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:13:14,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-24 10:13:14,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-24 10:13:14,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:14,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-10-24 10:13:14,261 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 3 [2021-10-24 10:13:14,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:13:14,261 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-24 10:13:14,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:14,262 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-10-24 10:13:14,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 10:13:14,263 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:13:14,263 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:13:14,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 10:13:14,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:13:14,476 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-10-24 10:13:14,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:13:14,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1114117971, now seen corresponding path program 1 times [2021-10-24 10:13:14,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:13:14,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741325592] [2021-10-24 10:13:14,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:13:14,479 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:13:14,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:13:14,481 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:13:14,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 10:13:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:13:14,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 10:13:14,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:13:14,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-24 10:13:14,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-10-24 10:13:14,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:13:14,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:13:14,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:13:14,809 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:13:14,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741325592] [2021-10-24 10:13:14,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741325592] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:13:14,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:13:14,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-24 10:13:14,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384846767] [2021-10-24 10:13:14,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 10:13:14,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:13:14,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 10:13:14,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:13:14,813 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:15,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:13:15,008 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-10-24 10:13:15,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:13:15,011 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-24 10:13:15,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:13:15,012 INFO L225 Difference]: With dead ends: 17 [2021-10-24 10:13:15,012 INFO L226 Difference]: Without dead ends: 17 [2021-10-24 10:13:15,012 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 56.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:13:15,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-24 10:13:15,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2021-10-24 10:13:15,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:15,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-10-24 10:13:15,017 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2021-10-24 10:13:15,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:13:15,018 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-24 10:13:15,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:15,019 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-10-24 10:13:15,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 10:13:15,023 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:13:15,024 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:13:15,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 10:13:15,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:13:15,232 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-10-24 10:13:15,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:13:15,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1261881331, now seen corresponding path program 1 times [2021-10-24 10:13:15,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:13:15,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785650194] [2021-10-24 10:13:15,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:13:15,234 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:13:15,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:13:15,239 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:13:15,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-24 10:13:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:13:15,352 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:13:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:13:15,431 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-24 10:13:15,431 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:13:15,433 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK [2021-10-24 10:13:15,435 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-24 10:13:15,436 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-24 10:13:15,436 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-24 10:13:15,437 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-24 10:13:15,437 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-24 10:13:15,437 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-24 10:13:15,438 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-24 10:13:15,438 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-24 10:13:15,438 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-24 10:13:15,439 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-24 10:13:15,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-24 10:13:15,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:13:15,657 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:13:15,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:13:15 BoogieIcfgContainer [2021-10-24 10:13:15,683 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:13:15,684 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:13:15,684 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:13:15,685 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:13:15,685 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:13:12" (3/4) ... [2021-10-24 10:13:15,689 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 10:13:15,689 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:13:15,691 INFO L168 Benchmark]: Toolchain (without parser) took 4529.34 ms. Allocated memory was 71.3 MB in the beginning and 96.5 MB in the end (delta: 25.2 MB). Free memory was 55.3 MB in the beginning and 49.0 MB in the end (delta: 6.4 MB). Peak memory consumption was 32.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:13:15,692 INFO L168 Benchmark]: CDTParser took 0.79 ms. Allocated memory is still 71.3 MB. Free memory was 53.9 MB in the beginning and 53.9 MB in the end (delta: 59.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:13:15,692 INFO L168 Benchmark]: CACSL2BoogieTranslator took 746.85 ms. Allocated memory is still 71.3 MB. Free memory was 55.0 MB in the beginning and 49.0 MB in the end (delta: 6.0 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:13:15,693 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.01 ms. Allocated memory is still 71.3 MB. Free memory was 48.8 MB in the beginning and 47.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:13:15,694 INFO L168 Benchmark]: Boogie Preprocessor took 68.37 ms. Allocated memory is still 71.3 MB. Free memory was 47.1 MB in the beginning and 45.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:13:15,695 INFO L168 Benchmark]: RCFGBuilder took 642.15 ms. Allocated memory is still 71.3 MB. Free memory was 45.7 MB in the beginning and 34.0 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:13:15,696 INFO L168 Benchmark]: TraceAbstraction took 2977.45 ms. Allocated memory was 71.3 MB in the beginning and 96.5 MB in the end (delta: 25.2 MB). Free memory was 33.5 MB in the beginning and 49.5 MB in the end (delta: -16.0 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. [2021-10-24 10:13:15,697 INFO L168 Benchmark]: Witness Printer took 5.12 ms. Allocated memory is still 96.5 MB. Free memory was 49.5 MB in the beginning and 49.0 MB in the end (delta: 554.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:13:15,702 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.79 ms. Allocated memory is still 71.3 MB. Free memory was 53.9 MB in the beginning and 53.9 MB in the end (delta: 59.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 746.85 ms. Allocated memory is still 71.3 MB. Free memory was 55.0 MB in the beginning and 49.0 MB in the end (delta: 6.0 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.01 ms. Allocated memory is still 71.3 MB. Free memory was 48.8 MB in the beginning and 47.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.37 ms. Allocated memory is still 71.3 MB. Free memory was 47.1 MB in the beginning and 45.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 642.15 ms. Allocated memory is still 71.3 MB. Free memory was 45.7 MB in the beginning and 34.0 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2977.45 ms. Allocated memory was 71.3 MB in the beginning and 96.5 MB in the end (delta: 25.2 MB). Free memory was 33.5 MB in the beginning and 49.5 MB in the end (delta: -16.0 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. * Witness Printer took 5.12 ms. Allocated memory is still 96.5 MB. Free memory was 49.5 MB in the beginning and 49.0 MB in the end (delta: 554.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 524]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 524. Possible FailurePath: [L526-L533] union { void *p0; struct { char c[2]; int p1; int p2; } str; } data; [L534] data.p0 = malloc(37U) [L535] COND FALSE !(__VERIFIER_nondet_int()) [L538] data.str.p2 = 30 [L540] EXPR data.str.p2 [L540] COND FALSE !(25 > data.str.p2) [L543] return 0; [L543] return 0; - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 2850.8ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 31.6ms, AutomataDifference: 461.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 16.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 29 SDtfs, 36 SDslu, 32 SDs, 0 SdLazy, 55 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 290.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 138.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 30.8ms AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 43.3ms SsaConstructionTime, 126.5ms SatisfiabilityAnalysisTime, 845.6ms InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 26 ConstructedInterpolants, 1 QuantifiedInterpolants, 86 SizeOfPredicates, 8 NumberOfNonLiveVariables, 114 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 [2021-10-24 10:13:15,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451ce0f9-85cb-4489-a085-32104ad6f03a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...