./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8 --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 ea76204732189107ea57f186f34feef6f7f76c1e ............................................................................................................................................. 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_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8 --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 ea76204732189107ea57f186f34feef6f7f76c1e ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:27:24,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:27:24,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:27:24,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:27:24,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:27:24,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:27:24,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:27:24,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:27:24,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:27:24,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:27:24,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:27:24,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:27:24,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:27:24,388 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:27:24,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:27:24,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:27:24,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:27:24,398 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:27:24,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:27:24,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:27:24,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:27:24,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:27:24,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:27:24,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:27:24,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:27:24,428 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:27:24,429 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:27:24,431 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:27:24,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:27:24,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:27:24,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:27:24,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:27:24,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:27:24,439 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:27:24,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:27:24,441 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:27:24,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:27:24,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:27:24,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:27:24,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:27:24,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:27:24,446 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-13 07:27:24,481 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:27:24,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:27:24,482 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:27:24,483 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:27:24,483 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:27:24,483 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:27:24,484 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:27:24,484 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:27:24,484 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:27:24,484 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:27:24,485 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:27:24,485 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:27:24,485 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:27:24,485 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:27:24,486 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:27:24,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 07:27:24,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 07:27:24,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:27:24,487 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:27:24,488 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:27:24,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:27:24,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:27:24,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:27:24,489 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 07:27:24,489 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 07:27:24,489 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 07:27:24,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:27:24,490 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:27:24,490 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:27:24,490 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:27:24,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:27:24,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:27:24,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:27:24,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:27:24,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:27:24,492 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:27:24,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:27:24,492 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:27:24,492 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:27:24,493 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_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea76204732189107ea57f186f34feef6f7f76c1e [2021-10-13 07:27:24,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:27:24,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:27:24,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:27:24,899 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:27:24,900 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:27:24,901 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test8.i [2021-10-13 07:27:24,980 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/data/d4189cf14/93de8de9efcb4a3f8daa015465cebae3/FLAG116ad2c0a [2021-10-13 07:27:25,619 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:27:25,620 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/sv-benchmarks/c/ldv-memsafety/memleaks_test8.i [2021-10-13 07:27:25,647 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/data/d4189cf14/93de8de9efcb4a3f8daa015465cebae3/FLAG116ad2c0a [2021-10-13 07:27:25,886 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/data/d4189cf14/93de8de9efcb4a3f8daa015465cebae3 [2021-10-13 07:27:25,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:27:25,890 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:27:25,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:27:25,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:27:25,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:27:25,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:27:25" (1/1) ... [2021-10-13 07:27:25,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61b3418e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:27:25, skipping insertion in model container [2021-10-13 07:27:25,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:27:25" (1/1) ... [2021-10-13 07:27:25,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:27:25,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:27:26,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:27:26,474 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-13 07:27:26,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@f7dc7d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:27:26, skipping insertion in model container [2021-10-13 07:27:26,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:27:26,476 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-13 07:27:26,480 INFO L168 Benchmark]: Toolchain (without parser) took 586.92 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 47.5 MB in the beginning and 79.5 MB in the end (delta: -32.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:27:26,481 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 86.0 MB. Free memory is still 65.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:27:26,483 INFO L168 Benchmark]: CACSL2BoogieTranslator took 584.18 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 47.3 MB in the beginning and 79.5 MB in the end (delta: -32.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:27:26,486 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 86.0 MB. Free memory is still 65.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 584.18 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 47.3 MB in the beginning and 79.5 MB in the end (delta: -32.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:27:28,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:27:28,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:27:28,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:27:28,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:27:28,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:27:28,850 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:27:28,852 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:27:28,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:27:28,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:27:28,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:27:28,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:27:28,860 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:27:28,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:27:28,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:27:28,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:27:28,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:27:28,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:27:28,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:27:28,872 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:27:28,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:27:28,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:27:28,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:27:28,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:27:28,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:27:28,884 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:27:28,884 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:27:28,885 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:27:28,886 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:27:28,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:27:28,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:27:28,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:27:28,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:27:28,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:27:28,896 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:27:28,896 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:27:28,897 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:27:28,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:27:28,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:27:28,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:27:28,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:27:28,905 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-13 07:27:28,946 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:27:28,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:27:28,948 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:27:28,948 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:27:28,948 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:27:28,949 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:27:28,949 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:27:28,949 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:27:28,949 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:27:28,951 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 07:27:28,951 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 07:27:28,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:27:28,951 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:27:28,951 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:27:28,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:27:28,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:27:28,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:27:28,952 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 07:27:28,952 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 07:27:28,952 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 07:27:28,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:27:28,952 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:27:28,953 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:27:28,953 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:27:28,953 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:27:28,953 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:27:28,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:27:28,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:27:28,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:27:28,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:27:28,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:27:28,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:27:28,955 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:27:28,955 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:27:28,955 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:27:28,956 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:27:28,956 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_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea76204732189107ea57f186f34feef6f7f76c1e [2021-10-13 07:27:29,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:27:29,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:27:29,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:27:29,434 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:27:29,435 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:27:29,436 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test8.i [2021-10-13 07:27:29,520 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/data/162f3f996/ac2383845e074670a9d87f19da37391f/FLAG49f03bf89 [2021-10-13 07:27:30,174 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:27:30,175 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/sv-benchmarks/c/ldv-memsafety/memleaks_test8.i [2021-10-13 07:27:30,197 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/data/162f3f996/ac2383845e074670a9d87f19da37391f/FLAG49f03bf89 [2021-10-13 07:27:30,430 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/data/162f3f996/ac2383845e074670a9d87f19da37391f [2021-10-13 07:27:30,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:27:30,433 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:27:30,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:27:30,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:27:30,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:27:30,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:27:30" (1/1) ... [2021-10-13 07:27:30,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2171469f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:27:30, skipping insertion in model container [2021-10-13 07:27:30,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:27:30" (1/1) ... [2021-10-13 07:27:30,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:27:30,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:27:31,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:27:31,110 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 07:27:31,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:27:31,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:27:31,230 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:27:31,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:27:31,343 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:27:31,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:27:31 WrapperNode [2021-10-13 07:27:31,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:27:31,345 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:27:31,346 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:27:31,346 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:27:31,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:27:31" (1/1) ... [2021-10-13 07:27:31,377 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:27:31" (1/1) ... [2021-10-13 07:27:31,396 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:27:31,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:27:31,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:27:31,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:27:31,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:27:31" (1/1) ... [2021-10-13 07:27:31,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:27:31" (1/1) ... [2021-10-13 07:27:31,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:27:31" (1/1) ... [2021-10-13 07:27:31,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:27:31" (1/1) ... [2021-10-13 07:27:31,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:27:31" (1/1) ... [2021-10-13 07:27:31,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:27:31" (1/1) ... [2021-10-13 07:27:31,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:27:31" (1/1) ... [2021-10-13 07:27:31,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:27:31,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:27:31,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:27:31,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:27:31,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:27:31" (1/1) ... [2021-10-13 07:27:31,458 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:27:31,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:27:31,487 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:27:31,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:27:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 07:27:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:27:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:27:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-13 07:27:31,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:27:31,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:27:31,866 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:27:31,867 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-13 07:27:31,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:27:31 BoogieIcfgContainer [2021-10-13 07:27:31,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:27:31,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:27:31,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:27:31,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:27:31,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:27:30" (1/3) ... [2021-10-13 07:27:31,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c29871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:27:31, skipping insertion in model container [2021-10-13 07:27:31,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:27:31" (2/3) ... [2021-10-13 07:27:31,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c29871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:27:31, skipping insertion in model container [2021-10-13 07:27:31,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:27:31" (3/3) ... [2021-10-13 07:27:31,882 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test8.i [2021-10-13 07:27:31,888 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:27:31,888 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-13 07:27:31,945 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:27:31,952 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, mConcurrency=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 [2021-10-13 07:27:31,953 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-13 07:27:31,968 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.5454545454545454) 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) [2021-10-13 07:27:31,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:27:31,974 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:27:31,974 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:27:31,975 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-13 07:27:31,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:27:31,981 INFO L82 PathProgramCache]: Analyzing trace with hash 889508744, now seen corresponding path program 1 times [2021-10-13 07:27:31,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:27:31,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675795430] [2021-10-13 07:27:31,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:27:31,994 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:27:31,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:27:31,998 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:27:32,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:27:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:27:32,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:27:32,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:27:32,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:27:32,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:27:32,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:27:32,184 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:27:32,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675795430] [2021-10-13 07:27:32,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1675795430] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:27:32,186 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:27:32,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:27:32,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677239925] [2021-10-13 07:27:32,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:27:32,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:27:32,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:27:32,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:27:32,225 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.5454545454545454) 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) Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-10-13 07:27:32,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:27:32,264 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-10-13 07:27:32,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:27:32,265 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2021-10-13 07:27:32,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:27:32,273 INFO L225 Difference]: With dead ends: 15 [2021-10-13 07:27:32,273 INFO L226 Difference]: Without dead ends: 13 [2021-10-13 07:27:32,275 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:27:32,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-13 07:27:32,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-13 07:27:32,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.4) 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) [2021-10-13 07:27:32,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-10-13 07:27:32,305 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 6 [2021-10-13 07:27:32,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:27:32,306 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-13 07:27:32,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-10-13 07:27:32,306 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-10-13 07:27:32,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:27:32,307 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:27:32,307 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:27:32,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:27:32,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:27:32,516 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-13 07:27:32,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:27:32,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1804975281, now seen corresponding path program 1 times [2021-10-13 07:27:32,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:27:32,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432331563] [2021-10-13 07:27:32,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:27:32,521 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:27:32,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:27:32,523 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:27:32,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:27:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:27:32,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:27:32,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:27:32,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:27:32,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:27:32,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:27:32,627 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:27:32,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [432331563] [2021-10-13 07:27:32,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [432331563] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:27:32,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:27:32,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 07:27:32,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513329897] [2021-10-13 07:27:32,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:27:32,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:27:32,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:27:32,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:27:32,632 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-10-13 07:27:32,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:27:32,691 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2021-10-13 07:27:32,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:27:32,692 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2021-10-13 07:27:32,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:27:32,693 INFO L225 Difference]: With dead ends: 23 [2021-10-13 07:27:32,693 INFO L226 Difference]: Without dead ends: 23 [2021-10-13 07:27:32,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:27:32,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-13 07:27:32,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 15. [2021-10-13 07:27:32,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.3333333333333333) 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) [2021-10-13 07:27:32,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-10-13 07:27:32,699 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 7 [2021-10-13 07:27:32,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:27:32,699 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-13 07:27:32,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-10-13 07:27:32,700 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-10-13 07:27:32,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:27:32,700 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:27:32,701 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:27:32,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:27:32,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:27:32,912 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-13 07:27:32,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:27:32,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1804967335, now seen corresponding path program 1 times [2021-10-13 07:27:32,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:27:32,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1824597292] [2021-10-13 07:27:32,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:27:32,922 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:27:32,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:27:32,927 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:27:32,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:27:32,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:27:32,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:27:32,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:27:33,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:27:33,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:27:33,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:27:33,181 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:27:33,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1824597292] [2021-10-13 07:27:33,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1824597292] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:27:33,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:27:33,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-13 07:27:33,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139091382] [2021-10-13 07:27:33,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:27:33,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:27:33,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:27:33,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:27:33,185 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 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) [2021-10-13 07:27:33,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:27:33,370 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-10-13 07:27:33,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:27:33,371 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 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) Word has length 7 [2021-10-13 07:27:33,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:27:33,372 INFO L225 Difference]: With dead ends: 21 [2021-10-13 07:27:33,372 INFO L226 Difference]: Without dead ends: 21 [2021-10-13 07:27:33,373 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.3ms TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2021-10-13 07:27:33,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-13 07:27:33,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 14. [2021-10-13 07:27:33,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 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) [2021-10-13 07:27:33,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-10-13 07:27:33,376 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 7 [2021-10-13 07:27:33,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:27:33,376 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-10-13 07:27:33,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 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) [2021-10-13 07:27:33,376 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-10-13 07:27:33,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:27:33,377 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:27:33,377 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:27:33,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:27:33,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:27:33,578 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-13 07:27:33,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:27:33,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1806822323, now seen corresponding path program 1 times [2021-10-13 07:27:33,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:27:33,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665984130] [2021-10-13 07:27:33,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:27:33,580 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:27:33,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:27:33,581 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:27:33,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:27:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:27:33,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:27:33,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:27:33,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:27:33,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:27:33,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:27:33,688 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:27:33,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665984130] [2021-10-13 07:27:33,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665984130] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:27:33,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:27:33,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:27:33,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208412953] [2021-10-13 07:27:33,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:27:33,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:27:33,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:27:33,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:27:33,692 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-10-13 07:27:33,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:27:33,709 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-10-13 07:27:33,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:27:33,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2021-10-13 07:27:33,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:27:33,710 INFO L225 Difference]: With dead ends: 20 [2021-10-13 07:27:33,710 INFO L226 Difference]: Without dead ends: 18 [2021-10-13 07:27:33,711 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:27:33,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-13 07:27:33,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 12. [2021-10-13 07:27:33,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.2) internal successors, (12), 11 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) [2021-10-13 07:27:33,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-13 07:27:33,714 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2021-10-13 07:27:33,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:27:33,714 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-13 07:27:33,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-10-13 07:27:33,715 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-13 07:27:33,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:27:33,715 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:27:33,716 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:27:33,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:27:33,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:27:33,921 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-13 07:27:33,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:27:33,922 INFO L82 PathProgramCache]: Analyzing trace with hash 119412586, now seen corresponding path program 1 times [2021-10-13 07:27:33,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:27:33,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880563454] [2021-10-13 07:27:33,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:27:33,923 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:27:33,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:27:33,924 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:27:33,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 07:27:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:27:33,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:27:33,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:27:34,052 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:27:34,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:27:34,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:27:34,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:27:34,173 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:27:34,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880563454] [2021-10-13 07:27:34,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [880563454] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:27:34,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:27:34,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:27:34,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754000064] [2021-10-13 07:27:34,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:27:34,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:27:34,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:27:34,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:27:34,177 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) 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) [2021-10-13 07:27:34,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:27:34,248 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-10-13 07:27:34,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:27:34,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) 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 [2021-10-13 07:27:34,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:27:34,251 INFO L225 Difference]: With dead ends: 17 [2021-10-13 07:27:34,251 INFO L226 Difference]: Without dead ends: 17 [2021-10-13 07:27:34,252 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:27:34,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-13 07:27:34,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-13 07:27:34,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 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) [2021-10-13 07:27:34,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-10-13 07:27:34,255 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 8 [2021-10-13 07:27:34,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:27:34,255 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-10-13 07:27:34,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) 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) [2021-10-13 07:27:34,256 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-10-13 07:27:34,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:27:34,256 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:27:34,257 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:27:34,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:27:34,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:27:34,458 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-13 07:27:34,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:27:34,458 INFO L82 PathProgramCache]: Analyzing trace with hash 176670888, now seen corresponding path program 1 times [2021-10-13 07:27:34,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:27:34,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852946220] [2021-10-13 07:27:34,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:27:34,459 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:27:34,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:27:34,461 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:27:34,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 07:27:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:27:34,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:27:34,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:27:34,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:27:34,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:27:34,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:27:34,607 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:27:34,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852946220] [2021-10-13 07:27:34,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852946220] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:27:34,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:27:34,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 07:27:34,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586255429] [2021-10-13 07:27:34,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:27:34,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:27:34,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:27:34,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:27:34,610 INFO L87 Difference]: Start difference. First operand 17 states and 17 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) [2021-10-13 07:27:34,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:27:34,640 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-10-13 07:27:34,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:27:34,645 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 [2021-10-13 07:27:34,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:27:34,646 INFO L225 Difference]: With dead ends: 13 [2021-10-13 07:27:34,646 INFO L226 Difference]: Without dead ends: 11 [2021-10-13 07:27:34,647 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:27:34,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-13 07:27:34,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-13 07:27:34,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.0) internal successors, (10), 10 states have internal predecessors, (10), 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) [2021-10-13 07:27:34,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2021-10-13 07:27:34,649 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 8 [2021-10-13 07:27:34,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:27:34,649 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2021-10-13 07:27:34,649 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) [2021-10-13 07:27:34,649 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2021-10-13 07:27:34,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:27:34,650 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:27:34,650 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:27:34,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-13 07:27:34,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:27:34,864 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-13 07:27:34,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:27:34,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1208620146, now seen corresponding path program 1 times [2021-10-13 07:27:34,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:27:34,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1574102047] [2021-10-13 07:27:34,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:27:34,865 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:27:34,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:27:34,866 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:27:34,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 07:27:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:27:34,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:27:34,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:27:35,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:27:35,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:27:40,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:27:40,069 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:27:40,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1574102047] [2021-10-13 07:27:40,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1574102047] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:27:40,070 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:27:40,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-13 07:27:40,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631480808] [2021-10-13 07:27:40,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 07:27:40,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:27:40,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 07:27:40,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=50, Unknown=2, NotChecked=0, Total=72 [2021-10-13 07:27:40,072 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 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) [2021-10-13 07:27:40,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:27:40,201 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2021-10-13 07:27:40,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:27:40,202 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 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) Word has length 10 [2021-10-13 07:27:40,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:27:40,202 INFO L225 Difference]: With dead ends: 10 [2021-10-13 07:27:40,202 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:27:40,203 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 4989.3ms TimeCoverageRelationStatistics Valid=40, Invalid=90, Unknown=2, NotChecked=0, Total=132 [2021-10-13 07:27:40,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:27:40,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:27:40,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-10-13 07:27:40,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:27:40,204 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-10-13 07:27:40,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:27:40,204 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:27:40,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 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) [2021-10-13 07:27:40,204 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:27:40,204 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:27:40,207 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:27:40,207 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:27:40,208 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:27:40,208 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 07:27:40,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 07:27:40,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:27:40,412 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:27:40,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:27:40 BoogieIcfgContainer [2021-10-13 07:27:40,416 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:27:40,419 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:27:40,419 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:27:40,425 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:27:40,426 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:27:31" (3/4) ... [2021-10-13 07:27:40,429 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:27:40,440 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 07:27:40,440 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-13 07:27:40,441 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:27:40,479 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:27:40,479 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:27:40,481 INFO L168 Benchmark]: Toolchain (without parser) took 10046.78 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 33.2 MB in the beginning and 35.1 MB in the end (delta: -1.8 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:27:40,481 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 56.6 MB. Free memory is still 37.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:27:40,481 INFO L168 Benchmark]: CACSL2BoogieTranslator took 903.71 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 33.1 MB in the beginning and 53.3 MB in the end (delta: -20.1 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:27:40,482 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.48 ms. Allocated memory is still 73.4 MB. Free memory was 53.3 MB in the beginning and 51.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:27:40,482 INFO L168 Benchmark]: Boogie Preprocessor took 51.47 ms. Allocated memory is still 73.4 MB. Free memory was 50.9 MB in the beginning and 49.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:27:40,483 INFO L168 Benchmark]: RCFGBuilder took 419.12 ms. Allocated memory is still 73.4 MB. Free memory was 49.8 MB in the beginning and 39.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:27:40,483 INFO L168 Benchmark]: TraceAbstraction took 8546.24 ms. Allocated memory is still 73.4 MB. Free memory was 39.3 MB in the beginning and 37.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 490.8 kB. Max. memory is 16.1 GB. [2021-10-13 07:27:40,483 INFO L168 Benchmark]: Witness Printer took 60.75 ms. Allocated memory is still 73.4 MB. Free memory was 37.7 MB in the beginning and 35.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:27:40,486 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 56.6 MB. Free memory is still 37.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 903.71 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 33.1 MB in the beginning and 53.3 MB in the end (delta: -20.1 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.48 ms. Allocated memory is still 73.4 MB. Free memory was 53.3 MB in the beginning and 51.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.47 ms. Allocated memory is still 73.4 MB. Free memory was 50.9 MB in the beginning and 49.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 419.12 ms. Allocated memory is still 73.4 MB. Free memory was 49.8 MB in the beginning and 39.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8546.24 ms. Allocated memory is still 73.4 MB. Free memory was 39.3 MB in the beginning and 37.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 490.8 kB. Max. memory is 16.1 GB. * Witness Printer took 60.75 ms. Allocated memory is still 73.4 MB. Free memory was 37.7 MB in the beginning and 35.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 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 - PositiveResult [Line: 762]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 762]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 762]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 769]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 8469.4ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 14.1ms, AutomataDifference: 600.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 69 SDtfs, 90 SDslu, 46 SDs, 0 SdLazy, 113 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 253.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 5201.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=5, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 31.4ms AutomataMinimizationTime, 7 MinimizatonAttempts, 21 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 48.0ms SsaConstructionTime, 110.5ms SatisfiabilityAnalysisTime, 5788.3ms InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 92 ConstructedInterpolants, 3 QuantifiedInterpolants, 413 SizeOfPredicates, 9 NumberOfNonLiveVariables, 235 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-13 07:27:40,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6406037-8520-4e2f-8294-6915bf4330d8/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...