./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-memsafety/fillarray.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_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/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_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-memsafety/fillarray.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/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_22d86986-51ec-45b0-94e7-ae698d41cb2a/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 317acdded5b2f05710e753bf8fd3c2308f1aec62 ............................................................................................................................................. 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_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/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_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-memsafety/fillarray.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/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_22d86986-51ec-45b0-94e7-ae698d41cb2a/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 317acdded5b2f05710e753bf8fd3c2308f1aec62 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:20:20,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:20:20,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:20:20,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:20:20,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:20:20,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:20:20,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:20:20,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:20:20,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:20:20,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:20:20,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:20:20,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:20:20,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:20:20,465 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:20:20,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:20:20,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:20:20,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:20:20,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:20:20,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:20:20,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:20:20,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:20:20,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:20:20,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:20:20,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:20:20,486 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:20:20,486 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:20:20,486 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:20:20,488 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:20:20,488 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:20:20,490 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:20:20,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:20:20,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:20:20,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:20:20,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:20:20,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:20:20,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:20:20,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:20:20,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:20:20,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:20:20,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:20:20,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:20:20,500 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-13 07:20:20,541 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:20:20,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:20:20,543 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:20:20,550 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:20:20,550 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:20:20,550 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:20:20,550 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:20:20,550 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:20:20,551 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:20:20,551 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:20:20,551 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:20:20,551 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:20:20,551 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:20:20,552 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:20:20,552 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:20:20,552 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 07:20:20,553 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 07:20:20,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:20:20,553 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:20:20,553 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:20:20,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:20:20,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:20:20,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:20:20,554 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 07:20:20,554 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 07:20:20,554 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 07:20:20,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:20:20,555 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:20:20,555 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:20:20,555 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:20:20,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:20:20,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:20:20,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:20:20,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:20:20,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:20:20,556 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:20:20,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:20:20,557 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:20:20,557 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:20:20,557 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_22d86986-51ec-45b0-94e7-ae698d41cb2a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 317acdded5b2f05710e753bf8fd3c2308f1aec62 [2021-10-13 07:20:20,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:20:20,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:20:20,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:20:20,876 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:20:20,877 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:20:20,878 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/pthread-memsafety/fillarray.i [2021-10-13 07:20:20,950 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/data/97cd70f5a/426a9efbae304d2d906064b9dce9258e/FLAG3792acb89 [2021-10-13 07:20:21,644 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:20:21,644 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/sv-benchmarks/c/pthread-memsafety/fillarray.i [2021-10-13 07:20:21,661 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/data/97cd70f5a/426a9efbae304d2d906064b9dce9258e/FLAG3792acb89 [2021-10-13 07:20:21,890 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/data/97cd70f5a/426a9efbae304d2d906064b9dce9258e [2021-10-13 07:20:21,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:20:21,894 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:20:21,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:20:21,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:20:21,912 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:20:21,913 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:20:21" (1/1) ... [2021-10-13 07:20:21,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fa07b50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:21, skipping insertion in model container [2021-10-13 07:20:21,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:20:21" (1/1) ... [2021-10-13 07:20:21,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:20:21,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:20:22,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:20:22,543 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 07:20:22,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@fd5ec4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:22, skipping insertion in model container [2021-10-13 07:20:22,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:20:22,545 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-13 07:20:22,548 INFO L168 Benchmark]: Toolchain (without parser) took 652.28 ms. Allocated memory is still 109.1 MB. Free memory was 66.4 MB in the beginning and 80.5 MB in the end (delta: -14.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:20:22,549 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 109.1 MB. Free memory was 84.7 MB in the beginning and 84.6 MB in the end (delta: 62.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:20:22,551 INFO L168 Benchmark]: CACSL2BoogieTranslator took 636.33 ms. Allocated memory is still 109.1 MB. Free memory was 66.2 MB in the beginning and 80.5 MB in the end (delta: -14.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:20:22,553 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 109.1 MB. Free memory was 84.7 MB in the beginning and 84.6 MB in the end (delta: 62.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 636.33 ms. Allocated memory is still 109.1 MB. Free memory was 66.2 MB in the beginning and 80.5 MB in the end (delta: -14.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1041]: 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 07:20:24,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:20:24,948 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:20:24,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:20:24,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:20:24,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:20:24,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:20:24,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:20:24,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:20:24,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:20:24,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:20:24,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:20:24,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:20:24,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:20:24,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:20:24,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:20:25,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:20:25,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:20:25,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:20:25,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:20:25,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:20:25,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:20:25,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:20:25,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:20:25,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:20:25,017 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:20:25,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:20:25,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:20:25,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:20:25,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:20:25,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:20:25,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:20:25,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:20:25,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:20:25,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:20:25,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:20:25,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:20:25,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:20:25,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:20:25,029 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:20:25,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:20:25,030 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-13 07:20:25,069 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:20:25,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:20:25,073 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:20:25,074 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:20:25,075 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:20:25,075 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:20:25,075 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:20:25,075 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:20:25,076 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:20:25,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 07:20:25,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 07:20:25,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:20:25,079 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:20:25,079 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:20:25,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:20:25,080 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:20:25,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:20:25,080 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 07:20:25,080 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 07:20:25,081 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 07:20:25,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:20:25,081 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:20:25,081 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:20:25,082 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:20:25,082 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:20:25,082 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:20:25,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:20:25,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:20:25,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:20:25,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:20:25,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:20:25,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:20:25,084 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:20:25,084 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:20:25,085 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:20:25,085 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:20:25,085 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_22d86986-51ec-45b0-94e7-ae698d41cb2a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 317acdded5b2f05710e753bf8fd3c2308f1aec62 [2021-10-13 07:20:25,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:20:25,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:20:25,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:20:25,579 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:20:25,580 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:20:25,581 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/pthread-memsafety/fillarray.i [2021-10-13 07:20:25,663 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/data/7a4c509a6/18b9f79a2e394019a8989edcede2a8ad/FLAG2f305e33d [2021-10-13 07:20:26,451 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:20:26,451 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/sv-benchmarks/c/pthread-memsafety/fillarray.i [2021-10-13 07:20:26,481 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/data/7a4c509a6/18b9f79a2e394019a8989edcede2a8ad/FLAG2f305e33d [2021-10-13 07:20:26,654 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/data/7a4c509a6/18b9f79a2e394019a8989edcede2a8ad [2021-10-13 07:20:26,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:20:26,660 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:20:26,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:20:26,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:20:26,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:20:26,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:20:26" (1/1) ... [2021-10-13 07:20:26,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f96e419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:26, skipping insertion in model container [2021-10-13 07:20:26,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:20:26" (1/1) ... [2021-10-13 07:20:26,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:20:26,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:20:27,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:20:27,352 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 07:20:27,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:20:27,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:20:27,406 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:20:27,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:20:27,564 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:20:27,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:27 WrapperNode [2021-10-13 07:20:27,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:20:27,566 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:20:27,566 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:20:27,566 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:20:27,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:27" (1/1) ... [2021-10-13 07:20:27,610 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:27" (1/1) ... [2021-10-13 07:20:27,633 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:20:27,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:20:27,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:20:27,634 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:20:27,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:27" (1/1) ... [2021-10-13 07:20:27,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:27" (1/1) ... [2021-10-13 07:20:27,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:27" (1/1) ... [2021-10-13 07:20:27,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:27" (1/1) ... [2021-10-13 07:20:27,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:27" (1/1) ... [2021-10-13 07:20:27,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:27" (1/1) ... [2021-10-13 07:20:27,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:27" (1/1) ... [2021-10-13 07:20:27,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:20:27,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:20:27,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:20:27,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:20:27,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:27" (1/1) ... [2021-10-13 07:20:27,719 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:20:27,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:20:27,762 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:20:27,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:20:27,809 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-10-13 07:20:27,809 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-10-13 07:20:27,810 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-10-13 07:20:27,810 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-10-13 07:20:27,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:20:27,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:20:27,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 07:20:27,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 07:20:27,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:20:27,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:20:27,815 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 07:20:28,389 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:20:28,389 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-13 07:20:28,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:20:28 BoogieIcfgContainer [2021-10-13 07:20:28,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:20:28,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:20:28,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:20:28,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:20:28,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:20:26" (1/3) ... [2021-10-13 07:20:28,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23b29014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:20:28, skipping insertion in model container [2021-10-13 07:20:28,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:27" (2/3) ... [2021-10-13 07:20:28,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23b29014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:20:28, skipping insertion in model container [2021-10-13 07:20:28,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:20:28" (3/3) ... [2021-10-13 07:20:28,400 INFO L111 eAbstractionObserver]: Analyzing ICFG fillarray.i [2021-10-13 07:20:28,405 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:20:28,406 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-10-13 07:20:28,406 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 07:20:28,444 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,444 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,444 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,445 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,445 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,445 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,445 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,446 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,446 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,446 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,447 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,447 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,448 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,448 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,449 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,449 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,455 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,455 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,458 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,458 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,459 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,459 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,460 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,460 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,460 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,461 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,462 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,462 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,463 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,463 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,464 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,464 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,465 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,465 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,467 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,467 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,467 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,468 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,468 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,468 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,468 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,468 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,470 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,472 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,472 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,472 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,473 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,473 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,473 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,473 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,474 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,474 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,475 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,475 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,475 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,475 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,476 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,476 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,476 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,477 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,477 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,477 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,478 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,478 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,478 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,478 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,479 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,479 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,482 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,483 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,483 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,483 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,484 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,484 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,485 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,491 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,491 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,492 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,492 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,492 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,493 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,493 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 07:20:28,498 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-13 07:20:28,565 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:20:28,577 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 07:20:28,578 INFO L340 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2021-10-13 07:20:28,603 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 07:20:28,618 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 86 transitions, 182 flow [2021-10-13 07:20:28,622 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 86 transitions, 182 flow [2021-10-13 07:20:28,624 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 88 places, 86 transitions, 182 flow [2021-10-13 07:20:28,694 INFO L129 PetriNetUnfolder]: 4/89 cut-off events. [2021-10-13 07:20:28,694 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-13 07:20:28,703 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 89 events. 4/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 111 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2021-10-13 07:20:28,709 INFO L116 LiptonReduction]: Number of co-enabled transitions 1534 [2021-10-13 07:20:41,267 INFO L131 LiptonReduction]: Checked pairs total: 4096 [2021-10-13 07:20:41,268 INFO L133 LiptonReduction]: Total number of compositions: 80 [2021-10-13 07:20:41,277 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 35 transitions, 80 flow [2021-10-13 07:20:41,325 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 613 states, 560 states have (on average 3.0910714285714285) internal successors, (1731), 612 states have internal predecessors, (1731), 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 07:20:41,331 INFO L276 IsEmpty]: Start isEmpty. Operand has 613 states, 560 states have (on average 3.0910714285714285) internal successors, (1731), 612 states have internal predecessors, (1731), 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 07:20:41,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-13 07:20:41,336 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:20:41,336 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-13 07:20:41,337 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-10-13 07:20:41,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:20:41,342 INFO L82 PathProgramCache]: Analyzing trace with hash 329, now seen corresponding path program 1 times [2021-10-13 07:20:41,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:20:41,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [698919353] [2021-10-13 07:20:41,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:20:41,356 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:20:41,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:20:41,357 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:20:41,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:20:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:20:41,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 07:20:41,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:20:41,446 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 07:20:41,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:20:41,447 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 07:20:41,448 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:20:41,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [698919353] [2021-10-13 07:20:41,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [698919353] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:20:41,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:20:41,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-13 07:20:41,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827764707] [2021-10-13 07:20:41,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:20:41,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:20:41,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:20:41,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:20:41,478 INFO L87 Difference]: Start difference. First operand has 613 states, 560 states have (on average 3.0910714285714285) internal successors, (1731), 612 states have internal predecessors, (1731), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 07:20:41,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:20:41,523 INFO L93 Difference]: Finished difference Result 611 states and 1729 transitions. [2021-10-13 07:20:41,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:20:41,525 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2021-10-13 07:20:41,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:20:41,550 INFO L225 Difference]: With dead ends: 611 [2021-10-13 07:20:41,550 INFO L226 Difference]: Without dead ends: 611 [2021-10-13 07:20:41,551 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:20:41,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-10-13 07:20:41,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 611. [2021-10-13 07:20:41,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 560 states have (on average 3.0875) internal successors, (1729), 610 states have internal predecessors, (1729), 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 07:20:41,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1729 transitions. [2021-10-13 07:20:41,655 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1729 transitions. Word has length 1 [2021-10-13 07:20:41,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:20:41,655 INFO L470 AbstractCegarLoop]: Abstraction has 611 states and 1729 transitions. [2021-10-13 07:20:41,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 07:20:41,656 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1729 transitions. [2021-10-13 07:20:41,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 07:20:41,656 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:20:41,657 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 07:20:41,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:20:41,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:20:41,870 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-10-13 07:20:41,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:20:41,870 INFO L82 PathProgramCache]: Analyzing trace with hash 10340, now seen corresponding path program 1 times [2021-10-13 07:20:41,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:20:41,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1507233950] [2021-10-13 07:20:41,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:20:41,872 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:20:41,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:20:41,873 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:20:41,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:20:41,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:20:41,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:20:41,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:20:41,981 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 07:20:41,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:20:41,988 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 07:20:41,988 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:20:41,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1507233950] [2021-10-13 07:20:41,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1507233950] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:20:41,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:20:41,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-13 07:20:41,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757643757] [2021-10-13 07:20:41,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:20:41,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:20:41,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:20:41,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:20:41,993 INFO L87 Difference]: Start difference. First operand 611 states and 1729 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:42,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:20:42,172 INFO L93 Difference]: Finished difference Result 610 states and 1728 transitions. [2021-10-13 07:20:42,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:20:42,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-13 07:20:42,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:20:42,183 INFO L225 Difference]: With dead ends: 610 [2021-10-13 07:20:42,183 INFO L226 Difference]: Without dead ends: 609 [2021-10-13 07:20:42,184 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:20:42,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2021-10-13 07:20:42,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 609. [2021-10-13 07:20:42,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 559 states have (on average 3.0894454382826475) internal successors, (1727), 608 states have internal predecessors, (1727), 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 07:20:42,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 1727 transitions. [2021-10-13 07:20:42,230 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 1727 transitions. Word has length 2 [2021-10-13 07:20:42,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:20:42,231 INFO L470 AbstractCegarLoop]: Abstraction has 609 states and 1727 transitions. [2021-10-13 07:20:42,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:42,231 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 1727 transitions. [2021-10-13 07:20:42,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 07:20:42,232 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:20:42,232 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 07:20:42,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:20:42,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:20:42,444 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-10-13 07:20:42,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:20:42,445 INFO L82 PathProgramCache]: Analyzing trace with hash 325131, now seen corresponding path program 1 times [2021-10-13 07:20:42,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:20:42,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623118674] [2021-10-13 07:20:42,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:20:42,446 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:20:42,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:20:42,449 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:20:42,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:20:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:20:42,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:20:42,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:20:42,626 INFO L354 Elim1Store]: treesize reduction 37, result has 32.7 percent of original size [2021-10-13 07:20:42,627 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 2 case distinctions, treesize of input 12 treesize of output 23 [2021-10-13 07:20:42,706 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 07:20:42,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:20:42,812 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 07:20:42,813 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:20:42,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623118674] [2021-10-13 07:20:42,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623118674] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:20:42,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:20:42,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 07:20:42,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97626624] [2021-10-13 07:20:42,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:20:42,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:20:42,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:20:42,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:20:42,817 INFO L87 Difference]: Start difference. First operand 609 states and 1727 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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 07:20:42,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:20:42,966 INFO L93 Difference]: Finished difference Result 601 states and 1711 transitions. [2021-10-13 07:20:42,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:20:42,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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 3 [2021-10-13 07:20:42,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:20:42,976 INFO L225 Difference]: With dead ends: 601 [2021-10-13 07:20:42,976 INFO L226 Difference]: Without dead ends: 601 [2021-10-13 07:20:42,977 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 76.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:20:42,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2021-10-13 07:20:43,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2021-10-13 07:20:43,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 554 states have (on average 3.088447653429603) internal successors, (1711), 600 states have internal predecessors, (1711), 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 07:20:43,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 1711 transitions. [2021-10-13 07:20:43,015 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 1711 transitions. Word has length 3 [2021-10-13 07:20:43,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:20:43,015 INFO L470 AbstractCegarLoop]: Abstraction has 601 states and 1711 transitions. [2021-10-13 07:20:43,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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 07:20:43,016 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 1711 transitions. [2021-10-13 07:20:43,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 07:20:43,016 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:20:43,017 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 07:20:43,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:20:43,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:20:43,229 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-10-13 07:20:43,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:20:43,230 INFO L82 PathProgramCache]: Analyzing trace with hash 325132, now seen corresponding path program 1 times [2021-10-13 07:20:43,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:20:43,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366367371] [2021-10-13 07:20:43,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:20:43,231 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:20:43,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:20:43,232 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:20:43,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:20:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:20:43,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:20:43,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:20:43,425 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-10-13 07:20:43,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 37 [2021-10-13 07:20:43,712 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 07:20:43,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:20:43,724 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 07:20:43,724 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:20:43,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366367371] [2021-10-13 07:20:43,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366367371] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:20:43,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:20:43,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-13 07:20:43,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482815090] [2021-10-13 07:20:43,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:20:43,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:20:43,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:20:43,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:20:43,728 INFO L87 Difference]: Start difference. First operand 601 states and 1711 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:43,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:20:43,832 INFO L93 Difference]: Finished difference Result 593 states and 1695 transitions. [2021-10-13 07:20:43,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:20:43,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-13 07:20:43,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:20:43,842 INFO L225 Difference]: With dead ends: 593 [2021-10-13 07:20:43,842 INFO L226 Difference]: Without dead ends: 593 [2021-10-13 07:20:43,843 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:20:43,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-10-13 07:20:43,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2021-10-13 07:20:43,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 549 states have (on average 3.087431693989071) internal successors, (1695), 592 states have internal predecessors, (1695), 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 07:20:43,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 1695 transitions. [2021-10-13 07:20:43,874 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 1695 transitions. Word has length 3 [2021-10-13 07:20:43,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:20:43,875 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 1695 transitions. [2021-10-13 07:20:43,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:43,875 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 1695 transitions. [2021-10-13 07:20:43,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 07:20:43,876 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:20:43,876 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 07:20:43,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:20:44,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:20:44,090 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-10-13 07:20:44,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:20:44,092 INFO L82 PathProgramCache]: Analyzing trace with hash 312459906, now seen corresponding path program 1 times [2021-10-13 07:20:44,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:20:44,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046973476] [2021-10-13 07:20:44,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:20:44,094 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:20:44,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:20:44,095 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:20:44,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 07:20:44,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:20:44,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:20:44,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:20:44,252 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 07:20:44,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:20:44,275 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 07:20:44,275 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:20:44,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046973476] [2021-10-13 07:20:44,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046973476] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:20:44,282 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:20:44,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-13 07:20:44,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321261954] [2021-10-13 07:20:44,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:20:44,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:20:44,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:20:44,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:20:44,285 INFO L87 Difference]: Start difference. First operand 593 states and 1695 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:44,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:20:44,307 INFO L93 Difference]: Finished difference Result 529 states and 1503 transitions. [2021-10-13 07:20:44,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:20:44,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-13 07:20:44,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:20:44,315 INFO L225 Difference]: With dead ends: 529 [2021-10-13 07:20:44,315 INFO L226 Difference]: Without dead ends: 529 [2021-10-13 07:20:44,316 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:20:44,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-10-13 07:20:44,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 529. [2021-10-13 07:20:44,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 494 states have (on average 3.04251012145749) internal successors, (1503), 528 states have internal predecessors, (1503), 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 07:20:44,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 1503 transitions. [2021-10-13 07:20:44,343 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 1503 transitions. Word has length 5 [2021-10-13 07:20:44,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:20:44,344 INFO L470 AbstractCegarLoop]: Abstraction has 529 states and 1503 transitions. [2021-10-13 07:20:44,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:44,345 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 1503 transitions. [2021-10-13 07:20:44,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 07:20:44,346 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:20:44,346 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 07:20:44,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:20:44,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:20:44,560 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-10-13 07:20:44,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:20:44,560 INFO L82 PathProgramCache]: Analyzing trace with hash 312459907, now seen corresponding path program 1 times [2021-10-13 07:20:44,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:20:44,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [61063398] [2021-10-13 07:20:44,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:20:44,561 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:20:44,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:20:44,562 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:20:44,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 07:20:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:20:44,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:20:44,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:20:44,656 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 07:20:44,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:20:44,674 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 07:20:44,674 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:20:44,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [61063398] [2021-10-13 07:20:44,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [61063398] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:20:44,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:20:44,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-13 07:20:44,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192391115] [2021-10-13 07:20:44,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:20:44,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:20:44,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:20:44,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:20:44,676 INFO L87 Difference]: Start difference. First operand 529 states and 1503 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:44,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:20:44,690 INFO L93 Difference]: Finished difference Result 465 states and 1311 transitions. [2021-10-13 07:20:44,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:20:44,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-13 07:20:44,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:20:44,695 INFO L225 Difference]: With dead ends: 465 [2021-10-13 07:20:44,696 INFO L226 Difference]: Without dead ends: 465 [2021-10-13 07:20:44,696 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:20:44,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2021-10-13 07:20:44,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2021-10-13 07:20:44,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 439 states have (on average 2.9863325740318905) internal successors, (1311), 464 states have internal predecessors, (1311), 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 07:20:44,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 1311 transitions. [2021-10-13 07:20:44,715 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 1311 transitions. Word has length 5 [2021-10-13 07:20:44,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:20:44,715 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 1311 transitions. [2021-10-13 07:20:44,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:20:44,716 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 1311 transitions. [2021-10-13 07:20:44,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 07:20:44,716 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:20:44,717 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 07:20:44,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:20:44,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:20:44,928 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-10-13 07:20:44,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:20:44,929 INFO L82 PathProgramCache]: Analyzing trace with hash 312459920, now seen corresponding path program 1 times [2021-10-13 07:20:44,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:20:44,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1143467109] [2021-10-13 07:20:44,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:20:44,930 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:20:44,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:20:44,931 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:20:44,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 07:20:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:20:45,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:20:45,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:20:45,101 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-10-13 07:20:45,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 60 [2021-10-13 07:20:46,185 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 07:20:46,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:20:46,215 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 07:20:46,215 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:20:46,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1143467109] [2021-10-13 07:20:46,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1143467109] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:20:46,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:20:46,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 07:20:46,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950045612] [2021-10-13 07:20:46,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:20:46,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:20:46,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:20:46,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:20:46,223 INFO L87 Difference]: Start difference. First operand 465 states and 1311 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 07:20:46,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:20:46,315 INFO L93 Difference]: Finished difference Result 401 states and 1119 transitions. [2021-10-13 07:20:46,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:20:46,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) Word has length 5 [2021-10-13 07:20:46,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:20:46,320 INFO L225 Difference]: With dead ends: 401 [2021-10-13 07:20:46,320 INFO L226 Difference]: Without dead ends: 401 [2021-10-13 07:20:46,321 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:20:46,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2021-10-13 07:20:46,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2021-10-13 07:20:46,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 384 states have (on average 2.9140625) internal successors, (1119), 400 states have internal predecessors, (1119), 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 07:20:46,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1119 transitions. [2021-10-13 07:20:46,338 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1119 transitions. Word has length 5 [2021-10-13 07:20:46,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:20:46,339 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 1119 transitions. [2021-10-13 07:20:46,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 07:20:46,341 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1119 transitions. [2021-10-13 07:20:46,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:20:46,342 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:20:46,342 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:20:46,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 07:20:46,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:20:46,555 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err1REQUIRES_VIOLATION === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-10-13 07:20:46,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:20:46,555 INFO L82 PathProgramCache]: Analyzing trace with hash -403181622, now seen corresponding path program 1 times [2021-10-13 07:20:46,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:20:46,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [341919517] [2021-10-13 07:20:46,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:20:46,556 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:20:46,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:20:46,557 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:20:46,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 07:20:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:20:46,649 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:20:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:20:46,730 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-13 07:20:46,730 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:20:46,731 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location t1Err1REQUIRES_VIOLATION [2021-10-13 07:20:46,742 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 07:20:46,742 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-13 07:20:46,743 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-13 07:20:46,743 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-13 07:20:46,743 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-13 07:20:46,743 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:20:46,743 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:20:46,744 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:20:46,744 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 07:20:46,744 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 07:20:46,744 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATION [2021-10-13 07:20:46,745 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATION [2021-10-13 07:20:46,745 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATION [2021-10-13 07:20:46,745 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATION [2021-10-13 07:20:46,745 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATION [2021-10-13 07:20:46,745 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATION [2021-10-13 07:20:46,746 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATION [2021-10-13 07:20:46,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:20:46,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:20:46,952 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 07:20:46,953 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:20:46,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:20:46 BasicIcfg [2021-10-13 07:20:46,985 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:20:46,986 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:20:46,986 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:20:46,986 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:20:46,987 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:20:28" (3/4) ... [2021-10-13 07:20:46,989 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 07:20:47,031 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:20:47,031 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:20:47,033 INFO L168 Benchmark]: Toolchain (without parser) took 20372.30 ms. Allocated memory was 58.7 MB in the beginning and 125.8 MB in the end (delta: 67.1 MB). Free memory was 35.1 MB in the beginning and 72.4 MB in the end (delta: -37.3 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:20:47,033 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 58.7 MB. Free memory is still 40.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:20:47,033 INFO L168 Benchmark]: CACSL2BoogieTranslator took 901.87 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 34.9 MB in the beginning and 46.9 MB in the end (delta: -12.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:20:47,034 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.85 ms. Allocated memory is still 86.0 MB. Free memory was 46.9 MB in the beginning and 44.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:20:47,034 INFO L168 Benchmark]: Boogie Preprocessor took 76.33 ms. Allocated memory is still 86.0 MB. Free memory was 44.6 MB in the beginning and 67.8 MB in the end (delta: -23.2 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:20:47,035 INFO L168 Benchmark]: RCFGBuilder took 680.52 ms. Allocated memory is still 86.0 MB. Free memory was 67.8 MB in the beginning and 54.0 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:20:47,035 INFO L168 Benchmark]: TraceAbstraction took 18591.79 ms. Allocated memory was 86.0 MB in the beginning and 125.8 MB in the end (delta: 39.8 MB). Free memory was 53.6 MB in the beginning and 74.5 MB in the end (delta: -20.9 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:20:47,036 INFO L168 Benchmark]: Witness Printer took 46.00 ms. Allocated memory is still 125.8 MB. Free memory was 74.5 MB in the beginning and 72.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:20:47,038 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 58.7 MB. Free memory is still 40.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 901.87 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 34.9 MB in the beginning and 46.9 MB in the end (delta: -12.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 67.85 ms. Allocated memory is still 86.0 MB. Free memory was 46.9 MB in the beginning and 44.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 76.33 ms. Allocated memory is still 86.0 MB. Free memory was 44.6 MB in the beginning and 67.8 MB in the end (delta: -23.2 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 680.52 ms. Allocated memory is still 86.0 MB. Free memory was 67.8 MB in the beginning and 54.0 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 18591.79 ms. Allocated memory was 86.0 MB in the beginning and 125.8 MB in the end (delta: 39.8 MB). Free memory was 53.6 MB in the beginning and 74.5 MB in the end (delta: -20.9 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. * Witness Printer took 46.00 ms. Allocated memory is still 125.8 MB. Free memory was 74.5 MB in the beginning and 72.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12646.1ms, 88 PlacesBefore, 39 PlacesAfterwards, 86 TransitionsBefore, 35 TransitionsAfterwards, 1534 CoEnabledTransitionPairs, 6 FixpointIterations, 40 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 80 TotalNumberOfCompositions, 4096 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1854, positive: 1691, positive conditional: 0, positive unconditional: 1691, negative: 163, negative conditional: 0, negative unconditional: 163, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 855, positive: 822, positive conditional: 0, positive unconditional: 822, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 855, positive: 817, positive conditional: 0, positive unconditional: 817, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 38, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 809, positive: 32, positive conditional: 0, positive unconditional: 32, negative: 776, negative conditional: 0, negative unconditional: 776, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1854, positive: 869, positive conditional: 0, positive unconditional: 869, negative: 130, negative conditional: 0, negative unconditional: 130, unknown: 855, unknown conditional: 0, unknown unconditional: 855] , Statistics on independence cache: Total cache size (in pairs): 149, Positive cache size: 130, Positive conditional cache size: 0, Positive unconditional cache size: 130, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19 - 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 - CounterExampleResult [Line: 1044]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L1037] 0 int size; [L1038] 0 int ind; [L1039] 0 int j = 2, i = 1; [L1057] 0 size = __VERIFIER_nondet_int() [L1058] COND FALSE 0 !(size < 1 || size > 20) [L1061] 0 int *a = (int *)malloc(size); [L1062] 0 pthread_t id1, id2; [L1063] 0 ind = 0 [L1064] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, a) VAL [arg={1:0}, i=1, ind=0, j=2, size=2] [L1041] 1 int *a = (int *)arg; VAL [a={1:0}, arg={1:0}, arg={1:0}, i=1, ind=0, j=2, size=2] [L1042] COND TRUE 1 ind < size - 1 VAL [a={1:0}, arg={1:0}, arg={1:0}, i=1, ind=0, j=2, size=2] [L1043] 1 ++ind [L1044] 1 a[ind] = i - UnprovableResult [Line: 1056]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1065]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1065]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1065]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 108 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 18386.5ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 15.1ms, AutomataDifference: 719.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12747.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 178 SDtfs, 162 SDslu, 55 SDs, 0 SdLazy, 70 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 419.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 134.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=613occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 265.9ms AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 72.7ms SsaConstructionTime, 201.9ms SatisfiabilityAnalysisTime, 2059.7ms InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 34 ConstructedInterpolants, 4 QuantifiedInterpolants, 354 SizeOfPredicates, 7 NumberOfNonLiveVariables, 254 ConjunctsInSsa, 15 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 RESULT: Ultimate proved your program to be incorrect! [2021-10-13 07:20:47,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d86986-51ec-45b0-94e7-ae698d41cb2a/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...