./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-memsafety/fillarray.i -s /tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 317acdded5b2f05710e753bf8fd3c2308f1aec62 .............................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-memsafety/fillarray.i -s /tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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 0.2.0-a4ecdab [2020-11-30 02:28:25,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:28:25,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:28:25,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:28:25,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:28:25,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:28:25,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:28:25,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:28:25,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:28:25,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:28:25,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:28:25,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:28:25,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:28:25,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:28:25,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:28:25,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:28:25,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:28:25,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:28:25,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:28:25,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:28:25,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:28:25,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:28:25,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:28:25,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:28:25,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:28:25,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:28:25,709 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:28:25,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:28:25,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:28:25,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:28:25,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:28:25,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:28:25,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:28:25,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:28:25,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:28:25,721 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:28:25,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:28:25,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:28:25,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:28:25,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:28:25,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:28:25,729 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-11-30 02:28:25,762 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:28:25,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:28:25,764 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:28:25,765 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:28:25,766 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:28:25,766 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:28:25,767 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:28:25,767 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:28:25,768 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:28:25,768 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:28:25,769 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:28:25,769 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:28:25,770 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:28:25,770 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:28:25,770 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:28:25,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 02:28:25,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 02:28:25,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:28:25,773 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:28:25,773 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 02:28:25,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:28:25,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:28:25,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:28:25,775 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-30 02:28:25,775 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-30 02:28:25,776 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-30 02:28:25,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:28:25,776 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:28:25,777 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:28:25,777 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:28:25,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:28:25,778 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:28:25,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:28:25,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:28:25,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:28:25,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:28:25,780 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:28:25,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:28:25,781 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:28:25,781 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:28:25,781 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 317acdded5b2f05710e753bf8fd3c2308f1aec62 [2020-11-30 02:28:26,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:28:26,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:28:26,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:28:26,116 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:28:26,117 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:28:26,118 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan/../../sv-benchmarks/c/pthread-memsafety/fillarray.i [2020-11-30 02:28:26,197 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan/data/d30d9db2f/021dc427a45d46089fedb87047adee62/FLAG6a30cf673 [2020-11-30 02:28:26,958 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:28:26,959 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/sv-benchmarks/c/pthread-memsafety/fillarray.i [2020-11-30 02:28:26,979 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan/data/d30d9db2f/021dc427a45d46089fedb87047adee62/FLAG6a30cf673 [2020-11-30 02:28:27,171 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan/data/d30d9db2f/021dc427a45d46089fedb87047adee62 [2020-11-30 02:28:27,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:28:27,175 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:28:27,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:28:27,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:28:27,180 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:28:27,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:28:27" (1/1) ... [2020-11-30 02:28:27,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ba69ab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:28:27, skipping insertion in model container [2020-11-30 02:28:27,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:28:27" (1/1) ... [2020-11-30 02:28:27,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:28:27,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:28:27,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:28:27,821 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) [2020-11-30 02:28:27,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6a3314ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:28:27, skipping insertion in model container [2020-11-30 02:28:27,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:28:27,823 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-11-30 02:28:27,827 INFO L168 Benchmark]: Toolchain (without parser) took 649.08 ms. Allocated memory is still 92.3 MB. Free memory was 60.4 MB in the beginning and 65.6 MB in the end (delta: -5.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:28:27,827 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory is still 50.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:28:27,830 INFO L168 Benchmark]: CACSL2BoogieTranslator took 646.30 ms. Allocated memory is still 92.3 MB. Free memory was 60.2 MB in the beginning and 65.6 MB in the end (delta: -5.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:28:27,833 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory is still 50.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 646.30 ms. Allocated memory is still 92.3 MB. Free memory was 60.2 MB in the beginning and 65.6 MB in the end (delta: -5.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 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 0.2.0-a4ecdab [2020-11-30 02:28:30,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:28:30,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:28:30,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:28:30,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:28:30,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:28:30,379 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:28:30,386 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:28:30,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:28:30,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:28:30,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:28:30,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:28:30,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:28:30,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:28:30,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:28:30,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:28:30,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:28:30,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:28:30,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:28:30,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:28:30,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:28:30,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:28:30,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:28:30,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:28:30,450 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:28:30,450 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:28:30,451 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:28:30,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:28:30,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:28:30,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:28:30,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:28:30,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:28:30,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:28:30,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:28:30,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:28:30,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:28:30,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:28:30,463 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:28:30,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:28:30,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:28:30,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:28:30,466 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-11-30 02:28:30,515 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:28:30,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:28:30,518 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:28:30,518 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:28:30,518 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:28:30,519 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:28:30,519 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:28:30,519 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:28:30,519 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:28:30,521 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 02:28:30,522 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 02:28:30,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:28:30,523 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:28:30,523 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 02:28:30,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:28:30,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:28:30,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:28:30,524 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-30 02:28:30,525 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-30 02:28:30,525 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-30 02:28:30,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:28:30,525 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:28:30,526 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 02:28:30,526 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 02:28:30,526 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:28:30,526 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:28:30,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:28:30,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 02:28:30,527 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:28:30,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:28:30,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:28:30,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:28:30,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:28:30,553 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-30 02:28:30,553 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 02:28:30,553 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:28:30,553 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:28:30,554 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 317acdded5b2f05710e753bf8fd3c2308f1aec62 [2020-11-30 02:28:30,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:28:31,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:28:31,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:28:31,049 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:28:31,050 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:28:31,051 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan/../../sv-benchmarks/c/pthread-memsafety/fillarray.i [2020-11-30 02:28:31,157 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan/data/e6f02c0fa/d4795c942098473f93252e17cc5376af/FLAG93dcc00f6 [2020-11-30 02:28:31,917 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:28:31,917 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/sv-benchmarks/c/pthread-memsafety/fillarray.i [2020-11-30 02:28:31,937 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan/data/e6f02c0fa/d4795c942098473f93252e17cc5376af/FLAG93dcc00f6 [2020-11-30 02:28:32,151 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan/data/e6f02c0fa/d4795c942098473f93252e17cc5376af [2020-11-30 02:28:32,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:28:32,156 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:28:32,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:28:32,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:28:32,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:28:32,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:28:32" (1/1) ... [2020-11-30 02:28:32,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a599b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:28:32, skipping insertion in model container [2020-11-30 02:28:32,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:28:32" (1/1) ... [2020-11-30 02:28:32,186 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:28:32,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:28:32,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:28:32,892 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-11-30 02:28:32,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:28:32,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:28:32,980 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:28:33,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:28:33,209 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:28:33,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:28:33 WrapperNode [2020-11-30 02:28:33,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:28:33,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:28:33,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:28:33,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:28:33,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:28:33" (1/1) ... [2020-11-30 02:28:33,240 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:28:33" (1/1) ... [2020-11-30 02:28:33,261 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:28:33,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:28:33,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:28:33,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:28:33,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:28:33" (1/1) ... [2020-11-30 02:28:33,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:28:33" (1/1) ... [2020-11-30 02:28:33,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:28:33" (1/1) ... [2020-11-30 02:28:33,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:28:33" (1/1) ... [2020-11-30 02:28:33,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:28:33" (1/1) ... [2020-11-30 02:28:33,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:28:33" (1/1) ... [2020-11-30 02:28:33,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:28:33" (1/1) ... [2020-11-30 02:28:33,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:28:33,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:28:33,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:28:33,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:28:33,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:28:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:28:33,365 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-11-30 02:28:33,366 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-11-30 02:28:33,366 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-11-30 02:28:33,366 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-11-30 02:28:33,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:28:33,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 02:28:33,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-30 02:28:33,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-30 02:28:33,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:28:33,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:28:33,369 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-30 02:28:34,169 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:28:34,169 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-30 02:28:34,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:28:34 BoogieIcfgContainer [2020-11-30 02:28:34,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:28:34,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:28:34,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:28:34,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:28:34,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:28:32" (1/3) ... [2020-11-30 02:28:34,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca59a81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:28:34, skipping insertion in model container [2020-11-30 02:28:34,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:28:33" (2/3) ... [2020-11-30 02:28:34,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca59a81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:28:34, skipping insertion in model container [2020-11-30 02:28:34,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:28:34" (3/3) ... [2020-11-30 02:28:34,180 INFO L111 eAbstractionObserver]: Analyzing ICFG fillarray.i [2020-11-30 02:28:34,191 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:28:34,196 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-11-30 02:28:34,197 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-30 02:28:34,230 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,230 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,230 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,230 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,231 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,231 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,231 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,231 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,231 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,231 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,232 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,232 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,232 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,232 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,233 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,233 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,233 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,233 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,234 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,234 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,234 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,234 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,234 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,234 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,234 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,235 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,235 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,235 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,235 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,236 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,236 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,236 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,236 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,236 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,239 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,239 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,239 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,239 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,239 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,240 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,240 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,244 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,245 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,245 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,245 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,245 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,245 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,246 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:28:34,248 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-30 02:28:34,259 INFO L253 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2020-11-30 02:28:34,289 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:28:34,289 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-30 02:28:34,290 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:28:34,290 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:28:34,290 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:28:34,290 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:28:34,290 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:28:34,290 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:28:34,307 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-30 02:28:34,310 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 79 transitions, 168 flow [2020-11-30 02:28:34,313 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 79 transitions, 168 flow [2020-11-30 02:28:34,315 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 81 places, 79 transitions, 168 flow [2020-11-30 02:28:34,368 INFO L129 PetriNetUnfolder]: 4/82 cut-off events. [2020-11-30 02:28:34,368 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-30 02:28:34,374 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 82 events. 4/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 122 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2020-11-30 02:28:34,377 INFO L116 LiptonReduction]: Number of co-enabled transitions 1404 [2020-11-30 02:28:34,833 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-11-30 02:28:35,256 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-11-30 02:28:35,597 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-11-30 02:28:36,140 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-11-30 02:28:37,381 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2020-11-30 02:28:38,688 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-11-30 02:28:38,861 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-11-30 02:28:39,589 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-11-30 02:28:39,981 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-11-30 02:28:41,422 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 104 DAG size of output: 103 [2020-11-30 02:28:42,205 WARN L193 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-30 02:28:42,326 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2020-11-30 02:28:42,414 INFO L131 LiptonReduction]: Checked pairs total: 3493 [2020-11-30 02:28:42,414 INFO L133 LiptonReduction]: Total number of compositions: 67 [2020-11-30 02:28:42,424 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 35 transitions, 80 flow [2020-11-30 02:28:42,486 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 615 states. [2020-11-30 02:28:42,488 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states. [2020-11-30 02:28:42,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2020-11-30 02:28:42,496 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:28:42,498 INFO L422 BasicCegarLoop]: trace histogram [1] [2020-11-30 02:28:42,499 INFO L429 AbstractCegarLoop]: === Iteration 1 === [t1Err1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION]=== [2020-11-30 02:28:42,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:28:42,513 INFO L82 PathProgramCache]: Analyzing trace with hash 303, now seen corresponding path program 1 times [2020-11-30 02:28:42,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:28:42,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331906762] [2020-11-30 02:28:42,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-30 02:28:42,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:28:42,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 02:28:42,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:28:42,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:28:42,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:28:42,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:28:42,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1331906762] [2020-11-30 02:28:42,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:28:42,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2020-11-30 02:28:42,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467349405] [2020-11-30 02:28:42,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 02:28:42,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:28:42,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 02:28:42,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:28:42,668 INFO L87 Difference]: Start difference. First operand 615 states. Second operand 2 states. [2020-11-30 02:28:42,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:28:42,719 INFO L93 Difference]: Finished difference Result 613 states and 1733 transitions. [2020-11-30 02:28:42,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 02:28:42,721 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 1 [2020-11-30 02:28:42,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:28:42,752 INFO L225 Difference]: With dead ends: 613 [2020-11-30 02:28:42,752 INFO L226 Difference]: Without dead ends: 611 [2020-11-30 02:28:42,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:28:42,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2020-11-30 02:28:42,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 611. [2020-11-30 02:28:42,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-11-30 02:28:42,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1729 transitions. [2020-11-30 02:28:42,894 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1729 transitions. Word has length 1 [2020-11-30 02:28:42,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:28:42,894 INFO L481 AbstractCegarLoop]: Abstraction has 611 states and 1729 transitions. [2020-11-30 02:28:42,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 02:28:42,895 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1729 transitions. [2020-11-30 02:28:42,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-11-30 02:28:42,895 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:28:42,895 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2020-11-30 02:28:43,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 02:28:43,108 INFO L429 AbstractCegarLoop]: === Iteration 2 === [t1Err1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION]=== [2020-11-30 02:28:43,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:28:43,113 INFO L82 PathProgramCache]: Analyzing trace with hash 9464, now seen corresponding path program 1 times [2020-11-30 02:28:43,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:28:43,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779993844] [2020-11-30 02:28:43,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-30 02:28:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:28:43,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 02:28:43,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:28:43,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:28:43,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:28:43,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:28:43,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779993844] [2020-11-30 02:28:43,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:28:43,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2020-11-30 02:28:43,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281829451] [2020-11-30 02:28:43,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:28:43,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:28:43,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:28:43,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:28:43,344 INFO L87 Difference]: Start difference. First operand 611 states and 1729 transitions. Second operand 3 states. [2020-11-30 02:28:43,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:28:43,464 INFO L93 Difference]: Finished difference Result 610 states and 1728 transitions. [2020-11-30 02:28:43,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:28:43,468 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2020-11-30 02:28:43,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:28:43,474 INFO L225 Difference]: With dead ends: 610 [2020-11-30 02:28:43,474 INFO L226 Difference]: Without dead ends: 609 [2020-11-30 02:28:43,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:28:43,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2020-11-30 02:28:43,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 609. [2020-11-30 02:28:43,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 609 states. [2020-11-30 02:28:43,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 1727 transitions. [2020-11-30 02:28:43,504 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 1727 transitions. Word has length 2 [2020-11-30 02:28:43,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:28:43,504 INFO L481 AbstractCegarLoop]: Abstraction has 609 states and 1727 transitions. [2020-11-30 02:28:43,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:28:43,507 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 1727 transitions. [2020-11-30 02:28:43,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-30 02:28:43,507 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:28:43,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-30 02:28:43,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 02:28:43,726 INFO L429 AbstractCegarLoop]: === Iteration 3 === [t1Err1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION]=== [2020-11-30 02:28:43,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:28:43,727 INFO L82 PathProgramCache]: Analyzing trace with hash 295877, now seen corresponding path program 1 times [2020-11-30 02:28:43,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:28:43,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1258705375] [2020-11-30 02:28:43,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-30 02:28:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:28:43,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 02:28:43,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:28:43,924 INFO L350 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2020-11-30 02:28:43,924 INFO L384 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 16 [2020-11-30 02:28:43,925 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 02:28:43,941 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:28:43,945 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-30 02:28:43,945 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:12, output treesize:16 [2020-11-30 02:28:43,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:28:43,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:28:43,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:28:43,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1258705375] [2020-11-30 02:28:43,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:28:43,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2020-11-30 02:28:43,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402105856] [2020-11-30 02:28:43,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:28:43,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:28:43,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:28:43,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:28:43,976 INFO L87 Difference]: Start difference. First operand 609 states and 1727 transitions. Second operand 3 states. [2020-11-30 02:28:44,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:28:44,100 INFO L93 Difference]: Finished difference Result 601 states and 1711 transitions. [2020-11-30 02:28:44,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:28:44,102 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-11-30 02:28:44,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:28:44,108 INFO L225 Difference]: With dead ends: 601 [2020-11-30 02:28:44,109 INFO L226 Difference]: Without dead ends: 601 [2020-11-30 02:28:44,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:28:44,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-11-30 02:28:44,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2020-11-30 02:28:44,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 601 states. [2020-11-30 02:28:44,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 1711 transitions. [2020-11-30 02:28:44,142 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 1711 transitions. Word has length 3 [2020-11-30 02:28:44,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:28:44,142 INFO L481 AbstractCegarLoop]: Abstraction has 601 states and 1711 transitions. [2020-11-30 02:28:44,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:28:44,142 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 1711 transitions. [2020-11-30 02:28:44,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-30 02:28:44,143 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:28:44,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-30 02:28:44,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 02:28:44,360 INFO L429 AbstractCegarLoop]: === Iteration 4 === [t1Err1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION]=== [2020-11-30 02:28:44,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:28:44,361 INFO L82 PathProgramCache]: Analyzing trace with hash 295878, now seen corresponding path program 1 times [2020-11-30 02:28:44,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:28:44,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [170277306] [2020-11-30 02:28:44,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-30 02:28:44,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:28:44,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 02:28:44,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:28:44,703 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 17 [2020-11-30 02:28:44,704 INFO L350 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-11-30 02:28:44,704 INFO L384 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 33 [2020-11-30 02:28:44,704 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 02:28:44,753 INFO L625 ElimStorePlain]: treesize reduction 10, result has 72.2 percent of original size [2020-11-30 02:28:44,765 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-30 02:28:44,766 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:16, output treesize:14 [2020-11-30 02:28:44,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:28:44,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:28:44,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:28:44,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [170277306] [2020-11-30 02:28:44,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:28:44,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2020-11-30 02:28:44,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240459487] [2020-11-30 02:28:44,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:28:44,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:28:44,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:28:44,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:28:44,828 INFO L87 Difference]: Start difference. First operand 601 states and 1711 transitions. Second operand 4 states. [2020-11-30 02:28:44,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:28:44,986 INFO L93 Difference]: Finished difference Result 593 states and 1695 transitions. [2020-11-30 02:28:44,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:28:44,988 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2020-11-30 02:28:44,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:28:44,996 INFO L225 Difference]: With dead ends: 593 [2020-11-30 02:28:44,999 INFO L226 Difference]: Without dead ends: 593 [2020-11-30 02:28:45,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:28:45,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-11-30 02:28:45,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2020-11-30 02:28:45,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2020-11-30 02:28:45,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 1695 transitions. [2020-11-30 02:28:45,022 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 1695 transitions. Word has length 3 [2020-11-30 02:28:45,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:28:45,023 INFO L481 AbstractCegarLoop]: Abstraction has 593 states and 1695 transitions. [2020-11-30 02:28:45,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:28:45,023 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 1695 transitions. [2020-11-30 02:28:45,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 02:28:45,023 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:28:45,024 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 02:28:45,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 02:28:45,238 INFO L429 AbstractCegarLoop]: === Iteration 5 === [t1Err1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION]=== [2020-11-30 02:28:45,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:28:45,239 INFO L82 PathProgramCache]: Analyzing trace with hash 284343408, now seen corresponding path program 1 times [2020-11-30 02:28:45,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:28:45,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1683856381] [2020-11-30 02:28:45,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-30 02:28:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:28:45,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 02:28:45,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:28:45,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:28:45,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:28:45,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:28:45,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1683856381] [2020-11-30 02:28:45,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:28:45,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2020-11-30 02:28:45,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840987649] [2020-11-30 02:28:45,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:28:45,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:28:45,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:28:45,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:28:45,388 INFO L87 Difference]: Start difference. First operand 593 states and 1695 transitions. Second operand 3 states. [2020-11-30 02:28:45,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:28:45,408 INFO L93 Difference]: Finished difference Result 529 states and 1503 transitions. [2020-11-30 02:28:45,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:28:45,409 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-30 02:28:45,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:28:45,413 INFO L225 Difference]: With dead ends: 529 [2020-11-30 02:28:45,414 INFO L226 Difference]: Without dead ends: 529 [2020-11-30 02:28:45,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:28:45,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-11-30 02:28:45,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 529. [2020-11-30 02:28:45,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 529 states. [2020-11-30 02:28:45,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 1503 transitions. [2020-11-30 02:28:45,436 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 1503 transitions. Word has length 5 [2020-11-30 02:28:45,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:28:45,437 INFO L481 AbstractCegarLoop]: Abstraction has 529 states and 1503 transitions. [2020-11-30 02:28:45,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:28:45,437 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 1503 transitions. [2020-11-30 02:28:45,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 02:28:45,438 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:28:45,438 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 02:28:45,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-30 02:28:45,655 INFO L429 AbstractCegarLoop]: === Iteration 6 === [t1Err1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION]=== [2020-11-30 02:28:45,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:28:45,656 INFO L82 PathProgramCache]: Analyzing trace with hash 284343377, now seen corresponding path program 1 times [2020-11-30 02:28:45,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:28:45,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1375651821] [2020-11-30 02:28:45,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-30 02:28:45,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:28:45,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 02:28:45,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:28:45,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:28:45,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:28:45,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:28:45,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1375651821] [2020-11-30 02:28:45,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:28:45,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2020-11-30 02:28:45,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440568418] [2020-11-30 02:28:45,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:28:45,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:28:45,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:28:45,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:28:45,760 INFO L87 Difference]: Start difference. First operand 529 states and 1503 transitions. Second operand 3 states. [2020-11-30 02:28:45,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:28:45,777 INFO L93 Difference]: Finished difference Result 465 states and 1311 transitions. [2020-11-30 02:28:45,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:28:45,778 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-30 02:28:45,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:28:45,783 INFO L225 Difference]: With dead ends: 465 [2020-11-30 02:28:45,783 INFO L226 Difference]: Without dead ends: 465 [2020-11-30 02:28:45,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:28:45,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2020-11-30 02:28:45,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2020-11-30 02:28:45,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-11-30 02:28:45,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 1311 transitions. [2020-11-30 02:28:45,803 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 1311 transitions. Word has length 5 [2020-11-30 02:28:45,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:28:45,803 INFO L481 AbstractCegarLoop]: Abstraction has 465 states and 1311 transitions. [2020-11-30 02:28:45,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:28:45,803 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 1311 transitions. [2020-11-30 02:28:45,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 02:28:45,804 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:28:45,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 02:28:46,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-30 02:28:46,024 INFO L429 AbstractCegarLoop]: === Iteration 7 === [t1Err1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION]=== [2020-11-30 02:28:46,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:28:46,025 INFO L82 PathProgramCache]: Analyzing trace with hash 284343410, now seen corresponding path program 1 times [2020-11-30 02:28:46,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:28:46,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [502763098] [2020-11-30 02:28:46,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-30 02:28:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:28:46,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 02:28:46,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:28:46,191 INFO L350 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2020-11-30 02:28:46,191 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 23 [2020-11-30 02:28:46,193 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 02:28:46,207 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:28:46,214 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-30 02:28:46,214 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:21, output treesize:20 [2020-11-30 02:28:46,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:28:46,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:28:46,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:28:46,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [502763098] [2020-11-30 02:28:46,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:28:46,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2020-11-30 02:28:46,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981249591] [2020-11-30 02:28:46,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:28:46,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:28:46,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:28:46,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:28:46,300 INFO L87 Difference]: Start difference. First operand 465 states and 1311 transitions. Second operand 4 states. [2020-11-30 02:28:46,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:28:46,394 INFO L93 Difference]: Finished difference Result 401 states and 1119 transitions. [2020-11-30 02:28:46,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:28:46,395 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-30 02:28:46,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:28:46,399 INFO L225 Difference]: With dead ends: 401 [2020-11-30 02:28:46,399 INFO L226 Difference]: Without dead ends: 401 [2020-11-30 02:28:46,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:28:46,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2020-11-30 02:28:46,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2020-11-30 02:28:46,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-11-30 02:28:46,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1119 transitions. [2020-11-30 02:28:46,415 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1119 transitions. Word has length 5 [2020-11-30 02:28:46,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:28:46,415 INFO L481 AbstractCegarLoop]: Abstraction has 401 states and 1119 transitions. [2020-11-30 02:28:46,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:28:46,415 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1119 transitions. [2020-11-30 02:28:46,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 02:28:46,417 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:28:46,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:28:46,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-30 02:28:46,633 INFO L429 AbstractCegarLoop]: === Iteration 8 === [t1Err1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION]=== [2020-11-30 02:28:46,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:28:46,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1621862996, now seen corresponding path program 1 times [2020-11-30 02:28:46,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:28:46,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1676055481] [2020-11-30 02:28:46,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-30 02:28:46,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:28:46,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 02:28:46,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:28:46,773 INFO L350 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2020-11-30 02:28:46,773 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 23 [2020-11-30 02:28:46,774 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 02:28:46,783 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:28:46,786 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-30 02:28:46,786 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:21, output treesize:20 [2020-11-30 02:28:46,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:28:46,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:28:47,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:28:47,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1676055481] [2020-11-30 02:28:47,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:28:47,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2020-11-30 02:28:47,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016187953] [2020-11-30 02:28:47,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 02:28:47,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:28:47,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 02:28:47,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:28:47,014 INFO L87 Difference]: Start difference. First operand 401 states and 1119 transitions. Second operand 8 states. [2020-11-30 02:28:47,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:28:47,506 INFO L93 Difference]: Finished difference Result 630 states and 1760 transitions. [2020-11-30 02:28:47,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:28:47,508 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2020-11-30 02:28:47,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:28:47,513 INFO L225 Difference]: With dead ends: 630 [2020-11-30 02:28:47,514 INFO L226 Difference]: Without dead ends: 630 [2020-11-30 02:28:47,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-30 02:28:47,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2020-11-30 02:28:47,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 551. [2020-11-30 02:28:47,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551 states. [2020-11-30 02:28:47,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 1618 transitions. [2020-11-30 02:28:47,537 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 1618 transitions. Word has length 7 [2020-11-30 02:28:47,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:28:47,538 INFO L481 AbstractCegarLoop]: Abstraction has 551 states and 1618 transitions. [2020-11-30 02:28:47,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 02:28:47,538 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 1618 transitions. [2020-11-30 02:28:47,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 02:28:47,540 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:28:47,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:28:47,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-30 02:28:47,752 INFO L429 AbstractCegarLoop]: === Iteration 9 === [t1Err1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION]=== [2020-11-30 02:28:47,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:28:47,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1621862994, now seen corresponding path program 1 times [2020-11-30 02:28:47,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:28:47,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1306082622] [2020-11-30 02:28:47,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-11-30 02:28:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:28:47,835 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:28:47,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:28:47,872 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:28:47,906 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-30 02:28:47,906 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 02:28:48,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-30 02:28:48,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:28:48 BasicIcfg [2020-11-30 02:28:48,155 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:28:48,156 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:28:48,156 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:28:48,156 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:28:48,157 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:28:34" (3/4) ... [2020-11-30 02:28:48,159 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 02:28:48,227 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b52e9bc3-6824-4c2d-a8d4-92ec3b40c460/bin/utaipan/witness.graphml [2020-11-30 02:28:48,227 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:28:48,229 INFO L168 Benchmark]: Toolchain (without parser) took 16073.06 ms. Allocated memory was 77.6 MB in the beginning and 119.5 MB in the end (delta: 41.9 MB). Free memory was 62.6 MB in the beginning and 52.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 50.7 MB. Max. memory is 16.1 GB. [2020-11-30 02:28:48,230 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 77.6 MB. Free memory was 60.8 MB in the beginning and 60.7 MB in the end (delta: 64.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:28:48,231 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1052.95 ms. Allocated memory is still 77.6 MB. Free memory was 62.4 MB in the beginning and 41.4 MB in the end (delta: 21.0 MB). Peak memory consumption was 30.3 MB. Max. memory is 16.1 GB. [2020-11-30 02:28:48,234 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.96 ms. Allocated memory is still 77.6 MB. Free memory was 41.4 MB in the beginning and 39.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:28:48,235 INFO L168 Benchmark]: Boogie Preprocessor took 33.50 ms. Allocated memory is still 77.6 MB. Free memory was 39.3 MB in the beginning and 37.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:28:48,235 INFO L168 Benchmark]: RCFGBuilder took 875.81 ms. Allocated memory was 77.6 MB in the beginning and 98.6 MB in the end (delta: 21.0 MB). Free memory was 37.7 MB in the beginning and 61.8 MB in the end (delta: -24.0 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:28:48,236 INFO L168 Benchmark]: TraceAbstraction took 13981.99 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 61.2 MB in the beginning and 55.4 MB in the end (delta: 5.8 MB). Peak memory consumption was 27.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:28:48,237 INFO L168 Benchmark]: Witness Printer took 71.64 ms. Allocated memory is still 119.5 MB. Free memory was 55.4 MB in the beginning and 52.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:28:48,240 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 77.6 MB. Free memory was 60.8 MB in the beginning and 60.7 MB in the end (delta: 64.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1052.95 ms. Allocated memory is still 77.6 MB. Free memory was 62.4 MB in the beginning and 41.4 MB in the end (delta: 21.0 MB). Peak memory consumption was 30.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.96 ms. Allocated memory is still 77.6 MB. Free memory was 41.4 MB in the beginning and 39.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.50 ms. Allocated memory is still 77.6 MB. Free memory was 39.3 MB in the beginning and 37.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 875.81 ms. Allocated memory was 77.6 MB in the beginning and 98.6 MB in the end (delta: 21.0 MB). Free memory was 37.7 MB in the beginning and 61.8 MB in the end (delta: -24.0 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13981.99 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 61.2 MB in the beginning and 55.4 MB in the end (delta: 5.8 MB). Peak memory consumption was 27.6 MB. Max. memory is 16.1 GB. * Witness Printer took 71.64 ms. Allocated memory is still 119.5 MB. Free memory was 55.4 MB in the beginning and 52.2 MB in the end (delta: 3.1 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 755 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 5 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 1.1s, 150 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 8.1s, 81 PlacesBefore, 39 PlacesAfterwards, 79 TransitionsBefore, 35 TransitionsAfterwards, 1404 CoEnabledTransitionPairs, 5 FixpointIterations, 34 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 67 TotalNumberOfCompositions, 3493 MoverChecksTotal - 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={-2147483648:0}, i=1, ind=0, j=2, size=2] [L1041] 1 int *a = (int *)arg; VAL [a={-2147483648:0}, arg={-2147483648:0}, arg={-2147483648:0}, i=1, ind=0, j=2, size=2] [L1042] COND TRUE 1 ind < size - 1 VAL [a={-2147483648:0}, arg={-2147483648:0}, arg={-2147483648:0}, i=1, ind=0, j=2, size=2] [L1043] 1 ++ind [L1044] 1 a[ind] = i - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 75 locations, 12 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.8s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.1s, HoareTripleCheckerStatistics: 201 SDtfs, 238 SDslu, 150 SDs, 0 SdLazy, 183 SolverSat, 2 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=615occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 79 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 46 ConstructedInterpolants, 10 QuantifiedInterpolants, 1494 SizeOfPredicates, 19 NumberOfNonLiveVariables, 271 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...