./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_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-memsafety/fillarray.i -s /tmp/vcloud-vcloud-master/worker/run_dir_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/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_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-memsafety/fillarray.i -s /tmp/vcloud-vcloud-master/worker/run_dir_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/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 [2020-11-28 07:40:52,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:40:52,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:40:53,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:40:53,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:40:53,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:40:53,018 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:40:53,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:40:53,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:40:53,024 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:40:53,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:40:53,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:40:53,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:40:53,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:40:53,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:40:53,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:40:53,032 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:40:53,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:40:53,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:40:53,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:40:53,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:40:53,047 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:40:53,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:40:53,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:40:53,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:40:53,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:40:53,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:40:53,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:40:53,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:40:53,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:40:53,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:40:53,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:40:53,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:40:53,066 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:40:53,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:40:53,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:40:53,068 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:40:53,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:40:53,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:40:53,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:40:53,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:40:53,074 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-11-28 07:40:53,118 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:40:53,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:40:53,119 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:40:53,119 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:40:53,120 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:40:53,120 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:40:53,120 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:40:53,120 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:40:53,120 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:40:53,120 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:40:53,121 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:40:53,121 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:40:53,121 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:40:53,121 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:40:53,121 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:40:53,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 07:40:53,122 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 07:40:53,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:40:53,123 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:40:53,123 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 07:40:53,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:40:53,123 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:40:53,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:40:53,124 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 07:40:53,127 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 07:40:53,127 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 07:40:53,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:40:53,127 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:40:53,128 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:40:53,128 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:40:53,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:40:53,129 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:40:53,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:40:53,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:40:53,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:40:53,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:40:53,131 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:40:53,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:40:53,131 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:40:53,131 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:40:53,135 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_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 317acdded5b2f05710e753bf8fd3c2308f1aec62 [2020-11-28 07:40:53,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:40:53,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:40:53,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:40:53,413 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:40:53,413 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:40:53,414 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/bin/utaipan/../../sv-benchmarks/c/pthread-memsafety/fillarray.i [2020-11-28 07:40:53,497 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/bin/utaipan/data/a668c02df/e83e5877ae8245e593e42fbe93b235b2/FLAGb10546ac1 [2020-11-28 07:40:54,043 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:40:54,044 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/sv-benchmarks/c/pthread-memsafety/fillarray.i [2020-11-28 07:40:54,070 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/bin/utaipan/data/a668c02df/e83e5877ae8245e593e42fbe93b235b2/FLAGb10546ac1 [2020-11-28 07:40:54,331 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/bin/utaipan/data/a668c02df/e83e5877ae8245e593e42fbe93b235b2 [2020-11-28 07:40:54,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:40:54,335 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:40:54,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:54,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:40:54,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:40:54,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:54" (1/1) ... [2020-11-28 07:40:54,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@132d0ae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:54, skipping insertion in model container [2020-11-28 07:40:54,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:54" (1/1) ... [2020-11-28 07:40:54,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:40:54,406 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:40:54,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:54,996 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) [2020-11-28 07:40:54,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@737259c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:54, skipping insertion in model container [2020-11-28 07:40:54,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:54,999 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-11-28 07:40:55,002 INFO L168 Benchmark]: Toolchain (without parser) took 664.70 ms. Allocated memory is still 92.3 MB. Free memory was 56.1 MB in the beginning and 66.4 MB in the end (delta: -10.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:55,004 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 92.3 MB. Free memory was 67.4 MB in the beginning and 67.4 MB in the end (delta: 30.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:55,006 INFO L168 Benchmark]: CACSL2BoogieTranslator took 662.14 ms. Allocated memory is still 92.3 MB. Free memory was 55.8 MB in the beginning and 66.8 MB in the end (delta: -11.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:55,008 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 92.3 MB. Free memory was 67.4 MB in the beginning and 67.4 MB in the end (delta: 30.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 662.14 ms. Allocated memory is still 92.3 MB. Free memory was 55.8 MB in the beginning and 66.8 MB in the end (delta: -11.0 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 [2020-11-28 07:40:57,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:40:57,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:40:57,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:40:57,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:40:57,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:40:57,379 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:40:57,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:40:57,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:40:57,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:40:57,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:40:57,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:40:57,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:40:57,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:40:57,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:40:57,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:40:57,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:40:57,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:40:57,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:40:57,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:40:57,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:40:57,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:40:57,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:40:57,434 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:40:57,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:40:57,437 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:40:57,438 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:40:57,439 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:40:57,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:40:57,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:40:57,441 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:40:57,442 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:40:57,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:40:57,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:40:57,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:40:57,449 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:40:57,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:40:57,450 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:40:57,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:40:57,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:40:57,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:40:57,454 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-11-28 07:40:57,518 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:40:57,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:40:57,520 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:40:57,520 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:40:57,521 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:40:57,521 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:40:57,521 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:40:57,521 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:40:57,522 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:40:57,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 07:40:57,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 07:40:57,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:40:57,524 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:40:57,524 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 07:40:57,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:40:57,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:40:57,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:40:57,525 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 07:40:57,525 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 07:40:57,526 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 07:40:57,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:40:57,526 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:40:57,526 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 07:40:57,526 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 07:40:57,526 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:40:57,527 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:40:57,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:40:57,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 07:40:57,527 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:40:57,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:40:57,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:40:57,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:40:57,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:40:57,529 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-28 07:40:57,529 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 07:40:57,529 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:40:57,529 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:40:57,530 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_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 317acdded5b2f05710e753bf8fd3c2308f1aec62 [2020-11-28 07:40:57,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:40:57,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:40:57,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:40:57,957 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:40:57,958 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:40:57,959 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/bin/utaipan/../../sv-benchmarks/c/pthread-memsafety/fillarray.i [2020-11-28 07:40:58,044 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/bin/utaipan/data/6b53a4925/5918ec14a3414b5ea94592d083d1dfd4/FLAGb88f5ce30 [2020-11-28 07:40:58,615 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:40:58,615 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/sv-benchmarks/c/pthread-memsafety/fillarray.i [2020-11-28 07:40:58,649 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/bin/utaipan/data/6b53a4925/5918ec14a3414b5ea94592d083d1dfd4/FLAGb88f5ce30 [2020-11-28 07:40:59,022 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/bin/utaipan/data/6b53a4925/5918ec14a3414b5ea94592d083d1dfd4 [2020-11-28 07:40:59,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:40:59,027 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:40:59,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:59,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:40:59,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:40:59,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:59" (1/1) ... [2020-11-28 07:40:59,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d92388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:59, skipping insertion in model container [2020-11-28 07:40:59,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:59" (1/1) ... [2020-11-28 07:40:59,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:40:59,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:40:59,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:59,623 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-11-28 07:40:59,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:40:59,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:59,669 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:40:59,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:59,941 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:40:59,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:59 WrapperNode [2020-11-28 07:40:59,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:59,944 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:59,944 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:40:59,944 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:40:59,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:59" (1/1) ... [2020-11-28 07:40:59,991 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:59" (1/1) ... [2020-11-28 07:41:00,024 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:41:00,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:41:00,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:41:00,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:41:00,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:59" (1/1) ... [2020-11-28 07:41:00,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:59" (1/1) ... [2020-11-28 07:41:00,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:59" (1/1) ... [2020-11-28 07:41:00,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:59" (1/1) ... [2020-11-28 07:41:00,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:59" (1/1) ... [2020-11-28 07:41:00,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:59" (1/1) ... [2020-11-28 07:41:00,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:59" (1/1) ... [2020-11-28 07:41:00,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:41:00,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:41:00,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:41:00,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:41:00,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/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 [2020-11-28 07:41:00,141 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-11-28 07:41:00,141 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-11-28 07:41:00,142 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-11-28 07:41:00,142 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-11-28 07:41:00,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:41:00,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:41:00,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-28 07:41:00,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 07:41:00,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:41:00,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:41:00,144 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-28 07:41:00,772 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:41:00,772 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 07:41:00,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:41:00 BoogieIcfgContainer [2020-11-28 07:41:00,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:41:00,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:41:00,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:41:00,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:41:00,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:40:59" (1/3) ... [2020-11-28 07:41:00,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33872915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:41:00, skipping insertion in model container [2020-11-28 07:41:00,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:59" (2/3) ... [2020-11-28 07:41:00,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33872915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:41:00, skipping insertion in model container [2020-11-28 07:41:00,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:41:00" (3/3) ... [2020-11-28 07:41:00,785 INFO L111 eAbstractionObserver]: Analyzing ICFG fillarray.i [2020-11-28 07:41:00,796 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:41:00,801 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-11-28 07:41:00,802 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 07:41:00,835 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,835 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,835 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,836 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,836 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,836 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,836 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,836 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,837 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,837 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,837 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,838 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,839 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,839 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,841 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,841 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,842 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,843 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,843 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,843 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,843 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,844 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,844 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,845 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,845 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,845 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,845 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,846 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,847 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,854 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,854 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,854 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,855 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,855 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,858 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,858 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,859 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,859 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,859 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,859 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,860 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,865 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,865 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,865 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,866 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,866 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,866 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,866 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:41:00,871 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-28 07:41:00,883 INFO L253 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2020-11-28 07:41:00,916 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:41:00,916 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 07:41:00,916 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:41:00,916 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:41:00,917 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:41:00,917 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:41:00,917 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:41:00,917 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:41:00,933 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 07:41:00,935 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 79 transitions, 168 flow [2020-11-28 07:41:00,937 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 79 transitions, 168 flow [2020-11-28 07:41:00,938 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 81 places, 79 transitions, 168 flow [2020-11-28 07:41:00,973 INFO L129 PetriNetUnfolder]: 4/82 cut-off events. [2020-11-28 07:41:00,973 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-28 07:41:00,978 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. [2020-11-28 07:41:00,981 INFO L116 LiptonReduction]: Number of co-enabled transitions 1404 [2020-11-28 07:41:01,469 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-11-28 07:41:01,825 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-11-28 07:41:02,092 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-11-28 07:41:03,196 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-11-28 07:41:03,708 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2020-11-28 07:41:05,005 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-11-28 07:41:05,210 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-11-28 07:41:05,872 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-11-28 07:41:06,252 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-11-28 07:41:07,536 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 104 DAG size of output: 103 [2020-11-28 07:41:08,271 WARN L193 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-28 07:41:08,449 INFO L131 LiptonReduction]: Checked pairs total: 3493 [2020-11-28 07:41:08,449 INFO L133 LiptonReduction]: Total number of compositions: 67 [2020-11-28 07:41:08,460 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 35 transitions, 80 flow [2020-11-28 07:41:08,503 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 615 states. [2020-11-28 07:41:08,505 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states. [2020-11-28 07:41:08,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2020-11-28 07:41:08,510 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:08,510 INFO L422 BasicCegarLoop]: trace histogram [1] [2020-11-28 07:41:08,511 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]=== [2020-11-28 07:41:08,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:08,516 INFO L82 PathProgramCache]: Analyzing trace with hash 303, now seen corresponding path program 1 times [2020-11-28 07:41:08,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:41:08,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [468664661] [2020-11-28 07:41:08,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/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 [2020-11-28 07:41:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:08,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 07:41:08,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:41:08,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:08,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:41:08,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:08,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [468664661] [2020-11-28 07:41:08,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:08,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2020-11-28 07:41:08,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735064967] [2020-11-28 07:41:08,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:41:08,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:41:08,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:41:08,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:41:08,660 INFO L87 Difference]: Start difference. First operand 615 states. Second operand 2 states. [2020-11-28 07:41:08,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:08,711 INFO L93 Difference]: Finished difference Result 613 states and 1733 transitions. [2020-11-28 07:41:08,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:41:08,712 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 1 [2020-11-28 07:41:08,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:08,735 INFO L225 Difference]: With dead ends: 613 [2020-11-28 07:41:08,735 INFO L226 Difference]: Without dead ends: 611 [2020-11-28 07:41:08,736 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 [2020-11-28 07:41:08,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2020-11-28 07:41:08,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 611. [2020-11-28 07:41:08,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-11-28 07:41:08,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1729 transitions. [2020-11-28 07:41:08,855 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1729 transitions. Word has length 1 [2020-11-28 07:41:08,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:08,856 INFO L481 AbstractCegarLoop]: Abstraction has 611 states and 1729 transitions. [2020-11-28 07:41:08,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:41:08,856 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1729 transitions. [2020-11-28 07:41:08,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-11-28 07:41:08,856 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:08,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2020-11-28 07:41:09,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 07:41:09,060 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]=== [2020-11-28 07:41:09,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:09,061 INFO L82 PathProgramCache]: Analyzing trace with hash 9464, now seen corresponding path program 1 times [2020-11-28 07:41:09,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:41:09,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1844261967] [2020-11-28 07:41:09,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/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 [2020-11-28 07:41:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:09,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:41:09,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:41:09,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:09,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:41:09,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:09,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1844261967] [2020-11-28 07:41:09,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:09,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2020-11-28 07:41:09,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425094261] [2020-11-28 07:41:09,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:41:09,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:41:09,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:41:09,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:41:09,262 INFO L87 Difference]: Start difference. First operand 611 states and 1729 transitions. Second operand 3 states. [2020-11-28 07:41:09,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:09,429 INFO L93 Difference]: Finished difference Result 610 states and 1728 transitions. [2020-11-28 07:41:09,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:09,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2020-11-28 07:41:09,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:09,439 INFO L225 Difference]: With dead ends: 610 [2020-11-28 07:41:09,439 INFO L226 Difference]: Without dead ends: 609 [2020-11-28 07:41:09,439 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 [2020-11-28 07:41:09,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2020-11-28 07:41:09,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 609. [2020-11-28 07:41:09,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 609 states. [2020-11-28 07:41:09,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 1727 transitions. [2020-11-28 07:41:09,489 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 1727 transitions. Word has length 2 [2020-11-28 07:41:09,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:09,489 INFO L481 AbstractCegarLoop]: Abstraction has 609 states and 1727 transitions. [2020-11-28 07:41:09,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:41:09,492 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 1727 transitions. [2020-11-28 07:41:09,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-28 07:41:09,492 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:09,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-28 07:41:09,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 07:41:09,711 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]=== [2020-11-28 07:41:09,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:09,711 INFO L82 PathProgramCache]: Analyzing trace with hash 295877, now seen corresponding path program 1 times [2020-11-28 07:41:09,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:41:09,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [728994529] [2020-11-28 07:41:09,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/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 [2020-11-28 07:41:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:09,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:41:09,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:41:09,893 INFO L350 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2020-11-28 07:41:09,893 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 [2020-11-28 07:41:09,894 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 07:41:09,904 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 07:41:09,908 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. [2020-11-28 07:41:09,908 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:12, output treesize:16 [2020-11-28 07:41:09,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:09,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:41:09,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:09,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [728994529] [2020-11-28 07:41:09,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:09,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2020-11-28 07:41:09,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496632559] [2020-11-28 07:41:09,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:41:09,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:41:09,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:41:09,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:41:09,941 INFO L87 Difference]: Start difference. First operand 609 states and 1727 transitions. Second operand 3 states. [2020-11-28 07:41:10,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:10,039 INFO L93 Difference]: Finished difference Result 601 states and 1711 transitions. [2020-11-28 07:41:10,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:10,041 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-11-28 07:41:10,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:10,048 INFO L225 Difference]: With dead ends: 601 [2020-11-28 07:41:10,048 INFO L226 Difference]: Without dead ends: 601 [2020-11-28 07:41:10,049 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 [2020-11-28 07:41:10,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-11-28 07:41:10,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2020-11-28 07:41:10,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 601 states. [2020-11-28 07:41:10,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 1711 transitions. [2020-11-28 07:41:10,077 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 1711 transitions. Word has length 3 [2020-11-28 07:41:10,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:10,078 INFO L481 AbstractCegarLoop]: Abstraction has 601 states and 1711 transitions. [2020-11-28 07:41:10,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:41:10,078 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 1711 transitions. [2020-11-28 07:41:10,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-28 07:41:10,078 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:10,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-28 07:41:10,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 07:41:10,293 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]=== [2020-11-28 07:41:10,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:10,294 INFO L82 PathProgramCache]: Analyzing trace with hash 295878, now seen corresponding path program 1 times [2020-11-28 07:41:10,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:41:10,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1028542756] [2020-11-28 07:41:10,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/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 [2020-11-28 07:41:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:10,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:41:10,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:41:10,482 INFO L350 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-11-28 07:41:10,483 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 [2020-11-28 07:41:10,483 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 07:41:10,549 INFO L625 ElimStorePlain]: treesize reduction 10, result has 72.2 percent of original size [2020-11-28 07:41:10,560 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. [2020-11-28 07:41:10,560 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:16, output treesize:14 [2020-11-28 07:41:10,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:10,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:41:10,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:10,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1028542756] [2020-11-28 07:41:10,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:10,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2020-11-28 07:41:10,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096026675] [2020-11-28 07:41:10,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:41:10,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:41:10,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:41:10,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:41:10,620 INFO L87 Difference]: Start difference. First operand 601 states and 1711 transitions. Second operand 4 states. [2020-11-28 07:41:10,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:10,784 INFO L93 Difference]: Finished difference Result 593 states and 1695 transitions. [2020-11-28 07:41:10,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:10,786 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2020-11-28 07:41:10,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:10,791 INFO L225 Difference]: With dead ends: 593 [2020-11-28 07:41:10,791 INFO L226 Difference]: Without dead ends: 593 [2020-11-28 07:41:10,792 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 [2020-11-28 07:41:10,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-11-28 07:41:10,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2020-11-28 07:41:10,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2020-11-28 07:41:10,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 1695 transitions. [2020-11-28 07:41:10,835 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 1695 transitions. Word has length 3 [2020-11-28 07:41:10,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:10,835 INFO L481 AbstractCegarLoop]: Abstraction has 593 states and 1695 transitions. [2020-11-28 07:41:10,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:41:10,836 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 1695 transitions. [2020-11-28 07:41:10,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:41:10,836 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:10,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:41:11,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-28 07:41:11,053 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]=== [2020-11-28 07:41:11,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:11,053 INFO L82 PathProgramCache]: Analyzing trace with hash 284343408, now seen corresponding path program 1 times [2020-11-28 07:41:11,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:41:11,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [501348934] [2020-11-28 07:41:11,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/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 [2020-11-28 07:41:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:11,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:41:11,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:41:11,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:11,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:41:11,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:11,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [501348934] [2020-11-28 07:41:11,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:11,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2020-11-28 07:41:11,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504328557] [2020-11-28 07:41:11,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:41:11,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:41:11,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:41:11,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:41:11,183 INFO L87 Difference]: Start difference. First operand 593 states and 1695 transitions. Second operand 3 states. [2020-11-28 07:41:11,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:11,201 INFO L93 Difference]: Finished difference Result 529 states and 1503 transitions. [2020-11-28 07:41:11,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:11,203 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-28 07:41:11,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:11,207 INFO L225 Difference]: With dead ends: 529 [2020-11-28 07:41:11,207 INFO L226 Difference]: Without dead ends: 529 [2020-11-28 07:41:11,208 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 [2020-11-28 07:41:11,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-11-28 07:41:11,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 529. [2020-11-28 07:41:11,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 529 states. [2020-11-28 07:41:11,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 1503 transitions. [2020-11-28 07:41:11,229 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 1503 transitions. Word has length 5 [2020-11-28 07:41:11,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:11,230 INFO L481 AbstractCegarLoop]: Abstraction has 529 states and 1503 transitions. [2020-11-28 07:41:11,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:41:11,230 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 1503 transitions. [2020-11-28 07:41:11,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:41:11,231 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:11,231 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:41:11,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-28 07:41:11,447 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]=== [2020-11-28 07:41:11,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:11,448 INFO L82 PathProgramCache]: Analyzing trace with hash 284343377, now seen corresponding path program 1 times [2020-11-28 07:41:11,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:41:11,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424948237] [2020-11-28 07:41:11,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/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 [2020-11-28 07:41:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:11,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:41:11,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:41:11,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:11,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:41:11,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:11,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424948237] [2020-11-28 07:41:11,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:11,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2020-11-28 07:41:11,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991155933] [2020-11-28 07:41:11,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:41:11,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:41:11,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:41:11,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:41:11,549 INFO L87 Difference]: Start difference. First operand 529 states and 1503 transitions. Second operand 3 states. [2020-11-28 07:41:11,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:11,571 INFO L93 Difference]: Finished difference Result 465 states and 1311 transitions. [2020-11-28 07:41:11,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:11,573 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-28 07:41:11,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:11,577 INFO L225 Difference]: With dead ends: 465 [2020-11-28 07:41:11,577 INFO L226 Difference]: Without dead ends: 465 [2020-11-28 07:41:11,578 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 [2020-11-28 07:41:11,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2020-11-28 07:41:11,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2020-11-28 07:41:11,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-11-28 07:41:11,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 1311 transitions. [2020-11-28 07:41:11,596 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 1311 transitions. Word has length 5 [2020-11-28 07:41:11,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:11,596 INFO L481 AbstractCegarLoop]: Abstraction has 465 states and 1311 transitions. [2020-11-28 07:41:11,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:41:11,596 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 1311 transitions. [2020-11-28 07:41:11,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:41:11,597 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:11,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:41:11,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-28 07:41:11,816 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]=== [2020-11-28 07:41:11,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:11,816 INFO L82 PathProgramCache]: Analyzing trace with hash 284343410, now seen corresponding path program 1 times [2020-11-28 07:41:11,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:41:11,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045457160] [2020-11-28 07:41:11,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/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 [2020-11-28 07:41:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:11,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 07:41:11,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:41:11,992 INFO L350 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2020-11-28 07:41:11,992 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 [2020-11-28 07:41:11,994 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 07:41:12,007 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 07:41:12,021 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. [2020-11-28 07:41:12,021 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:21, output treesize:20 [2020-11-28 07:41:12,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:12,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:41:12,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:12,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045457160] [2020-11-28 07:41:12,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:12,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2020-11-28 07:41:12,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844632579] [2020-11-28 07:41:12,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:41:12,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:41:12,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:41:12,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:41:12,124 INFO L87 Difference]: Start difference. First operand 465 states and 1311 transitions. Second operand 4 states. [2020-11-28 07:41:12,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:12,229 INFO L93 Difference]: Finished difference Result 401 states and 1119 transitions. [2020-11-28 07:41:12,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:12,230 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-28 07:41:12,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:12,234 INFO L225 Difference]: With dead ends: 401 [2020-11-28 07:41:12,234 INFO L226 Difference]: Without dead ends: 401 [2020-11-28 07:41:12,235 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 [2020-11-28 07:41:12,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2020-11-28 07:41:12,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2020-11-28 07:41:12,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-11-28 07:41:12,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1119 transitions. [2020-11-28 07:41:12,250 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1119 transitions. Word has length 5 [2020-11-28 07:41:12,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:12,250 INFO L481 AbstractCegarLoop]: Abstraction has 401 states and 1119 transitions. [2020-11-28 07:41:12,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:41:12,250 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1119 transitions. [2020-11-28 07:41:12,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:41:12,252 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:12,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:41:12,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-28 07:41:12,466 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]=== [2020-11-28 07:41:12,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:12,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1621862996, now seen corresponding path program 1 times [2020-11-28 07:41:12,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:41:12,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [982849065] [2020-11-28 07:41:12,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/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 [2020-11-28 07:41:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:12,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 07:41:12,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:41:12,594 INFO L350 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2020-11-28 07:41:12,594 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 [2020-11-28 07:41:12,595 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 07:41:12,615 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 07:41:12,618 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. [2020-11-28 07:41:12,618 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:21, output treesize:20 [2020-11-28 07:41:12,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:12,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:41:12,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:12,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [982849065] [2020-11-28 07:41:12,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:12,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2020-11-28 07:41:12,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64951174] [2020-11-28 07:41:12,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 07:41:12,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:41:12,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 07:41:12,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:41:12,817 INFO L87 Difference]: Start difference. First operand 401 states and 1119 transitions. Second operand 8 states. [2020-11-28 07:41:13,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:13,337 INFO L93 Difference]: Finished difference Result 630 states and 1760 transitions. [2020-11-28 07:41:13,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:41:13,338 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2020-11-28 07:41:13,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:13,344 INFO L225 Difference]: With dead ends: 630 [2020-11-28 07:41:13,344 INFO L226 Difference]: Without dead ends: 630 [2020-11-28 07:41:13,344 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 [2020-11-28 07:41:13,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2020-11-28 07:41:13,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 551. [2020-11-28 07:41:13,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551 states. [2020-11-28 07:41:13,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 1618 transitions. [2020-11-28 07:41:13,366 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 1618 transitions. Word has length 7 [2020-11-28 07:41:13,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:13,367 INFO L481 AbstractCegarLoop]: Abstraction has 551 states and 1618 transitions. [2020-11-28 07:41:13,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 07:41:13,367 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 1618 transitions. [2020-11-28 07:41:13,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:41:13,369 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:13,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:41:13,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-28 07:41:13,589 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]=== [2020-11-28 07:41:13,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:13,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1621862994, now seen corresponding path program 1 times [2020-11-28 07:41:13,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:41:13,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [85980586] [2020-11-28 07:41:13,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/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 [2020-11-28 07:41:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:41:13,653 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:41:13,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:41:13,679 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:41:13,705 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-28 07:41:13,706 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:41:13,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-28 07:41:13,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:41:13 BasicIcfg [2020-11-28 07:41:13,948 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:41:13,949 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:41:13,949 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:41:13,949 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:41:13,950 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:41:00" (3/4) ... [2020-11-28 07:41:13,951 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:41:14,015 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8edb5c4c-e3c6-4d84-a973-13d112bd8a95/bin/utaipan/witness.graphml [2020-11-28 07:41:14,015 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:41:14,020 INFO L168 Benchmark]: Toolchain (without parser) took 14989.16 ms. Allocated memory was 65.0 MB in the beginning and 121.6 MB in the end (delta: 56.6 MB). Free memory was 43.1 MB in the beginning and 45.2 MB in the end (delta: -2.1 MB). Peak memory consumption was 53.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:14,022 INFO L168 Benchmark]: CDTParser took 0.54 ms. Allocated memory is still 65.0 MB. Free memory was 46.7 MB in the beginning and 46.6 MB in the end (delta: 84.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:41:14,022 INFO L168 Benchmark]: CACSL2BoogieTranslator took 913.54 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 42.9 MB in the beginning and 53.5 MB in the end (delta: -10.5 MB). Peak memory consumption was 21.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:14,023 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.51 ms. Allocated memory is still 81.8 MB. Free memory was 53.1 MB in the beginning and 51.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:14,024 INFO L168 Benchmark]: Boogie Preprocessor took 39.88 ms. Allocated memory is still 81.8 MB. Free memory was 51.2 MB in the beginning and 49.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:14,024 INFO L168 Benchmark]: RCFGBuilder took 708.70 ms. Allocated memory is still 81.8 MB. Free memory was 49.3 MB in the beginning and 47.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:14,026 INFO L168 Benchmark]: TraceAbstraction took 13172.53 ms. Allocated memory was 81.8 MB in the beginning and 121.6 MB in the end (delta: 39.8 MB). Free memory was 46.4 MB in the beginning and 48.4 MB in the end (delta: -2.0 MB). Peak memory consumption was 37.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:14,026 INFO L168 Benchmark]: Witness Printer took 66.44 ms. Allocated memory is still 121.6 MB. Free memory was 48.4 MB in the beginning and 45.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:14,030 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 ms. Allocated memory is still 65.0 MB. Free memory was 46.7 MB in the beginning and 46.6 MB in the end (delta: 84.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 913.54 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 42.9 MB in the beginning and 53.5 MB in the end (delta: -10.5 MB). Peak memory consumption was 21.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 80.51 ms. Allocated memory is still 81.8 MB. Free memory was 53.1 MB in the beginning and 51.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.88 ms. Allocated memory is still 81.8 MB. Free memory was 51.2 MB in the beginning and 49.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 708.70 ms. Allocated memory is still 81.8 MB. Free memory was 49.3 MB in the beginning and 47.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13172.53 ms. Allocated memory was 81.8 MB in the beginning and 121.6 MB in the end (delta: 39.8 MB). Free memory was 46.4 MB in the beginning and 48.4 MB in the end (delta: -2.0 MB). Peak memory consumption was 37.4 MB. Max. memory is 16.1 GB. * Witness Printer took 66.44 ms. Allocated memory is still 121.6 MB. Free memory was 48.4 MB in the beginning and 45.2 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: 1.0s, 150 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 7.5s, 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: 13.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.5s, HoareTripleCheckerStatistics: 201 SDtfs, 238 SDslu, 150 SDs, 0 SdLazy, 183 SolverSat, 2 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 0.8s 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: 0.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 79 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s 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...