./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI --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 932f76685ed1816d93a388d0ab1addae9c51483a ............................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI --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 932f76685ed1816d93a388d0ab1addae9c51483a ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-7b2dab5 [2021-10-11 02:29:04,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:29:04,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:29:04,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:29:04,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:29:04,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:29:04,992 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:29:04,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:29:04,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:29:05,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:29:05,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:29:05,011 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:29:05,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:29:05,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:29:05,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:29:05,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:29:05,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:29:05,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:29:05,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:29:05,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:29:05,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:29:05,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:29:05,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:29:05,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:29:05,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:29:05,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:29:05,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:29:05,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:29:05,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:29:05,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:29:05,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:29:05,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:29:05,064 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:29:05,066 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:29:05,068 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:29:05,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:29:05,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:29:05,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:29:05,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:29:05,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:29:05,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:29:05,076 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-11 02:29:05,135 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:29:05,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:29:05,137 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:29:05,138 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:29:05,138 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:29:05,138 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:29:05,139 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:29:05,139 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:29:05,139 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:29:05,139 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:29:05,141 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:29:05,141 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:29:05,142 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:29:05,142 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:29:05,142 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:29:05,143 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:29:05,143 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:29:05,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:29:05,144 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:29:05,144 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:29:05,145 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:29:05,145 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:29:05,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:29:05,145 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:29:05,146 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:29:05,146 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:29:05,148 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:29:05,148 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:29:05,148 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:29:05,149 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:29:05,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:29:05,150 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:29:05,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:29:05,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:29:05,151 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:29:05,151 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:29:05,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:29:05,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:29:05,152 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:29:05,152 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 932f76685ed1816d93a388d0ab1addae9c51483a [2021-10-11 02:29:05,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:29:05,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:29:05,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:29:05,492 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:29:05,494 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:29:05,494 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2021-10-11 02:29:05,584 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI/data/83305e909/012ca94f763746d4b770812a950e9808/FLAG4b0192ce4 [2021-10-11 02:29:06,133 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:29:06,136 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2021-10-11 02:29:06,148 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI/data/83305e909/012ca94f763746d4b770812a950e9808/FLAG4b0192ce4 [2021-10-11 02:29:06,502 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI/data/83305e909/012ca94f763746d4b770812a950e9808 [2021-10-11 02:29:06,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:29:06,508 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:29:06,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:06,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:29:06,514 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:29:06,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:06" (1/1) ... [2021-10-11 02:29:06,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e71183e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:06, skipping insertion in model container [2021-10-11 02:29:06,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:06" (1/1) ... [2021-10-11 02:29:06,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:29:06,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:29:06,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:06,819 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-11 02:29:06,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@31e8ca8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:06, skipping insertion in model container [2021-10-11 02:29:06,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:06,822 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-11 02:29:06,827 INFO L168 Benchmark]: Toolchain (without parser) took 315.24 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 62.4 MB in the beginning and 94.1 MB in the end (delta: -31.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:06,829 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 96.5 MB. Free memory was 49.0 MB in the beginning and 48.9 MB in the end (delta: 76.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:06,832 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.25 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 62.2 MB in the beginning and 94.1 MB in the end (delta: -32.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:06,836 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 96.5 MB. Free memory was 49.0 MB in the beginning and 48.9 MB in the end (delta: 76.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 312.25 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 62.2 MB in the beginning and 94.1 MB in the end (delta: -32.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 15]: 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 0.2.0-7b2dab5 [2021-10-11 02:29:09,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:29:09,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:29:09,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:29:09,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:29:09,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:29:09,332 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:29:09,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:29:09,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:29:09,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:29:09,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:29:09,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:29:09,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:29:09,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:29:09,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:29:09,362 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:29:09,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:29:09,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:29:09,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:29:09,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:29:09,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:29:09,381 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:29:09,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:29:09,386 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:29:09,395 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:29:09,395 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:29:09,396 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:29:09,398 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:29:09,398 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:29:09,399 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:29:09,400 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:29:09,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:29:09,403 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:29:09,404 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:29:09,405 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:29:09,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:29:09,406 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:29:09,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:29:09,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:29:09,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:29:09,410 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:29:09,414 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-11 02:29:09,459 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:29:09,459 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:29:09,461 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:29:09,461 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:29:09,461 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:29:09,462 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:29:09,462 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:29:09,462 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:29:09,463 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:29:09,464 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:29:09,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:29:09,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:29:09,466 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:29:09,466 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:29:09,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:29:09,466 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:29:09,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:29:09,467 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:29:09,467 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:29:09,467 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:29:09,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:29:09,468 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:29:09,468 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:29:09,468 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:29:09,468 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:29:09,468 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:29:09,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:29:09,469 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:29:09,469 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:29:09,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:29:09,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:29:09,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:29:09,470 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:29:09,470 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:29:09,471 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:29:09,471 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:29:09,471 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 932f76685ed1816d93a388d0ab1addae9c51483a [2021-10-11 02:29:09,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:29:09,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:29:09,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:29:09,896 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:29:09,896 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:29:09,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2021-10-11 02:29:09,974 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI/data/1b74d9a4f/e25cfc7454034e358324757f149a5720/FLAG5f6cc7b8e [2021-10-11 02:29:10,569 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:29:10,570 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2021-10-11 02:29:10,576 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI/data/1b74d9a4f/e25cfc7454034e358324757f149a5720/FLAG5f6cc7b8e [2021-10-11 02:29:10,905 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI/data/1b74d9a4f/e25cfc7454034e358324757f149a5720 [2021-10-11 02:29:10,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:29:10,909 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:29:10,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:10,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:29:10,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:29:10,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:10" (1/1) ... [2021-10-11 02:29:10,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@739fa94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:10, skipping insertion in model container [2021-10-11 02:29:10,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:10" (1/1) ... [2021-10-11 02:29:10,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:29:10,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:29:11,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:11,094 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-11 02:29:11,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:29:11,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:11,111 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:29:11,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:11,152 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:29:11,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:11 WrapperNode [2021-10-11 02:29:11,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:11,154 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:11,154 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:29:11,154 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:29:11,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:11" (1/1) ... [2021-10-11 02:29:11,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:11" (1/1) ... [2021-10-11 02:29:11,245 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:11,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:29:11,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:29:11,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:29:11,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:11" (1/1) ... [2021-10-11 02:29:11,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:11" (1/1) ... [2021-10-11 02:29:11,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:11" (1/1) ... [2021-10-11 02:29:11,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:11" (1/1) ... [2021-10-11 02:29:11,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:11" (1/1) ... [2021-10-11 02:29:11,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:11" (1/1) ... [2021-10-11 02:29:11,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:11" (1/1) ... [2021-10-11 02:29:11,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:29:11,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:29:11,305 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:29:11,305 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:29:11,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:11" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:29:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-11 02:29:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 02:29:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:29:11,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:29:11,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:29:11,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:29:11,784 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:29:11,784 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:29:11,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:11 BoogieIcfgContainer [2021-10-11 02:29:11,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:29:11,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:29:11,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:29:11,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:29:11,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:29:10" (1/3) ... [2021-10-11 02:29:11,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dfc447a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:11, skipping insertion in model container [2021-10-11 02:29:11,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:11" (2/3) ... [2021-10-11 02:29:11,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dfc447a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:11, skipping insertion in model container [2021-10-11 02:29:11,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:11" (3/3) ... [2021-10-11 02:29:11,794 INFO L111 eAbstractionObserver]: Analyzing ICFG naturalNumbers1.c [2021-10-11 02:29:11,807 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:29:11,810 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-10-11 02:29:11,840 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-11 02:29:11,867 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:29:11,867 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 02:29:11,867 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:29:11,868 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:29:11,868 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:29:11,868 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:29:11,868 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:29:11,868 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:29:11,906 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2021-10-11 02:29:11,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:29:11,913 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:11,914 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:29:11,915 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:29:11,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:11,923 INFO L82 PathProgramCache]: Analyzing trace with hash 925797, now seen corresponding path program 1 times [2021-10-11 02:29:11,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:29:11,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1603260962] [2021-10-11 02:29:11,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:29:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:12,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:29:12,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:12,161 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-11 02:29:12,163 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:29:12,175 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:12,178 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:29:12,178 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-10-11 02:29:12,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:12,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:29:12,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1603260962] [2021-10-11 02:29:12,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:12,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:29:12,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827882390] [2021-10-11 02:29:12,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:12,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:29:12,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:12,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:12,230 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 3 states. [2021-10-11 02:29:12,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:12,290 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2021-10-11 02:29:12,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:12,293 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-10-11 02:29:12,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:12,303 INFO L225 Difference]: With dead ends: 12 [2021-10-11 02:29:12,303 INFO L226 Difference]: Without dead ends: 10 [2021-10-11 02:29:12,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:12,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-11 02:29:12,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-11 02:29:12,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-11 02:29:12,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-10-11 02:29:12,339 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 4 [2021-10-11 02:29:12,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:12,339 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-11 02:29:12,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:12,340 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-10-11 02:29:12,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:29:12,340 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:12,341 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:29:12,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:29:12,555 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:29:12,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:12,556 INFO L82 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2021-10-11 02:29:12,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:29:12,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447001857] [2021-10-11 02:29:12,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:29:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:12,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 02:29:12,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:12,651 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-11 02:29:12,652 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:29:12,661 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:12,663 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:29:12,663 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:14 [2021-10-11 02:29:12,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:12,682 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:29:12,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447001857] [2021-10-11 02:29:12,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:12,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:29:12,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413396789] [2021-10-11 02:29:12,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:12,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:29:12,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:12,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:12,686 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 3 states. [2021-10-11 02:29:12,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:12,734 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2021-10-11 02:29:12,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:12,735 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-10-11 02:29:12,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:12,736 INFO L225 Difference]: With dead ends: 16 [2021-10-11 02:29:12,736 INFO L226 Difference]: Without dead ends: 16 [2021-10-11 02:29:12,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:12,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-11 02:29:12,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 12. [2021-10-11 02:29:12,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-11 02:29:12,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-10-11 02:29:12,741 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 4 [2021-10-11 02:29:12,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:12,742 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-10-11 02:29:12,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:12,742 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-10-11 02:29:12,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:29:12,743 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:12,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:12,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 02:29:12,961 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:29:12,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:12,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1810601999, now seen corresponding path program 1 times [2021-10-11 02:29:12,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:29:12,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [619419777] [2021-10-11 02:29:12,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:29:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:13,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-11 02:29:13,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:13,094 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:13,095 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 13 [2021-10-11 02:29:13,103 INFO L547 ElimStorePlain]: Start of recursive call 2: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2021-10-11 02:29:13,106 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:13,109 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2021-10-11 02:29:13,109 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:9 [2021-10-11 02:29:13,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:13,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:29:13,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [619419777] [2021-10-11 02:29:13,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:13,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:29:13,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589662631] [2021-10-11 02:29:13,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:29:13,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:29:13,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:29:13,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:13,133 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 4 states. [2021-10-11 02:29:13,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:13,214 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2021-10-11 02:29:13,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:13,215 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 02:29:13,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:13,215 INFO L225 Difference]: With dead ends: 13 [2021-10-11 02:29:13,215 INFO L226 Difference]: Without dead ends: 13 [2021-10-11 02:29:13,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:29:13,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-11 02:29:13,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-11 02:29:13,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-11 02:29:13,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-10-11 02:29:13,219 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 7 [2021-10-11 02:29:13,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:13,219 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-11 02:29:13,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:13,219 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-10-11 02:29:13,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:29:13,220 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:13,220 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-10-11 02:29:13,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2021-10-11 02:29:13,434 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:29:13,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:13,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1810603474, now seen corresponding path program 1 times [2021-10-11 02:29:13,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:29:13,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1039410505] [2021-10-11 02:29:13,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:29:13,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:13,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-11 02:29:13,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:13,493 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-11 02:29:13,494 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:29:13,503 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:13,504 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:29:13,505 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:14 [2021-10-11 02:29:13,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:13,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:13,709 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2021-10-11 02:29:13,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:13,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1039410505] [2021-10-11 02:29:13,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [802158171] [2021-10-11 02:29:13,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt [2021-10-11 02:29:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:13,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-11 02:29:13,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:13,954 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-11 02:29:13,955 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:29:13,963 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:13,964 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:29:13,965 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:14 [2021-10-11 02:29:13,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:13,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:14,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:14,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165122633] [2021-10-11 02:29:14,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:14,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:14,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-11 02:29:14,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:14,094 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-11 02:29:14,095 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:29:14,105 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:14,107 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:29:14,110 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:14 [2021-10-11 02:29:14,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:14,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:14,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:14,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-11 02:29:14,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3, 3, 3, 3] total 5 [2021-10-11 02:29:14,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264814198] [2021-10-11 02:29:14,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:29:14,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:29:14,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:29:14,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:29:14,145 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 6 states. [2021-10-11 02:29:14,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:14,243 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-10-11 02:29:14,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:29:14,246 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2021-10-11 02:29:14,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:14,247 INFO L225 Difference]: With dead ends: 22 [2021-10-11 02:29:14,247 INFO L226 Difference]: Without dead ends: 22 [2021-10-11 02:29:14,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:29:14,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-11 02:29:14,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 15. [2021-10-11 02:29:14,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-11 02:29:14,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-10-11 02:29:14,250 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 7 [2021-10-11 02:29:14,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:14,251 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-11 02:29:14,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:29:14,251 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-10-11 02:29:14,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:29:14,251 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:14,252 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:14,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3,6 cvc4 --incremental --print-success --lang smt,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:14,853 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:29:14,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:14,853 INFO L82 PathProgramCache]: Analyzing trace with hash -806218973, now seen corresponding path program 1 times [2021-10-11 02:29:14,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:29:14,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2121412504] [2021-10-11 02:29:14,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:29:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:14,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-11 02:29:14,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:15,013 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:15,014 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 15 [2021-10-11 02:29:15,021 INFO L547 ElimStorePlain]: Start of recursive call 2: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2021-10-11 02:29:15,024 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:15,025 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2021-10-11 02:29:15,027 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:9 [2021-10-11 02:29:15,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:15,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:15,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:15,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2121412504] [2021-10-11 02:29:15,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [984582508] [2021-10-11 02:29:15,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt [2021-10-11 02:29:15,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:15,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:29:15,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:15,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:29:15,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:29:15,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:29:15,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 10 [2021-10-11 02:29:15,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725635363] [2021-10-11 02:29:15,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:29:15,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:29:15,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:29:15,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:29:15,402 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 4 states. [2021-10-11 02:29:15,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:15,431 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2021-10-11 02:29:15,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:15,432 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-10-11 02:29:15,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:15,433 INFO L225 Difference]: With dead ends: 14 [2021-10-11 02:29:15,433 INFO L226 Difference]: Without dead ends: 11 [2021-10-11 02:29:15,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:29:15,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-11 02:29:15,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-11 02:29:15,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-11 02:29:15,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-10-11 02:29:15,435 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 10 [2021-10-11 02:29:15,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:15,435 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-10-11 02:29:15,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:15,436 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-10-11 02:29:15,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:29:15,436 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:15,436 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2021-10-11 02:29:15,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt,8 mathsat -unsat_core_generation=3 [2021-10-11 02:29:15,840 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:29:15,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:15,841 INFO L82 PathProgramCache]: Analyzing trace with hash -806217498, now seen corresponding path program 2 times [2021-10-11 02:29:15,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:29:15,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [379375033] [2021-10-11 02:29:15,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:29:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:29:15,902 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:29:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:29:15,933 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:29:15,954 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-11 02:29:15,954 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:29:16,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2021-10-11 02:29:16,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:29:16 BoogieIcfgContainer [2021-10-11 02:29:16,180 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:29:16,180 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:29:16,181 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:29:16,181 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:29:16,181 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:11" (3/4) ... [2021-10-11 02:29:16,184 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:29:16,228 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b26de93-be4d-479d-bfd5-345503462491/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:29:16,228 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:29:16,230 INFO L168 Benchmark]: Toolchain (without parser) took 5320.01 ms. Allocated memory was 60.8 MB in the beginning and 81.8 MB in the end (delta: 21.0 MB). Free memory was 41.5 MB in the beginning and 62.2 MB in the end (delta: -20.7 MB). Peak memory consumption was 41.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:16,230 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 60.8 MB. Free memory is still 42.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:16,231 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.44 ms. Allocated memory is still 60.8 MB. Free memory was 41.2 MB in the beginning and 30.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:16,231 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.62 ms. Allocated memory is still 60.8 MB. Free memory was 30.9 MB in the beginning and 44.1 MB in the end (delta: -13.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:16,232 INFO L168 Benchmark]: Boogie Preprocessor took 55.99 ms. Allocated memory is still 60.8 MB. Free memory was 44.1 MB in the beginning and 42.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:16,232 INFO L168 Benchmark]: RCFGBuilder took 481.96 ms. Allocated memory is still 60.8 MB. Free memory was 42.9 MB in the beginning and 30.7 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:16,233 INFO L168 Benchmark]: TraceAbstraction took 4392.80 ms. Allocated memory was 60.8 MB in the beginning and 81.8 MB in the end (delta: 21.0 MB). Free memory was 30.3 MB in the beginning and 22.0 MB in the end (delta: 8.2 MB). Peak memory consumption was 29.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:16,233 INFO L168 Benchmark]: Witness Printer took 48.15 ms. Allocated memory is still 81.8 MB. Free memory was 22.0 MB in the beginning and 62.2 MB in the end (delta: -40.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:16,236 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 60.8 MB. Free memory is still 42.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 242.44 ms. Allocated memory is still 60.8 MB. Free memory was 41.2 MB in the beginning and 30.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 91.62 ms. Allocated memory is still 60.8 MB. Free memory was 30.9 MB in the beginning and 44.1 MB in the end (delta: -13.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.99 ms. Allocated memory is still 60.8 MB. Free memory was 44.1 MB in the beginning and 42.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 481.96 ms. Allocated memory is still 60.8 MB. Free memory was 42.9 MB in the beginning and 30.7 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4392.80 ms. Allocated memory was 60.8 MB in the beginning and 81.8 MB in the end (delta: 21.0 MB). Free memory was 30.3 MB in the beginning and 22.0 MB in the end (delta: 8.2 MB). Peak memory consumption was 29.8 MB. Max. memory is 16.1 GB. * Witness Printer took 48.15 ms. Allocated memory is still 81.8 MB. Free memory was 22.0 MB in the beginning and 62.2 MB in the end (delta: -40.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L13] char numbers[] = {0,1,2,3,4,5,6,7,8,9}; [L2] int i = 0; [L3] COND TRUE i < 10 [L4] EXPR numbers[i] [L4] COND FALSE !(numbers[i] <= 0) [L7] i++ [L3] COND TRUE i < 10 [L4] EXPR numbers[i] [L4] COND FALSE !(numbers[i] <= 0) [L7] i++ [L3] COND TRUE i < 10 [L4] numbers[i] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.2s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 26 SDslu, 40 SDs, 0 SdLazy, 60 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 75 ConstructedInterpolants, 3 QuantifiedInterpolants, 7728 SizeOfPredicates, 38 NumberOfNonLiveVariables, 310 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 3/21 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...