./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE --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 c03aa9fd4feebd47970076773e3fcb11c7b82646fa9d57d8ea4dde0614545dfa ............................................................................................................................................. 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_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE --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 c03aa9fd4feebd47970076773e3fcb11c7b82646fa9d57d8ea4dde0614545dfa .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:33:20,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:33:20,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:33:20,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:33:20,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:33:20,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:33:20,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:33:20,280 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:33:20,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:33:20,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:33:20,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:33:20,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:33:20,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:33:20,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:33:20,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:33:20,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:33:20,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:33:20,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:33:20,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:33:20,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:33:20,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:33:20,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:33:20,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:33:20,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:33:20,317 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:33:20,317 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:33:20,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:33:20,320 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:33:20,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:33:20,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:33:20,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:33:20,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:33:20,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:33:20,327 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:33:20,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:33:20,329 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:33:20,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:33:20,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:33:20,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:33:20,332 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:33:20,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:33:20,334 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-24 10:33:20,363 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:33:20,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:33:20,364 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:33:20,365 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:33:20,365 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:33:20,365 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:33:20,366 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:33:20,366 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:33:20,366 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:33:20,367 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:33:20,367 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:33:20,367 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:33:20,367 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:33:20,368 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:33:20,368 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:33:20,369 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-24 10:33:20,369 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-24 10:33:20,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:33:20,370 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:33:20,370 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 10:33:20,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:33:20,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:33:20,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:33:20,371 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-24 10:33:20,372 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-24 10:33:20,372 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-24 10:33:20,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:33:20,373 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:33:20,373 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:33:20,373 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:33:20,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:33:20,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:33:20,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:33:20,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:33:20,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:33:20,375 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:33:20,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:33:20,376 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:33:20,376 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:33:20,376 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_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c03aa9fd4feebd47970076773e3fcb11c7b82646fa9d57d8ea4dde0614545dfa [2021-10-24 10:33:20,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:33:20,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:33:20,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:33:20,743 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:33:20,744 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:33:20,745 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i [2021-10-24 10:33:20,823 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/data/f7b6d8741/ba083c617a32499ebce7b2a381b8d058/FLAGfacd54f75 [2021-10-24 10:33:21,545 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:33:21,546 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i [2021-10-24 10:33:21,590 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/data/f7b6d8741/ba083c617a32499ebce7b2a381b8d058/FLAGfacd54f75 [2021-10-24 10:33:21,711 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/data/f7b6d8741/ba083c617a32499ebce7b2a381b8d058 [2021-10-24 10:33:21,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:33:21,719 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:33:21,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:33:21,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:33:21,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:33:21,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:33:21" (1/1) ... [2021-10-24 10:33:21,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f124f13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:21, skipping insertion in model container [2021-10-24 10:33:21,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:33:21" (1/1) ... [2021-10-24 10:33:21,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:33:21,830 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:33:22,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:33:22,500 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) [2021-10-24 10:33:22,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2920d1e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:22, skipping insertion in model container [2021-10-24 10:33:22,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:33:22,502 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-24 10:33:22,506 INFO L168 Benchmark]: Toolchain (without parser) took 784.18 ms. Allocated memory is still 117.4 MB. Free memory was 74.7 MB in the beginning and 86.1 MB in the end (delta: -11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:33:22,509 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 117.4 MB. Free memory was 93.1 MB in the beginning and 93.0 MB in the end (delta: 80.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:33:22,511 INFO L168 Benchmark]: CACSL2BoogieTranslator took 778.89 ms. Allocated memory is still 117.4 MB. Free memory was 74.6 MB in the beginning and 86.1 MB in the end (delta: -11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:33:22,515 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 117.4 MB. Free memory was 93.1 MB in the beginning and 93.0 MB in the end (delta: 80.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 778.89 ms. Allocated memory is still 117.4 MB. Free memory was 74.6 MB in the beginning and 86.1 MB in the end (delta: -11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:33:25,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:33:25,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:33:25,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:33:25,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:33:25,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:33:25,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:33:25,495 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:33:25,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:33:25,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:33:25,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:33:25,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:33:25,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:33:25,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:33:25,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:33:25,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:33:25,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:33:25,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:33:25,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:33:25,523 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:33:25,526 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:33:25,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:33:25,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:33:25,531 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:33:25,536 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:33:25,536 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:33:25,537 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:33:25,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:33:25,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:33:25,541 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:33:25,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:33:25,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:33:25,544 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:33:25,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:33:25,547 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:33:25,547 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:33:25,548 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:33:25,549 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:33:25,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:33:25,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:33:25,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:33:25,559 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-24 10:33:25,621 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:33:25,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:33:25,627 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:33:25,627 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:33:25,628 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:33:25,628 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:33:25,628 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:33:25,629 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:33:25,630 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:33:25,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-24 10:33:25,633 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-24 10:33:25,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:33:25,635 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:33:25,635 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 10:33:25,635 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:33:25,635 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:33:25,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:33:25,636 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-24 10:33:25,636 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-24 10:33:25,637 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-24 10:33:25,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:33:25,637 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:33:25,637 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 10:33:25,638 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 10:33:25,638 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:33:25,638 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:33:25,639 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:33:25,639 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 10:33:25,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:33:25,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:33:25,640 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:33:25,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:33:25,641 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 10:33:25,641 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 10:33:25,641 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:33:25,642 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:33:25,642 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_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c03aa9fd4feebd47970076773e3fcb11c7b82646fa9d57d8ea4dde0614545dfa [2021-10-24 10:33:26,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:33:26,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:33:26,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:33:26,163 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:33:26,164 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:33:26,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i [2021-10-24 10:33:26,257 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/data/8c09eaf33/68460c6b8edb41f4bb05c900355a5f2f/FLAG790bffabb [2021-10-24 10:33:27,002 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:33:27,003 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i [2021-10-24 10:33:27,035 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/data/8c09eaf33/68460c6b8edb41f4bb05c900355a5f2f/FLAG790bffabb [2021-10-24 10:33:27,207 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/data/8c09eaf33/68460c6b8edb41f4bb05c900355a5f2f [2021-10-24 10:33:27,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:33:27,212 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:33:27,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:33:27,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:33:27,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:33:27,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:33:27" (1/1) ... [2021-10-24 10:33:27,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd0a052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:27, skipping insertion in model container [2021-10-24 10:33:27,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:33:27" (1/1) ... [2021-10-24 10:33:27,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:33:27,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:33:27,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:33:27,948 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-24 10:33:27,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:33:28,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:33:28,076 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:33:28,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:33:28,230 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:33:28,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:28 WrapperNode [2021-10-24 10:33:28,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:33:28,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:33:28,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:33:28,235 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:33:28,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:28" (1/1) ... [2021-10-24 10:33:28,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:28" (1/1) ... [2021-10-24 10:33:28,318 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:33:28,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:33:28,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:33:28,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:33:28,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:28" (1/1) ... [2021-10-24 10:33:28,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:28" (1/1) ... [2021-10-24 10:33:28,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:28" (1/1) ... [2021-10-24 10:33:28,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:28" (1/1) ... [2021-10-24 10:33:28,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:28" (1/1) ... [2021-10-24 10:33:28,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:28" (1/1) ... [2021-10-24 10:33:28,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:28" (1/1) ... [2021-10-24 10:33:28,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:33:28,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:33:28,351 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:33:28,351 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:33:28,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:28" (1/1) ... [2021-10-24 10:33:28,361 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:33:28,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:33:28,394 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:33:28,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:33:28,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-24 10:33:28,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:33:28,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 10:33:28,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-24 10:33:28,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:33:28,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:33:28,840 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:33:28,841 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-24 10:33:28,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:33:28 BoogieIcfgContainer [2021-10-24 10:33:28,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:33:28,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:33:28,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:33:28,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:33:28,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:33:27" (1/3) ... [2021-10-24 10:33:28,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17767c1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:33:28, skipping insertion in model container [2021-10-24 10:33:28,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:33:28" (2/3) ... [2021-10-24 10:33:28,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17767c1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:33:28, skipping insertion in model container [2021-10-24 10:33:28,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:33:28" (3/3) ... [2021-10-24 10:33:28,867 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test20-2.i [2021-10-24 10:33:28,874 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:33:28,886 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-24 10:33:28,968 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:33:28,978 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 10:33:28,978 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-24 10:33:29,004 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 14 states have (on average 1.5) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:29,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-24 10:33:29,020 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:33:29,021 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:33:29,022 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-24 10:33:29,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:33:29,033 INFO L82 PathProgramCache]: Analyzing trace with hash -594039000, now seen corresponding path program 1 times [2021-10-24 10:33:29,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:33:29,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769266750] [2021-10-24 10:33:29,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:33:29,051 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:33:29,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:33:29,058 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:33:29,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 10:33:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:33:29,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-24 10:33:29,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:33:29,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:33:29,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:33:29,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:33:29,529 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:33:29,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769266750] [2021-10-24 10:33:29,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769266750] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:33:29,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:33:29,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-10-24 10:33:29,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522213686] [2021-10-24 10:33:29,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-24 10:33:29,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:33:29,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-24 10:33:29,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-24 10:33:29,566 INFO L87 Difference]: Start difference. First operand has 19 states, 14 states have (on average 1.5) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:29,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:33:29,869 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2021-10-24 10:33:29,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-24 10:33:29,872 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-24 10:33:29,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:33:29,883 INFO L225 Difference]: With dead ends: 37 [2021-10-24 10:33:29,884 INFO L226 Difference]: Without dead ends: 31 [2021-10-24 10:33:29,889 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 229.3ms TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-10-24 10:33:29,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-24 10:33:29,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 21. [2021-10-24 10:33:29,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:29,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2021-10-24 10:33:29,934 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 9 [2021-10-24 10:33:29,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:33:29,935 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2021-10-24 10:33:29,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:29,936 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2021-10-24 10:33:29,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-24 10:33:29,937 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:33:29,938 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:33:29,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-24 10:33:30,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:33:30,147 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-24 10:33:30,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:33:30,148 INFO L82 PathProgramCache]: Analyzing trace with hash -591268437, now seen corresponding path program 1 times [2021-10-24 10:33:30,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:33:30,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [603568574] [2021-10-24 10:33:30,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:33:30,150 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:33:30,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:33:30,152 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:33:30,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 10:33:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:33:30,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 10:33:30,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:33:30,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:33:30,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:33:30,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:33:30,325 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:33:30,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [603568574] [2021-10-24 10:33:30,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [603568574] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:33:30,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:33:30,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-24 10:33:30,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572868109] [2021-10-24 10:33:30,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:33:30,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:33:30,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:33:30,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:33:30,331 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:30,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:33:30,357 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2021-10-24 10:33:30,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:33:30,358 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-24 10:33:30,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:33:30,359 INFO L225 Difference]: With dead ends: 34 [2021-10-24 10:33:30,360 INFO L226 Difference]: Without dead ends: 34 [2021-10-24 10:33:30,361 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:33:30,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-24 10:33:30,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 23. [2021-10-24 10:33:30,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:30,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-10-24 10:33:30,366 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 9 [2021-10-24 10:33:30,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:33:30,367 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-10-24 10:33:30,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:30,367 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-10-24 10:33:30,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-24 10:33:30,368 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:33:30,368 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:33:30,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-24 10:33:30,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:33:30,582 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-24 10:33:30,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:33:30,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1183738925, now seen corresponding path program 1 times [2021-10-24 10:33:30,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:33:30,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598141309] [2021-10-24 10:33:30,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:33:30,584 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:33:30,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:33:30,586 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:33:30,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 10:33:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:33:30,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 10:33:30,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:33:30,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:33:30,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:33:30,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:33:30,954 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:33:30,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598141309] [2021-10-24 10:33:30,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598141309] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:33:30,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:33:30,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-24 10:33:30,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731172156] [2021-10-24 10:33:30,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:33:30,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:33:30,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:33:30,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:33:30,958 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:31,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:33:31,045 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-10-24 10:33:31,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:33:31,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-24 10:33:31,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:33:31,047 INFO L225 Difference]: With dead ends: 24 [2021-10-24 10:33:31,047 INFO L226 Difference]: Without dead ends: 24 [2021-10-24 10:33:31,047 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 75.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:33:31,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-24 10:33:31,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2021-10-24 10:33:31,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:31,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-10-24 10:33:31,051 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 9 [2021-10-24 10:33:31,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:33:31,051 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-10-24 10:33:31,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:31,052 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-10-24 10:33:31,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 10:33:31,052 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:33:31,053 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:33:31,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 10:33:31,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:33:31,267 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-24 10:33:31,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:33:31,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1235339760, now seen corresponding path program 1 times [2021-10-24 10:33:31,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:33:31,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [695408363] [2021-10-24 10:33:31,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:33:31,269 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:33:31,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:33:31,270 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:33:31,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-24 10:33:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:33:31,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-24 10:33:31,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:33:31,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:33:31,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:33:31,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:33:31,990 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:33:31,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [695408363] [2021-10-24 10:33:31,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [695408363] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:33:31,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:33:31,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-10-24 10:33:31,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470214249] [2021-10-24 10:33:31,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-24 10:33:31,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:33:31,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-24 10:33:31,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-10-24 10:33:31,994 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:32,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:33:32,985 INFO L93 Difference]: Finished difference Result 33 states and 32 transitions. [2021-10-24 10:33:32,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-24 10:33:32,986 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-24 10:33:32,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:33:32,987 INFO L225 Difference]: With dead ends: 33 [2021-10-24 10:33:32,987 INFO L226 Difference]: Without dead ends: 33 [2021-10-24 10:33:32,988 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1136.7ms TimeCoverageRelationStatistics Valid=223, Invalid=533, Unknown=0, NotChecked=0, Total=756 [2021-10-24 10:33:32,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-24 10:33:32,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 20. [2021-10-24 10:33:32,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:32,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-10-24 10:33:32,993 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2021-10-24 10:33:32,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:33:32,993 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-10-24 10:33:32,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:32,994 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-10-24 10:33:32,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 10:33:32,995 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:33:32,995 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:33:33,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-24 10:33:33,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:33:33,209 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-24 10:33:33,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:33:33,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1958790987, now seen corresponding path program 1 times [2021-10-24 10:33:33,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:33:33,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931067327] [2021-10-24 10:33:33,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:33:33,211 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:33:33,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:33:33,213 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:33:33,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-24 10:33:33,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:33:33,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 10:33:33,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:33:33,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:33:33,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:33:33,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:33:33,391 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:33:33,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1931067327] [2021-10-24 10:33:33,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1931067327] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:33:33,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:33:33,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 10:33:33,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749370517] [2021-10-24 10:33:33,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:33:33,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:33:33,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:33:33,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:33:33,393 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:33,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:33:33,420 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2021-10-24 10:33:33,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:33:33,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-24 10:33:33,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:33:33,422 INFO L225 Difference]: With dead ends: 29 [2021-10-24 10:33:33,422 INFO L226 Difference]: Without dead ends: 24 [2021-10-24 10:33:33,422 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:33:33,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-24 10:33:33,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 15. [2021-10-24 10:33:33,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:33,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-10-24 10:33:33,425 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 10 [2021-10-24 10:33:33,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:33:33,426 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-10-24 10:33:33,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:33,426 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-10-24 10:33:33,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 10:33:33,426 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:33:33,426 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:33:33,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-24 10:33:33,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:33:33,635 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-24 10:33:33,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:33:33,635 INFO L82 PathProgramCache]: Analyzing trace with hash 359173162, now seen corresponding path program 1 times [2021-10-24 10:33:33,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:33:33,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1355225576] [2021-10-24 10:33:33,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:33:33,636 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:33:33,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:33:33,637 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:33:33,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-24 10:33:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:33:33,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-24 10:33:33,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:33:33,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-24 10:33:33,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:33:33,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:33:33,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:33:33,995 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:33:33,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1355225576] [2021-10-24 10:33:33,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1355225576] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:33:33,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:33:33,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-10-24 10:33:33,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604387987] [2021-10-24 10:33:33,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-24 10:33:33,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:33:33,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-24 10:33:33,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-24 10:33:33,997 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:34,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:33:34,199 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2021-10-24 10:33:34,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-24 10:33:34,200 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-24 10:33:34,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:33:34,201 INFO L225 Difference]: With dead ends: 23 [2021-10-24 10:33:34,201 INFO L226 Difference]: Without dead ends: 23 [2021-10-24 10:33:34,201 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 172.3ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-24 10:33:34,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-24 10:33:34,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-24 10:33:34,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:34,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-10-24 10:33:34,205 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 11 [2021-10-24 10:33:34,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:33:34,206 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-10-24 10:33:34,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:34,206 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-10-24 10:33:34,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 10:33:34,207 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:33:34,207 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:33:34,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-24 10:33:34,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:33:34,420 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-24 10:33:34,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:33:34,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1039231532, now seen corresponding path program 1 times [2021-10-24 10:33:34,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:33:34,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1423620116] [2021-10-24 10:33:34,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:33:34,422 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:33:34,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:33:34,423 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:33:34,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-24 10:33:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:33:34,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 10:33:34,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:33:34,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:33:34,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:33:34,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:33:34,662 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:33:34,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1423620116] [2021-10-24 10:33:34,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1423620116] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:33:34,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:33:34,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-24 10:33:34,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18427621] [2021-10-24 10:33:34,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:33:34,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:33:34,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:33:34,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:33:34,664 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:34,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:33:34,696 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2021-10-24 10:33:34,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:33:34,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-24 10:33:34,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:33:34,698 INFO L225 Difference]: With dead ends: 16 [2021-10-24 10:33:34,699 INFO L226 Difference]: Without dead ends: 14 [2021-10-24 10:33:34,699 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:33:34,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-24 10:33:34,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-24 10:33:34,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:34,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2021-10-24 10:33:34,702 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 11 [2021-10-24 10:33:34,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:33:34,702 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2021-10-24 10:33:34,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:34,702 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2021-10-24 10:33:34,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-24 10:33:34,703 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:33:34,704 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:33:34,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-24 10:33:34,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:33:34,915 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-24 10:33:34,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:33:34,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1568026990, now seen corresponding path program 1 times [2021-10-24 10:33:34,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:33:34,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241754661] [2021-10-24 10:33:34,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:33:34,916 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:33:34,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:33:34,925 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:33:34,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-24 10:33:35,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:33:35,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-24 10:33:35,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:33:35,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:33:35,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:33:39,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:33:39,804 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:33:39,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241754661] [2021-10-24 10:33:39,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1241754661] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:33:39,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:33:39,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-10-24 10:33:39,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838124426] [2021-10-24 10:33:39,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-24 10:33:39,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:33:39,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-24 10:33:39,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=230, Unknown=2, NotChecked=0, Total=272 [2021-10-24 10:33:39,807 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand has 17 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:40,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:33:40,473 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-10-24 10:33:40,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-24 10:33:40,473 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-24 10:33:40,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:33:40,474 INFO L225 Difference]: With dead ends: 13 [2021-10-24 10:33:40,474 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 10:33:40,475 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 5067.7ms TimeCoverageRelationStatistics Valid=122, Invalid=428, Unknown=2, NotChecked=0, Total=552 [2021-10-24 10:33:40,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 10:33:40,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 10:33:40,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:40,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 10:33:40,475 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-10-24 10:33:40,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:33:40,476 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 10:33:40,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:33:40,476 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 10:33:40,476 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 10:33:40,479 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:33:40,480 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:33:40,481 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:33:40,481 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK [2021-10-24 10:33:40,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-24 10:33:40,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:33:40,687 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:33:40,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:33:40 BoogieIcfgContainer [2021-10-24 10:33:40,697 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:33:40,698 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:33:40,698 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:33:40,699 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:33:40,699 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:33:28" (3/4) ... [2021-10-24 10:33:40,703 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 10:33:40,716 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-24 10:33:40,716 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-24 10:33:40,717 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 10:33:40,774 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:33:40,774 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:33:40,776 INFO L168 Benchmark]: Toolchain (without parser) took 13563.15 ms. Allocated memory was 81.8 MB in the beginning and 104.9 MB in the end (delta: 23.1 MB). Free memory was 45.9 MB in the beginning and 55.5 MB in the end (delta: -9.7 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:33:40,776 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 81.8 MB. Free memory was 63.9 MB in the beginning and 63.8 MB in the end (delta: 69.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:33:40,777 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1017.92 ms. Allocated memory is still 81.8 MB. Free memory was 45.7 MB in the beginning and 47.2 MB in the end (delta: -1.5 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:33:40,778 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.11 ms. Allocated memory is still 81.8 MB. Free memory was 47.0 MB in the beginning and 44.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:33:40,778 INFO L168 Benchmark]: Boogie Preprocessor took 31.38 ms. Allocated memory is still 81.8 MB. Free memory was 44.9 MB in the beginning and 43.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:33:40,779 INFO L168 Benchmark]: RCFGBuilder took 507.51 ms. Allocated memory is still 81.8 MB. Free memory was 43.5 MB in the beginning and 59.9 MB in the end (delta: -16.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:33:40,779 INFO L168 Benchmark]: TraceAbstraction took 11837.21 ms. Allocated memory was 81.8 MB in the beginning and 104.9 MB in the end (delta: 23.1 MB). Free memory was 59.6 MB in the beginning and 58.7 MB in the end (delta: 962.5 kB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. [2021-10-24 10:33:40,780 INFO L168 Benchmark]: Witness Printer took 76.37 ms. Allocated memory is still 104.9 MB. Free memory was 58.7 MB in the beginning and 55.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:33:40,783 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 81.8 MB. Free memory was 63.9 MB in the beginning and 63.8 MB in the end (delta: 69.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1017.92 ms. Allocated memory is still 81.8 MB. Free memory was 45.7 MB in the beginning and 47.2 MB in the end (delta: -1.5 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 84.11 ms. Allocated memory is still 81.8 MB. Free memory was 47.0 MB in the beginning and 44.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.38 ms. Allocated memory is still 81.8 MB. Free memory was 44.9 MB in the beginning and 43.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 507.51 ms. Allocated memory is still 81.8 MB. Free memory was 43.5 MB in the beginning and 59.9 MB in the end (delta: -16.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11837.21 ms. Allocated memory was 81.8 MB in the beginning and 104.9 MB in the end (delta: 23.1 MB). Free memory was 59.6 MB in the beginning and 58.7 MB in the end (delta: 962.5 kB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. * Witness Printer took 76.37 ms. Allocated memory is still 104.9 MB. Free memory was 58.7 MB in the beginning and 55.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 789]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 11720.7ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 34.2ms, AutomataDifference: 2400.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 111 SDtfs, 360 SDslu, 247 SDs, 0 SdLazy, 299 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 500.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 184 GetRequests, 96 SyntacticMatches, 4 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 6725.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=2, InterpolantAutomatonStates: 61, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 46.6ms AutomataMinimizationTime, 8 MinimizatonAttempts, 46 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 84.2ms SsaConstructionTime, 212.7ms SatisfiabilityAnalysisTime, 6512.5ms InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 148 ConstructedInterpolants, 3 QuantifiedInterpolants, 712 SizeOfPredicates, 41 NumberOfNonLiveVariables, 361 ConjunctsInSsa, 62 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-24 10:33:40,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6191c9bf-9397-4691-8af8-33c94c2b51a5/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...