./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta --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 3011b5baaaedb6c621e2913d841379eae3b8a9da7212e43b784fc8c1004eda96 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:14:29,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:14:29,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:14:29,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:14:29,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:14:29,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:14:29,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:14:29,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:14:29,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:14:29,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:14:29,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:14:29,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:14:29,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:14:29,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:14:29,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:14:29,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:14:29,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:14:29,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:14:29,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:14:29,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:14:29,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:14:29,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:14:29,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:14:29,926 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:14:29,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:14:29,931 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:14:29,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:14:29,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:14:29,933 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:14:29,934 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:14:29,935 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:14:29,936 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:14:29,937 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:14:29,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:14:29,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:14:29,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:14:29,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:14:29,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:14:29,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:14:29,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:14:29,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:14:29,947 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-10-17 17:14:29,981 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:14:29,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:14:29,995 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:14:29,995 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:14:29,996 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:14:29,996 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:14:29,997 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:14:29,997 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:14:29,997 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:14:29,998 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:14:29,999 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:14:29,999 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:14:29,999 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:14:29,999 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:14:30,000 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:14:30,000 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:14:30,000 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:14:30,000 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:14:30,001 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 17:14:30,001 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 17:14:30,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:14:30,002 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:14:30,002 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 17:14:30,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:14:30,003 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:14:30,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:14:30,003 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 17:14:30,003 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 17:14:30,003 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 17:14:30,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:14:30,004 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 17:14:30,004 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:14:30,004 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:14:30,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:14:30,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:14:30,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:14:30,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:14:30,008 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:14:30,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:14:30,008 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:14:30,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:14:30,008 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:14:30,008 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3011b5baaaedb6c621e2913d841379eae3b8a9da7212e43b784fc8c1004eda96 [2022-10-17 17:14:30,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:14:30,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:14:30,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:14:30,294 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:14:30,295 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:14:30,297 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i [2022-10-17 17:14:30,363 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/data/d7af9c455/cfac5e09fa5a4387bc686a9cb2d02041/FLAG9dbe6b387 [2022-10-17 17:14:30,982 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:14:30,982 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i [2022-10-17 17:14:31,012 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/data/d7af9c455/cfac5e09fa5a4387bc686a9cb2d02041/FLAG9dbe6b387 [2022-10-17 17:14:31,159 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/data/d7af9c455/cfac5e09fa5a4387bc686a9cb2d02041 [2022-10-17 17:14:31,161 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:14:31,163 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:14:31,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:14:31,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:14:31,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:14:31,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:14:31" (1/1) ... [2022-10-17 17:14:31,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3353b7fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:14:31, skipping insertion in model container [2022-10-17 17:14:31,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:14:31" (1/1) ... [2022-10-17 17:14:31,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:14:31,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:14:31,689 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i[33021,33034] [2022-10-17 17:14:31,827 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i[45234,45247] [2022-10-17 17:14:31,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:14:31,862 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-10-17 17:14:31,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5f223adf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:14:31, skipping insertion in model container [2022-10-17 17:14:31,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:14:31,864 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-10-17 17:14:31,866 INFO L158 Benchmark]: Toolchain (without parser) took 701.93ms. Allocated memory is still 98.6MB. Free memory was 73.4MB in the beginning and 61.9MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 17:14:31,867 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 98.6MB. Free memory is still 68.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:14:31,869 INFO L158 Benchmark]: CACSL2BoogieTranslator took 699.44ms. Allocated memory is still 98.6MB. Free memory was 73.2MB in the beginning and 61.9MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 17:14:31,872 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 98.6MB. Free memory is still 68.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 699.44ms. Allocated memory is still 98.6MB. Free memory was 73.2MB in the beginning and 61.9MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 766]: Unsupported Syntax Found a cast between two array/pointer types of different sizes 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta --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 3011b5baaaedb6c621e2913d841379eae3b8a9da7212e43b784fc8c1004eda96 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:14:34,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:14:34,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:14:34,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:14:34,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:14:34,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:14:34,089 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:14:34,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:14:34,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:14:34,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:14:34,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:14:34,098 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:14:34,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:14:34,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:14:34,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:14:34,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:14:34,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:14:34,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:14:34,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:14:34,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:14:34,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:14:34,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:14:34,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:14:34,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:14:34,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:14:34,121 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:14:34,121 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:14:34,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:14:34,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:14:34,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:14:34,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:14:34,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:14:34,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:14:34,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:14:34,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:14:34,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:14:34,130 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:14:34,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:14:34,131 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:14:34,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:14:34,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:14:34,134 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-10-17 17:14:34,161 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:14:34,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:14:34,162 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:14:34,162 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:14:34,163 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:14:34,163 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:14:34,164 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:14:34,164 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:14:34,164 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:14:34,165 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:14:34,165 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:14:34,165 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:14:34,166 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 17:14:34,166 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 17:14:34,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:14:34,167 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:14:34,167 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 17:14:34,167 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:14:34,168 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:14:34,168 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:14:34,168 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 17:14:34,168 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 17:14:34,169 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 17:14:34,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:14:34,169 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 17:14:34,169 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 17:14:34,170 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 17:14:34,170 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:14:34,170 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:14:34,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:14:34,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 17:14:34,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:14:34,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:14:34,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:14:34,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:14:34,172 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-10-17 17:14:34,174 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 17:14:34,174 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:14:34,174 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 17:14:34,175 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_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3011b5baaaedb6c621e2913d841379eae3b8a9da7212e43b784fc8c1004eda96 [2022-10-17 17:14:34,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:14:34,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:14:34,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:14:34,661 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:14:34,661 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:14:34,663 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i [2022-10-17 17:14:34,740 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/data/374f46b9d/557ef366d5264a8ea751e66ff9f4b75f/FLAG2149873c9 [2022-10-17 17:14:35,341 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:14:35,341 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i [2022-10-17 17:14:35,368 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/data/374f46b9d/557ef366d5264a8ea751e66ff9f4b75f/FLAG2149873c9 [2022-10-17 17:14:35,582 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/data/374f46b9d/557ef366d5264a8ea751e66ff9f4b75f [2022-10-17 17:14:35,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:14:35,586 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:14:35,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:14:35,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:14:35,601 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:14:35,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:14:35" (1/1) ... [2022-10-17 17:14:35,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c86494e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:14:35, skipping insertion in model container [2022-10-17 17:14:35,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:14:35" (1/1) ... [2022-10-17 17:14:35,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:14:35,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:14:36,208 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i[33021,33034] [2022-10-17 17:14:36,395 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i[45234,45247] [2022-10-17 17:14:36,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:14:36,448 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-10-17 17:14:36,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:14:36,498 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i[33021,33034] [2022-10-17 17:14:36,606 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i[45234,45247] [2022-10-17 17:14:36,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:14:36,620 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:14:36,646 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i[33021,33034] [2022-10-17 17:14:36,688 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i[45234,45247] [2022-10-17 17:14:36,696 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:14:36,746 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:14:36,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:14:36 WrapperNode [2022-10-17 17:14:36,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:14:36,748 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:14:36,748 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:14:36,749 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:14:36,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:14:36" (1/1) ... [2022-10-17 17:14:36,826 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:14:36" (1/1) ... [2022-10-17 17:14:36,950 INFO L138 Inliner]: procedures = 180, calls = 348, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1175 [2022-10-17 17:14:36,950 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:14:36,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:14:36,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:14:36,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:14:36,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:14:36" (1/1) ... [2022-10-17 17:14:36,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:14:36" (1/1) ... [2022-10-17 17:14:36,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:14:36" (1/1) ... [2022-10-17 17:14:36,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:14:36" (1/1) ... [2022-10-17 17:14:37,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:14:36" (1/1) ... [2022-10-17 17:14:37,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:14:36" (1/1) ... [2022-10-17 17:14:37,049 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:14:36" (1/1) ... [2022-10-17 17:14:37,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:14:36" (1/1) ... [2022-10-17 17:14:37,067 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:14:37,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:14:37,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:14:37,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:14:37,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:14:36" (1/1) ... [2022-10-17 17:14:37,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:14:37,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:14:37,118 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:14:37,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:14:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-10-17 17:14:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-10-17 17:14:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 17:14:37,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 17:14:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-10-17 17:14:37,164 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-10-17 17:14:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2022-10-17 17:14:37,165 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2022-10-17 17:14:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 17:14:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:14:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 17:14:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:14:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-10-17 17:14:37,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 17:14:37,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:14:37,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-10-17 17:14:37,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-10-17 17:14:37,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:14:37,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:14:37,423 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:14:37,425 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:14:37,430 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-17 17:14:43,631 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:14:43,651 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:14:43,651 INFO L300 CfgBuilder]: Removed 71 assume(true) statements. [2022-10-17 17:14:43,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:14:43 BoogieIcfgContainer [2022-10-17 17:14:43,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:14:43,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:14:43,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:14:43,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:14:43,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:14:35" (1/3) ... [2022-10-17 17:14:43,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4338efc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:14:43, skipping insertion in model container [2022-10-17 17:14:43,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:14:36" (2/3) ... [2022-10-17 17:14:43,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4338efc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:14:43, skipping insertion in model container [2022-10-17 17:14:43,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:14:43" (3/3) ... [2022-10-17 17:14:43,665 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test8-2.i [2022-10-17 17:14:43,684 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:14:43,684 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 641 error locations. [2022-10-17 17:14:43,747 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:14:43,754 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@66143872, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:14:43,755 INFO L358 AbstractCegarLoop]: Starting to check reachability of 641 error locations. [2022-10-17 17:14:43,763 INFO L276 IsEmpty]: Start isEmpty. Operand has 1296 states, 634 states have (on average 2.2539432176656153) internal successors, (1429), 1287 states have internal predecessors, (1429), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2022-10-17 17:14:43,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-17 17:14:43,768 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:14:43,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-17 17:14:43,770 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 638 more)] === [2022-10-17 17:14:43,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:14:43,775 INFO L85 PathProgramCache]: Analyzing trace with hash 132136, now seen corresponding path program 1 times [2022-10-17 17:14:43,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:14:43,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633547843] [2022-10-17 17:14:43,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:14:43,789 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:14:43,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:14:43,792 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:14:43,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 17:14:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:14:43,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 17:14:43,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:14:44,081 INFO L390 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 7 [2022-10-17 17:14:44,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:14:44,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:14:44,110 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:14:44,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633547843] [2022-10-17 17:14:44,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633547843] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:14:44,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:14:44,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:14:44,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958158776] [2022-10-17 17:14:44,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:14:44,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:14:44,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:14:44,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:14:44,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:14:44,169 INFO L87 Difference]: Start difference. First operand has 1296 states, 634 states have (on average 2.2539432176656153) internal successors, (1429), 1287 states have internal predecessors, (1429), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:14:47,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:14:47,068 INFO L93 Difference]: Finished difference Result 1476 states and 1582 transitions. [2022-10-17 17:14:47,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:14:47,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-10-17 17:14:47,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:14:47,112 INFO L225 Difference]: With dead ends: 1476 [2022-10-17 17:14:47,112 INFO L226 Difference]: Without dead ends: 1474 [2022-10-17 17:14:47,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:14:47,122 INFO L413 NwaCegarLoop]: 817 mSDtfsCounter, 1162 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-10-17 17:14:47,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1166 Valid, 1048 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-10-17 17:14:47,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2022-10-17 17:14:47,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1285. [2022-10-17 17:14:47,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1285 states, 637 states have (on average 2.111459968602826) internal successors, (1345), 1275 states have internal predecessors, (1345), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2022-10-17 17:14:47,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 1387 transitions. [2022-10-17 17:14:47,273 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 1387 transitions. Word has length 3 [2022-10-17 17:14:47,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:14:47,273 INFO L495 AbstractCegarLoop]: Abstraction has 1285 states and 1387 transitions. [2022-10-17 17:14:47,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:14:47,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 1387 transitions. [2022-10-17 17:14:47,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-17 17:14:47,274 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:14:47,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-17 17:14:47,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-10-17 17:14:47,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:14:47,486 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 638 more)] === [2022-10-17 17:14:47,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:14:47,487 INFO L85 PathProgramCache]: Analyzing trace with hash 132137, now seen corresponding path program 1 times [2022-10-17 17:14:47,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:14:47,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1840308236] [2022-10-17 17:14:47,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:14:47,488 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:14:47,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:14:47,490 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:14:47,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-10-17 17:14:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:14:47,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 17:14:47,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:14:47,654 INFO L390 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 [2022-10-17 17:14:47,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:14:47,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:14:47,672 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:14:47,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1840308236] [2022-10-17 17:14:47,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1840308236] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:14:47,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:14:47,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:14:47,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072385615] [2022-10-17 17:14:47,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:14:47,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:14:47,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:14:47,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:14:47,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:14:47,679 INFO L87 Difference]: Start difference. First operand 1285 states and 1387 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:14:51,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:14:51,683 INFO L93 Difference]: Finished difference Result 1877 states and 2020 transitions. [2022-10-17 17:14:51,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:14:51,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-10-17 17:14:51,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:14:51,694 INFO L225 Difference]: With dead ends: 1877 [2022-10-17 17:14:51,695 INFO L226 Difference]: Without dead ends: 1877 [2022-10-17 17:14:51,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:14:51,696 INFO L413 NwaCegarLoop]: 1090 mSDtfsCounter, 631 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 1840 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-10-17 17:14:51,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 1840 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-10-17 17:14:51,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1877 states. [2022-10-17 17:14:51,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1877 to 1489. [2022-10-17 17:14:51,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1489 states, 841 states have (on average 2.097502972651605) internal successors, (1764), 1478 states have internal predecessors, (1764), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2022-10-17 17:14:51,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 1808 transitions. [2022-10-17 17:14:51,746 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 1808 transitions. Word has length 3 [2022-10-17 17:14:51,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:14:51,747 INFO L495 AbstractCegarLoop]: Abstraction has 1489 states and 1808 transitions. [2022-10-17 17:14:51,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:14:51,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 1808 transitions. [2022-10-17 17:14:51,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 17:14:51,747 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:14:51,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:14:51,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-10-17 17:14:51,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:14:51,962 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 638 more)] === [2022-10-17 17:14:51,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:14:51,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1773817970, now seen corresponding path program 1 times [2022-10-17 17:14:51,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:14:51,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [914315933] [2022-10-17 17:14:51,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:14:51,972 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:14:51,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:14:51,974 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:14:52,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-10-17 17:14:52,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:14:52,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 17:14:52,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:14:52,178 INFO L390 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 7 [2022-10-17 17:14:52,187 INFO L390 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 [2022-10-17 17:14:52,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:14:52,281 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-10-17 17:14:52,298 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-10-17 17:14:52,299 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-10-17 17:14:52,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:14:52,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:14:52,335 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:14:52,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [914315933] [2022-10-17 17:14:52,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [914315933] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:14:52,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:14:52,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:14:52,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632591442] [2022-10-17 17:14:52,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:14:52,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:14:52,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:14:52,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:14:52,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:14:52,343 INFO L87 Difference]: Start difference. First operand 1489 states and 1808 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-10-17 17:14:56,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:14:56,418 INFO L93 Difference]: Finished difference Result 1671 states and 1997 transitions. [2022-10-17 17:14:56,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 17:14:56,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2022-10-17 17:14:56,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:14:56,430 INFO L225 Difference]: With dead ends: 1671 [2022-10-17 17:14:56,430 INFO L226 Difference]: Without dead ends: 1671 [2022-10-17 17:14:56,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:14:56,434 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 2605 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2611 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:14:56,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2611 Valid, 645 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-10-17 17:14:56,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1671 states. [2022-10-17 17:14:56,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1671 to 1274. [2022-10-17 17:14:56,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 637 states have (on average 2.0926216640502355) internal successors, (1333), 1264 states have internal predecessors, (1333), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2022-10-17 17:14:56,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 1375 transitions. [2022-10-17 17:14:56,492 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 1375 transitions. Word has length 7 [2022-10-17 17:14:56,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:14:56,493 INFO L495 AbstractCegarLoop]: Abstraction has 1274 states and 1375 transitions. [2022-10-17 17:14:56,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-10-17 17:14:56,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 1375 transitions. [2022-10-17 17:14:56,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 17:14:56,494 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:14:56,494 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:14:56,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-10-17 17:14:56,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:14:56,710 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 638 more)] === [2022-10-17 17:14:56,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:14:56,710 INFO L85 PathProgramCache]: Analyzing trace with hash -846217710, now seen corresponding path program 1 times [2022-10-17 17:14:56,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:14:56,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276402296] [2022-10-17 17:14:56,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:14:56,711 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:14:56,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:14:56,712 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:14:56,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-10-17 17:14:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:14:56,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 17:14:56,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:14:56,864 INFO L390 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 7 [2022-10-17 17:14:56,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:14:56,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:14:56,875 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:14:56,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276402296] [2022-10-17 17:14:56,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1276402296] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:14:56,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:14:56,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:14:56,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628362018] [2022-10-17 17:14:56,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:14:56,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:14:56,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:14:56,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:14:56,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:14:56,878 INFO L87 Difference]: Start difference. First operand 1274 states and 1375 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-10-17 17:14:59,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:14:59,259 INFO L93 Difference]: Finished difference Result 1601 states and 1729 transitions. [2022-10-17 17:14:59,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:14:59,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2022-10-17 17:14:59,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:14:59,269 INFO L225 Difference]: With dead ends: 1601 [2022-10-17 17:14:59,269 INFO L226 Difference]: Without dead ends: 1601 [2022-10-17 17:14:59,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:14:59,270 INFO L413 NwaCegarLoop]: 1204 mSDtfsCounter, 988 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-10-17 17:14:59,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 1610 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-10-17 17:14:59,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2022-10-17 17:14:59,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1227. [2022-10-17 17:14:59,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 637 states have (on average 2.0172684458398744) internal successors, (1285), 1217 states have internal predecessors, (1285), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2022-10-17 17:14:59,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1327 transitions. [2022-10-17 17:14:59,314 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1327 transitions. Word has length 8 [2022-10-17 17:14:59,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:14:59,315 INFO L495 AbstractCegarLoop]: Abstraction has 1227 states and 1327 transitions. [2022-10-17 17:14:59,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-10-17 17:14:59,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1327 transitions. [2022-10-17 17:14:59,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 17:14:59,316 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:14:59,316 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:14:59,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-10-17 17:14:59,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:14:59,528 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 638 more)] === [2022-10-17 17:14:59,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:14:59,528 INFO L85 PathProgramCache]: Analyzing trace with hash -846217709, now seen corresponding path program 1 times [2022-10-17 17:14:59,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:14:59,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1231081080] [2022-10-17 17:14:59,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:14:59,529 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:14:59,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:14:59,530 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:14:59,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8669a8b2-4d2c-4877-a41f-3c3a933428e3/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-10-17 17:14:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:14:59,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 17:14:59,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:14:59,689 INFO L390 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 [2022-10-17 17:14:59,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:14:59,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:14:59,716 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:14:59,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1231081080] [2022-10-17 17:14:59,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1231081080] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:14:59,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:14:59,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:14:59,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611122509] [2022-10-17 17:14:59,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:14:59,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:14:59,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:14:59,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:14:59,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:14:59,719 INFO L87 Difference]: Start difference. First operand 1227 states and 1327 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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)