./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.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_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/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_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/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_5ba39614-be2d-4920-8f59-d5d67f6c61b1/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 bd259ad1e1e9b7f6e2ebd2858541cc7ac07d30ed5cbee2b9de70c1db1c5b700e --- 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 17:45:31,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:45:31,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:45:31,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:45:31,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:45:31,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:45:31,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:45:31,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:45:31,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:45:31,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:45:31,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:45:31,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:45:31,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:45:31,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:45:31,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:45:31,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:45:31,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:45:31,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:45:31,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:45:31,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:45:31,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:45:31,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:45:31,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:45:31,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:45:31,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:45:31,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:45:31,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:45:31,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:45:31,990 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:45:31,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:45:31,992 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:45:31,993 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:45:31,995 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:45:31,996 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:45:31,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:45:31,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:45:32,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:45:32,000 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:45:32,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:45:32,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:45:32,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:45:32,004 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-10-17 17:45:32,054 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:45:32,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:45:32,055 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:45:32,055 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:45:32,056 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:45:32,056 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:45:32,057 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:45:32,057 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:45:32,057 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:45:32,057 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:45:32,058 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:45:32,059 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:45:32,059 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:45:32,059 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:45:32,059 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:45:32,060 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:45:32,060 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:45:32,060 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:45:32,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 17:45:32,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 17:45:32,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:45:32,063 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:45:32,063 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 17:45:32,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:45:32,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:45:32,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:45:32,064 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 17:45:32,064 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 17:45:32,065 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 17:45:32,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:45:32,065 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 17:45:32,065 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:45:32,066 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:45:32,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:45:32,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:45:32,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:45:32,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:45:32,067 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:45:32,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:45:32,067 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:45:32,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:45:32,068 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:45:32,068 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_5ba39614-be2d-4920-8f59-d5d67f6c61b1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd259ad1e1e9b7f6e2ebd2858541cc7ac07d30ed5cbee2b9de70c1db1c5b700e [2022-10-17 17:45:32,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:45:32,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:45:32,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:45:32,386 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:45:32,391 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:45:32,392 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i [2022-10-17 17:45:32,485 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/data/c3954d363/b337ee8701c24160b217bdb19de8c98b/FLAG0b094c44c [2022-10-17 17:45:33,064 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:45:33,064 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i [2022-10-17 17:45:33,080 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/data/c3954d363/b337ee8701c24160b217bdb19de8c98b/FLAG0b094c44c [2022-10-17 17:45:33,306 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/data/c3954d363/b337ee8701c24160b217bdb19de8c98b [2022-10-17 17:45:33,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:45:33,310 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:45:33,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:45:33,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:45:33,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:45:33,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:45:33" (1/1) ... [2022-10-17 17:45:33,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2afbec5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:33, skipping insertion in model container [2022-10-17 17:45:33,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:45:33" (1/1) ... [2022-10-17 17:45:33,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:45:33,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:45:33,774 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_5ba39614-be2d-4920-8f59-d5d67f6c61b1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i[33021,33034] [2022-10-17 17:45:33,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:45:33,983 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 17:45:33,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7f924e2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:33, skipping insertion in model container [2022-10-17 17:45:33,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:45:33,984 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-10-17 17:45:33,985 INFO L158 Benchmark]: Toolchain (without parser) took 674.82ms. Allocated memory is still 94.4MB. Free memory was 52.6MB in the beginning and 55.7MB in the end (delta: -3.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 17:45:33,986 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 94.4MB. Free memory is still 71.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:45:33,991 INFO L158 Benchmark]: CACSL2BoogieTranslator took 672.40ms. Allocated memory is still 94.4MB. Free memory was 52.4MB in the beginning and 55.7MB in the end (delta: -3.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 17:45:33,993 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 94.4MB. Free memory is still 71.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 672.40ms. Allocated memory is still 94.4MB. Free memory was 52.4MB in the beginning and 55.7MB in the end (delta: -3.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 752]: 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_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/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_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/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_5ba39614-be2d-4920-8f59-d5d67f6c61b1/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 bd259ad1e1e9b7f6e2ebd2858541cc7ac07d30ed5cbee2b9de70c1db1c5b700e --- 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 17:45:36,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:45:36,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:45:36,164 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:45:36,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:45:36,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:45:36,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:45:36,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:45:36,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:45:36,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:45:36,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:45:36,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:45:36,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:45:36,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:45:36,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:45:36,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:45:36,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:45:36,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:45:36,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:45:36,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:45:36,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:45:36,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:45:36,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:45:36,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:45:36,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:45:36,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:45:36,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:45:36,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:45:36,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:45:36,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:45:36,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:45:36,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:45:36,202 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:45:36,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:45:36,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:45:36,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:45:36,229 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:45:36,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:45:36,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:45:36,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:45:36,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:45:36,233 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-10-17 17:45:36,258 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:45:36,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:45:36,258 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:45:36,258 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:45:36,259 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:45:36,259 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:45:36,259 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:45:36,260 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:45:36,260 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:45:36,260 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:45:36,260 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:45:36,260 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:45:36,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 17:45:36,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 17:45:36,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:45:36,262 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:45:36,262 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 17:45:36,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:45:36,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:45:36,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:45:36,262 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 17:45:36,263 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 17:45:36,263 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 17:45:36,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:45:36,263 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 17:45:36,263 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 17:45:36,264 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 17:45:36,264 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:45:36,264 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:45:36,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:45:36,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 17:45:36,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:45:36,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:45:36,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:45:36,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:45:36,265 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-10-17 17:45:36,266 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 17:45:36,266 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:45:36,266 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 17:45:36,266 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_5ba39614-be2d-4920-8f59-d5d67f6c61b1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd259ad1e1e9b7f6e2ebd2858541cc7ac07d30ed5cbee2b9de70c1db1c5b700e [2022-10-17 17:45:36,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:45:36,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:45:36,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:45:36,645 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:45:36,647 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:45:36,648 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i [2022-10-17 17:45:36,716 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/data/928ff1e45/ae7647dfba4641e7a5dcde3fd567690c/FLAGfcaede9a3 [2022-10-17 17:45:37,503 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:45:37,504 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i [2022-10-17 17:45:37,528 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/data/928ff1e45/ae7647dfba4641e7a5dcde3fd567690c/FLAGfcaede9a3 [2022-10-17 17:45:37,684 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/data/928ff1e45/ae7647dfba4641e7a5dcde3fd567690c [2022-10-17 17:45:37,686 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:45:37,687 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:45:37,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:45:37,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:45:37,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:45:37,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:45:37" (1/1) ... [2022-10-17 17:45:37,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@128d0331 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:37, skipping insertion in model container [2022-10-17 17:45:37,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:45:37" (1/1) ... [2022-10-17 17:45:37,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:45:37,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:45:38,240 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_5ba39614-be2d-4920-8f59-d5d67f6c61b1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i[33021,33034] [2022-10-17 17:45:38,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:45:38,389 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-10-17 17:45:38,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:45:38,452 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_5ba39614-be2d-4920-8f59-d5d67f6c61b1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i[33021,33034] [2022-10-17 17:45:38,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:45:38,569 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:45:38,595 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_5ba39614-be2d-4920-8f59-d5d67f6c61b1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i[33021,33034] [2022-10-17 17:45:38,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:45:38,717 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:45:38,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:38 WrapperNode [2022-10-17 17:45:38,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:45:38,719 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:45:38,719 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:45:38,719 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:45:38,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:38" (1/1) ... [2022-10-17 17:45:38,792 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:38" (1/1) ... [2022-10-17 17:45:38,887 INFO L138 Inliner]: procedures = 180, calls = 448, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1473 [2022-10-17 17:45:38,888 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:45:38,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:45:38,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:45:38,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:45:38,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:38" (1/1) ... [2022-10-17 17:45:38,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:38" (1/1) ... [2022-10-17 17:45:38,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:38" (1/1) ... [2022-10-17 17:45:38,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:38" (1/1) ... [2022-10-17 17:45:38,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:38" (1/1) ... [2022-10-17 17:45:38,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:38" (1/1) ... [2022-10-17 17:45:38,986 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:38" (1/1) ... [2022-10-17 17:45:38,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:38" (1/1) ... [2022-10-17 17:45:39,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:45:39,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:45:39,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:45:39,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:45:39,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:38" (1/1) ... [2022-10-17 17:45:39,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:45:39,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:45:39,040 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:45:39,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:45:39,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-10-17 17:45:39,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-10-17 17:45:39,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 17:45:39,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 17:45:39,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-10-17 17:45:39,089 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-10-17 17:45:39,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 17:45:39,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:45:39,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:45:39,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 17:45:39,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 17:45:39,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:45:39,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-10-17 17:45:39,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-10-17 17:45:39,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:45:39,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:45:39,361 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:45:39,363 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:45:39,375 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-17 17:45:46,315 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:45:46,342 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:45:46,342 INFO L300 CfgBuilder]: Removed 77 assume(true) statements. [2022-10-17 17:45:46,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:45:46 BoogieIcfgContainer [2022-10-17 17:45:46,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:45:46,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:45:46,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:45:46,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:45:46,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:45:37" (1/3) ... [2022-10-17 17:45:46,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@238786e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:45:46, skipping insertion in model container [2022-10-17 17:45:46,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:45:38" (2/3) ... [2022-10-17 17:45:46,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@238786e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:45:46, skipping insertion in model container [2022-10-17 17:45:46,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:45:46" (3/3) ... [2022-10-17 17:45:46,356 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test4-3.i [2022-10-17 17:45:46,375 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:45:46,375 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 851 error locations. [2022-10-17 17:45:46,443 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:45:46,449 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;@5880703c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:45:46,450 INFO L358 AbstractCegarLoop]: Starting to check reachability of 851 error locations. [2022-10-17 17:45:46,458 INFO L276 IsEmpty]: Start isEmpty. Operand has 1651 states, 787 states have (on average 2.283354510800508) internal successors, (1797), 1642 states have internal predecessors, (1797), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-10-17 17:45:46,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-17 17:45:46,464 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:45:46,465 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-17 17:45:46,465 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2022-10-17 17:45:46,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:45:46,470 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2022-10-17 17:45:46,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:45:46,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874040585] [2022-10-17 17:45:46,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:45:46,484 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:45:46,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:45:46,487 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:45:46,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 17:45:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:45:46,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 17:45:46,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:45:46,730 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 17:45:46,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:45:46,731 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:45:46,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [874040585] [2022-10-17 17:45:46,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [874040585] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:45:46,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:45:46,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:45:46,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662704244] [2022-10-17 17:45:46,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:45:46,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:45:46,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:45:46,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:45:46,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:45:46,780 INFO L87 Difference]: Start difference. First operand has 1651 states, 787 states have (on average 2.283354510800508) internal successors, (1797), 1642 states have internal predecessors, (1797), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 17:45:46,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:45:46,883 INFO L93 Difference]: Finished difference Result 1633 states and 1726 transitions. [2022-10-17 17:45:46,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 17:45:46,885 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2022-10-17 17:45:46,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:45:46,915 INFO L225 Difference]: With dead ends: 1633 [2022-10-17 17:45:46,915 INFO L226 Difference]: Without dead ends: 1631 [2022-10-17 17:45:46,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:45:46,920 INFO L413 NwaCegarLoop]: 1726 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:45:46,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1726 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:45:46,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2022-10-17 17:45:47,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1631. [2022-10-17 17:45:47,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 778 states have (on average 2.1748071979434447) internal successors, (1692), 1622 states have internal predecessors, (1692), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-10-17 17:45:47,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 1724 transitions. [2022-10-17 17:45:47,085 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 1724 transitions. Word has length 5 [2022-10-17 17:45:47,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:45:47,085 INFO L495 AbstractCegarLoop]: Abstraction has 1631 states and 1724 transitions. [2022-10-17 17:45:47,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 17:45:47,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 1724 transitions. [2022-10-17 17:45:47,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-17 17:45:47,086 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:45:47,087 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-17 17:45:47,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-10-17 17:45:47,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:45:47,291 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2022-10-17 17:45:47,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:45:47,292 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2022-10-17 17:45:47,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:45:47,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13428878] [2022-10-17 17:45:47,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:45:47,296 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:45:47,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:45:47,297 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:45:47,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-10-17 17:45:47,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:45:47,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 17:45:47,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:45:47,513 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 17:45:47,535 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 17:45:47,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:45:47,535 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:45:47,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [13428878] [2022-10-17 17:45:47,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [13428878] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:45:47,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:45:47,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:45:47,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863756812] [2022-10-17 17:45:47,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:45:47,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:45:47,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:45:47,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:45:47,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:45:47,549 INFO L87 Difference]: Start difference. First operand 1631 states and 1724 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 17:45:50,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:45:50,469 INFO L93 Difference]: Finished difference Result 1668 states and 1774 transitions. [2022-10-17 17:45:50,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:45:50,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2022-10-17 17:45:50,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:45:50,479 INFO L225 Difference]: With dead ends: 1668 [2022-10-17 17:45:50,479 INFO L226 Difference]: Without dead ends: 1668 [2022-10-17 17:45:50,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 17:45:50,481 INFO L413 NwaCegarLoop]: 996 mSDtfsCounter, 1159 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-10-17 17:45:50,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1175 Valid, 1291 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-10-17 17:45:50,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2022-10-17 17:45:50,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1614. [2022-10-17 17:45:50,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 854 states have (on average 2.030444964871194) internal successors, (1734), 1605 states have internal predecessors, (1734), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-10-17 17:45:50,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 1766 transitions. [2022-10-17 17:45:50,551 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 1766 transitions. Word has length 5 [2022-10-17 17:45:50,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:45:50,552 INFO L495 AbstractCegarLoop]: Abstraction has 1614 states and 1766 transitions. [2022-10-17 17:45:50,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 17:45:50,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 1766 transitions. [2022-10-17 17:45:50,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-17 17:45:50,552 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:45:50,553 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-17 17:45:50,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-10-17 17:45:50,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:45:50,764 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2022-10-17 17:45:50,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:45:50,764 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2022-10-17 17:45:50,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:45:50,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276096278] [2022-10-17 17:45:50,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:45:50,765 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:45:50,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:45:50,766 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:45:50,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-10-17 17:45:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:45:50,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 17:45:50,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:45:50,930 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 17:45:50,953 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 17:45:50,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:45:50,955 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:45:50,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276096278] [2022-10-17 17:45:50,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1276096278] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:45:50,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:45:50,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:45:50,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144327641] [2022-10-17 17:45:50,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:45:50,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:45:50,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:45:50,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:45:50,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:45:50,967 INFO L87 Difference]: Start difference. First operand 1614 states and 1766 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 17:45:55,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:45:55,064 INFO L93 Difference]: Finished difference Result 1917 states and 2089 transitions. [2022-10-17 17:45:55,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:45:55,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2022-10-17 17:45:55,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:45:55,075 INFO L225 Difference]: With dead ends: 1917 [2022-10-17 17:45:55,076 INFO L226 Difference]: Without dead ends: 1917 [2022-10-17 17:45:55,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 17:45:55,077 INFO L413 NwaCegarLoop]: 1392 mSDtfsCounter, 504 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 2076 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:45:55,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 2076 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-10-17 17:45:55,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2022-10-17 17:45:55,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1770. [2022-10-17 17:45:55,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1770 states, 1020 states have (on average 2.0) internal successors, (2040), 1761 states have internal predecessors, (2040), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-10-17 17:45:55,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1770 states to 1770 states and 2072 transitions. [2022-10-17 17:45:55,136 INFO L78 Accepts]: Start accepts. Automaton has 1770 states and 2072 transitions. Word has length 5 [2022-10-17 17:45:55,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:45:55,136 INFO L495 AbstractCegarLoop]: Abstraction has 1770 states and 2072 transitions. [2022-10-17 17:45:55,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 17:45:55,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1770 states and 2072 transitions. [2022-10-17 17:45:55,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 17:45:55,137 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:45:55,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-17 17:45:55,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-10-17 17:45:55,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:45:55,358 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2022-10-17 17:45:55,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:45:55,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1157601995, now seen corresponding path program 1 times [2022-10-17 17:45:55,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:45:55,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [631252949] [2022-10-17 17:45:55,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:45:55,359 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:45:55,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:45:55,361 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:45:55,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-10-17 17:45:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:45:55,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 17:45:55,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:45:55,554 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 17:45:55,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:45:55,554 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:45:55,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [631252949] [2022-10-17 17:45:55,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [631252949] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:45:55,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:45:55,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:45:55,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137639613] [2022-10-17 17:45:55,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:45:55,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:45:55,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:45:55,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:45:55,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:45:55,562 INFO L87 Difference]: Start difference. First operand 1770 states and 2072 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 17:45:55,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:45:55,689 INFO L93 Difference]: Finished difference Result 3114 states and 3679 transitions. [2022-10-17 17:45:55,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:45:55,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-10-17 17:45:55,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:45:55,711 INFO L225 Difference]: With dead ends: 3114 [2022-10-17 17:45:55,712 INFO L226 Difference]: Without dead ends: 3114 [2022-10-17 17:45:55,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 17:45:55,714 INFO L413 NwaCegarLoop]: 1900 mSDtfsCounter, 1143 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 3516 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:45:55,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1149 Valid, 3516 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:45:55,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3114 states. [2022-10-17 17:45:55,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3114 to 1771. [2022-10-17 17:45:55,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1771 states, 1021 states have (on average 1.999020568070519) internal successors, (2041), 1762 states have internal predecessors, (2041), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-10-17 17:45:55,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1771 states to 1771 states and 2073 transitions. [2022-10-17 17:45:55,783 INFO L78 Accepts]: Start accepts. Automaton has 1771 states and 2073 transitions. Word has length 6 [2022-10-17 17:45:55,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:45:55,783 INFO L495 AbstractCegarLoop]: Abstraction has 1771 states and 2073 transitions. [2022-10-17 17:45:55,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 17:45:55,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1771 states and 2073 transitions. [2022-10-17 17:45:55,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 17:45:55,787 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:45:55,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:45:55,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-10-17 17:45:55,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:45:55,998 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2022-10-17 17:45:55,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:45:55,999 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2022-10-17 17:45:55,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:45:55,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [42568478] [2022-10-17 17:45:56,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:45:56,000 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:45:56,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:45:56,001 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:45:56,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-10-17 17:45:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:45:56,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 17:45:56,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:45:56,204 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 17:45:56,205 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:45:56,205 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:45:56,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [42568478] [2022-10-17 17:45:56,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [42568478] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:45:56,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:45:56,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:45:56,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626373183] [2022-10-17 17:45:56,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:45:56,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:45:56,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:45:56,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:45:56,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:45:56,207 INFO L87 Difference]: Start difference. First operand 1771 states and 2073 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:45:56,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:45:56,250 INFO L93 Difference]: Finished difference Result 1735 states and 2036 transitions. [2022-10-17 17:45:56,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:45:56,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-10-17 17:45:56,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:45:56,262 INFO L225 Difference]: With dead ends: 1735 [2022-10-17 17:45:56,262 INFO L226 Difference]: Without dead ends: 1735 [2022-10-17 17:45:56,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 17:45:56,263 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 1533 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:45:56,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 1606 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:45:56,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2022-10-17 17:45:56,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1729. [2022-10-17 17:45:56,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1729 states, 1003 states have (on average 1.992023928215354) internal successors, (1998), 1720 states have internal predecessors, (1998), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-10-17 17:45:56,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1729 states to 1729 states and 2030 transitions. [2022-10-17 17:45:56,312 INFO L78 Accepts]: Start accepts. Automaton has 1729 states and 2030 transitions. Word has length 11 [2022-10-17 17:45:56,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:45:56,313 INFO L495 AbstractCegarLoop]: Abstraction has 1729 states and 2030 transitions. [2022-10-17 17:45:56,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:45:56,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1729 states and 2030 transitions. [2022-10-17 17:45:56,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 17:45:56,314 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:45:56,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:45:56,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-10-17 17:45:56,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:45:56,532 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2022-10-17 17:45:56,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:45:56,532 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2022-10-17 17:45:56,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:45:56,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1015232983] [2022-10-17 17:45:56,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:45:56,533 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:45:56,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:45:56,535 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:45:56,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-10-17 17:45:56,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:45:56,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 17:45:56,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:45:56,755 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 17:45:56,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:45:56,757 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:45:56,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1015232983] [2022-10-17 17:45:56,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1015232983] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:45:56,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:45:56,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 17:45:56,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946337826] [2022-10-17 17:45:56,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:45:56,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:45:56,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:45:56,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:45:56,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:45:56,763 INFO L87 Difference]: Start difference. First operand 1729 states and 2030 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:45:56,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:45:56,867 INFO L93 Difference]: Finished difference Result 1714 states and 2008 transitions. [2022-10-17 17:45:56,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 17:45:56,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-10-17 17:45:56,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:45:56,879 INFO L225 Difference]: With dead ends: 1714 [2022-10-17 17:45:56,879 INFO L226 Difference]: Without dead ends: 1714 [2022-10-17 17:45:56,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:45:56,881 INFO L413 NwaCegarLoop]: 1528 mSDtfsCounter, 1504 mSDsluCounter, 1554 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 3082 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:45:56,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 3082 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:45:56,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2022-10-17 17:45:56,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 1707. [2022-10-17 17:45:56,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 995 states have (on average 1.9788944723618092) internal successors, (1969), 1698 states have internal predecessors, (1969), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-10-17 17:45:56,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2001 transitions. [2022-10-17 17:45:56,937 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2001 transitions. Word has length 13 [2022-10-17 17:45:56,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:45:56,938 INFO L495 AbstractCegarLoop]: Abstraction has 1707 states and 2001 transitions. [2022-10-17 17:45:56,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:45:56,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2001 transitions. [2022-10-17 17:45:56,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-17 17:45:56,939 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:45:56,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:45:56,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-10-17 17:45:57,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:45:57,152 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2022-10-17 17:45:57,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:45:57,153 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2022-10-17 17:45:57,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:45:57,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [194409549] [2022-10-17 17:45:57,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:45:57,154 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:45:57,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:45:57,155 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:45:57,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-10-17 17:45:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:45:57,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 17:45:57,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:45:57,367 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 17:45:57,472 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 17:45:57,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:45:57,473 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:45:57,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [194409549] [2022-10-17 17:45:57,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [194409549] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:45:57,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:45:57,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:45:57,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108307475] [2022-10-17 17:45:57,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:45:57,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:45:57,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:45:57,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:45:57,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:45:57,477 INFO L87 Difference]: Start difference. First operand 1707 states and 2001 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 17:46:01,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:46:01,910 INFO L93 Difference]: Finished difference Result 2520 states and 2820 transitions. [2022-10-17 17:46:01,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 17:46:01,910 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2022-10-17 17:46:01,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:46:01,921 INFO L225 Difference]: With dead ends: 2520 [2022-10-17 17:46:01,921 INFO L226 Difference]: Without dead ends: 2520 [2022-10-17 17:46:01,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:46:01,923 INFO L413 NwaCegarLoop]: 958 mSDtfsCounter, 2761 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 1772 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2774 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-10-17 17:46:01,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2774 Valid, 1876 Invalid, 1833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1772 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-10-17 17:46:01,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2520 states. [2022-10-17 17:46:01,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2520 to 1703. [2022-10-17 17:46:01,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1703 states, 995 states have (on average 1.9748743718592965) internal successors, (1965), 1694 states have internal predecessors, (1965), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-10-17 17:46:01,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 1997 transitions. [2022-10-17 17:46:01,971 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 1997 transitions. Word has length 27 [2022-10-17 17:46:01,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:46:01,971 INFO L495 AbstractCegarLoop]: Abstraction has 1703 states and 1997 transitions. [2022-10-17 17:46:01,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 17:46:01,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 1997 transitions. [2022-10-17 17:46:01,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-17 17:46:01,972 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:46:01,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:46:01,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-10-17 17:46:02,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:46:02,185 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2022-10-17 17:46:02,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:46:02,186 INFO L85 PathProgramCache]: Analyzing trace with hash -22216186, now seen corresponding path program 1 times [2022-10-17 17:46:02,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:46:02,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281364716] [2022-10-17 17:46:02,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:46:02,187 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:46:02,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:46:02,188 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:46:02,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba39614-be2d-4920-8f59-d5d67f6c61b1/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-10-17 17:46:02,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:46:02,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 17:46:02,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:46:02,400 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 17:46:02,558 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 17:46:02,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:46:02,559 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:46:02,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281364716] [2022-10-17 17:46:02,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281364716] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:46:02,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:46:02,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:46:02,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801686494] [2022-10-17 17:46:02,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:46:02,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:46:02,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:46:02,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:46:02,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:46:02,561 INFO L87 Difference]: Start difference. First operand 1703 states and 1997 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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)