./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI --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 23c0dee81707c82be8d9645ea65556f17c2a25b7864c310b805b07f657c0bc23 --- 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-5e519f3 [2022-11-03 03:55:22,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:55:22,883 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:55:22,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:55:22,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:55:22,920 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:55:22,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:55:22,924 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:55:22,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:55:22,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:55:22,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:55:22,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:55:22,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:55:22,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:55:22,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:55:22,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:55:22,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:55:22,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:55:22,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:55:22,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:55:22,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:55:22,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:55:22,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:55:22,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:55:22,957 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:55:22,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:55:22,958 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:55:22,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:55:22,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:55:22,961 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:55:22,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:55:22,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:55:22,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:55:22,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:55:22,967 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:55:22,968 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:55:22,969 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:55:22,969 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:55:22,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:55:22,972 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:55:22,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:55:22,974 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-03 03:55:23,004 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:55:23,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:55:23,005 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:55:23,005 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:55:23,006 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:55:23,007 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:55:23,007 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:55:23,008 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:55:23,008 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:55:23,008 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:55:23,009 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:55:23,009 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:55:23,009 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:55:23,010 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:55:23,010 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:55:23,011 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:55:23,011 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:55:23,011 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:55:23,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-03 03:55:23,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-03 03:55:23,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:55:23,014 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:55:23,014 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 03:55:23,014 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:55:23,015 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:55:23,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:55:23,016 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-03 03:55:23,016 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-03 03:55:23,016 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-03 03:55:23,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:55:23,017 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 03:55:23,018 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:55:23,018 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:55:23,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:55:23,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:55:23,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:55:23,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:55:23,020 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:55:23,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:55:23,021 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:55:23,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:55:23,021 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:55:23,022 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_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23c0dee81707c82be8d9645ea65556f17c2a25b7864c310b805b07f657c0bc23 [2022-11-03 03:55:23,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:55:23,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:55:23,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:55:23,415 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:55:23,416 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:55:23,418 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i [2022-11-03 03:55:23,536 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/data/4d5f97f37/c41d247b6d104892899c0994c04a7181/FLAGa6d4f57d7 [2022-11-03 03:55:24,245 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:55:24,255 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i [2022-11-03 03:55:24,291 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/data/4d5f97f37/c41d247b6d104892899c0994c04a7181/FLAGa6d4f57d7 [2022-11-03 03:55:24,428 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/data/4d5f97f37/c41d247b6d104892899c0994c04a7181 [2022-11-03 03:55:24,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:55:24,433 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:55:24,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:55:24,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:55:24,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:55:24,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:55:24" (1/1) ... [2022-11-03 03:55:24,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6edefd07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:24, skipping insertion in model container [2022-11-03 03:55:24,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:55:24" (1/1) ... [2022-11-03 03:55:24,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:55:24,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:55:25,153 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_c2cea182-f714-4477-b440-59991bf5c969/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i[33021,33034] [2022-11-03 03:55:25,306 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_c2cea182-f714-4477-b440-59991bf5c969/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i[44124,44137] [2022-11-03 03:55:25,307 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_c2cea182-f714-4477-b440-59991bf5c969/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i[44245,44258] [2022-11-03 03:55:25,316 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:55:25,328 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) [2022-11-03 03:55:25,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@24ba1d5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:25, skipping insertion in model container [2022-11-03 03:55:25,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:55:25,329 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-03 03:55:25,331 INFO L158 Benchmark]: Toolchain (without parser) took 897.75ms. Allocated memory is still 111.1MB. Free memory was 75.8MB in the beginning and 75.6MB in the end (delta: 188.1kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 03:55:25,332 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 111.1MB. Free memory was 63.8MB in the beginning and 63.8MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:55:25,333 INFO L158 Benchmark]: CACSL2BoogieTranslator took 894.53ms. Allocated memory is still 111.1MB. Free memory was 75.6MB in the beginning and 75.6MB in the end (delta: -34.1kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 03:55:25,335 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 111.1MB. Free memory was 63.8MB in the beginning and 63.8MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 894.53ms. Allocated memory is still 111.1MB. Free memory was 75.6MB in the beginning and 75.6MB in the end (delta: -34.1kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 716]: 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/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI --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 23c0dee81707c82be8d9645ea65556f17c2a25b7864c310b805b07f657c0bc23 --- 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-5e519f3 [2022-11-03 03:55:27,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:55:27,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:55:28,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:55:28,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:55:28,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:55:28,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:55:28,040 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:55:28,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:55:28,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:55:28,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:55:28,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:55:28,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:55:28,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:55:28,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:55:28,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:55:28,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:55:28,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:55:28,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:55:28,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:55:28,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:55:28,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:55:28,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:55:28,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:55:28,072 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:55:28,073 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:55:28,073 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:55:28,074 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:55:28,075 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:55:28,077 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:55:28,077 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:55:28,078 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:55:28,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:55:28,081 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:55:28,082 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:55:28,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:55:28,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:55:28,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:55:28,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:55:28,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:55:28,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:55:28,088 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-03 03:55:28,133 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:55:28,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:55:28,133 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:55:28,134 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:55:28,135 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:55:28,135 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:55:28,135 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:55:28,136 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:55:28,136 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:55:28,136 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:55:28,137 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:55:28,137 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:55:28,138 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-03 03:55:28,138 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-03 03:55:28,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:55:28,139 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:55:28,139 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 03:55:28,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:55:28,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:55:28,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:55:28,140 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-03 03:55:28,141 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-03 03:55:28,141 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-03 03:55:28,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:55:28,141 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 03:55:28,142 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 03:55:28,142 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 03:55:28,142 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:55:28,143 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:55:28,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:55:28,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 03:55:28,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:55:28,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:55:28,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:55:28,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:55:28,145 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 03:55:28,145 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 03:55:28,145 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:55:28,146 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 03:55:28,146 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_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23c0dee81707c82be8d9645ea65556f17c2a25b7864c310b805b07f657c0bc23 [2022-11-03 03:55:28,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:55:28,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:55:28,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:55:28,652 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:55:28,653 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:55:28,656 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i [2022-11-03 03:55:28,745 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/data/71cd7193e/dab18e36771342419adf5085c6480d4c/FLAG417732484 [2022-11-03 03:55:29,644 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:55:29,645 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i [2022-11-03 03:55:29,662 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/data/71cd7193e/dab18e36771342419adf5085c6480d4c/FLAG417732484 [2022-11-03 03:55:29,679 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/data/71cd7193e/dab18e36771342419adf5085c6480d4c [2022-11-03 03:55:29,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:55:29,683 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:55:29,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:55:29,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:55:29,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:55:29,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:55:29" (1/1) ... [2022-11-03 03:55:29,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c855b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:29, skipping insertion in model container [2022-11-03 03:55:29,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:55:29" (1/1) ... [2022-11-03 03:55:29,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:55:29,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:55:30,433 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_c2cea182-f714-4477-b440-59991bf5c969/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i[33021,33034] [2022-11-03 03:55:30,639 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_c2cea182-f714-4477-b440-59991bf5c969/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i[44124,44137] [2022-11-03 03:55:30,650 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_c2cea182-f714-4477-b440-59991bf5c969/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i[44245,44258] [2022-11-03 03:55:30,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:55:30,684 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-03 03:55:30,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:55:30,744 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_c2cea182-f714-4477-b440-59991bf5c969/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i[33021,33034] [2022-11-03 03:55:30,807 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_c2cea182-f714-4477-b440-59991bf5c969/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i[44124,44137] [2022-11-03 03:55:30,808 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_c2cea182-f714-4477-b440-59991bf5c969/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i[44245,44258] [2022-11-03 03:55:30,811 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:55:30,817 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:55:30,847 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_c2cea182-f714-4477-b440-59991bf5c969/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i[33021,33034] [2022-11-03 03:55:30,929 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_c2cea182-f714-4477-b440-59991bf5c969/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i[44124,44137] [2022-11-03 03:55:30,930 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_c2cea182-f714-4477-b440-59991bf5c969/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i[44245,44258] [2022-11-03 03:55:30,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:55:30,980 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:55:30,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:30 WrapperNode [2022-11-03 03:55:30,981 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:55:30,982 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:55:30,983 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:55:30,983 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:55:30,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:30" (1/1) ... [2022-11-03 03:55:31,060 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:30" (1/1) ... [2022-11-03 03:55:31,156 INFO L138 Inliner]: procedures = 179, calls = 277, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1011 [2022-11-03 03:55:31,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:55:31,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:55:31,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:55:31,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:55:31,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:30" (1/1) ... [2022-11-03 03:55:31,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:30" (1/1) ... [2022-11-03 03:55:31,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:30" (1/1) ... [2022-11-03 03:55:31,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:30" (1/1) ... [2022-11-03 03:55:31,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:30" (1/1) ... [2022-11-03 03:55:31,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:30" (1/1) ... [2022-11-03 03:55:31,331 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:30" (1/1) ... [2022-11-03 03:55:31,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:30" (1/1) ... [2022-11-03 03:55:31,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:55:31,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:55:31,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:55:31,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:55:31,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:30" (1/1) ... [2022-11-03 03:55:31,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:55:31,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:55:31,405 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:55:31,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:55:31,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-03 03:55:31,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-03 03:55:31,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 03:55:31,451 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 03:55:31,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:55:31,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:55:31,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:55:31,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:55:31,453 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-03 03:55:31,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:55:31,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:55:31,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-03 03:55:31,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 03:55:31,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:55:31,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:55:31,722 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:55:31,725 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:55:31,730 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 03:55:38,415 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:55:38,431 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:55:38,431 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-11-03 03:55:38,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:55:38 BoogieIcfgContainer [2022-11-03 03:55:38,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:55:38,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:55:38,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:55:38,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:55:38,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:55:29" (1/3) ... [2022-11-03 03:55:38,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71742737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:55:38, skipping insertion in model container [2022-11-03 03:55:38,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:55:30" (2/3) ... [2022-11-03 03:55:38,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71742737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:55:38, skipping insertion in model container [2022-11-03 03:55:38,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:55:38" (3/3) ... [2022-11-03 03:55:38,448 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test7-1.i [2022-11-03 03:55:38,473 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:55:38,474 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 530 error locations. [2022-11-03 03:55:38,578 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:55:38,591 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;@12f40b00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:55:38,591 INFO L358 AbstractCegarLoop]: Starting to check reachability of 530 error locations. [2022-11-03 03:55:38,604 INFO L276 IsEmpty]: Start isEmpty. Operand has 1050 states, 518 states have (on average 2.2548262548262548) internal successors, (1168), 1045 states have internal predecessors, (1168), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 03:55:38,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-03 03:55:38,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:38,614 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-03 03:55:38,615 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-03 03:55:38,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:38,624 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2022-11-03 03:55:38,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:55:38,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [319204489] [2022-11-03 03:55:38,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:38,642 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:55:38,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:55:38,651 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:55:38,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 03:55:38,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:38,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:55:38,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:38,991 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 [2022-11-03 03:55:39,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:55:39,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:55:39,044 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:55:39,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [319204489] [2022-11-03 03:55:39,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [319204489] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:39,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:39,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:55:39,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133767686] [2022-11-03 03:55:39,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:39,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:55:39,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:55:39,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:55:39,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:55:39,137 INFO L87 Difference]: Start difference. First operand has 1050 states, 518 states have (on average 2.2548262548262548) internal successors, (1168), 1045 states have internal predecessors, (1168), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:55:41,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:41,613 INFO L93 Difference]: Finished difference Result 1041 states and 1096 transitions. [2022-11-03 03:55:41,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:55:41,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-03 03:55:41,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:41,643 INFO L225 Difference]: With dead ends: 1041 [2022-11-03 03:55:41,644 INFO L226 Difference]: Without dead ends: 1039 [2022-11-03 03:55:41,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:55:41,650 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 969 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:41,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 670 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-03 03:55:41,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2022-11-03 03:55:41,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1031. [2022-11-03 03:55:41,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 516 states have (on average 2.0949612403100777) internal successors, (1081), 1026 states have internal predecessors, (1081), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 03:55:41,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1087 transitions. [2022-11-03 03:55:41,767 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1087 transitions. Word has length 3 [2022-11-03 03:55:41,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:41,768 INFO L495 AbstractCegarLoop]: Abstraction has 1031 states and 1087 transitions. [2022-11-03 03:55:41,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:55:41,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1087 transitions. [2022-11-03 03:55:41,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-03 03:55:41,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:41,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-03 03:55:41,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:55:41,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:55:41,983 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-03 03:55:41,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:41,984 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2022-11-03 03:55:41,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:55:41,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689663106] [2022-11-03 03:55:41,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:41,985 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:55:41,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:55:41,990 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:55:41,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 03:55:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:42,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:55:42,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:42,188 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 [2022-11-03 03:55:42,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:55:42,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:55:42,215 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:55:42,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689663106] [2022-11-03 03:55:42,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1689663106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:42,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:42,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:55:42,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208641732] [2022-11-03 03:55:42,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:42,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:55:42,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:55:42,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:55:42,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:55:42,225 INFO L87 Difference]: Start difference. First operand 1031 states and 1087 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:55:46,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:46,333 INFO L93 Difference]: Finished difference Result 1421 states and 1506 transitions. [2022-11-03 03:55:46,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:55:46,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-03 03:55:46,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:46,340 INFO L225 Difference]: With dead ends: 1421 [2022-11-03 03:55:46,340 INFO L226 Difference]: Without dead ends: 1421 [2022-11-03 03:55:46,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:55:46,342 INFO L413 NwaCegarLoop]: 898 mSDtfsCounter, 419 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:46,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 1462 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-03 03:55:46,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1421 states. [2022-11-03 03:55:46,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1421 to 1232. [2022-11-03 03:55:46,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 718 states have (on average 2.0807799442896937) internal successors, (1494), 1227 states have internal predecessors, (1494), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 03:55:46,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1500 transitions. [2022-11-03 03:55:46,402 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1500 transitions. Word has length 3 [2022-11-03 03:55:46,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:46,403 INFO L495 AbstractCegarLoop]: Abstraction has 1232 states and 1500 transitions. [2022-11-03 03:55:46,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:55:46,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1500 transitions. [2022-11-03 03:55:46,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 03:55:46,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:46,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:55:46,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:55:46,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:55:46,623 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-03 03:55:46,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:46,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1466973012, now seen corresponding path program 1 times [2022-11-03 03:55:46,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:55:46,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1159105953] [2022-11-03 03:55:46,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:46,625 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:55:46,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:55:46,628 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:55:46,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 03:55:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:46,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 03:55:46,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:46,831 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 [2022-11-03 03:55:46,840 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 [2022-11-03 03:55:46,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:55:46,947 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-03 03:55:46,966 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-03 03:55:46,967 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-03 03:55:47,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:55:47,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:55:47,005 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:55:47,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1159105953] [2022-11-03 03:55:47,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1159105953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:47,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:47,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:55:47,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083941179] [2022-11-03 03:55:47,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:47,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:55:47,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:55:47,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:55:47,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:55:47,011 INFO L87 Difference]: Start difference. First operand 1232 states and 1500 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:55:50,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:50,726 INFO L93 Difference]: Finished difference Result 1233 states and 1503 transitions. [2022-11-03 03:55:50,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:55:50,727 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 03:55:50,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:50,732 INFO L225 Difference]: With dead ends: 1233 [2022-11-03 03:55:50,732 INFO L226 Difference]: Without dead ends: 1233 [2022-11-03 03:55:50,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:55:50,734 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 2009 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2012 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:50,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2012 Valid, 377 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-03 03:55:50,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2022-11-03 03:55:50,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1020. [2022-11-03 03:55:50,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 516 states have (on average 2.0717054263565893) internal successors, (1069), 1015 states have internal predecessors, (1069), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 03:55:50,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1075 transitions. [2022-11-03 03:55:50,762 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1075 transitions. Word has length 7 [2022-11-03 03:55:50,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:50,763 INFO L495 AbstractCegarLoop]: Abstraction has 1020 states and 1075 transitions. [2022-11-03 03:55:50,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:55:50,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1075 transitions. [2022-11-03 03:55:50,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 03:55:50,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:50,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:55:50,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:55:50,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:55:50,979 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-03 03:55:50,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:50,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2022-11-03 03:55:50,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:55:50,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127211557] [2022-11-03 03:55:50,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:50,982 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:55:50,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:55:50,983 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:55:50,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 03:55:51,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:51,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:55:51,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:51,141 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 [2022-11-03 03:55:51,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:55:51,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:55:51,157 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:55:51,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127211557] [2022-11-03 03:55:51,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127211557] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:51,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:51,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:55:51,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101264027] [2022-11-03 03:55:51,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:51,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:55:51,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:55:51,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:55:51,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:55:51,160 INFO L87 Difference]: Start difference. First operand 1020 states and 1075 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:55:54,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:54,091 INFO L93 Difference]: Finished difference Result 1349 states and 1433 transitions. [2022-11-03 03:55:54,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:55:54,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-03 03:55:54,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:54,098 INFO L225 Difference]: With dead ends: 1349 [2022-11-03 03:55:54,102 INFO L226 Difference]: Without dead ends: 1349 [2022-11-03 03:55:54,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:55:54,112 INFO L413 NwaCegarLoop]: 923 mSDtfsCounter, 973 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:54,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 1165 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-03 03:55:54,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2022-11-03 03:55:54,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 973. [2022-11-03 03:55:54,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 516 states have (on average 1.9806201550387597) internal successors, (1022), 968 states have internal predecessors, (1022), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 03:55:54,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1028 transitions. [2022-11-03 03:55:54,144 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1028 transitions. Word has length 8 [2022-11-03 03:55:54,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:54,145 INFO L495 AbstractCegarLoop]: Abstraction has 973 states and 1028 transitions. [2022-11-03 03:55:54,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:55:54,146 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1028 transitions. [2022-11-03 03:55:54,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 03:55:54,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:54,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:55:54,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:55:54,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:55:54,359 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-03 03:55:54,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:54,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2022-11-03 03:55:54,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:55:54,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285631427] [2022-11-03 03:55:54,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:54,361 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:55:54,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:55:54,362 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:55:54,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 03:55:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:54,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:55:54,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:54,543 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 [2022-11-03 03:55:54,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:55:54,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:55:54,574 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:55:54,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [285631427] [2022-11-03 03:55:54,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [285631427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:54,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:54,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:55:54,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051074836] [2022-11-03 03:55:54,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:54,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:55:54,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:55:54,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:55:54,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:55:54,577 INFO L87 Difference]: Start difference. First operand 973 states and 1028 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:55:58,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:58,550 INFO L93 Difference]: Finished difference Result 1428 states and 1515 transitions. [2022-11-03 03:55:58,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:55:58,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-03 03:55:58,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:58,557 INFO L225 Difference]: With dead ends: 1428 [2022-11-03 03:55:58,557 INFO L226 Difference]: Without dead ends: 1428 [2022-11-03 03:55:58,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:55:58,559 INFO L413 NwaCegarLoop]: 1129 mSDtfsCounter, 674 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:58,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 1542 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-03 03:55:58,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2022-11-03 03:55:58,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 995. [2022-11-03 03:55:58,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 548 states have (on average 1.967153284671533) internal successors, (1078), 990 states have internal predecessors, (1078), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 03:55:58,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1084 transitions. [2022-11-03 03:55:58,595 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1084 transitions. Word has length 8 [2022-11-03 03:55:58,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:58,595 INFO L495 AbstractCegarLoop]: Abstraction has 995 states and 1084 transitions. [2022-11-03 03:55:58,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:55:58,596 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1084 transitions. [2022-11-03 03:55:58,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 03:55:58,596 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:58,597 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:55:58,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 03:55:58,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:55:58,820 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr526ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-03 03:55:58,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:58,821 INFO L85 PathProgramCache]: Analyzing trace with hash 871378613, now seen corresponding path program 1 times [2022-11-03 03:55:58,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:55:58,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286794928] [2022-11-03 03:55:58,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:58,821 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:55:58,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:55:58,823 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:55:58,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 03:55:59,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:59,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:55:59,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:59,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:55:59,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:55:59,122 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:55:59,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286794928] [2022-11-03 03:55:59,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286794928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:59,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:59,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:55:59,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278033652] [2022-11-03 03:55:59,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:59,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:55:59,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:55:59,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:55:59,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:55:59,127 INFO L87 Difference]: Start difference. First operand 995 states and 1084 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:56:00,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:00,083 INFO L93 Difference]: Finished difference Result 1446 states and 1568 transitions. [2022-11-03 03:56:00,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:56:00,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-03 03:56:00,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:00,089 INFO L225 Difference]: With dead ends: 1446 [2022-11-03 03:56:00,089 INFO L226 Difference]: Without dead ends: 1446 [2022-11-03 03:56:00,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:56:00,090 INFO L413 NwaCegarLoop]: 1080 mSDtfsCounter, 548 mSDsluCounter, 1845 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 2925 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:00,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 2925 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 03:56:00,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2022-11-03 03:56:00,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1236. [2022-11-03 03:56:00,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 789 states have (on average 1.944233206590621) internal successors, (1534), 1231 states have internal predecessors, (1534), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 03:56:00,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1540 transitions. [2022-11-03 03:56:00,125 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1540 transitions. Word has length 11 [2022-11-03 03:56:00,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:00,125 INFO L495 AbstractCegarLoop]: Abstraction has 1236 states and 1540 transitions. [2022-11-03 03:56:00,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:56:00,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1540 transitions. [2022-11-03 03:56:00,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 03:56:00,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:00,127 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:56:00,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 03:56:00,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:56:00,342 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr529ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-03 03:56:00,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:00,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1242933253, now seen corresponding path program 1 times [2022-11-03 03:56:00,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:56:00,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1014039813] [2022-11-03 03:56:00,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:00,343 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:56:00,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:56:00,345 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:56:00,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 03:56:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:00,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 03:56:00,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:00,579 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:56:00,580 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:56:00,608 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 29 treesize of output 38 [2022-11-03 03:56:00,673 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:56:00,673 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 22 [2022-11-03 03:56:00,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:56:00,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:56:00,729 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:56:00,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1014039813] [2022-11-03 03:56:00,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1014039813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:56:00,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:56:00,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:56:00,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522671993] [2022-11-03 03:56:00,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:56:00,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:56:00,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:56:00,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:56:00,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:56:00,731 INFO L87 Difference]: Start difference. First operand 1236 states and 1540 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-11-03 03:56:02,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:02,494 INFO L93 Difference]: Finished difference Result 1592 states and 1955 transitions. [2022-11-03 03:56:02,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:56:02,495 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2022-11-03 03:56:02,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:02,502 INFO L225 Difference]: With dead ends: 1592 [2022-11-03 03:56:02,502 INFO L226 Difference]: Without dead ends: 1592 [2022-11-03 03:56:02,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:56:02,503 INFO L413 NwaCegarLoop]: 967 mSDtfsCounter, 352 mSDsluCounter, 1868 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 2835 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:02,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 2835 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 196 Invalid, 0 Unknown, 48 Unchecked, 1.7s Time] [2022-11-03 03:56:02,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2022-11-03 03:56:02,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1235. [2022-11-03 03:56:02,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 788 states have (on average 1.9441624365482233) internal successors, (1532), 1230 states have internal predecessors, (1532), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 03:56:02,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1538 transitions. [2022-11-03 03:56:02,536 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1538 transitions. Word has length 12 [2022-11-03 03:56:02,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:02,537 INFO L495 AbstractCegarLoop]: Abstraction has 1235 states and 1538 transitions. [2022-11-03 03:56:02,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-11-03 03:56:02,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1538 transitions. [2022-11-03 03:56:02,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 03:56:02,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:02,538 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:56:02,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 03:56:02,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:56:02,752 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-03 03:56:02,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:02,752 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2022-11-03 03:56:02,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:56:02,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967997356] [2022-11-03 03:56:02,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:02,753 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:56:02,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:56:02,755 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:56:02,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 03:56:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:02,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:56:03,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:03,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:56:03,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:56:03,017 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:56:03,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967997356] [2022-11-03 03:56:03,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1967997356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:56:03,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:56:03,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:56:03,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377651577] [2022-11-03 03:56:03,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:56:03,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:56:03,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:56:03,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:56:03,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:56:03,020 INFO L87 Difference]: Start difference. First operand 1235 states and 1538 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2022-11-03 03:56:03,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:03,058 INFO L93 Difference]: Finished difference Result 1175 states and 1452 transitions. [2022-11-03 03:56:03,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:56:03,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2022-11-03 03:56:03,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:03,064 INFO L225 Difference]: With dead ends: 1175 [2022-11-03 03:56:03,064 INFO L226 Difference]: Without dead ends: 1175 [2022-11-03 03:56:03,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:56:03,066 INFO L413 NwaCegarLoop]: 971 mSDtfsCounter, 955 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 993 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 [2022-11-03 03:56:03,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [958 Valid, 993 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:56:03,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2022-11-03 03:56:03,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1175. [2022-11-03 03:56:03,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 752 states have (on average 1.922872340425532) internal successors, (1446), 1170 states have internal predecessors, (1446), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 03:56:03,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1452 transitions. [2022-11-03 03:56:03,096 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1452 transitions. Word has length 18 [2022-11-03 03:56:03,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:03,096 INFO L495 AbstractCegarLoop]: Abstraction has 1175 states and 1452 transitions. [2022-11-03 03:56:03,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2022-11-03 03:56:03,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1452 transitions. [2022-11-03 03:56:03,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:56:03,098 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:03,099 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] [2022-11-03 03:56:03,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 03:56:03,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:56:03,315 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-03 03:56:03,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:03,315 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2022-11-03 03:56:03,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:56:03,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1954459820] [2022-11-03 03:56:03,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:03,316 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:56:03,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:56:03,318 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:56:03,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 03:56:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:03,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:56:03,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:03,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:56:03,590 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:56:03,590 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:56:03,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1954459820] [2022-11-03 03:56:03,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1954459820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:56:03,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:56:03,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:56:03,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429669779] [2022-11-03 03:56:03,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:56:03,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:56:03,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:56:03,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:56:03,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:56:03,594 INFO L87 Difference]: Start difference. First operand 1175 states and 1452 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:56:03,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:03,706 INFO L93 Difference]: Finished difference Result 1147 states and 1396 transitions. [2022-11-03 03:56:03,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:56:03,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-03 03:56:03,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:03,711 INFO L225 Difference]: With dead ends: 1147 [2022-11-03 03:56:03,712 INFO L226 Difference]: Without dead ends: 1147 [2022-11-03 03:56:03,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:56:03,715 INFO L413 NwaCegarLoop]: 926 mSDtfsCounter, 926 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 1867 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 [2022-11-03 03:56:03,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 1867 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:56:03,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2022-11-03 03:56:03,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1145. [2022-11-03 03:56:03,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1145 states, 736 states have (on average 1.8858695652173914) internal successors, (1388), 1140 states have internal predecessors, (1388), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 03:56:03,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1394 transitions. [2022-11-03 03:56:03,745 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1394 transitions. Word has length 20 [2022-11-03 03:56:03,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:03,745 INFO L495 AbstractCegarLoop]: Abstraction has 1145 states and 1394 transitions. [2022-11-03 03:56:03,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:56:03,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1394 transitions. [2022-11-03 03:56:03,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 03:56:03,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:03,747 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:56:03,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 03:56:03,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:56:03,962 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-03 03:56:03,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:03,963 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2022-11-03 03:56:03,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:56:03,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044772962] [2022-11-03 03:56:03,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:03,964 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:56:03,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:56:03,972 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:56:04,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 03:56:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:04,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:56:04,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:04,220 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 [2022-11-03 03:56:04,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:56:04,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:56:04,326 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:56:04,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2044772962] [2022-11-03 03:56:04,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2044772962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:56:04,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:56:04,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:56:04,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963188476] [2022-11-03 03:56:04,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:56:04,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:56:04,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:56:04,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:56:04,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:56:04,329 INFO L87 Difference]: Start difference. First operand 1145 states and 1394 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2022-11-03 03:56:07,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:07,556 INFO L93 Difference]: Finished difference Result 1606 states and 1976 transitions. [2022-11-03 03:56:07,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:56:07,558 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2022-11-03 03:56:07,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:07,561 INFO L225 Difference]: With dead ends: 1606 [2022-11-03 03:56:07,562 INFO L226 Difference]: Without dead ends: 1606 [2022-11-03 03:56:07,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:56:07,562 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 1679 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1679 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:07,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1679 Valid, 1004 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-03 03:56:07,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2022-11-03 03:56:07,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1141. [2022-11-03 03:56:07,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 736 states have (on average 1.875) internal successors, (1380), 1136 states have internal predecessors, (1380), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 03:56:07,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1386 transitions. [2022-11-03 03:56:07,591 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1386 transitions. Word has length 34 [2022-11-03 03:56:07,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:07,592 INFO L495 AbstractCegarLoop]: Abstraction has 1141 states and 1386 transitions. [2022-11-03 03:56:07,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2022-11-03 03:56:07,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1386 transitions. [2022-11-03 03:56:07,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 03:56:07,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:07,594 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:56:07,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 03:56:07,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:56:07,810 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-03 03:56:07,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:07,811 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2022-11-03 03:56:07,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:56:07,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570547129] [2022-11-03 03:56:07,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:07,812 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:56:07,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:56:07,813 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:56:07,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 03:56:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:08,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:56:08,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:08,052 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 [2022-11-03 03:56:08,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:56:08,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:56:08,308 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:56:08,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570547129] [2022-11-03 03:56:08,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1570547129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:56:08,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:56:08,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:56:08,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404728691] [2022-11-03 03:56:08,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:56:08,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:56:08,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:56:08,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:56:08,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:56:08,310 INFO L87 Difference]: Start difference. First operand 1141 states and 1386 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2022-11-03 03:56:13,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:13,236 INFO L93 Difference]: Finished difference Result 1742 states and 2136 transitions. [2022-11-03 03:56:13,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:56:13,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2022-11-03 03:56:13,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:13,244 INFO L225 Difference]: With dead ends: 1742 [2022-11-03 03:56:13,244 INFO L226 Difference]: Without dead ends: 1742 [2022-11-03 03:56:13,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:56:13,245 INFO L413 NwaCegarLoop]: 1175 mSDtfsCounter, 1158 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 2013 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:13,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 2013 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-03 03:56:13,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2022-11-03 03:56:13,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1137. [2022-11-03 03:56:13,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 736 states have (on average 1.8641304347826086) internal successors, (1372), 1132 states have internal predecessors, (1372), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 03:56:13,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1378 transitions. [2022-11-03 03:56:13,272 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1378 transitions. Word has length 34 [2022-11-03 03:56:13,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:13,273 INFO L495 AbstractCegarLoop]: Abstraction has 1137 states and 1378 transitions. [2022-11-03 03:56:13,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2022-11-03 03:56:13,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1378 transitions. [2022-11-03 03:56:13,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-03 03:56:13,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:13,275 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, 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] [2022-11-03 03:56:13,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-11-03 03:56:13,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:56:13,498 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-03 03:56:13,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:13,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2022-11-03 03:56:13,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:56:13,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [102417950] [2022-11-03 03:56:13,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:13,500 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:56:13,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:56:13,501 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:56:13,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-03 03:56:13,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:13,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:56:13,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:13,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:56:13,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:56:13,918 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:56:13,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [102417950] [2022-11-03 03:56:13,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [102417950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:56:13,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:56:13,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:56:13,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686913582] [2022-11-03 03:56:13,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:56:13,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:56:13,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:56:13,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:56:13,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:56:13,920 INFO L87 Difference]: Start difference. First operand 1137 states and 1378 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2022-11-03 03:56:14,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:14,010 INFO L93 Difference]: Finished difference Result 1125 states and 1358 transitions. [2022-11-03 03:56:14,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:56:14,011 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 52 [2022-11-03 03:56:14,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:14,016 INFO L225 Difference]: With dead ends: 1125 [2022-11-03 03:56:14,016 INFO L226 Difference]: Without dead ends: 1125 [2022-11-03 03:56:14,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:56:14,017 INFO L413 NwaCegarLoop]: 920 mSDtfsCounter, 902 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:14,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 1845 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:56:14,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2022-11-03 03:56:14,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1125. [2022-11-03 03:56:14,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1125 states, 724 states have (on average 1.867403314917127) internal successors, (1352), 1120 states have internal predecessors, (1352), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 03:56:14,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1358 transitions. [2022-11-03 03:56:14,040 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1358 transitions. Word has length 52 [2022-11-03 03:56:14,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:14,041 INFO L495 AbstractCegarLoop]: Abstraction has 1125 states and 1358 transitions. [2022-11-03 03:56:14,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2022-11-03 03:56:14,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1358 transitions. [2022-11-03 03:56:14,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-03 03:56:14,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:14,046 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, 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, 1, 1, 1, 1, 1, 1] [2022-11-03 03:56:14,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-03 03:56:14,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:56:14,265 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-03 03:56:14,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:14,266 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2022-11-03 03:56:14,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:56:14,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1642156109] [2022-11-03 03:56:14,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:14,267 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:56:14,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:56:14,268 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:56:14,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 03:56:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:14,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 03:56:14,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:14,735 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 [2022-11-03 03:56:14,745 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 [2022-11-03 03:56:15,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:56:15,439 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-03 03:56:15,464 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-03 03:56:15,464 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-03 03:56:15,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:56:15,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:56:15,482 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:56:15,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1642156109] [2022-11-03 03:56:15,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1642156109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:56:15,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:56:15,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:56:15,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557319900] [2022-11-03 03:56:15,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:56:15,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:56:15,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:56:15,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:56:15,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:56:15,484 INFO L87 Difference]: Start difference. First operand 1125 states and 1358 transitions. Second operand has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2022-11-03 03:56:19,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:19,347 INFO L93 Difference]: Finished difference Result 1537 states and 1895 transitions. [2022-11-03 03:56:19,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:56:19,349 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 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 60 [2022-11-03 03:56:19,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:19,352 INFO L225 Difference]: With dead ends: 1537 [2022-11-03 03:56:19,352 INFO L226 Difference]: Without dead ends: 1537 [2022-11-03 03:56:19,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:56:19,353 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 2043 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2046 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:19,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2046 Valid, 462 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-03 03:56:19,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2022-11-03 03:56:19,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 1055. [2022-11-03 03:56:19,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 692 states have (on average 1.8034682080924855) internal successors, (1248), 1050 states have internal predecessors, (1248), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 03:56:19,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1254 transitions. [2022-11-03 03:56:19,374 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1254 transitions. Word has length 60 [2022-11-03 03:56:19,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:19,375 INFO L495 AbstractCegarLoop]: Abstraction has 1055 states and 1254 transitions. [2022-11-03 03:56:19,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2022-11-03 03:56:19,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1254 transitions. [2022-11-03 03:56:19,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 03:56:19,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:19,377 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:56:19,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-03 03:56:19,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:56:19,592 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-03 03:56:19,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:19,592 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2022-11-03 03:56:19,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:56:19,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [350618012] [2022-11-03 03:56:19,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:19,593 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:56:19,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:56:19,595 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:56:19,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-03 03:56:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:19,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 03:56:19,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:19,945 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 [2022-11-03 03:56:19,961 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-11-03 03:56:20,000 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-03 03:56:20,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:56:20,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:56:20,016 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:56:20,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [350618012] [2022-11-03 03:56:20,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [350618012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:56:20,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:56:20,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:56:20,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796283955] [2022-11-03 03:56:20,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:56:20,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:56:20,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:56:20,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:56:20,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:56:20,019 INFO L87 Difference]: Start difference. First operand 1055 states and 1254 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2022-11-03 03:56:23,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:23,500 INFO L93 Difference]: Finished difference Result 1054 states and 1253 transitions. [2022-11-03 03:56:23,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:56:23,501 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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 65 [2022-11-03 03:56:23,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:23,506 INFO L225 Difference]: With dead ends: 1054 [2022-11-03 03:56:23,507 INFO L226 Difference]: Without dead ends: 1054 [2022-11-03 03:56:23,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:56:23,508 INFO L413 NwaCegarLoop]: 880 mSDtfsCounter, 4 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2237 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:23,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2237 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1288 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-03 03:56:23,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2022-11-03 03:56:23,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 1054. [2022-11-03 03:56:23,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 692 states have (on average 1.8020231213872833) internal successors, (1247), 1049 states have internal predecessors, (1247), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 03:56:23,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1253 transitions. [2022-11-03 03:56:23,528 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1253 transitions. Word has length 65 [2022-11-03 03:56:23,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:23,528 INFO L495 AbstractCegarLoop]: Abstraction has 1054 states and 1253 transitions. [2022-11-03 03:56:23,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2022-11-03 03:56:23,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1253 transitions. [2022-11-03 03:56:23,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 03:56:23,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:23,530 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:56:23,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-03 03:56:23,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:56:23,749 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-03 03:56:23,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:23,750 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2022-11-03 03:56:23,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:56:23,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104766624] [2022-11-03 03:56:23,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:23,751 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:56:23,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:56:23,752 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:56:23,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 03:56:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:24,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:56:24,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:24,155 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 [2022-11-03 03:56:24,178 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-11-03 03:56:24,190 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-11-03 03:56:24,265 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-03 03:56:24,273 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-03 03:56:24,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:56:24,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:56:24,296 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:56:24,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104766624] [2022-11-03 03:56:24,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1104766624] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:56:24,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:56:24,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:56:24,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76228527] [2022-11-03 03:56:24,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:56:24,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:56:24,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:56:24,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:56:24,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:56:24,299 INFO L87 Difference]: Start difference. First operand 1054 states and 1253 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2022-11-03 03:56:29,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:29,019 INFO L93 Difference]: Finished difference Result 1053 states and 1252 transitions. [2022-11-03 03:56:29,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:56:29,020 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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 65 [2022-11-03 03:56:29,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:29,025 INFO L225 Difference]: With dead ends: 1053 [2022-11-03 03:56:29,025 INFO L226 Difference]: Without dead ends: 1053 [2022-11-03 03:56:29,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:56:29,026 INFO L413 NwaCegarLoop]: 880 mSDtfsCounter, 2 mSDsluCounter, 1398 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2278 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:29,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2278 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1245 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-03 03:56:29,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2022-11-03 03:56:29,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 1053. [2022-11-03 03:56:29,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 691 states have (on average 1.8031837916063675) internal successors, (1246), 1048 states have internal predecessors, (1246), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 03:56:29,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1252 transitions. [2022-11-03 03:56:29,047 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1252 transitions. Word has length 65 [2022-11-03 03:56:29,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:29,047 INFO L495 AbstractCegarLoop]: Abstraction has 1053 states and 1252 transitions. [2022-11-03 03:56:29,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2022-11-03 03:56:29,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1252 transitions. [2022-11-03 03:56:29,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-03 03:56:29,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:29,049 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:56:29,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-03 03:56:29,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:56:29,268 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-03 03:56:29,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:29,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1702947151, now seen corresponding path program 1 times [2022-11-03 03:56:29,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:56:29,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [952040995] [2022-11-03 03:56:29,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:29,270 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:56:29,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:56:29,271 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:56:29,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-03 03:56:29,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:29,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:56:29,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:29,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:56:29,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:56:29,686 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:56:29,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [952040995] [2022-11-03 03:56:29,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [952040995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:56:29,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:56:29,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:56:29,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830375391] [2022-11-03 03:56:29,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:56:29,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:56:29,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:56:29,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:56:29,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:56:29,689 INFO L87 Difference]: Start difference. First operand 1053 states and 1252 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 03:56:29,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:29,744 INFO L93 Difference]: Finished difference Result 1056 states and 1256 transitions. [2022-11-03 03:56:29,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:56:29,745 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2022-11-03 03:56:29,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:29,757 INFO L225 Difference]: With dead ends: 1056 [2022-11-03 03:56:29,757 INFO L226 Difference]: Without dead ends: 1056 [2022-11-03 03:56:29,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:56:29,764 INFO L413 NwaCegarLoop]: 880 mSDtfsCounter, 2 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:29,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2635 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:56:29,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2022-11-03 03:56:29,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 1056. [2022-11-03 03:56:29,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 693 states have (on average 1.8023088023088023) internal successors, (1249), 1051 states have internal predecessors, (1249), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-03 03:56:29,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1256 transitions. [2022-11-03 03:56:29,801 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1256 transitions. Word has length 73 [2022-11-03 03:56:29,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:29,802 INFO L495 AbstractCegarLoop]: Abstraction has 1056 states and 1256 transitions. [2022-11-03 03:56:29,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 03:56:29,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1256 transitions. [2022-11-03 03:56:29,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-03 03:56:29,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:29,804 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:56:29,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-03 03:56:30,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:56:30,024 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-03 03:56:30,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:30,025 INFO L85 PathProgramCache]: Analyzing trace with hash -2021354046, now seen corresponding path program 1 times [2022-11-03 03:56:30,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:56:30,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655701672] [2022-11-03 03:56:30,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:30,026 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:56:30,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:56:30,027 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:56:30,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-03 03:56:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:30,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:56:30,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:30,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:56:30,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:56:30,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:56:30,654 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:56:30,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655701672] [2022-11-03 03:56:30,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655701672] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:56:30,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1582321862] [2022-11-03 03:56:30,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:30,655 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:56:30,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:56:30,663 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:56:30,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-11-03 03:56:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:31,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:56:31,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:31,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:56:31,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:56:31,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:56:31,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1582321862] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:56:31,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482399325] [2022-11-03 03:56:31,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:31,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:56:31,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:56:31,495 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:56:31,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-03 03:56:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:31,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:56:31,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:31,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:56:31,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:56:31,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:56:31,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482399325] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:56:31,938 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 03:56:31,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2022-11-03 03:56:31,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50482532] [2022-11-03 03:56:31,939 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 03:56:31,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 03:56:31,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:56:31,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 03:56:31,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:56:31,941 INFO L87 Difference]: Start difference. First operand 1056 states and 1256 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 03:56:32,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:32,178 INFO L93 Difference]: Finished difference Result 1068 states and 1273 transitions. [2022-11-03 03:56:32,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 03:56:32,179 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 74 [2022-11-03 03:56:32,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:32,185 INFO L225 Difference]: With dead ends: 1068 [2022-11-03 03:56:32,185 INFO L226 Difference]: Without dead ends: 1068 [2022-11-03 03:56:32,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:56:32,186 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 23 mSDsluCounter, 1757 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2638 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:32,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2638 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:56:32,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2022-11-03 03:56:32,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1066. [2022-11-03 03:56:32,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 702 states have (on average 1.8005698005698005) internal successors, (1264), 1060 states have internal predecessors, (1264), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-03 03:56:32,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1271 transitions. [2022-11-03 03:56:32,207 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1271 transitions. Word has length 74 [2022-11-03 03:56:32,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:32,207 INFO L495 AbstractCegarLoop]: Abstraction has 1066 states and 1271 transitions. [2022-11-03 03:56:32,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 03:56:32,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1271 transitions. [2022-11-03 03:56:32,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-03 03:56:32,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:32,209 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:56:32,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2022-11-03 03:56:32,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-03 03:56:32,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-03 03:56:32,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:56:32,816 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-03 03:56:32,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:32,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1623069169, now seen corresponding path program 2 times [2022-11-03 03:56:32,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:56:32,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1000318070] [2022-11-03 03:56:32,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 03:56:32,817 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:56:32,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:56:32,818 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:56:32,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-03 03:56:33,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 03:56:33,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:56:33,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 03:56:33,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:33,694 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:56:33,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:56:33,990 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:56:33,990 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:56:33,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1000318070] [2022-11-03 03:56:33,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1000318070] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:56:33,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1613325832] [2022-11-03 03:56:33,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 03:56:33,991 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:56:33,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:56:33,996 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:56:34,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-11-03 03:56:36,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 03:56:36,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:56:36,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 03:56:36,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:36,259 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:56:36,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:56:36,392 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:56:36,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1613325832] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:56:36,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860129071] [2022-11-03 03:56:36,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 03:56:36,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:56:36,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:56:36,396 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:56:36,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-03 03:56:59,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 03:56:59,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:56:59,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 03:56:59,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:59,623 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:56:59,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:56:59,992 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:56:59,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860129071] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:56:59,993 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 03:56:59,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2022-11-03 03:56:59,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363234185] [2022-11-03 03:56:59,993 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 03:56:59,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-03 03:56:59,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:56:59,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-03 03:56:59,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2022-11-03 03:56:59,996 INFO L87 Difference]: Start difference. First operand 1066 states and 1271 transitions. Second operand has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 03:57:01,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:57:01,288 INFO L93 Difference]: Finished difference Result 1087 states and 1298 transitions. [2022-11-03 03:57:01,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 03:57:01,291 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 77 [2022-11-03 03:57:01,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:57:01,296 INFO L225 Difference]: With dead ends: 1087 [2022-11-03 03:57:01,296 INFO L226 Difference]: Without dead ends: 1081 [2022-11-03 03:57:01,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=416, Invalid=774, Unknown=0, NotChecked=0, Total=1190 [2022-11-03 03:57:01,298 INFO L413 NwaCegarLoop]: 883 mSDtfsCounter, 80 mSDsluCounter, 6150 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 7033 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:57:01,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 7033 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:57:01,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2022-11-03 03:57:01,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 1075. [2022-11-03 03:57:01,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 711 states have (on average 1.7932489451476794) internal successors, (1275), 1069 states have internal predecessors, (1275), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-03 03:57:01,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1282 transitions. [2022-11-03 03:57:01,323 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1282 transitions. Word has length 77 [2022-11-03 03:57:01,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:57:01,324 INFO L495 AbstractCegarLoop]: Abstraction has 1075 states and 1282 transitions. [2022-11-03 03:57:01,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 03:57:01,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1282 transitions. [2022-11-03 03:57:01,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-03 03:57:01,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:57:01,325 INFO L195 NwaCegarLoop]: trace histogram [10, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:57:01,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-03 03:57:01,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-03 03:57:01,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2022-11-03 03:57:01,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 03:57:01,953 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 527 more)] === [2022-11-03 03:57:01,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:57:01,954 INFO L85 PathProgramCache]: Analyzing trace with hash -568082129, now seen corresponding path program 3 times [2022-11-03 03:57:01,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:57:01,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227169525] [2022-11-03 03:57:01,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 03:57:01,955 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:57:01,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:57:01,956 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:57:01,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-03 03:57:02,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-03 03:57:02,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:57:02,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 03:57:02,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:57:03,133 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:57:03,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:57:04,339 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:57:04,339 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:57:04,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [227169525] [2022-11-03 03:57:04,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [227169525] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:57:04,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1825684417] [2022-11-03 03:57:04,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 03:57:04,340 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:57:04,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:57:04,341 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:57:04,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-11-03 03:57:10,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-03 03:57:10,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:57:10,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 03:57:10,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:57:10,667 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:57:10,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:57:10,961 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:57:10,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1825684417] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:57:10,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249365215] [2022-11-03 03:57:10,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 03:57:10,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:57:10,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:57:10,964 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:57:10,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2cea182-f714-4477-b440-59991bf5c969/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process