./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF --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 bfb70cce6cd508003f6161c30aa2ac99ac8ddeb6209ddd86b65ca0c623c2fb1c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:51:15,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:51:15,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:51:15,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:51:15,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:51:15,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:51:15,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:51:15,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:51:15,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:51:15,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:51:15,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:51:15,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:51:15,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:51:15,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:51:15,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:51:15,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:51:15,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:51:15,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:51:15,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:51:15,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:51:15,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:51:15,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:51:15,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:51:15,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:51:16,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:51:16,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:51:16,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:51:16,005 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:51:16,005 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:51:16,007 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:51:16,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:51:16,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:51:16,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:51:16,011 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:51:16,013 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:51:16,013 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:51:16,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:51:16,014 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:51:16,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:51:16,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:51:16,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:51:16,017 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-12 23:51:16,067 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:51:16,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:51:16,069 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:51:16,069 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:51:16,070 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:51:16,076 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:51:16,076 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:51:16,076 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:51:16,077 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:51:16,077 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:51:16,078 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:51:16,078 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:51:16,079 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:51:16,079 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:51:16,079 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:51:16,079 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:51:16,080 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 23:51:16,081 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 23:51:16,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:51:16,081 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:51:16,081 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 23:51:16,082 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:51:16,082 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:51:16,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:51:16,082 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 23:51:16,083 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 23:51:16,084 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 23:51:16,085 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:51:16,085 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:51:16,085 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:51:16,085 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:51:16,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:51:16,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:51:16,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:51:16,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:51:16,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:51:16,087 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:51:16,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:51:16,087 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:51:16,088 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:51:16,088 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfb70cce6cd508003f6161c30aa2ac99ac8ddeb6209ddd86b65ca0c623c2fb1c [2021-11-12 23:51:16,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:51:16,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:51:16,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:51:16,351 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:51:16,352 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:51:16,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i [2021-11-12 23:51:16,459 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/data/fd9db8712/e80c4ed8f7c943bd904bbd5a3aa46f2b/FLAG0a5cc3ec1 [2021-11-12 23:51:17,138 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:51:17,139 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i [2021-11-12 23:51:17,166 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/data/fd9db8712/e80c4ed8f7c943bd904bbd5a3aa46f2b/FLAG0a5cc3ec1 [2021-11-12 23:51:17,400 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/data/fd9db8712/e80c4ed8f7c943bd904bbd5a3aa46f2b [2021-11-12 23:51:17,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:51:17,404 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:51:17,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:51:17,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:51:17,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:51:17,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:51:17" (1/1) ... [2021-11-12 23:51:17,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39c03f9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:17, skipping insertion in model container [2021-11-12 23:51:17,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:51:17" (1/1) ... [2021-11-12 23:51:17,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:51:17,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:51:17,930 WARN L228 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_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i[33021,33034] [2021-11-12 23:51:18,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:51:18,051 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 23:51:18,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@10cfcc29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:18, skipping insertion in model container [2021-11-12 23:51:18,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:51:18,053 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:51:18,055 INFO L158 Benchmark]: Toolchain (without parser) took 650.01ms. Allocated memory is still 107.0MB. Free memory was 72.8MB in the beginning and 73.1MB in the end (delta: -261.2kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 23:51:18,055 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 107.0MB. Free memory is still 60.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:51:18,056 INFO L158 Benchmark]: CACSL2BoogieTranslator took 647.43ms. Allocated memory is still 107.0MB. Free memory was 72.6MB in the beginning and 73.1MB in the end (delta: -515.4kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 23:51:18,058 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 107.0MB. Free memory is still 60.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 647.43ms. Allocated memory is still 107.0MB. Free memory was 72.6MB in the beginning and 73.1MB in the end (delta: -515.4kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 751]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF --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 bfb70cce6cd508003f6161c30aa2ac99ac8ddeb6209ddd86b65ca0c623c2fb1c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:51:20,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:51:20,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:51:20,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:51:20,506 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:51:20,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:51:20,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:51:20,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:51:20,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:51:20,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:51:20,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:51:20,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:51:20,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:51:20,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:51:20,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:51:20,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:51:20,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:51:20,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:51:20,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:51:20,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:51:20,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:51:20,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:51:20,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:51:20,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:51:20,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:51:20,585 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:51:20,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:51:20,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:51:20,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:51:20,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:51:20,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:51:20,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:51:20,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:51:20,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:51:20,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:51:20,598 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:51:20,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:51:20,615 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:51:20,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:51:20,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:51:20,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:51:20,619 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-12 23:51:20,672 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:51:20,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:51:20,674 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:51:20,675 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:51:20,675 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:51:20,675 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:51:20,675 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:51:20,675 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:51:20,676 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:51:20,676 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:51:20,679 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 23:51:20,679 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 23:51:20,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:51:20,679 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:51:20,680 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 23:51:20,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:51:20,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:51:20,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:51:20,681 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 23:51:20,681 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 23:51:20,681 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 23:51:20,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:51:20,682 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:51:20,682 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:51:20,682 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:51:20,682 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:51:20,682 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:51:20,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:51:20,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:51:20,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:51:20,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:51:20,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:51:20,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:51:20,685 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:51:20,685 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:51:20,685 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:51:20,686 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:51:20,686 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_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfb70cce6cd508003f6161c30aa2ac99ac8ddeb6209ddd86b65ca0c623c2fb1c [2021-11-12 23:51:21,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:51:21,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:51:21,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:51:21,199 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:51:21,199 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:51:21,201 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i [2021-11-12 23:51:21,277 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/data/3f7b13755/deeab1f88e1e43c3aac6a361f29c9eb9/FLAGada3985c9 [2021-11-12 23:51:22,154 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:51:22,155 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i [2021-11-12 23:51:22,189 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/data/3f7b13755/deeab1f88e1e43c3aac6a361f29c9eb9/FLAGada3985c9 [2021-11-12 23:51:22,244 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/data/3f7b13755/deeab1f88e1e43c3aac6a361f29c9eb9 [2021-11-12 23:51:22,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:51:22,250 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:51:22,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:51:22,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:51:22,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:51:22,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:51:22" (1/1) ... [2021-11-12 23:51:22,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ff571a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:22, skipping insertion in model container [2021-11-12 23:51:22,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:51:22" (1/1) ... [2021-11-12 23:51:22,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:51:22,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:51:22,980 WARN L228 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_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i[33021,33034] [2021-11-12 23:51:23,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:51:23,136 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:51:23,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:51:23,171 WARN L228 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_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i[33021,33034] [2021-11-12 23:51:23,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:51:23,314 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:51:23,369 WARN L228 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_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i[33021,33034] [2021-11-12 23:51:23,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:51:23,562 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:51:23,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:23 WrapperNode [2021-11-12 23:51:23,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:51:23,564 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:51:23,564 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:51:23,564 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:51:23,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:23" (1/1) ... [2021-11-12 23:51:23,603 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:23" (1/1) ... [2021-11-12 23:51:23,664 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:51:23,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:51:23,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:51:23,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:51:23,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:23" (1/1) ... [2021-11-12 23:51:23,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:23" (1/1) ... [2021-11-12 23:51:23,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:23" (1/1) ... [2021-11-12 23:51:23,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:23" (1/1) ... [2021-11-12 23:51:23,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:23" (1/1) ... [2021-11-12 23:51:23,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:23" (1/1) ... [2021-11-12 23:51:23,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:23" (1/1) ... [2021-11-12 23:51:23,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:51:23,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:51:23,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:51:23,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:51:23,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:23" (1/1) ... [2021-11-12 23:51:23,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:51:23,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:51:23,864 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:51:23,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:51:23,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:51:23,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:51:23,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 23:51:23,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 23:51:23,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 23:51:23,911 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 23:51:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:51:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:51:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:51:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:51:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:51:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:51:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:51:23,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:51:23,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:51:24,200 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-12 23:51:27,770 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:51:27,772 INFO L299 CfgBuilder]: Removed 40 assume(true) statements. [2021-11-12 23:51:27,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:51:27 BoogieIcfgContainer [2021-11-12 23:51:27,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:51:27,779 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:51:27,779 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:51:27,782 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:51:27,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:51:22" (1/3) ... [2021-11-12 23:51:27,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73fca9b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:51:27, skipping insertion in model container [2021-11-12 23:51:27,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:23" (2/3) ... [2021-11-12 23:51:27,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73fca9b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:51:27, skipping insertion in model container [2021-11-12 23:51:27,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:51:27" (3/3) ... [2021-11-12 23:51:27,786 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test1-2.i [2021-11-12 23:51:27,792 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:51:27,792 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 435 error locations. [2021-11-12 23:51:27,847 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:51:27,860 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:51:27,860 INFO L340 AbstractCegarLoop]: Starting to check reachability of 435 error locations. [2021-11-12 23:51:27,900 INFO L276 IsEmpty]: Start isEmpty. Operand has 867 states, 419 states have (on average 2.252983293556086) internal successors, (944), 861 states have internal predecessors, (944), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-12 23:51:27,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-12 23:51:27,906 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:51:27,907 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-12 23:51:27,907 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-12 23:51:27,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:51:27,917 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2021-11-12 23:51:27,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:51:27,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [996180680] [2021-11-12 23:51:27,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:51:27,930 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:51:27,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:51:27,937 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:51:27,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:51:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:51:28,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:51:28,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:51:28,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:28,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:51:28,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:28,209 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:51:28,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [996180680] [2021-11-12 23:51:28,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [996180680] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:51:28,210 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:51:28,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:51:28,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859946268] [2021-11-12 23:51:28,212 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:51:28,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:51:28,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:51:28,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:51:28,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:51:28,286 INFO L87 Difference]: Start difference. First operand has 867 states, 419 states have (on average 2.252983293556086) internal successors, (944), 861 states have internal predecessors, (944), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:28,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:51:28,367 INFO L93 Difference]: Finished difference Result 858 states and 916 transitions. [2021-11-12 23:51:28,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:51:28,370 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-12 23:51:28,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:51:28,392 INFO L225 Difference]: With dead ends: 858 [2021-11-12 23:51:28,392 INFO L226 Difference]: Without dead ends: 856 [2021-11-12 23:51:28,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:51:28,398 INFO L933 BasicCegarLoop]: 916 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.77ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:51:28,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 9.77ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:51:28,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2021-11-12 23:51:28,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 856. [2021-11-12 23:51:28,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 414 states have (on average 2.1449275362318843) internal successors, (888), 850 states have internal predecessors, (888), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-12 23:51:28,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 914 transitions. [2021-11-12 23:51:28,514 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 914 transitions. Word has length 5 [2021-11-12 23:51:28,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:51:28,515 INFO L470 AbstractCegarLoop]: Abstraction has 856 states and 914 transitions. [2021-11-12 23:51:28,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:28,515 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 914 transitions. [2021-11-12 23:51:28,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-12 23:51:28,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:51:28,516 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-12 23:51:28,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:51:28,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:51:28,734 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-12 23:51:28,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:51:28,735 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2021-11-12 23:51:28,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:51:28,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [102129892] [2021-11-12 23:51:28,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:51:28,736 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:51:28,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:51:28,738 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:51:28,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:51:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:51:28,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:51:28,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:51:28,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:51:28,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:28,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:51:28,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:28,916 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:51:28,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [102129892] [2021-11-12 23:51:28,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [102129892] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:51:28,917 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:51:28,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:51:28,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100399842] [2021-11-12 23:51:28,918 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:51:28,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:51:28,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:51:28,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:51:28,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:51:28,920 INFO L87 Difference]: Start difference. First operand 856 states and 914 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:30,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:51:30,664 INFO L93 Difference]: Finished difference Result 814 states and 873 transitions. [2021-11-12 23:51:30,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:51:30,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-12 23:51:30,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:51:30,671 INFO L225 Difference]: With dead ends: 814 [2021-11-12 23:51:30,671 INFO L226 Difference]: Without dead ends: 814 [2021-11-12 23:51:30,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:51:30,673 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 596 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1417.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.26ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1691.25ms IncrementalHoareTripleChecker+Time [2021-11-12 23:51:30,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 662 Invalid, 515 Unknown, 0 Unchecked, 13.26ms Time], IncrementalHoareTripleChecker [54 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 1691.25ms Time] [2021-11-12 23:51:30,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2021-11-12 23:51:30,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 807. [2021-11-12 23:51:30,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 414 states have (on average 2.026570048309179) internal successors, (839), 801 states have internal predecessors, (839), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-12 23:51:30,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 865 transitions. [2021-11-12 23:51:30,714 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 865 transitions. Word has length 5 [2021-11-12 23:51:30,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:51:30,715 INFO L470 AbstractCegarLoop]: Abstraction has 807 states and 865 transitions. [2021-11-12 23:51:30,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:30,715 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 865 transitions. [2021-11-12 23:51:30,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-12 23:51:30,716 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:51:30,716 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-12 23:51:30,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:51:30,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:51:30,933 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-12 23:51:30,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:51:30,934 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2021-11-12 23:51:30,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:51:30,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87949509] [2021-11-12 23:51:30,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:51:30,935 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:51:30,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:51:30,939 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:51:30,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:51:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:51:31,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:51:31,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:51:31,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:51:31,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:31,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:51:31,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:31,222 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:51:31,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [87949509] [2021-11-12 23:51:31,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [87949509] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:51:31,226 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:51:31,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-12 23:51:31,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601669710] [2021-11-12 23:51:31,227 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:51:31,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:51:31,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:51:31,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:51:31,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:51:31,232 INFO L87 Difference]: Start difference. First operand 807 states and 865 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-11-12 23:51:35,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:51:35,915 INFO L93 Difference]: Finished difference Result 880 states and 942 transitions. [2021-11-12 23:51:35,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:51:35,916 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 5 [2021-11-12 23:51:35,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:51:35,921 INFO L225 Difference]: With dead ends: 880 [2021-11-12 23:51:35,922 INFO L226 Difference]: Without dead ends: 880 [2021-11-12 23:51:35,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:51:35,923 INFO L933 BasicCegarLoop]: 705 mSDtfsCounter, 323 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4075.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.06ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4611.34ms IncrementalHoareTripleChecker+Time [2021-11-12 23:51:35,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 1276 Invalid, 876 Unknown, 0 Unchecked, 17.06ms Time], IncrementalHoareTripleChecker [15 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 4611.34ms Time] [2021-11-12 23:51:35,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2021-11-12 23:51:35,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 829. [2021-11-12 23:51:35,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 446 states have (on average 2.006726457399103) internal successors, (895), 823 states have internal predecessors, (895), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-12 23:51:35,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 921 transitions. [2021-11-12 23:51:35,951 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 921 transitions. Word has length 5 [2021-11-12 23:51:35,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:51:35,951 INFO L470 AbstractCegarLoop]: Abstraction has 829 states and 921 transitions. [2021-11-12 23:51:35,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-11-12 23:51:35,952 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 921 transitions. [2021-11-12 23:51:35,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-12 23:51:35,952 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:51:35,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-12 23:51:35,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:51:36,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:51:36,163 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr322REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-12 23:51:36,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:51:36,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1156735106, now seen corresponding path program 1 times [2021-11-12 23:51:36,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:51:36,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [223178243] [2021-11-12 23:51:36,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:51:36,165 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:51:36,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:51:36,168 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:51:36,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:51:36,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:51:36,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:51:36,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:51:36,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:36,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:51:36,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:36,311 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:51:36,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [223178243] [2021-11-12 23:51:36,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [223178243] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:51:36,322 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:51:36,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:51:36,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406662737] [2021-11-12 23:51:36,323 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:51:36,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:51:36,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:51:36,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:51:36,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:51:36,325 INFO L87 Difference]: Start difference. First operand 829 states and 921 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-11-12 23:51:36,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:51:36,446 INFO L93 Difference]: Finished difference Result 1411 states and 1564 transitions. [2021-11-12 23:51:36,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:51:36,447 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 6 [2021-11-12 23:51:36,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:51:36,457 INFO L225 Difference]: With dead ends: 1411 [2021-11-12 23:51:36,458 INFO L226 Difference]: Without dead ends: 1411 [2021-11-12 23:51:36,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:51:36,462 INFO L933 BasicCegarLoop]: 1076 mSDtfsCounter, 1485 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 72.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 1922 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.29ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 87.27ms IncrementalHoareTripleChecker+Time [2021-11-12 23:51:36,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1491 Valid, 1922 Invalid, 18 Unknown, 0 Unchecked, 7.29ms Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 87.27ms Time] [2021-11-12 23:51:36,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2021-11-12 23:51:36,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1151. [2021-11-12 23:51:36,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 768 states have (on average 1.9947916666666667) internal successors, (1532), 1142 states have internal predecessors, (1532), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:51:36,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1564 transitions. [2021-11-12 23:51:36,516 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1564 transitions. Word has length 6 [2021-11-12 23:51:36,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:51:36,517 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 1564 transitions. [2021-11-12 23:51:36,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-11-12 23:51:36,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1564 transitions. [2021-11-12 23:51:36,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-12 23:51:36,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:51:36,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:51:36,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:51:36,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:51:36,729 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-12 23:51:36,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:51:36,730 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2021-11-12 23:51:36,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:51:36,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426715636] [2021-11-12 23:51:36,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:51:36,730 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:51:36,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:51:36,731 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:51:36,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:51:36,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:51:36,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:51:36,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:51:36,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:36,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:51:36,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:36,902 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:51:36,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426715636] [2021-11-12 23:51:36,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426715636] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:51:36,903 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:51:36,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:51:36,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933824173] [2021-11-12 23:51:36,903 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:51:36,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:51:36,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:51:36,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:51:36,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:51:36,905 INFO L87 Difference]: Start difference. First operand 1151 states and 1564 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:36,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:51:36,985 INFO L93 Difference]: Finished difference Result 1091 states and 1478 transitions. [2021-11-12 23:51:36,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:51:36,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-12 23:51:36,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:51:36,993 INFO L225 Difference]: With dead ends: 1091 [2021-11-12 23:51:36,993 INFO L226 Difference]: Without dead ends: 1091 [2021-11-12 23:51:36,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:51:36,995 INFO L933 BasicCegarLoop]: 807 mSDtfsCounter, 1546 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1559 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.26ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.63ms IncrementalHoareTripleChecker+Time [2021-11-12 23:51:36,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1559 Valid, 837 Invalid, 26 Unknown, 0 Unchecked, 5.26ms Time], IncrementalHoareTripleChecker [13 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 41.63ms Time] [2021-11-12 23:51:36,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2021-11-12 23:51:37,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1091. [2021-11-12 23:51:37,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 732 states have (on average 1.9754098360655739) internal successors, (1446), 1082 states have internal predecessors, (1446), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:51:37,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1478 transitions. [2021-11-12 23:51:37,028 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1478 transitions. Word has length 11 [2021-11-12 23:51:37,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:51:37,029 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 1478 transitions. [2021-11-12 23:51:37,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:37,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1478 transitions. [2021-11-12 23:51:37,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-12 23:51:37,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:51:37,030 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:51:37,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:51:37,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:51:37,241 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-12 23:51:37,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:51:37,242 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2021-11-12 23:51:37,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:51:37,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24663296] [2021-11-12 23:51:37,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:51:37,243 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:51:37,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:51:37,244 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:51:37,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:51:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:51:37,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:51:37,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:51:37,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:37,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:51:37,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:37,448 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:51:37,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24663296] [2021-11-12 23:51:37,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24663296] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:51:37,449 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:51:37,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-12 23:51:37,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642884630] [2021-11-12 23:51:37,449 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:51:37,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:51:37,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:51:37,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:51:37,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:51:37,451 INFO L87 Difference]: Start difference. First operand 1091 states and 1478 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:37,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:51:37,572 INFO L93 Difference]: Finished difference Result 1063 states and 1422 transitions. [2021-11-12 23:51:37,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:51:37,573 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-12 23:51:37,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:51:37,580 INFO L225 Difference]: With dead ends: 1063 [2021-11-12 23:51:37,580 INFO L226 Difference]: Without dead ends: 1063 [2021-11-12 23:51:37,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:51:37,582 INFO L933 BasicCegarLoop]: 762 mSDtfsCounter, 1478 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.14ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86.47ms IncrementalHoareTripleChecker+Time [2021-11-12 23:51:37,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1491 Valid, 1547 Invalid, 89 Unknown, 0 Unchecked, 7.14ms Time], IncrementalHoareTripleChecker [55 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 86.47ms Time] [2021-11-12 23:51:37,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2021-11-12 23:51:37,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1061. [2021-11-12 23:51:37,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 716 states have (on average 1.9385474860335195) internal successors, (1388), 1052 states have internal predecessors, (1388), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:51:37,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1420 transitions. [2021-11-12 23:51:37,613 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1420 transitions. Word has length 13 [2021-11-12 23:51:37,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:51:37,614 INFO L470 AbstractCegarLoop]: Abstraction has 1061 states and 1420 transitions. [2021-11-12 23:51:37,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:37,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1420 transitions. [2021-11-12 23:51:37,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-12 23:51:37,615 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:51:37,615 INFO L514 BasicCegarLoop]: 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] [2021-11-12 23:51:37,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:51:37,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:51:37,830 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-12 23:51:37,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:51:37,830 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2021-11-12 23:51:37,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:51:37,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532589458] [2021-11-12 23:51:37,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:51:37,831 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:51:37,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:51:37,832 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:51:37,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:51:37,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:51:37,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:51:37,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:51:37,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:51:38,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:38,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:51:38,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:38,160 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:51:38,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [532589458] [2021-11-12 23:51:38,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [532589458] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:51:38,161 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:51:38,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:51:38,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948653603] [2021-11-12 23:51:38,161 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:51:38,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:51:38,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:51:38,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:51:38,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:51:38,162 INFO L87 Difference]: Start difference. First operand 1061 states and 1420 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:40,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:51:40,205 INFO L93 Difference]: Finished difference Result 1294 states and 1680 transitions. [2021-11-12 23:51:40,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:51:40,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-12 23:51:40,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:51:40,216 INFO L225 Difference]: With dead ends: 1294 [2021-11-12 23:51:40,216 INFO L226 Difference]: Without dead ends: 1294 [2021-11-12 23:51:40,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:51:40,217 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 1151 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1690.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1161 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.35ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1985.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:51:40,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1161 Valid, 718 Invalid, 744 Unknown, 0 Unchecked, 11.35ms Time], IncrementalHoareTripleChecker [41 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 1985.00ms Time] [2021-11-12 23:51:40,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2021-11-12 23:51:40,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1057. [2021-11-12 23:51:40,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 716 states have (on average 1.9273743016759777) internal successors, (1380), 1048 states have internal predecessors, (1380), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:51:40,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1412 transitions. [2021-11-12 23:51:40,256 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1412 transitions. Word has length 27 [2021-11-12 23:51:40,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:51:40,257 INFO L470 AbstractCegarLoop]: Abstraction has 1057 states and 1412 transitions. [2021-11-12 23:51:40,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:40,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1412 transitions. [2021-11-12 23:51:40,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-12 23:51:40,258 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:51:40,259 INFO L514 BasicCegarLoop]: 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] [2021-11-12 23:51:40,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:51:40,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:51:40,470 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-12 23:51:40,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:51:40,471 INFO L85 PathProgramCache]: Analyzing trace with hash -22216186, now seen corresponding path program 1 times [2021-11-12 23:51:40,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:51:40,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2083103799] [2021-11-12 23:51:40,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:51:40,472 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:51:40,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:51:40,473 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:51:40,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:51:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:51:40,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:51:40,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:51:40,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:51:40,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:40,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:51:41,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:41,240 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:51:41,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2083103799] [2021-11-12 23:51:41,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2083103799] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:51:41,240 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:51:41,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 23:51:41,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264167368] [2021-11-12 23:51:41,240 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:51:41,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:51:41,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:51:41,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:51:41,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:51:41,241 INFO L87 Difference]: Start difference. First operand 1057 states and 1412 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 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) [2021-11-12 23:51:47,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:51:47,885 INFO L93 Difference]: Finished difference Result 1357 states and 1715 transitions. [2021-11-12 23:51:47,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 23:51:47,886 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 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 27 [2021-11-12 23:51:47,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:51:47,897 INFO L225 Difference]: With dead ends: 1357 [2021-11-12 23:51:47,897 INFO L226 Difference]: Without dead ends: 1357 [2021-11-12 23:51:47,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:51:47,898 INFO L933 BasicCegarLoop]: 573 mSDtfsCounter, 699 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 1622 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5750.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.70ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6457.78ms IncrementalHoareTripleChecker+Time [2021-11-12 23:51:47,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [709 Valid, 1778 Invalid, 1654 Unknown, 0 Unchecked, 20.70ms Time], IncrementalHoareTripleChecker [32 Valid, 1622 Invalid, 0 Unknown, 0 Unchecked, 6457.78ms Time] [2021-11-12 23:51:47,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2021-11-12 23:51:47,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 1053. [2021-11-12 23:51:47,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 716 states have (on average 1.9162011173184357) internal successors, (1372), 1044 states have internal predecessors, (1372), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:51:47,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1404 transitions. [2021-11-12 23:51:47,943 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1404 transitions. Word has length 27 [2021-11-12 23:51:47,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:51:47,944 INFO L470 AbstractCegarLoop]: Abstraction has 1053 states and 1404 transitions. [2021-11-12 23:51:47,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 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) [2021-11-12 23:51:47,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1404 transitions. [2021-11-12 23:51:47,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-12 23:51:47,946 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:51:47,947 INFO L514 BasicCegarLoop]: 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] [2021-11-12 23:51:47,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:51:48,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:51:48,161 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-12 23:51:48,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:51:48,162 INFO L85 PathProgramCache]: Analyzing trace with hash 810363537, now seen corresponding path program 1 times [2021-11-12 23:51:48,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:51:48,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1487376225] [2021-11-12 23:51:48,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:51:48,164 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:51:48,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:51:48,166 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:51:48,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:51:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:51:48,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:51:48,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:51:48,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:48,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:51:48,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:48,692 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:51:48,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1487376225] [2021-11-12 23:51:48,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1487376225] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:51:48,693 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:51:48,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 23:51:48,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090281007] [2021-11-12 23:51:48,693 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:51:48,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:51:48,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:51:48,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:51:48,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:51:48,695 INFO L87 Difference]: Start difference. First operand 1053 states and 1404 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:48,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:51:48,762 INFO L93 Difference]: Finished difference Result 1041 states and 1384 transitions. [2021-11-12 23:51:48,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:51:48,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 42 [2021-11-12 23:51:48,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:51:48,770 INFO L225 Difference]: With dead ends: 1041 [2021-11-12 23:51:48,770 INFO L226 Difference]: Without dead ends: 1041 [2021-11-12 23:51:48,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:51:48,774 INFO L933 BasicCegarLoop]: 756 mSDtfsCounter, 720 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.45ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.29ms IncrementalHoareTripleChecker+Time [2021-11-12 23:51:48,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [733 Valid, 1525 Invalid, 43 Unknown, 0 Unchecked, 3.45ms Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 45.29ms Time] [2021-11-12 23:51:48,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2021-11-12 23:51:48,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 1041. [2021-11-12 23:51:48,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 704 states have (on average 1.9204545454545454) internal successors, (1352), 1032 states have internal predecessors, (1352), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:51:48,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1384 transitions. [2021-11-12 23:51:48,837 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1384 transitions. Word has length 42 [2021-11-12 23:51:48,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:51:48,839 INFO L470 AbstractCegarLoop]: Abstraction has 1041 states and 1384 transitions. [2021-11-12 23:51:48,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:48,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1384 transitions. [2021-11-12 23:51:48,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-12 23:51:48,845 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:51:48,846 INFO L514 BasicCegarLoop]: 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] [2021-11-12 23:51:48,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:51:49,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:51:49,061 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-12 23:51:49,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:51:49,062 INFO L85 PathProgramCache]: Analyzing trace with hash 2087041861, now seen corresponding path program 1 times [2021-11-12 23:51:49,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:51:49,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842859159] [2021-11-12 23:51:49,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:51:49,063 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:51:49,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:51:49,065 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:51:49,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 23:51:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:51:49,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:51:49,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:51:49,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:49,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:51:50,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:50,066 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:51:50,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842859159] [2021-11-12 23:51:50,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [842859159] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:51:50,067 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:51:50,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:51:50,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654000548] [2021-11-12 23:51:50,068 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:51:50,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:51:50,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:51:50,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:51:50,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:51:50,069 INFO L87 Difference]: Start difference. First operand 1041 states and 1384 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:50,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:51:50,353 INFO L93 Difference]: Finished difference Result 1186 states and 1483 transitions. [2021-11-12 23:51:50,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:51:50,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 50 [2021-11-12 23:51:50,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:51:50,360 INFO L225 Difference]: With dead ends: 1186 [2021-11-12 23:51:50,361 INFO L226 Difference]: Without dead ends: 1186 [2021-11-12 23:51:50,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:51:50,362 INFO L933 BasicCegarLoop]: 835 mSDtfsCounter, 269 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 227.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 1465 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.15ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 268.13ms IncrementalHoareTripleChecker+Time [2021-11-12 23:51:50,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 1465 Invalid, 98 Unknown, 0 Unchecked, 3.15ms Time], IncrementalHoareTripleChecker [4 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 268.13ms Time] [2021-11-12 23:51:50,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2021-11-12 23:51:50,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 991. [2021-11-12 23:51:50,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 654 states have (on average 1.9067278287461773) internal successors, (1247), 982 states have internal predecessors, (1247), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:51:50,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1279 transitions. [2021-11-12 23:51:50,390 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1279 transitions. Word has length 50 [2021-11-12 23:51:50,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:51:50,391 INFO L470 AbstractCegarLoop]: Abstraction has 991 states and 1279 transitions. [2021-11-12 23:51:50,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:50,391 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1279 transitions. [2021-11-12 23:51:50,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-12 23:51:50,392 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:51:50,393 INFO L514 BasicCegarLoop]: 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] [2021-11-12 23:51:50,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:51:50,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:51:50,631 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-12 23:51:50,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:51:50,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1009990608, now seen corresponding path program 1 times [2021-11-12 23:51:50,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:51:50,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1024397075] [2021-11-12 23:51:50,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:51:50,633 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:51:50,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:51:50,634 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:51:50,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:51:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:51:50,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:51:50,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:51:50,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:51:50,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:51:51,759 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-12 23:51:51,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2021-11-12 23:51:51,773 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 23:51:51,773 INFO L388 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 24 treesize of output 20 [2021-11-12 23:51:51,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:51,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:51:57,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:57,085 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:51:57,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1024397075] [2021-11-12 23:51:57,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1024397075] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:51:57,085 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:51:57,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 23:51:57,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101597625] [2021-11-12 23:51:57,086 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:51:57,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:51:57,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:51:57,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:51:57,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-12 23:51:57,088 INFO L87 Difference]: Start difference. First operand 991 states and 1279 transitions. Second operand has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:59,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:51:59,501 INFO L93 Difference]: Finished difference Result 1193 states and 1457 transitions. [2021-11-12 23:51:59,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:51:59,502 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 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 53 [2021-11-12 23:51:59,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:51:59,508 INFO L225 Difference]: With dead ends: 1193 [2021-11-12 23:51:59,508 INFO L226 Difference]: Without dead ends: 1193 [2021-11-12 23:51:59,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-12 23:51:59,509 INFO L933 BasicCegarLoop]: 635 mSDtfsCounter, 313 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2015.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.62ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 664 IncrementalHoareTripleChecker+Unchecked, 2341.63ms IncrementalHoareTripleChecker+Time [2021-11-12 23:51:59,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 1737 Invalid, 1396 Unknown, 0 Unchecked, 11.62ms Time], IncrementalHoareTripleChecker [18 Valid, 714 Invalid, 0 Unknown, 664 Unchecked, 2341.63ms Time] [2021-11-12 23:51:59,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2021-11-12 23:51:59,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 1071. [2021-11-12 23:51:59,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 735 states have (on average 1.9129251700680272) internal successors, (1406), 1061 states have internal predecessors, (1406), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 8 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-12 23:51:59,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1440 transitions. [2021-11-12 23:51:59,534 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1440 transitions. Word has length 53 [2021-11-12 23:51:59,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:51:59,534 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 1440 transitions. [2021-11-12 23:51:59,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:59,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1440 transitions. [2021-11-12 23:51:59,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-12 23:51:59,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:51:59,538 INFO L514 BasicCegarLoop]: 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] [2021-11-12 23:51:59,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 23:51:59,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:51:59,751 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr63REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-12 23:51:59,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:51:59,752 INFO L85 PathProgramCache]: Analyzing trace with hash -61627503, now seen corresponding path program 1 times [2021-11-12 23:51:59,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:51:59,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300130801] [2021-11-12 23:51:59,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:51:59,753 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:51:59,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:51:59,754 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:51:59,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 23:51:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:51:59,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:51:59,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:00,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:00,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:00,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 6 [2021-11-12 23:52:00,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:00,392 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:52:00,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1300130801] [2021-11-12 23:52:00,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1300130801] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:52:00,393 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:52:00,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 23:52:00,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499693356] [2021-11-12 23:52:00,393 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:00,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:52:00,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:52:00,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:52:00,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:52:00,394 INFO L87 Difference]: Start difference. First operand 1071 states and 1440 transitions. Second operand has 6 states, 5 states have (on average 21.6) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:52:01,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:01,673 INFO L93 Difference]: Finished difference Result 1038 states and 1374 transitions. [2021-11-12 23:52:01,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:52:01,674 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.6) internal successors, (108), 6 states have internal predecessors, (108), 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 55 [2021-11-12 23:52:01,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:01,680 INFO L225 Difference]: With dead ends: 1038 [2021-11-12 23:52:01,680 INFO L226 Difference]: Without dead ends: 1038 [2021-11-12 23:52:01,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:52:01,681 INFO L933 BasicCegarLoop]: 504 mSDtfsCounter, 1650 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1076.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1653 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.44ms SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1247.09ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:01,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1653 Valid, 768 Invalid, 323 Unknown, 0 Unchecked, 7.44ms Time], IncrementalHoareTripleChecker [63 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1247.09ms Time] [2021-11-12 23:52:01,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2021-11-12 23:52:01,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 970. [2021-11-12 23:52:01,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 667 states have (on average 1.8035982008995501) internal successors, (1203), 961 states have internal predecessors, (1203), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:52:01,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1235 transitions. [2021-11-12 23:52:01,725 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1235 transitions. Word has length 55 [2021-11-12 23:52:01,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:01,726 INFO L470 AbstractCegarLoop]: Abstraction has 970 states and 1235 transitions. [2021-11-12 23:52:01,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.6) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:52:01,726 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1235 transitions. [2021-11-12 23:52:01,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-12 23:52:01,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:01,727 INFO L514 BasicCegarLoop]: 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] [2021-11-12 23:52:01,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:01,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:52:01,943 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-12 23:52:01,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:01,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678057, now seen corresponding path program 1 times [2021-11-12 23:52:01,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:52:01,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868117437] [2021-11-12 23:52:01,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:01,945 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:52:01,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:52:01,946 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:52:01,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 23:52:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:02,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:52:02,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:02,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:52:02,264 INFO L388 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 22 treesize of output 18 [2021-11-12 23:52:02,298 INFO L388 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 25 treesize of output 13 [2021-11-12 23:52:02,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:02,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:02,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:02,397 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:52:02,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [868117437] [2021-11-12 23:52:02,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [868117437] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:52:02,398 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:52:02,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 23:52:02,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356439539] [2021-11-12 23:52:02,398 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:02,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:52:02,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:52:02,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:52:02,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:52:02,399 INFO L87 Difference]: Start difference. First operand 970 states and 1235 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:52:04,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:04,409 INFO L93 Difference]: Finished difference Result 969 states and 1233 transitions. [2021-11-12 23:52:04,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:52:04,410 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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 58 [2021-11-12 23:52:04,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:04,413 INFO L225 Difference]: With dead ends: 969 [2021-11-12 23:52:04,413 INFO L226 Difference]: Without dead ends: 969 [2021-11-12 23:52:04,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:52:04,414 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 4 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1673.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.83ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1958.82ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:04,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 1862 Invalid, 1048 Unknown, 0 Unchecked, 6.83ms Time], IncrementalHoareTripleChecker [1 Valid, 1047 Invalid, 0 Unknown, 0 Unchecked, 1958.82ms Time] [2021-11-12 23:52:04,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2021-11-12 23:52:04,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 969. [2021-11-12 23:52:04,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 667 states have (on average 1.800599700149925) internal successors, (1201), 960 states have internal predecessors, (1201), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:52:04,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1233 transitions. [2021-11-12 23:52:04,435 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1233 transitions. Word has length 58 [2021-11-12 23:52:04,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:04,436 INFO L470 AbstractCegarLoop]: Abstraction has 969 states and 1233 transitions. [2021-11-12 23:52:04,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:52:04,436 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1233 transitions. [2021-11-12 23:52:04,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-12 23:52:04,437 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:04,437 INFO L514 BasicCegarLoop]: 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] [2021-11-12 23:52:04,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-12 23:52:04,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:52:04,649 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-12 23:52:04,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:04,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678056, now seen corresponding path program 1 times [2021-11-12 23:52:04,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:52:04,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69019941] [2021-11-12 23:52:04,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:04,651 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:52:04,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:52:04,651 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:52:04,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-12 23:52:04,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:04,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:52:04,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:04,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:52:05,012 INFO L388 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 19 treesize of output 15 [2021-11-12 23:52:05,024 INFO L388 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 [2021-11-12 23:52:05,096 INFO L388 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 39 treesize of output 27 [2021-11-12 23:52:05,100 INFO L388 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 24 treesize of output 12 [2021-11-12 23:52:05,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:05,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:05,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:05,425 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:52:05,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69019941] [2021-11-12 23:52:05,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69019941] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:52:05,426 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:52:05,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-12 23:52:05,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782386018] [2021-11-12 23:52:05,426 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:05,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:52:05,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:52:05,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:52:05,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:52:05,428 INFO L87 Difference]: Start difference. First operand 969 states and 1233 transitions. Second operand has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 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) [2021-11-12 23:52:12,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:12,499 INFO L93 Difference]: Finished difference Result 968 states and 1231 transitions. [2021-11-12 23:52:12,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:52:12,500 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 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 58 [2021-11-12 23:52:12,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:12,503 INFO L225 Difference]: With dead ends: 968 [2021-11-12 23:52:12,503 INFO L226 Difference]: Without dead ends: 968 [2021-11-12 23:52:12,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:52:12,504 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 3 mSDsluCounter, 1916 mSDsCounter, 0 mSdLazyCounter, 1716 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6287.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2642 SdHoareTripleChecker+Invalid, 1717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.19ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6972.04ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:12,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2642 Invalid, 1717 Unknown, 0 Unchecked, 11.19ms Time], IncrementalHoareTripleChecker [1 Valid, 1716 Invalid, 0 Unknown, 0 Unchecked, 6972.04ms Time] [2021-11-12 23:52:12,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2021-11-12 23:52:12,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 968. [2021-11-12 23:52:12,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 665 states have (on average 1.8030075187969925) internal successors, (1199), 959 states have internal predecessors, (1199), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:52:12,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1231 transitions. [2021-11-12 23:52:12,525 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1231 transitions. Word has length 58 [2021-11-12 23:52:12,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:12,526 INFO L470 AbstractCegarLoop]: Abstraction has 968 states and 1231 transitions. [2021-11-12 23:52:12,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 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) [2021-11-12 23:52:12,526 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1231 transitions. [2021-11-12 23:52:12,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-12 23:52:12,527 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:12,527 INFO L514 BasicCegarLoop]: 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] [2021-11-12 23:52:12,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-12 23:52:12,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:52:12,739 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-12 23:52:12,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:12,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1238792034, now seen corresponding path program 1 times [2021-11-12 23:52:12,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:52:12,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [12467042] [2021-11-12 23:52:12,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:12,741 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:52:12,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:52:12,742 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:52:12,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-12 23:52:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:12,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:52:12,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:13,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:13,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:13,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:13,248 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:52:13,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [12467042] [2021-11-12 23:52:13,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [12467042] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:52:13,249 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:52:13,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:52:13,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812423289] [2021-11-12 23:52:13,249 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:13,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:52:13,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:52:13,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:52:13,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:52:13,250 INFO L87 Difference]: Start difference. First operand 968 states and 1231 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2021-11-12 23:52:13,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:13,365 INFO L93 Difference]: Finished difference Result 978 states and 1245 transitions. [2021-11-12 23:52:13,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:52:13,371 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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 66 [2021-11-12 23:52:13,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:13,379 INFO L225 Difference]: With dead ends: 978 [2021-11-12 23:52:13,379 INFO L226 Difference]: Without dead ends: 978 [2021-11-12 23:52:13,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:52:13,380 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 7 mSDsluCounter, 2167 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2893 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.18ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 81.64ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:13,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 2893 Invalid, 37 Unknown, 0 Unchecked, 3.18ms Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 81.64ms Time] [2021-11-12 23:52:13,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2021-11-12 23:52:13,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 978. [2021-11-12 23:52:13,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 673 states have (on average 1.799405646359584) internal successors, (1211), 968 states have internal predecessors, (1211), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2021-11-12 23:52:13,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1245 transitions. [2021-11-12 23:52:13,418 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1245 transitions. Word has length 66 [2021-11-12 23:52:13,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:13,419 INFO L470 AbstractCegarLoop]: Abstraction has 978 states and 1245 transitions. [2021-11-12 23:52:13,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2021-11-12 23:52:13,419 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1245 transitions. [2021-11-12 23:52:13,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-12 23:52:13,420 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:13,420 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:52:13,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:13,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:52:13,639 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-12 23:52:13,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:13,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1483591170, now seen corresponding path program 1 times [2021-11-12 23:52:13,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:52:13,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [140628917] [2021-11-12 23:52:13,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:13,640 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:52:13,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:52:13,641 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:52:13,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-12 23:52:13,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:13,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:52:13,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:14,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:14,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:14,259 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:14,260 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:52:14,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [140628917] [2021-11-12 23:52:14,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [140628917] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:52:14,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1699074092] [2021-11-12 23:52:14,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:14,260 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:52:14,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:52:14,262 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:52:14,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-12 23:52:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:14,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:52:14,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:14,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:14,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:14,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:14,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1699074092] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:52:14,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782950793] [2021-11-12 23:52:14,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:14,780 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:52:14,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:52:14,781 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:52:14,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-12 23:52:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:14,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:52:14,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:15,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:15,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:15,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:15,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782950793] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:52:15,337 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:52:15,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-12 23:52:15,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981758889] [2021-11-12 23:52:15,338 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:52:15,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:52:15,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:52:15,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:52:15,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:52:15,340 INFO L87 Difference]: Start difference. First operand 978 states and 1245 transitions. Second operand has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 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) [2021-11-12 23:52:15,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:15,701 INFO L93 Difference]: Finished difference Result 992 states and 1263 transitions. [2021-11-12 23:52:15,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:52:15,702 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 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 68 [2021-11-12 23:52:15,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:15,706 INFO L225 Difference]: With dead ends: 992 [2021-11-12 23:52:15,706 INFO L226 Difference]: Without dead ends: 986 [2021-11-12 23:52:15,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:52:15,707 INFO L933 BasicCegarLoop]: 727 mSDtfsCounter, 36 mSDsluCounter, 3611 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 145.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 4338 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.29ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 170.13ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:15,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 4338 Invalid, 132 Unknown, 0 Unchecked, 3.29ms Time], IncrementalHoareTripleChecker [26 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 170.13ms Time] [2021-11-12 23:52:15,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2021-11-12 23:52:15,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 984. [2021-11-12 23:52:15,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 679 states have (on average 1.7938144329896908) internal successors, (1218), 974 states have internal predecessors, (1218), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2021-11-12 23:52:15,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1252 transitions. [2021-11-12 23:52:15,728 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1252 transitions. Word has length 68 [2021-11-12 23:52:15,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:15,729 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1252 transitions. [2021-11-12 23:52:15,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 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) [2021-11-12 23:52:15,729 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1252 transitions. [2021-11-12 23:52:15,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-12 23:52:15,730 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:15,730 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:52:15,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:15,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:16,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:16,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:52:16,352 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-12 23:52:16,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:16,352 INFO L85 PathProgramCache]: Analyzing trace with hash 833289406, now seen corresponding path program 2 times [2021-11-12 23:52:16,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:52:16,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [62020516] [2021-11-12 23:52:16,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:52:16,353 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:52:16,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:52:16,354 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:52:16,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-12 23:52:16,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:52:16,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:52:16,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-12 23:52:16,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:16,879 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:16,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:17,486 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:17,487 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:52:17,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [62020516] [2021-11-12 23:52:17,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [62020516] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:52:17,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1356305403] [2021-11-12 23:52:17,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:52:17,488 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:52:17,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:52:17,489 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:52:17,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-12 23:52:18,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:52:18,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:52:18,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-12 23:52:18,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:18,930 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:18,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:19,265 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:19,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1356305403] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:52:19,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489659026] [2021-11-12 23:52:19,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:52:19,266 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:52:19,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:52:19,267 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:52:19,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-12 23:52:26,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:52:26,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:52:26,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 23:52:26,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:26,280 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:26,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:26,641 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:26,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489659026] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:52:26,643 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:52:26,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 19 [2021-11-12 23:52:26,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592648925] [2021-11-12 23:52:26,644 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:52:26,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-12 23:52:26,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:52:26,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-12 23:52:26,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2021-11-12 23:52:26,649 INFO L87 Difference]: Start difference. First operand 984 states and 1252 transitions. Second operand has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 19 states have internal predecessors, (81), 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) [2021-11-12 23:52:28,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:28,414 INFO L93 Difference]: Finished difference Result 1010 states and 1297 transitions. [2021-11-12 23:52:28,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-12 23:52:28,415 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 19 states have internal predecessors, (81), 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 72 [2021-11-12 23:52:28,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:28,422 INFO L225 Difference]: With dead ends: 1010 [2021-11-12 23:52:28,422 INFO L226 Difference]: Without dead ends: 1004 [2021-11-12 23:52:28,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 408 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=387, Invalid=735, Unknown=0, NotChecked=0, Total=1122 [2021-11-12 23:52:28,424 INFO L933 BasicCegarLoop]: 730 mSDtfsCounter, 80 mSDsluCounter, 5801 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 523.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 6531 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.53ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 599.83ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:28,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 6531 Invalid, 366 Unknown, 0 Unchecked, 6.53ms Time], IncrementalHoareTripleChecker [51 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 599.83ms Time] [2021-11-12 23:52:28,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2021-11-12 23:52:28,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 996. [2021-11-12 23:52:28,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 691 states have (on average 1.784370477568741) internal successors, (1233), 986 states have internal predecessors, (1233), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2021-11-12 23:52:28,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1267 transitions. [2021-11-12 23:52:28,452 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1267 transitions. Word has length 72 [2021-11-12 23:52:28,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:28,453 INFO L470 AbstractCegarLoop]: Abstraction has 996 states and 1267 transitions. [2021-11-12 23:52:28,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 19 states have internal predecessors, (81), 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) [2021-11-12 23:52:28,453 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1267 transitions. [2021-11-12 23:52:28,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-12 23:52:28,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:28,455 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:52:28,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:28,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:28,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:29,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:52:29,083 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-12 23:52:29,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:29,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1038250558, now seen corresponding path program 3 times [2021-11-12 23:52:29,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:52:29,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1674612959] [2021-11-12 23:52:29,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:52:29,084 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:52:29,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:52:29,085 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:52:29,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-12 23:52:29,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-12 23:52:29,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:52:29,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-12 23:52:29,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:30,173 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:30,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:31,931 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:31,932 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:52:31,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1674612959] [2021-11-12 23:52:31,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1674612959] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:52:31,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1372381341] [2021-11-12 23:52:31,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:52:31,933 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:52:31,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:52:31,950 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:52:31,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-12 23:52:38,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-12 23:52:38,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:52:38,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-12 23:52:38,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:38,679 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:38,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:39,056 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:39,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1372381341] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:52:39,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169149548] [2021-11-12 23:52:39,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:52:39,057 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:52:39,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:52:39,059 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:52:39,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b89650-9d6d-416f-b37f-8dfb74ed4a4c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process