./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7 --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 8d4416b38cd75f122474354d64a020f92e3751959548582c6308a6e879679f77 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:11:16,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:11:16,874 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:11:16,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:11:16,928 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:11:16,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:11:16,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:11:16,938 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:11:16,941 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:11:16,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:11:16,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:11:16,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:11:16,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:11:16,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:11:16,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:11:16,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:11:16,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:11:16,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:11:16,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:11:16,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:11:16,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:11:16,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:11:16,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:11:16,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:11:16,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:11:16,972 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:11:16,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:11:16,973 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:11:16,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:11:16,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:11:16,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:11:16,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:11:16,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:11:16,978 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:11:16,979 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:11:16,979 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:11:16,980 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:11:16,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:11:16,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:11:16,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:11:16,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:11:16,989 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-25 20:11:17,029 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:11:17,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:11:17,030 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:11:17,030 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:11:17,031 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:11:17,035 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:11:17,036 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:11:17,036 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:11:17,036 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:11:17,036 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:11:17,037 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:11:17,037 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:11:17,037 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:11:17,038 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:11:17,038 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:11:17,038 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:11:17,038 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:11:17,038 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:11:17,039 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 20:11:17,039 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 20:11:17,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:11:17,040 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 20:11:17,040 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 20:11:17,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:11:17,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 20:11:17,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:11:17,042 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-25 20:11:17,042 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-25 20:11:17,043 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-25 20:11:17,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:11:17,043 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 20:11:17,043 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 20:11:17,043 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:11:17,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:11:17,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:11:17,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:11:17,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:11:17,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:11:17,045 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:11:17,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:11:17,045 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:11:17,045 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:11:17,045 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_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d4416b38cd75f122474354d64a020f92e3751959548582c6308a6e879679f77 [2021-11-25 20:11:17,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:11:17,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:11:17,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:11:17,339 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:11:17,340 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:11:17,341 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-1.i [2021-11-25 20:11:17,408 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/data/d179ed4cd/4b197090bc6847e1981563ff5efea013/FLAG5e7d7dd31 [2021-11-25 20:11:18,004 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:11:18,005 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-1.i [2021-11-25 20:11:18,042 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/data/d179ed4cd/4b197090bc6847e1981563ff5efea013/FLAG5e7d7dd31 [2021-11-25 20:11:18,239 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/data/d179ed4cd/4b197090bc6847e1981563ff5efea013 [2021-11-25 20:11:18,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:11:18,243 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:11:18,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:11:18,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:11:18,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:11:18,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:11:18" (1/1) ... [2021-11-25 20:11:18,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eeb88c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:11:18, skipping insertion in model container [2021-11-25 20:11:18,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:11:18" (1/1) ... [2021-11-25 20:11:18,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:11:18,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:11:18,741 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-1.i[33021,33034] [2021-11-25 20:11:18,925 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:11:18,935 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) [2021-11-25 20:11:18,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6dfd54f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:11:18, skipping insertion in model container [2021-11-25 20:11:18,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:11:18,936 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-25 20:11:18,938 INFO L158 Benchmark]: Toolchain (without parser) took 694.25ms. Allocated memory is still 94.4MB. Free memory was 71.8MB in the beginning and 57.2MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-25 20:11:18,939 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 94.4MB. Free memory was 68.4MB in the beginning and 68.4MB in the end (delta: 45.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 20:11:18,940 INFO L158 Benchmark]: CACSL2BoogieTranslator took 691.10ms. Allocated memory is still 94.4MB. Free memory was 71.6MB in the beginning and 57.2MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-25 20:11:18,942 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 94.4MB. Free memory was 68.4MB in the beginning and 68.4MB in the end (delta: 45.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 691.10ms. Allocated memory is still 94.4MB. Free memory was 71.6MB in the beginning and 57.2MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 752]: Unsupported Syntax Found a cast between two array/pointer types 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_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7 --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 8d4416b38cd75f122474354d64a020f92e3751959548582c6308a6e879679f77 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:11:21,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:11:21,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:11:21,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:11:21,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:11:21,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:11:21,291 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:11:21,296 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:11:21,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:11:21,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:11:21,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:11:21,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:11:21,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:11:21,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:11:21,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:11:21,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:11:21,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:11:21,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:11:21,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:11:21,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:11:21,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:11:21,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:11:21,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:11:21,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:11:21,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:11:21,360 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:11:21,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:11:21,362 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:11:21,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:11:21,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:11:21,364 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:11:21,365 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:11:21,366 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:11:21,367 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:11:21,368 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:11:21,368 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:11:21,369 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:11:21,369 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:11:21,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:11:21,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:11:21,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:11:21,372 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-25 20:11:21,401 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:11:21,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:11:21,401 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:11:21,402 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:11:21,402 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:11:21,403 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:11:21,403 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:11:21,403 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:11:21,403 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:11:21,403 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:11:21,404 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:11:21,404 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:11:21,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 20:11:21,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 20:11:21,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:11:21,405 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 20:11:21,406 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 20:11:21,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:11:21,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 20:11:21,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:11:21,407 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-25 20:11:21,407 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-25 20:11:21,407 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-25 20:11:21,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:11:21,408 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 20:11:21,408 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 20:11:21,408 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 20:11:21,408 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 20:11:21,409 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:11:21,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:11:21,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 20:11:21,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:11:21,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:11:21,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:11:21,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:11:21,410 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 20:11:21,411 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 20:11:21,411 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:11:21,411 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:11:21,411 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_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d4416b38cd75f122474354d64a020f92e3751959548582c6308a6e879679f77 [2021-11-25 20:11:21,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:11:21,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:11:21,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:11:21,847 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:11:21,847 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:11:21,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-1.i [2021-11-25 20:11:21,918 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/data/c9a6b21b1/f71aeffccf3f47f7b059e45a83e07654/FLAG2a89a0281 [2021-11-25 20:11:22,633 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:11:22,634 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-1.i [2021-11-25 20:11:22,651 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/data/c9a6b21b1/f71aeffccf3f47f7b059e45a83e07654/FLAG2a89a0281 [2021-11-25 20:11:22,849 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/data/c9a6b21b1/f71aeffccf3f47f7b059e45a83e07654 [2021-11-25 20:11:22,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:11:22,853 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:11:22,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:11:22,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:11:22,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:11:22,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:11:22" (1/1) ... [2021-11-25 20:11:22,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59677445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:11:22, skipping insertion in model container [2021-11-25 20:11:22,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:11:22" (1/1) ... [2021-11-25 20:11:22,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:11:22,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:11:23,431 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-1.i[33021,33034] [2021-11-25 20:11:23,622 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:11:23,634 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-25 20:11:23,661 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:11:23,697 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-1.i[33021,33034] [2021-11-25 20:11:23,783 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:11:23,787 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:11:23,813 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-1.i[33021,33034] [2021-11-25 20:11:23,867 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:11:23,942 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:11:23,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:11:23 WrapperNode [2021-11-25 20:11:23,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:11:23,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:11:23,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:11:23,945 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:11:23,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:11:23" (1/1) ... [2021-11-25 20:11:24,008 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:11:23" (1/1) ... [2021-11-25 20:11:24,068 INFO L137 Inliner]: procedures = 180, calls = 349, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1166 [2021-11-25 20:11:24,069 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:11:24,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:11:24,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:11:24,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:11:24,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:11:23" (1/1) ... [2021-11-25 20:11:24,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:11:23" (1/1) ... [2021-11-25 20:11:24,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:11:23" (1/1) ... [2021-11-25 20:11:24,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:11:23" (1/1) ... [2021-11-25 20:11:24,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:11:23" (1/1) ... [2021-11-25 20:11:24,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:11:23" (1/1) ... [2021-11-25 20:11:24,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:11:23" (1/1) ... [2021-11-25 20:11:24,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:11:24,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:11:24,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:11:24,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:11:24,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:11:23" (1/1) ... [2021-11-25 20:11:24,267 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:11:24,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:11:24,324 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:11:24,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:11:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-25 20:11:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-25 20:11:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 20:11:24,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 20:11:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 20:11:24,376 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 20:11:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 20:11:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:11:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:11:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 20:11:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 20:11:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:11:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-25 20:11:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 20:11:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:11:24,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:11:24,611 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:11:24,613 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:11:24,618 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-25 20:11:30,449 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:11:30,467 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:11:30,467 INFO L301 CfgBuilder]: Removed 60 assume(true) statements. [2021-11-25 20:11:30,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:11:30 BoogieIcfgContainer [2021-11-25 20:11:30,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:11:30,474 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:11:30,474 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:11:30,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:11:30,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:11:22" (1/3) ... [2021-11-25 20:11:30,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a54df7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:11:30, skipping insertion in model container [2021-11-25 20:11:30,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:11:23" (2/3) ... [2021-11-25 20:11:30,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a54df7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:11:30, skipping insertion in model container [2021-11-25 20:11:30,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:11:30" (3/3) ... [2021-11-25 20:11:30,480 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test4-1.i [2021-11-25 20:11:30,486 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:11:30,487 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 648 error locations. [2021-11-25 20:11:30,532 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:11:30,539 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 [2021-11-25 20:11:30,540 INFO L340 AbstractCegarLoop]: Starting to check reachability of 648 error locations. [2021-11-25 20:11:30,574 INFO L276 IsEmpty]: Start isEmpty. Operand has 1274 states, 613 states have (on average 2.257748776508972) internal successors, (1384), 1265 states have internal predecessors, (1384), 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) [2021-11-25 20:11:30,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 20:11:30,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:11:30,581 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 20:11:30,581 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-25 20:11:30,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:11:30,587 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2021-11-25 20:11:30,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:11:30,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [420618366] [2021-11-25 20:11:30,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:11:30,600 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:11:30,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:11:30,603 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:11:30,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 20:11:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:11:30,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-25 20:11:30,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:11:30,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:11:30,863 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:11:30,863 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:11:30,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [420618366] [2021-11-25 20:11:30,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [420618366] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:11:30,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:11:30,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:11:30,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189257558] [2021-11-25 20:11:30,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:11:30,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 20:11:30,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:11:30,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 20:11:30,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 20:11:30,906 INFO L87 Difference]: Start difference. First operand has 1274 states, 613 states have (on average 2.257748776508972) internal successors, (1384), 1265 states have internal predecessors, (1384), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:11:31,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:11:31,054 INFO L93 Difference]: Finished difference Result 1256 states and 1330 transitions. [2021-11-25 20:11:31,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 20:11:31,069 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 [2021-11-25 20:11:31,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:11:31,110 INFO L225 Difference]: With dead ends: 1256 [2021-11-25 20:11:31,110 INFO L226 Difference]: Without dead ends: 1254 [2021-11-25 20:11:31,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 20:11:31,118 INFO L933 BasicCegarLoop]: 1330 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:11:31,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:11:31,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2021-11-25 20:11:31,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1254. [2021-11-25 20:11:31,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1254 states, 604 states have (on average 2.1456953642384105) internal successors, (1296), 1245 states have internal predecessors, (1296), 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) [2021-11-25 20:11:31,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1328 transitions. [2021-11-25 20:11:31,249 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1328 transitions. Word has length 5 [2021-11-25 20:11:31,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:11:31,251 INFO L470 AbstractCegarLoop]: Abstraction has 1254 states and 1328 transitions. [2021-11-25 20:11:31,251 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) [2021-11-25 20:11:31,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1328 transitions. [2021-11-25 20:11:31,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 20:11:31,252 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:11:31,252 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 20:11:31,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 20:11:31,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:11:31,470 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-25 20:11:31,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:11:31,471 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2021-11-25 20:11:31,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:11:31,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [199276936] [2021-11-25 20:11:31,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:11:31,473 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:11:31,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:11:31,474 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:11:31,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 20:11:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:11:31,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:11:31,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:11:31,659 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 [2021-11-25 20:11:31,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:11:31,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:11:31,692 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:11:31,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [199276936] [2021-11-25 20:11:31,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [199276936] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:11:31,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:11:31,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:11:31,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979119860] [2021-11-25 20:11:31,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:11:31,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:11:31,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:11:31,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:11:31,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:11:31,696 INFO L87 Difference]: Start difference. First operand 1254 states and 1328 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) [2021-11-25 20:11:34,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:11:34,374 INFO L93 Difference]: Finished difference Result 1291 states and 1378 transitions. [2021-11-25 20:11:34,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:11:34,375 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 [2021-11-25 20:11:34,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:11:34,382 INFO L225 Difference]: With dead ends: 1291 [2021-11-25 20:11:34,382 INFO L226 Difference]: Without dead ends: 1291 [2021-11-25 20:11:34,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:11:34,384 INFO L933 BasicCegarLoop]: 600 mSDtfsCounter, 1159 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:11:34,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1175 Valid, 704 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-25 20:11:34,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2021-11-25 20:11:34,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1237. [2021-11-25 20:11:34,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 680 states have (on average 1.9676470588235293) internal successors, (1338), 1228 states have internal predecessors, (1338), 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) [2021-11-25 20:11:34,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 1370 transitions. [2021-11-25 20:11:34,419 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 1370 transitions. Word has length 5 [2021-11-25 20:11:34,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:11:34,424 INFO L470 AbstractCegarLoop]: Abstraction has 1237 states and 1370 transitions. [2021-11-25 20:11:34,424 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) [2021-11-25 20:11:34,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 1370 transitions. [2021-11-25 20:11:34,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 20:11:34,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:11:34,425 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 20:11:34,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 20:11:34,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:11:34,638 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-25 20:11:34,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:11:34,639 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2021-11-25 20:11:34,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:11:34,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626681307] [2021-11-25 20:11:34,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:11:34,642 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:11:34,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:11:34,644 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:11:34,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-25 20:11:34,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:11:34,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:11:34,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:11:34,798 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 [2021-11-25 20:11:34,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:11:34,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:11:34,830 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:11:34,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1626681307] [2021-11-25 20:11:34,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1626681307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:11:34,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:11:34,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:11:34,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629925288] [2021-11-25 20:11:34,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:11:34,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:11:34,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:11:34,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:11:34,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:11:34,832 INFO L87 Difference]: Start difference. First operand 1237 states and 1370 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) [2021-11-25 20:11:38,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:11:38,120 INFO L93 Difference]: Finished difference Result 1540 states and 1693 transitions. [2021-11-25 20:11:38,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:11:38,121 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 [2021-11-25 20:11:38,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:11:38,130 INFO L225 Difference]: With dead ends: 1540 [2021-11-25 20:11:38,130 INFO L226 Difference]: Without dead ends: 1540 [2021-11-25 20:11:38,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:11:38,132 INFO L933 BasicCegarLoop]: 996 mSDtfsCounter, 504 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:11:38,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [504 Valid, 1483 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-25 20:11:38,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2021-11-25 20:11:38,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1393. [2021-11-25 20:11:38,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1393 states, 846 states have (on average 1.9432624113475176) internal successors, (1644), 1384 states have internal predecessors, (1644), 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) [2021-11-25 20:11:38,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 1676 transitions. [2021-11-25 20:11:38,171 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 1676 transitions. Word has length 5 [2021-11-25 20:11:38,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:11:38,171 INFO L470 AbstractCegarLoop]: Abstraction has 1393 states and 1676 transitions. [2021-11-25 20:11:38,172 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) [2021-11-25 20:11:38,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 1676 transitions. [2021-11-25 20:11:38,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 20:11:38,173 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:11:38,173 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 20:11:38,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-25 20:11:38,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:11:38,383 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-25 20:11:38,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:11:38,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1157601995, now seen corresponding path program 1 times [2021-11-25 20:11:38,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:11:38,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [370907699] [2021-11-25 20:11:38,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:11:38,385 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:11:38,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:11:38,386 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:11:38,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-25 20:11:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:11:38,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:11:38,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:11:38,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:11:38,512 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:11:38,513 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:11:38,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [370907699] [2021-11-25 20:11:38,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [370907699] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:11:38,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:11:38,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:11:38,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237863747] [2021-11-25 20:11:38,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:11:38,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:11:38,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:11:38,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:11:38,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:11:38,516 INFO L87 Difference]: Start difference. First operand 1393 states and 1676 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:11:38,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:11:38,623 INFO L93 Difference]: Finished difference Result 2737 states and 3283 transitions. [2021-11-25 20:11:38,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:11:38,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-25 20:11:38,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:11:38,644 INFO L225 Difference]: With dead ends: 2737 [2021-11-25 20:11:38,644 INFO L226 Difference]: Without dead ends: 2737 [2021-11-25 20:11:38,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:11:38,645 INFO L933 BasicCegarLoop]: 1675 mSDtfsCounter, 1143 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 2894 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:11:38,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1149 Valid, 2894 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:11:38,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2021-11-25 20:11:38,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 1394. [2021-11-25 20:11:38,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 847 states have (on average 1.9421487603305785) internal successors, (1645), 1385 states have internal predecessors, (1645), 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) [2021-11-25 20:11:38,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 1677 transitions. [2021-11-25 20:11:38,714 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 1677 transitions. Word has length 6 [2021-11-25 20:11:38,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:11:38,715 INFO L470 AbstractCegarLoop]: Abstraction has 1394 states and 1677 transitions. [2021-11-25 20:11:38,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:11:38,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 1677 transitions. [2021-11-25 20:11:38,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 20:11:38,716 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:11:38,716 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:11:38,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-25 20:11:38,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:11:38,927 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-25 20:11:38,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:11:38,927 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2021-11-25 20:11:38,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:11:38,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49477020] [2021-11-25 20:11:38,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:11:38,928 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:11:38,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:11:38,929 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:11:38,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-25 20:11:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:11:39,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:11:39,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:11:39,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:11:39,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:11:39,109 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:11:39,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49477020] [2021-11-25 20:11:39,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [49477020] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:11:39,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:11:39,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:11:39,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762303563] [2021-11-25 20:11:39,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:11:39,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:11:39,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:11:39,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:11:39,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:11:39,112 INFO L87 Difference]: Start difference. First operand 1394 states and 1677 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:11:39,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:11:39,158 INFO L93 Difference]: Finished difference Result 1358 states and 1640 transitions. [2021-11-25 20:11:39,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:11:39,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-25 20:11:39,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:11:39,167 INFO L225 Difference]: With dead ends: 1358 [2021-11-25 20:11:39,167 INFO L226 Difference]: Without dead ends: 1358 [2021-11-25 20:11:39,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:11:39,168 INFO L933 BasicCegarLoop]: 1177 mSDtfsCounter, 1137 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1153 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:11:39,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1153 Valid, 1210 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:11:39,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1358 states. [2021-11-25 20:11:39,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1358 to 1352. [2021-11-25 20:11:39,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 829 states have (on average 1.9324487334137515) internal successors, (1602), 1343 states have internal predecessors, (1602), 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) [2021-11-25 20:11:39,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1634 transitions. [2021-11-25 20:11:39,202 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1634 transitions. Word has length 11 [2021-11-25 20:11:39,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:11:39,203 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 1634 transitions. [2021-11-25 20:11:39,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:11:39,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1634 transitions. [2021-11-25 20:11:39,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 20:11:39,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:11:39,204 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:11:39,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-25 20:11:39,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:11:39,415 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-25 20:11:39,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:11:39,416 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2021-11-25 20:11:39,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:11:39,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [984877178] [2021-11-25 20:11:39,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:11:39,416 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:11:39,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:11:39,417 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:11:39,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-25 20:11:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:11:39,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:11:39,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:11:39,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:11:39,615 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:11:39,616 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:11:39,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [984877178] [2021-11-25 20:11:39,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [984877178] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:11:39,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:11:39,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:11:39,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374807237] [2021-11-25 20:11:39,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:11:39,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:11:39,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:11:39,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:11:39,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:11:39,623 INFO L87 Difference]: Start difference. First operand 1352 states and 1634 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) [2021-11-25 20:11:39,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:11:39,738 INFO L93 Difference]: Finished difference Result 1337 states and 1612 transitions. [2021-11-25 20:11:39,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:11:39,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-25 20:11:39,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:11:39,748 INFO L225 Difference]: With dead ends: 1337 [2021-11-25 20:11:39,748 INFO L226 Difference]: Without dead ends: 1337 [2021-11-25 20:11:39,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:11:39,751 INFO L933 BasicCegarLoop]: 1132 mSDtfsCounter, 1108 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 2290 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:11:39,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1124 Valid, 2290 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:11:39,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2021-11-25 20:11:39,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1330. [2021-11-25 20:11:39,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1330 states, 821 states have (on average 1.9159561510353227) internal successors, (1573), 1321 states have internal predecessors, (1573), 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) [2021-11-25 20:11:39,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1605 transitions. [2021-11-25 20:11:39,790 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1605 transitions. Word has length 13 [2021-11-25 20:11:39,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:11:39,791 INFO L470 AbstractCegarLoop]: Abstraction has 1330 states and 1605 transitions. [2021-11-25 20:11:39,791 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) [2021-11-25 20:11:39,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1605 transitions. [2021-11-25 20:11:39,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-25 20:11:39,793 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:11:39,793 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] [2021-11-25 20:11:39,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-25 20:11:40,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:11:40,005 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-25 20:11:40,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:11:40,005 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2021-11-25 20:11:40,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:11:40,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221176147] [2021-11-25 20:11:40,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:11:40,006 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:11:40,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:11:40,007 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:11:40,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-25 20:11:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:11:40,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:11:40,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:11:40,205 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 [2021-11-25 20:11:40,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:11:40,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:11:40,311 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:11:40,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221176147] [2021-11-25 20:11:40,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221176147] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:11:40,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:11:40,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:11:40,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571923855] [2021-11-25 20:11:40,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:11:40,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:11:40,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:11:40,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:11:40,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:11:40,313 INFO L87 Difference]: Start difference. First operand 1330 states and 1605 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) [2021-11-25 20:11:44,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:11:44,030 INFO L93 Difference]: Finished difference Result 1791 states and 2054 transitions. [2021-11-25 20:11:44,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:11:44,030 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 [2021-11-25 20:11:44,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:11:44,040 INFO L225 Difference]: With dead ends: 1791 [2021-11-25 20:11:44,040 INFO L226 Difference]: Without dead ends: 1791 [2021-11-25 20:11:44,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:11:44,041 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 2394 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2407 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:11:44,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2407 Valid, 1007 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-25 20:11:44,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2021-11-25 20:11:44,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1326. [2021-11-25 20:11:44,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1326 states, 821 states have (on average 1.9110840438489647) internal successors, (1569), 1317 states have internal predecessors, (1569), 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) [2021-11-25 20:11:44,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1601 transitions. [2021-11-25 20:11:44,078 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1601 transitions. Word has length 27 [2021-11-25 20:11:44,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:11:44,079 INFO L470 AbstractCegarLoop]: Abstraction has 1326 states and 1601 transitions. [2021-11-25 20:11:44,079 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) [2021-11-25 20:11:44,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1601 transitions. [2021-11-25 20:11:44,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-25 20:11:44,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:11:44,080 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] [2021-11-25 20:11:44,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-25 20:11:44,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:11:44,294 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-25 20:11:44,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:11:44,296 INFO L85 PathProgramCache]: Analyzing trace with hash -22216186, now seen corresponding path program 1 times [2021-11-25 20:11:44,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:11:44,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [483332015] [2021-11-25 20:11:44,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:11:44,297 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:11:44,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:11:44,298 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:11:44,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-25 20:11:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:11:44,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 20:11:44,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:11:44,471 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 [2021-11-25 20:11:44,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:11:44,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:11:44,674 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:11:44,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [483332015] [2021-11-25 20:11:44,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [483332015] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:11:44,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:11:44,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:11:44,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314070668] [2021-11-25 20:11:44,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:11:44,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:11:44,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:11:44,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:11:44,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:11:44,676 INFO L87 Difference]: Start difference. First operand 1326 states and 1601 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) [2021-11-25 20:11:48,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:11:48,260 INFO L93 Difference]: Finished difference Result 1510 states and 1675 transitions. [2021-11-25 20:11:48,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:11:48,260 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 [2021-11-25 20:11:48,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:11:48,268 INFO L225 Difference]: With dead ends: 1510 [2021-11-25 20:11:48,268 INFO L226 Difference]: Without dead ends: 1510 [2021-11-25 20:11:48,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:11:48,269 INFO L933 BasicCegarLoop]: 956 mSDtfsCounter, 851 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 1343 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 1923 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:11:48,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [861 Valid, 1923 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1343 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-25 20:11:48,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1510 states. [2021-11-25 20:11:48,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1510 to 1322. [2021-11-25 20:11:48,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1322 states, 821 states have (on average 1.9062119366626067) internal successors, (1565), 1313 states have internal predecessors, (1565), 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) [2021-11-25 20:11:48,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 1597 transitions. [2021-11-25 20:11:48,305 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 1597 transitions. Word has length 27 [2021-11-25 20:11:48,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:11:48,305 INFO L470 AbstractCegarLoop]: Abstraction has 1322 states and 1597 transitions. [2021-11-25 20:11:48,305 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) [2021-11-25 20:11:48,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 1597 transitions. [2021-11-25 20:11:48,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-25 20:11:48,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:11:48,307 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] [2021-11-25 20:11:48,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-25 20:11:48,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:11:48,516 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-25 20:11:48,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:11:48,516 INFO L85 PathProgramCache]: Analyzing trace with hash 810363537, now seen corresponding path program 1 times [2021-11-25 20:11:48,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:11:48,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1254860233] [2021-11-25 20:11:48,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:11:48,517 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:11:48,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:11:48,518 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:11:48,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-25 20:11:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:11:48,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:11:48,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:11:48,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:11:48,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:11:48,836 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:11:48,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1254860233] [2021-11-25 20:11:48,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1254860233] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:11:48,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:11:48,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:11:48,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441027669] [2021-11-25 20:11:48,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:11:48,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:11:48,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:11:48,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:11:48,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:11:48,839 INFO L87 Difference]: Start difference. First operand 1322 states and 1597 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) [2021-11-25 20:11:48,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:11:48,908 INFO L93 Difference]: Finished difference Result 1322 states and 1593 transitions. [2021-11-25 20:11:48,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:11:48,909 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 [2021-11-25 20:11:48,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:11:48,917 INFO L225 Difference]: With dead ends: 1322 [2021-11-25 20:11:48,917 INFO L226 Difference]: Without dead ends: 1322 [2021-11-25 20:11:48,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:11:48,918 INFO L933 BasicCegarLoop]: 1126 mSDtfsCounter, 1084 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 2268 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:11:48,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1100 Valid, 2268 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:11:48,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2021-11-25 20:11:48,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1316. [2021-11-25 20:11:48,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 815 states have (on average 1.9079754601226995) internal successors, (1555), 1307 states have internal predecessors, (1555), 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) [2021-11-25 20:11:48,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1587 transitions. [2021-11-25 20:11:48,959 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1587 transitions. Word has length 42 [2021-11-25 20:11:48,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:11:48,961 INFO L470 AbstractCegarLoop]: Abstraction has 1316 states and 1587 transitions. [2021-11-25 20:11:48,962 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) [2021-11-25 20:11:48,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1587 transitions. [2021-11-25 20:11:48,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-25 20:11:48,967 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:11:48,967 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] [2021-11-25 20:11:48,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-25 20:11:49,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:11:49,179 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-25 20:11:49,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:11:49,180 INFO L85 PathProgramCache]: Analyzing trace with hash 2087041861, now seen corresponding path program 1 times [2021-11-25 20:11:49,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:11:49,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [776367306] [2021-11-25 20:11:49,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:11:49,181 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:11:49,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:11:49,182 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:11:49,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-25 20:11:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:11:49,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:11:49,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:11:49,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:11:49,759 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:11:49,760 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:11:49,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [776367306] [2021-11-25 20:11:49,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [776367306] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:11:49,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:11:49,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:11:49,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296476208] [2021-11-25 20:11:49,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:11:49,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:11:49,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:11:49,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:11:49,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:11:49,762 INFO L87 Difference]: Start difference. First operand 1316 states and 1587 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) [2021-11-25 20:11:49,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:11:49,833 INFO L93 Difference]: Finished difference Result 1362 states and 1633 transitions. [2021-11-25 20:11:49,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:11:49,834 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 [2021-11-25 20:11:49,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:11:49,841 INFO L225 Difference]: With dead ends: 1362 [2021-11-25 20:11:49,841 INFO L226 Difference]: Without dead ends: 1362 [2021-11-25 20:11:49,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:11:49,842 INFO L933 BasicCegarLoop]: 1134 mSDtfsCounter, 67 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 2173 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:11:49,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 2173 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:11:49,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2021-11-25 20:11:49,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1362. [2021-11-25 20:11:49,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 861 states have (on average 1.859465737514518) internal successors, (1601), 1353 states have internal predecessors, (1601), 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) [2021-11-25 20:11:49,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 1633 transitions. [2021-11-25 20:11:49,878 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 1633 transitions. Word has length 50 [2021-11-25 20:11:49,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:11:49,879 INFO L470 AbstractCegarLoop]: Abstraction has 1362 states and 1633 transitions. [2021-11-25 20:11:49,879 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) [2021-11-25 20:11:49,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 1633 transitions. [2021-11-25 20:11:49,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-25 20:11:49,880 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:11:49,881 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] [2021-11-25 20:11:49,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-25 20:11:50,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:11:50,097 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-25 20:11:50,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:11:50,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1009990608, now seen corresponding path program 1 times [2021-11-25 20:11:50,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:11:50,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1772683894] [2021-11-25 20:11:50,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:11:50,100 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:11:50,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:11:50,101 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:11:50,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-25 20:11:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:11:50,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 20:11:50,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:11:50,474 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 [2021-11-25 20:11:50,482 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 [2021-11-25 20:11:51,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:11:51,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-25 20:11:51,101 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 20:11:51,101 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 17 treesize of output 17 [2021-11-25 20:11:51,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:11:51,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:11:51,121 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:11:51,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1772683894] [2021-11-25 20:11:51,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1772683894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:11:51,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:11:51,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:11:51,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858560497] [2021-11-25 20:11:51,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:11:51,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:11:51,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:11:51,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:11:51,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:11:51,123 INFO L87 Difference]: Start difference. First operand 1362 states and 1633 transitions. Second operand has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 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) [2021-11-25 20:11:53,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:11:53,468 INFO L93 Difference]: Finished difference Result 1331 states and 1556 transitions. [2021-11-25 20:11:53,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:11:53,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 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 [2021-11-25 20:11:53,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:11:53,475 INFO L225 Difference]: With dead ends: 1331 [2021-11-25 20:11:53,475 INFO L226 Difference]: Without dead ends: 1331 [2021-11-25 20:11:53,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:11:53,476 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 2001 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2007 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:11:53,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2007 Valid, 477 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-25 20:11:53,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2021-11-25 20:11:53,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1112. [2021-11-25 20:11:53,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 695 states have (on average 1.7266187050359711) internal successors, (1200), 1103 states have internal predecessors, (1200), 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) [2021-11-25 20:11:53,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1232 transitions. [2021-11-25 20:11:53,505 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1232 transitions. Word has length 53 [2021-11-25 20:11:53,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:11:53,505 INFO L470 AbstractCegarLoop]: Abstraction has 1112 states and 1232 transitions. [2021-11-25 20:11:53,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 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) [2021-11-25 20:11:53,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1232 transitions. [2021-11-25 20:11:53,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-25 20:11:53,507 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:11:53,507 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] [2021-11-25 20:11:53,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-25 20:11:53,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:11:53,732 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-25 20:11:53,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:11:53,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678057, now seen corresponding path program 1 times [2021-11-25 20:11:53,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:11:53,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633015121] [2021-11-25 20:11:53,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:11:53,734 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:11:53,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:11:53,735 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:11:53,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-25 20:11:54,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:11:54,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 20:11:54,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:11:54,126 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 [2021-11-25 20:11:54,145 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 [2021-11-25 20:11:54,184 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 27 treesize of output 15 [2021-11-25 20:11:54,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:11:54,198 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:11:54,198 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:11:54,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633015121] [2021-11-25 20:11:54,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633015121] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:11:54,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:11:54,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:11:54,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240144497] [2021-11-25 20:11:54,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:11:54,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:11:54,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:11:54,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:11:54,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:11:54,201 INFO L87 Difference]: Start difference. First operand 1112 states and 1232 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) [2021-11-25 20:11:57,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:11:57,518 INFO L93 Difference]: Finished difference Result 1111 states and 1231 transitions. [2021-11-25 20:11:57,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:11:57,520 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 [2021-11-25 20:11:57,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:11:57,524 INFO L225 Difference]: With dead ends: 1111 [2021-11-25 20:11:57,525 INFO L226 Difference]: Without dead ends: 1111 [2021-11-25 20:11:57,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:11:57,526 INFO L933 BasicCegarLoop]: 1046 mSDtfsCounter, 4 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2649 SdHoareTripleChecker+Invalid, 1541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:11:57,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2649 Invalid, 1541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-25 20:11:57,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2021-11-25 20:11:57,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1111. [2021-11-25 20:11:57,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 695 states have (on average 1.725179856115108) internal successors, (1199), 1102 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) [2021-11-25 20:11:57,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1231 transitions. [2021-11-25 20:11:57,552 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1231 transitions. Word has length 58 [2021-11-25 20:11:57,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:11:57,552 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 1231 transitions. [2021-11-25 20:11:57,552 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) [2021-11-25 20:11:57,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1231 transitions. [2021-11-25 20:11:57,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-25 20:11:57,553 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:11:57,554 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] [2021-11-25 20:11:57,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-25 20:11:57,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:11:57,767 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-25 20:11:57,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:11:57,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678056, now seen corresponding path program 1 times [2021-11-25 20:11:57,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:11:57,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904131689] [2021-11-25 20:11:57,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:11:57,769 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:11:57,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:11:57,769 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:11:57,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-25 20:11:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:11:58,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 20:11:58,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:11:58,101 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 [2021-11-25 20:11:58,126 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 [2021-11-25 20:11:58,136 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 [2021-11-25 20:11:58,196 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 21 treesize of output 9 [2021-11-25 20:11:58,201 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 19 treesize of output 7 [2021-11-25 20:11:58,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:11:58,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:11:58,223 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:11:58,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [904131689] [2021-11-25 20:11:58,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [904131689] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:11:58,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:11:58,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:11:58,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547532223] [2021-11-25 20:11:58,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:11:58,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:11:58,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:11:58,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:11:58,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:11:58,225 INFO L87 Difference]: Start difference. First operand 1111 states and 1231 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) [2021-11-25 20:12:01,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:12:01,776 INFO L93 Difference]: Finished difference Result 1110 states and 1230 transitions. [2021-11-25 20:12:01,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:12:01,776 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 [2021-11-25 20:12:01,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:12:01,781 INFO L225 Difference]: With dead ends: 1110 [2021-11-25 20:12:01,781 INFO L226 Difference]: Without dead ends: 1110 [2021-11-25 20:12:01,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:12:01,782 INFO L933 BasicCegarLoop]: 1046 mSDtfsCounter, 2 mSDsluCounter, 1626 mSDsCounter, 0 mSdLazyCounter, 1515 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2672 SdHoareTripleChecker+Invalid, 1516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:12:01,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2672 Invalid, 1516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1515 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-25 20:12:01,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2021-11-25 20:12:01,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1110. [2021-11-25 20:12:01,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 694 states have (on average 1.7262247838616716) internal successors, (1198), 1101 states have internal predecessors, (1198), 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) [2021-11-25 20:12:01,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1230 transitions. [2021-11-25 20:12:01,809 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1230 transitions. Word has length 58 [2021-11-25 20:12:01,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:12:01,810 INFO L470 AbstractCegarLoop]: Abstraction has 1110 states and 1230 transitions. [2021-11-25 20:12:01,810 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) [2021-11-25 20:12:01,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1230 transitions. [2021-11-25 20:12:01,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-25 20:12:01,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:12:01,811 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] [2021-11-25 20:12:01,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-25 20:12:02,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:12:02,025 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-25 20:12:02,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:12:02,025 INFO L85 PathProgramCache]: Analyzing trace with hash 2041767774, now seen corresponding path program 1 times [2021-11-25 20:12:02,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:12:02,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1371119021] [2021-11-25 20:12:02,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:12:02,026 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:12:02,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:12:02,027 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:12:02,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-25 20:12:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:12:02,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:12:02,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:12:02,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:12:02,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:12:02,448 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:12:02,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1371119021] [2021-11-25 20:12:02,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1371119021] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:12:02,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:12:02,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:12:02,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942588888] [2021-11-25 20:12:02,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:12:02,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:12:02,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:12:02,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:12:02,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:12:02,451 INFO L87 Difference]: Start difference. First operand 1110 states and 1230 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 20:12:02,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:12:02,521 INFO L93 Difference]: Finished difference Result 1113 states and 1235 transitions. [2021-11-25 20:12:02,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:12:02,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2021-11-25 20:12:02,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:12:02,529 INFO L225 Difference]: With dead ends: 1113 [2021-11-25 20:12:02,530 INFO L226 Difference]: Without dead ends: 1113 [2021-11-25 20:12:02,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:12:02,531 INFO L933 BasicCegarLoop]: 1045 mSDtfsCounter, 2 mSDsluCounter, 2082 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3127 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:12:02,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 3127 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:12:02,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2021-11-25 20:12:02,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 1113. [2021-11-25 20:12:02,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 696 states have (on average 1.7255747126436782) internal successors, (1201), 1104 states have internal predecessors, (1201), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2021-11-25 20:12:02,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1235 transitions. [2021-11-25 20:12:02,556 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1235 transitions. Word has length 66 [2021-11-25 20:12:02,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:12:02,557 INFO L470 AbstractCegarLoop]: Abstraction has 1113 states and 1235 transitions. [2021-11-25 20:12:02,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 20:12:02,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1235 transitions. [2021-11-25 20:12:02,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-25 20:12:02,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:12:02,558 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, 1] [2021-11-25 20:12:02,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-25 20:12:02,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:12:02,767 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-25 20:12:02,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:12:02,768 INFO L85 PathProgramCache]: Analyzing trace with hash -326306715, now seen corresponding path program 1 times [2021-11-25 20:12:02,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:12:02,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [487441622] [2021-11-25 20:12:02,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:12:02,769 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:12:02,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:12:02,770 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:12:02,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-25 20:12:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:12:03,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:12:03,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:12:03,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:12:03,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:12:03,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:12:03,359 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:12:03,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [487441622] [2021-11-25 20:12:03,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [487441622] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:12:03,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1468711283] [2021-11-25 20:12:03,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:12:03,360 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 20:12:03,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 20:12:03,367 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 20:12:03,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-25 20:12:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:12:03,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:12:03,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:12:03,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:12:03,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:12:04,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:12:04,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1468711283] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:12:04,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017979024] [2021-11-25 20:12:04,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:12:04,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:12:04,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:12:04,003 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:12:04,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-25 20:12:04,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:12:04,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:12:04,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:12:04,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:12:04,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:12:04,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:12:04,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017979024] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:12:04,465 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 20:12:04,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-11-25 20:12:04,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712157980] [2021-11-25 20:12:04,466 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 20:12:04,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:12:04,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:12:04,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:12:04,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:12:04,467 INFO L87 Difference]: Start difference. First operand 1113 states and 1235 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 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) [2021-11-25 20:12:04,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:12:04,649 INFO L93 Difference]: Finished difference Result 1125 states and 1253 transitions. [2021-11-25 20:12:04,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 20:12:04,650 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 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 67 [2021-11-25 20:12:04,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:12:04,655 INFO L225 Difference]: With dead ends: 1125 [2021-11-25 20:12:04,655 INFO L226 Difference]: Without dead ends: 1125 [2021-11-25 20:12:04,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:12:04,656 INFO L933 BasicCegarLoop]: 1045 mSDtfsCounter, 23 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3129 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:12:04,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 3129 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:12:04,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2021-11-25 20:12:04,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1123. [2021-11-25 20:12:04,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 705 states have (on average 1.724822695035461) internal successors, (1216), 1113 states have internal predecessors, (1216), 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) [2021-11-25 20:12:04,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1250 transitions. [2021-11-25 20:12:04,692 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1250 transitions. Word has length 67 [2021-11-25 20:12:04,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:12:04,692 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 1250 transitions. [2021-11-25 20:12:04,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 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) [2021-11-25 20:12:04,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1250 transitions. [2021-11-25 20:12:04,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-25 20:12:04,694 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:12:04,694 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:12:04,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-25 20:12:04,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-25 20:12:05,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-25 20:12:05,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 20:12:05,308 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-25 20:12:05,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:12:05,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1716613406, now seen corresponding path program 2 times [2021-11-25 20:12:05,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:12:05,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [272886563] [2021-11-25 20:12:05,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 20:12:05,309 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:12:05,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:12:05,310 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:12:05,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-25 20:12:05,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 20:12:05,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:12:05,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 20:12:05,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:12:05,840 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:12:05,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:12:06,119 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:12:06,119 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:12:06,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [272886563] [2021-11-25 20:12:06,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [272886563] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:12:06,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [239614711] [2021-11-25 20:12:06,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 20:12:06,120 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 20:12:06,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 20:12:06,121 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 20:12:06,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-25 20:12:07,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 20:12:07,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:12:07,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 20:12:07,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:12:07,310 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:12:07,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:12:07,470 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:12:07,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [239614711] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:12:07,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700039194] [2021-11-25 20:12:07,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 20:12:07,471 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:12:07,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:12:07,473 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:12:07,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-25 20:12:17,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 20:12:17,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:12:17,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 20:12:17,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:12:17,762 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:12:17,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:12:18,103 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:12:18,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700039194] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:12:18,104 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 20:12:18,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2021-11-25 20:12:18,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635245685] [2021-11-25 20:12:18,104 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 20:12:18,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-25 20:12:18,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:12:18,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-25 20:12:18,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2021-11-25 20:12:18,106 INFO L87 Difference]: Start difference. First operand 1123 states and 1250 transitions. Second operand has 20 states, 20 states have (on average 4.15) internal successors, (83), 20 states have internal predecessors, (83), 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) [2021-11-25 20:12:19,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:12:19,063 INFO L93 Difference]: Finished difference Result 1144 states and 1280 transitions. [2021-11-25 20:12:19,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 20:12:19,064 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.15) internal successors, (83), 20 states have internal predecessors, (83), 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 70 [2021-11-25 20:12:19,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:12:19,070 INFO L225 Difference]: With dead ends: 1144 [2021-11-25 20:12:19,071 INFO L226 Difference]: Without dead ends: 1138 [2021-11-25 20:12:19,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=416, Invalid=774, Unknown=0, NotChecked=0, Total=1190 [2021-11-25 20:12:19,072 INFO L933 BasicCegarLoop]: 1046 mSDtfsCounter, 63 mSDsluCounter, 8314 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 9360 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:12:19,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 9360 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 20:12:19,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2021-11-25 20:12:19,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1132. [2021-11-25 20:12:19,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1132 states, 714 states have (on average 1.718487394957983) internal successors, (1227), 1122 states have internal predecessors, (1227), 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) [2021-11-25 20:12:19,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1261 transitions. [2021-11-25 20:12:19,098 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1261 transitions. Word has length 70 [2021-11-25 20:12:19,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:12:19,098 INFO L470 AbstractCegarLoop]: Abstraction has 1132 states and 1261 transitions. [2021-11-25 20:12:19,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.15) internal successors, (83), 20 states have internal predecessors, (83), 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) [2021-11-25 20:12:19,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1261 transitions. [2021-11-25 20:12:19,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-25 20:12:19,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:12:19,100 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:12:19,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-25 20:12:19,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-25 20:12:19,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-11-25 20:12:19,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:12:19,714 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-25 20:12:19,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:12:19,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1956109246, now seen corresponding path program 3 times [2021-11-25 20:12:19,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:12:19,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219504119] [2021-11-25 20:12:19,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:12:19,715 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:12:19,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:12:19,716 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:12:19,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-25 20:12:20,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-25 20:12:20,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:12:20,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-25 20:12:20,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:12:20,560 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:12:20,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:12:21,380 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:12:21,381 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:12:21,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1219504119] [2021-11-25 20:12:21,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1219504119] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:12:21,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1538125157] [2021-11-25 20:12:21,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:12:21,381 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 20:12:21,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 20:12:21,382 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 20:12:21,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-25 20:12:24,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-25 20:12:24,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:12:24,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-25 20:12:24,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:12:25,089 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:12:25,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:12:25,430 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:12:25,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1538125157] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:12:25,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769387552] [2021-11-25 20:12:25,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:12:25,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:12:25,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:12:25,436 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:12:25,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eafc45af-ce9c-4c31-a906-7617d485cefc/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process