./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs --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 b2e8cde882f52cb03ff4f3b61f5f3fe313955f91 ............................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs --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 b2e8cde882f52cb03ff4f3b61f5f3fe313955f91 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:01:23,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:01:23,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:01:23,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:01:23,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:01:23,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:01:23,974 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:01:23,976 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:01:23,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:01:23,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:01:23,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:01:23,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:01:23,984 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:01:23,985 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:01:23,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:01:23,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:01:23,990 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:01:23,991 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:01:23,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:01:23,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:01:23,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:01:23,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:01:24,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:01:24,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:01:24,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:01:24,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:01:24,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:01:24,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:01:24,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:01:24,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:01:24,010 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:01:24,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:01:24,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:01:24,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:01:24,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:01:24,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:01:24,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:01:24,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:01:24,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:01:24,024 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:01:24,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:01:24,026 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-16 02:01:24,059 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:01:24,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:01:24,063 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:01:24,064 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:01:24,064 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:01:24,064 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:01:24,064 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:01:24,065 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:01:24,065 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:01:24,065 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:01:24,066 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:01:24,066 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:01:24,066 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:01:24,067 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:01:24,067 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:01:24,068 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-16 02:01:24,068 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-16 02:01:24,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:01:24,068 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:01:24,069 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-16 02:01:24,069 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:01:24,069 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:01:24,069 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:01:24,069 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-16 02:01:24,070 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-16 02:01:24,070 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-16 02:01:24,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:01:24,070 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:01:24,071 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:01:24,071 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:01:24,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:01:24,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:01:24,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:01:24,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:01:24,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:01:24,072 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:01:24,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:01:24,073 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:01:24,073 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:01:24,073 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_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2e8cde882f52cb03ff4f3b61f5f3fe313955f91 [2021-10-16 02:01:24,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:01:24,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:01:24,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:01:24,331 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:01:24,331 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:01:24,332 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i [2021-10-16 02:01:24,403 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/data/b44960e52/7aeddc81c7a9479e9e7a7e5bed3eb274/FLAG77eced361 [2021-10-16 02:01:25,035 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:01:25,036 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i [2021-10-16 02:01:25,056 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/data/b44960e52/7aeddc81c7a9479e9e7a7e5bed3eb274/FLAG77eced361 [2021-10-16 02:01:25,306 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/data/b44960e52/7aeddc81c7a9479e9e7a7e5bed3eb274 [2021-10-16 02:01:25,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:01:25,309 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:01:25,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:01:25,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:01:25,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:01:25,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:01:25" (1/1) ... [2021-10-16 02:01:25,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51868d24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:01:25, skipping insertion in model container [2021-10-16 02:01:25,321 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:01:25" (1/1) ... [2021-10-16 02:01:25,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:01:25,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:01:25,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:01:25,729 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) [2021-10-16 02:01:25,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@dbf73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:01:25, skipping insertion in model container [2021-10-16 02:01:25,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:01:25,730 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-16 02:01:25,733 INFO L168 Benchmark]: Toolchain (without parser) took 421.64 ms. Allocated memory is still 96.5 MB. Free memory was 64.8 MB in the beginning and 51.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:01:25,734 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 96.5 MB. Free memory is still 66.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:01:25,735 INFO L168 Benchmark]: CACSL2BoogieTranslator took 417.47 ms. Allocated memory is still 96.5 MB. Free memory was 64.6 MB in the beginning and 51.7 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:01:25,738 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 96.5 MB. Free memory is still 66.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 417.47 ms. Allocated memory is still 96.5 MB. Free memory was 64.6 MB in the beginning and 51.7 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:01:28,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:01:28,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:01:28,102 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:01:28,102 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:01:28,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:01:28,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:01:28,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:01:28,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:01:28,124 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:01:28,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:01:28,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:01:28,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:01:28,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:01:28,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:01:28,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:01:28,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:01:28,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:01:28,146 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:01:28,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:01:28,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:01:28,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:01:28,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:01:28,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:01:28,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:01:28,178 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:01:28,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:01:28,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:01:28,182 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:01:28,183 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:01:28,184 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:01:28,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:01:28,187 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:01:28,189 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:01:28,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:01:28,191 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:01:28,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:01:28,192 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:01:28,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:01:28,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:01:28,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:01:28,197 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-16 02:01:28,244 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:01:28,245 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:01:28,246 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:01:28,246 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:01:28,246 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:01:28,247 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:01:28,247 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:01:28,247 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:01:28,247 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:01:28,249 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-16 02:01:28,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-16 02:01:28,250 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:01:28,250 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:01:28,251 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-16 02:01:28,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:01:28,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:01:28,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:01:28,252 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-16 02:01:28,252 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-16 02:01:28,252 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-16 02:01:28,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:01:28,253 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:01:28,253 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:01:28,253 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:01:28,254 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:01:28,254 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:01:28,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:01:28,254 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:01:28,254 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:01:28,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:01:28,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:01:28,255 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:01:28,256 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:01:28,256 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:01:28,256 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:01:28,257 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:01:28,257 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_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2e8cde882f52cb03ff4f3b61f5f3fe313955f91 [2021-10-16 02:01:28,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:01:28,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:01:28,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:01:28,651 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:01:28,652 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:01:28,653 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i [2021-10-16 02:01:28,728 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/data/d3141f9ad/25be5b4f876c422a8d80a9a650eefee4/FLAGb3101b611 [2021-10-16 02:01:29,364 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:01:29,364 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i [2021-10-16 02:01:29,382 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/data/d3141f9ad/25be5b4f876c422a8d80a9a650eefee4/FLAGb3101b611 [2021-10-16 02:01:29,687 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/data/d3141f9ad/25be5b4f876c422a8d80a9a650eefee4 [2021-10-16 02:01:29,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:01:29,700 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:01:29,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:01:29,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:01:29,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:01:29,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:01:29" (1/1) ... [2021-10-16 02:01:29,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d3fd0be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:01:29, skipping insertion in model container [2021-10-16 02:01:29,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:01:29" (1/1) ... [2021-10-16 02:01:29,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:01:29,757 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:01:30,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:01:30,169 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-16 02:01:30,189 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:01:30,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:01:30,270 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:01:30,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:01:30,381 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:01:30,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:01:30 WrapperNode [2021-10-16 02:01:30,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:01:30,382 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:01:30,383 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:01:30,383 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:01:30,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:01:30" (1/1) ... [2021-10-16 02:01:30,427 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:01:30" (1/1) ... [2021-10-16 02:01:30,462 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:01:30,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:01:30,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:01:30,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:01:30,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:01:30" (1/1) ... [2021-10-16 02:01:30,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:01:30" (1/1) ... [2021-10-16 02:01:30,491 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:01:30" (1/1) ... [2021-10-16 02:01:30,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:01:30" (1/1) ... [2021-10-16 02:01:30,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:01:30" (1/1) ... [2021-10-16 02:01:30,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:01:30" (1/1) ... [2021-10-16 02:01:30,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:01:30" (1/1) ... [2021-10-16 02:01:30,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:01:30,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:01:30,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:01:30,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:01:30,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:01:30" (1/1) ... [2021-10-16 02:01:30,536 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:01:30,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:01:30,569 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:01:30,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:01:30,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 02:01:30,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 02:01:30,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:01:30,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 02:01:30,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-16 02:01:30,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:01:30,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:01:31,045 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:01:31,046 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-16 02:01:31,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:01:31 BoogieIcfgContainer [2021-10-16 02:01:31,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:01:31,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:01:31,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:01:31,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:01:31,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:01:29" (1/3) ... [2021-10-16 02:01:31,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35cabed4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:01:31, skipping insertion in model container [2021-10-16 02:01:31,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:01:30" (2/3) ... [2021-10-16 02:01:31,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35cabed4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:01:31, skipping insertion in model container [2021-10-16 02:01:31,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:01:31" (3/3) ... [2021-10-16 02:01:31,061 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test13_1.i [2021-10-16 02:01:31,073 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:01:31,074 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2021-10-16 02:01:31,116 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:01:31,122 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, mConcurrency=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 [2021-10-16 02:01:31,123 INFO L340 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2021-10-16 02:01:31,137 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 17 states have (on average 2.0) internal successors, (34), 32 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:01:31,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 02:01:31,157 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:01:31,158 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 02:01:31,158 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-10-16 02:01:31,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:01:31,164 INFO L82 PathProgramCache]: Analyzing trace with hash 889508713, now seen corresponding path program 1 times [2021-10-16 02:01:31,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:01:31,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643171106] [2021-10-16 02:01:31,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:01:31,177 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:01:31,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:01:31,180 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:01:31,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:01:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:01:31,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:01:31,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:01:31,384 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-16 02:01:31,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-16 02:01:31,492 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-16 02:01:31,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 20 [2021-10-16 02:01:31,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:01:31,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:01:31,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:01:31,583 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:01:31,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [643171106] [2021-10-16 02:01:31,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [643171106] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:01:31,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:01:31,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:01:31,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394873635] [2021-10-16 02:01:31,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:01:31,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:01:31,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:01:31,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:01:31,607 INFO L87 Difference]: Start difference. First operand has 33 states, 17 states have (on average 2.0) internal successors, (34), 32 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 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) [2021-10-16 02:01:31,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:01:31,750 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2021-10-16 02:01:31,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:01:31,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 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 [2021-10-16 02:01:31,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:01:31,760 INFO L225 Difference]: With dead ends: 43 [2021-10-16 02:01:31,760 INFO L226 Difference]: Without dead ends: 39 [2021-10-16 02:01:31,762 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 4 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:01:31,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-16 02:01:31,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30. [2021-10-16 02:01:31,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 16 states have (on average 1.9375) internal successors, (31), 29 states have internal predecessors, (31), 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) [2021-10-16 02:01:31,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-10-16 02:01:31,792 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 6 [2021-10-16 02:01:31,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:01:31,794 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-10-16 02:01:31,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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) [2021-10-16 02:01:31,795 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2021-10-16 02:01:31,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 02:01:31,795 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:01:31,796 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 02:01:31,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:01:32,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:01:32,010 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-10-16 02:01:32,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:01:32,011 INFO L82 PathProgramCache]: Analyzing trace with hash 889508714, now seen corresponding path program 1 times [2021-10-16 02:01:32,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:01:32,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709310289] [2021-10-16 02:01:32,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:01:32,012 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:01:32,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:01:32,013 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:01:32,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:01:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:01:32,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:01:32,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:01:32,159 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-16 02:01:32,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 35 [2021-10-16 02:01:32,179 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-16 02:01:32,179 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 1 case distinctions, treesize of input 35 treesize of output 36 [2021-10-16 02:01:32,508 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-10-16 02:01:32,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 56 [2021-10-16 02:01:32,569 INFO L354 Elim1Store]: treesize reduction 18, result has 63.3 percent of original size [2021-10-16 02:01:32,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 67 [2021-10-16 02:01:32,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:01:32,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:01:35,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:01:35,155 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:01:35,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709310289] [2021-10-16 02:01:35,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1709310289] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:01:35,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:01:35,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-16 02:01:35,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053726049] [2021-10-16 02:01:35,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:01:35,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:01:35,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:01:35,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=37, Unknown=1, NotChecked=0, Total=56 [2021-10-16 02:01:35,159 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:01:35,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:01:35,432 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2021-10-16 02:01:35,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:01:35,433 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-16 02:01:35,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:01:35,434 INFO L225 Difference]: With dead ends: 38 [2021-10-16 02:01:35,434 INFO L226 Difference]: Without dead ends: 38 [2021-10-16 02:01:35,435 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2245.3ms TimeCoverageRelationStatistics Valid=26, Invalid=45, Unknown=1, NotChecked=0, Total=72 [2021-10-16 02:01:35,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-16 02:01:35,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 29. [2021-10-16 02:01:35,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 16 states have (on average 1.875) internal successors, (30), 28 states have internal predecessors, (30), 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) [2021-10-16 02:01:35,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-10-16 02:01:35,439 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 6 [2021-10-16 02:01:35,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:01:35,440 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-10-16 02:01:35,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:01:35,440 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-10-16 02:01:35,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 02:01:35,441 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:01:35,441 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:01:35,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:01:35,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:01:35,652 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-10-16 02:01:35,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:01:35,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1804987196, now seen corresponding path program 1 times [2021-10-16 02:01:35,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:01:35,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565442937] [2021-10-16 02:01:35,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:01:35,654 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:01:35,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:01:35,655 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:01:35,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:01:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:01:35,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:01:35,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:01:35,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:01:35,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:01:35,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:01:35,788 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:01:35,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565442937] [2021-10-16 02:01:35,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565442937] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:01:35,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:01:35,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-16 02:01:35,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430368052] [2021-10-16 02:01:35,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:01:35,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:01:35,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:01:35,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:01:35,791 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:01:35,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:01:35,821 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2021-10-16 02:01:35,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:01:35,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-16 02:01:35,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:01:35,823 INFO L225 Difference]: With dead ends: 55 [2021-10-16 02:01:35,823 INFO L226 Difference]: Without dead ends: 55 [2021-10-16 02:01:35,824 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:01:35,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-16 02:01:35,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 31. [2021-10-16 02:01:35,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 30 states have internal predecessors, (32), 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) [2021-10-16 02:01:35,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2021-10-16 02:01:35,828 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 7 [2021-10-16 02:01:35,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:01:35,829 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2021-10-16 02:01:35,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:01:35,829 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2021-10-16 02:01:35,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 02:01:35,830 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:01:35,830 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:01:35,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:01:36,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:01:36,041 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-10-16 02:01:36,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:01:36,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1806834238, now seen corresponding path program 1 times [2021-10-16 02:01:36,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:01:36,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [261368003] [2021-10-16 02:01:36,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:01:36,043 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:01:36,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:01:36,045 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:01:36,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:01:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:01:36,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:01:36,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:01:36,190 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-16 02:01:36,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-16 02:01:36,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:01:36,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:01:36,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:01:36,313 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:01:36,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [261368003] [2021-10-16 02:01:36,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [261368003] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:01:36,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:01:36,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:01:36,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402308069] [2021-10-16 02:01:36,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:01:36,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:01:36,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:01:36,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:01:36,316 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:01:36,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:01:36,425 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2021-10-16 02:01:36,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:01:36,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-16 02:01:36,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:01:36,427 INFO L225 Difference]: With dead ends: 29 [2021-10-16 02:01:36,427 INFO L226 Difference]: Without dead ends: 29 [2021-10-16 02:01:36,428 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:01:36,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-16 02:01:36,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-16 02:01:36,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 28 states have internal predecessors, (30), 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) [2021-10-16 02:01:36,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-10-16 02:01:36,431 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 7 [2021-10-16 02:01:36,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:01:36,431 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-10-16 02:01:36,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:01:36,432 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-10-16 02:01:36,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 02:01:36,432 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:01:36,432 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:01:36,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:01:36,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:01:36,633 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-10-16 02:01:36,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:01:36,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1806834239, now seen corresponding path program 1 times [2021-10-16 02:01:36,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:01:36,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025015988] [2021-10-16 02:01:36,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:01:36,634 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:01:36,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:01:36,639 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:01:36,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:01:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:01:36,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:01:36,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:01:36,751 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-16 02:01:36,751 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 1 case distinctions, treesize of input 9 treesize of output 11 [2021-10-16 02:01:36,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:01:36,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:01:37,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:01:37,027 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:01:37,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1025015988] [2021-10-16 02:01:37,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1025015988] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:01:37,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:01:37,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-16 02:01:37,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559056616] [2021-10-16 02:01:37,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:01:37,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:01:37,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:01:37,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:01:37,029 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-10-16 02:01:37,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:01:37,426 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2021-10-16 02:01:37,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:01:37,427 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-16 02:01:37,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:01:37,428 INFO L225 Difference]: With dead ends: 49 [2021-10-16 02:01:37,428 INFO L226 Difference]: Without dead ends: 49 [2021-10-16 02:01:37,429 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 113.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:01:37,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-16 02:01:37,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 39. [2021-10-16 02:01:37,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 38 states have internal predecessors, (48), 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) [2021-10-16 02:01:37,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2021-10-16 02:01:37,434 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 7 [2021-10-16 02:01:37,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:01:37,434 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2021-10-16 02:01:37,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-10-16 02:01:37,434 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2021-10-16 02:01:37,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:01:37,435 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:01:37,435 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:01:37,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:01:37,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:01:37,647 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-10-16 02:01:37,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:01:37,648 INFO L82 PathProgramCache]: Analyzing trace with hash 119380842, now seen corresponding path program 1 times [2021-10-16 02:01:37,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:01:37,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [849156513] [2021-10-16 02:01:37,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:01:37,649 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:01:37,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:01:37,650 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:01:37,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:01:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:01:37,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:01:37,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:01:37,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2021-10-16 02:01:37,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:01:37,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:01:37,903 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-10-16 02:01:37,903 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 29 treesize of output 28 [2021-10-16 02:01:37,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:01:37,931 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:01:37,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [849156513] [2021-10-16 02:01:37,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [849156513] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:01:37,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:01:37,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-16 02:01:37,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977631905] [2021-10-16 02:01:37,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:01:37,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:01:37,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:01:37,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:01:37,933 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:01:38,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:01:38,182 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2021-10-16 02:01:38,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:01:38,184 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-16 02:01:38,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:01:38,185 INFO L225 Difference]: With dead ends: 43 [2021-10-16 02:01:38,185 INFO L226 Difference]: Without dead ends: 43 [2021-10-16 02:01:38,185 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 115.7ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:01:38,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-16 02:01:38,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2021-10-16 02:01:38,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 37 states have internal predecessors, (46), 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) [2021-10-16 02:01:38,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2021-10-16 02:01:38,190 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 8 [2021-10-16 02:01:38,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:01:38,190 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2021-10-16 02:01:38,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:01:38,191 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2021-10-16 02:01:38,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:01:38,191 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:01:38,191 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:01:38,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:01:38,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:01:38,392 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-10-16 02:01:38,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:01:38,393 INFO L82 PathProgramCache]: Analyzing trace with hash 119380843, now seen corresponding path program 1 times [2021-10-16 02:01:38,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:01:38,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [161677148] [2021-10-16 02:01:38,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:01:38,394 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:01:38,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:01:38,395 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:01:38,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 02:01:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:01:38,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-16 02:01:38,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:01:38,583 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-16 02:01:38,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 35 [2021-10-16 02:01:38,607 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-16 02:01:38,608 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 1 case distinctions, treesize of input 35 treesize of output 36 [2021-10-16 02:01:38,901 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-10-16 02:01:38,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2021-10-16 02:01:38,960 INFO L354 Elim1Store]: treesize reduction 18, result has 63.3 percent of original size [2021-10-16 02:01:38,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 68 [2021-10-16 02:01:39,384 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 34 treesize of output 26 [2021-10-16 02:01:39,388 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 23 treesize of output 15 [2021-10-16 02:01:39,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:01:39,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:01:42,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:01:42,115 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:01:42,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [161677148] [2021-10-16 02:01:42,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [161677148] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:01:42,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:01:42,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-16 02:01:42,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335634692] [2021-10-16 02:01:42,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-16 02:01:42,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:01:42,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-16 02:01:42,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=103, Unknown=1, NotChecked=0, Total=132 [2021-10-16 02:01:42,117 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:01:45,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:01:45,170 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2021-10-16 02:01:45,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-16 02:01:45,172 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-16 02:01:45,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:01:45,172 INFO L225 Difference]: With dead ends: 42 [2021-10-16 02:01:45,173 INFO L226 Difference]: Without dead ends: 42 [2021-10-16 02:01:45,173 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 5013.2ms TimeCoverageRelationStatistics Valid=86, Invalid=218, Unknown=2, NotChecked=0, Total=306 [2021-10-16 02:01:45,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-16 02:01:45,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2021-10-16 02:01:45,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 36 states have internal predecessors, (44), 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) [2021-10-16 02:01:45,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2021-10-16 02:01:45,177 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 8 [2021-10-16 02:01:45,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:01:45,177 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2021-10-16 02:01:45,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:01:45,178 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2021-10-16 02:01:45,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 02:01:45,178 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:01:45,179 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:01:45,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-16 02:01:45,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:01:45,385 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-10-16 02:01:45,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:01:45,385 INFO L82 PathProgramCache]: Analyzing trace with hash -594161204, now seen corresponding path program 1 times [2021-10-16 02:01:45,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:01:45,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426382593] [2021-10-16 02:01:45,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:01:45,386 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:01:45,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:01:45,387 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:01:45,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 02:01:45,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:01:45,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:01:45,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:01:45,542 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 [2021-10-16 02:01:45,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:01:45,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:01:45,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:01:45,664 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:01:45,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426382593] [2021-10-16 02:01:45,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426382593] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:01:45,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:01:45,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-16 02:01:45,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826520576] [2021-10-16 02:01:45,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:01:45,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:01:45,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:01:45,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:01:45,666 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 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) [2021-10-16 02:01:45,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:01:45,957 INFO L93 Difference]: Finished difference Result 47 states and 46 transitions. [2021-10-16 02:01:45,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:01:45,958 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 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 9 [2021-10-16 02:01:45,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:01:45,959 INFO L225 Difference]: With dead ends: 47 [2021-10-16 02:01:45,959 INFO L226 Difference]: Without dead ends: 47 [2021-10-16 02:01:45,959 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 91.7ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:01:45,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-16 02:01:45,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 36. [2021-10-16 02:01:45,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 35 states have internal predecessors, (41), 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) [2021-10-16 02:01:45,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2021-10-16 02:01:45,962 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 9 [2021-10-16 02:01:45,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:01:45,962 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2021-10-16 02:01:45,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 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) [2021-10-16 02:01:45,963 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2021-10-16 02:01:45,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 02:01:45,963 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:01:45,963 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:01:45,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:01:46,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:01:46,164 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-10-16 02:01:46,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:01:46,164 INFO L82 PathProgramCache]: Analyzing trace with hash -594161203, now seen corresponding path program 1 times [2021-10-16 02:01:46,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:01:46,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1207177144] [2021-10-16 02:01:46,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:01:46,165 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:01:46,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:01:46,168 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:01:46,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 02:01:46,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:01:46,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-16 02:01:46,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:01:46,343 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 [2021-10-16 02:01:46,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:01:46,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:01:46,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:01:46,807 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:01:46,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1207177144] [2021-10-16 02:01:46,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1207177144] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:01:46,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:01:46,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-16 02:01:46,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272922954] [2021-10-16 02:01:46,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-16 02:01:46,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:01:46,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-16 02:01:46,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-16 02:01:46,810 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 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) [2021-10-16 02:01:47,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:01:47,377 INFO L93 Difference]: Finished difference Result 45 states and 44 transitions. [2021-10-16 02:01:47,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:01:47,378 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 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 9 [2021-10-16 02:01:47,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:01:47,379 INFO L225 Difference]: With dead ends: 45 [2021-10-16 02:01:47,379 INFO L226 Difference]: Without dead ends: 45 [2021-10-16 02:01:47,380 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 412.8ms TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-10-16 02:01:47,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-16 02:01:47,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2021-10-16 02:01:47,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 35 states have internal predecessors, (39), 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) [2021-10-16 02:01:47,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2021-10-16 02:01:47,383 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 9 [2021-10-16 02:01:47,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:01:47,386 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2021-10-16 02:01:47,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 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) [2021-10-16 02:01:47,387 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2021-10-16 02:01:47,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 02:01:47,387 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:01:47,387 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:01:47,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:01:47,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:01:47,593 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-10-16 02:01:47,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:01:47,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1200915427, now seen corresponding path program 1 times [2021-10-16 02:01:47,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:01:47,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1632684358] [2021-10-16 02:01:47,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:01:47,594 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:01:47,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:01:47,596 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:01:47,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 02:01:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:01:47,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:01:47,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:01:47,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:01:47,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:01:47,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:01:47,782 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:01:47,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1632684358] [2021-10-16 02:01:47,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1632684358] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:01:47,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:01:47,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:01:47,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637677166] [2021-10-16 02:01:47,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:01:47,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:01:47,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:01:47,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:01:47,784 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-10-16 02:01:47,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:01:47,849 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2021-10-16 02:01:47,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:01:47,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2021-10-16 02:01:47,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:01:47,850 INFO L225 Difference]: With dead ends: 39 [2021-10-16 02:01:47,850 INFO L226 Difference]: Without dead ends: 34 [2021-10-16 02:01:47,850 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:01:47,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-16 02:01:47,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2021-10-16 02:01:47,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.375) internal successors, (33), 31 states have internal predecessors, (33), 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) [2021-10-16 02:01:47,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2021-10-16 02:01:47,853 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 9 [2021-10-16 02:01:47,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:01:47,854 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2021-10-16 02:01:47,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-10-16 02:01:47,854 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2021-10-16 02:01:47,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 02:01:47,855 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:01:47,855 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:01:47,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:01:48,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:01:48,066 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-10-16 02:01:48,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:01:48,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1180846158, now seen corresponding path program 1 times [2021-10-16 02:01:48,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:01:48,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101510306] [2021-10-16 02:01:48,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:01:48,067 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:01:48,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:01:48,068 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:01:48,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-16 02:01:48,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:01:48,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:01:48,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:01:48,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:01:48,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:01:48,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:01:48,272 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:01:48,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101510306] [2021-10-16 02:01:48,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101510306] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:01:48,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:01:48,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-16 02:01:48,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049419967] [2021-10-16 02:01:48,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:01:48,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:01:48,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:01:48,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:01:48,279 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-10-16 02:01:48,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:01:48,302 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2021-10-16 02:01:48,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:01:48,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2021-10-16 02:01:48,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:01:48,303 INFO L225 Difference]: With dead ends: 23 [2021-10-16 02:01:48,303 INFO L226 Difference]: Without dead ends: 21 [2021-10-16 02:01:48,304 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:01:48,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-16 02:01:48,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-10-16 02:01:48,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.25) internal successors, (20), 20 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:01:48,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2021-10-16 02:01:48,308 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 9 [2021-10-16 02:01:48,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:01:48,308 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2021-10-16 02:01:48,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-10-16 02:01:48,309 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2021-10-16 02:01:48,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 02:01:48,309 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:01:48,309 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:01:48,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-16 02:01:48,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:01:48,520 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-10-16 02:01:48,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:01:48,520 INFO L82 PathProgramCache]: Analyzing trace with hash 241733103, now seen corresponding path program 1 times [2021-10-16 02:01:48,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:01:48,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [826115732] [2021-10-16 02:01:48,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:01:48,521 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:01:48,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:01:48,521 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:01:48,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-16 02:01:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:01:48,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:01:48,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:01:48,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:01:48,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:01:48,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:01:48,738 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:01:48,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [826115732] [2021-10-16 02:01:48,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [826115732] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:01:48,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:01:48,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:01:48,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979013417] [2021-10-16 02:01:48,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:01:48,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:01:48,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:01:48,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:01:48,741 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:01:48,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:01:48,818 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2021-10-16 02:01:48,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:01:48,818 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-16 02:01:48,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:01:48,819 INFO L225 Difference]: With dead ends: 20 [2021-10-16 02:01:48,819 INFO L226 Difference]: Without dead ends: 20 [2021-10-16 02:01:48,819 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:01:48,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-16 02:01:48,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-16 02:01:48,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.1875) internal successors, (19), 19 states have internal predecessors, (19), 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) [2021-10-16 02:01:48,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2021-10-16 02:01:48,821 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 11 [2021-10-16 02:01:48,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:01:48,821 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2021-10-16 02:01:48,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:01:48,821 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2021-10-16 02:01:48,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 02:01:48,822 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:01:48,822 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:01:48,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-16 02:01:49,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:01:49,023 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-10-16 02:01:49,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:01:49,023 INFO L82 PathProgramCache]: Analyzing trace with hash 241733104, now seen corresponding path program 1 times [2021-10-16 02:01:49,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:01:49,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510772159] [2021-10-16 02:01:49,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:01:49,023 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:01:49,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:01:49,024 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:01:49,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-16 02:01:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:01:49,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:01:49,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:01:49,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:01:49,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:01:49,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-10-16 02:01:49,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:01:49,505 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:01:49,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510772159] [2021-10-16 02:01:49,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510772159] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:01:49,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:01:49,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-16 02:01:49,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854542521] [2021-10-16 02:01:49,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:01:49,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:01:49,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:01:49,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:01:49,507 INFO L87 Difference]: Start difference. First operand 20 states and 19 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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) [2021-10-16 02:01:49,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:01:49,624 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2021-10-16 02:01:49,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:01:49,625 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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 [2021-10-16 02:01:49,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:01:49,626 INFO L225 Difference]: With dead ends: 19 [2021-10-16 02:01:49,626 INFO L226 Difference]: Without dead ends: 19 [2021-10-16 02:01:49,626 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 188.4ms TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-10-16 02:01:49,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-16 02:01:49,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-16 02:01:49,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 16 states have (on average 1.125) internal successors, (18), 18 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:01:49,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2021-10-16 02:01:49,628 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 11 [2021-10-16 02:01:49,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:01:49,628 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2021-10-16 02:01:49,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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) [2021-10-16 02:01:49,629 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2021-10-16 02:01:49,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-16 02:01:49,630 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:01:49,630 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:01:49,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-16 02:01:49,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:01:49,832 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-10-16 02:01:49,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:01:49,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1189283757, now seen corresponding path program 1 times [2021-10-16 02:01:49,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:01:49,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020890166] [2021-10-16 02:01:49,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:01:49,833 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:01:49,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:01:49,834 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:01:49,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-16 02:01:49,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:01:49,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-16 02:01:49,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:01:50,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:01:50,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:01:50,345 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:01:50,346 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 22 treesize of output 26 [2021-10-16 02:01:50,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:01:50,560 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:01:50,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020890166] [2021-10-16 02:01:50,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020890166] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:01:50,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:01:50,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-16 02:01:50,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449117280] [2021-10-16 02:01:50,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:01:50,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:01:50,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:01:50,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:01:50,562 INFO L87 Difference]: Start difference. First operand 19 states and 18 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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) [2021-10-16 02:01:50,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:01:50,713 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2021-10-16 02:01:50,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:01:50,713 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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 14 [2021-10-16 02:01:50,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:01:50,714 INFO L225 Difference]: With dead ends: 18 [2021-10-16 02:01:50,714 INFO L226 Difference]: Without dead ends: 18 [2021-10-16 02:01:50,714 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 223.9ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-10-16 02:01:50,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-16 02:01:50,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-16 02:01:50,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.0625) internal successors, (17), 17 states have internal predecessors, (17), 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) [2021-10-16 02:01:50,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2021-10-16 02:01:50,716 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 14 [2021-10-16 02:01:50,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:01:50,717 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2021-10-16 02:01:50,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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) [2021-10-16 02:01:50,717 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2021-10-16 02:01:50,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-16 02:01:50,718 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:01:50,718 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:01:50,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-16 02:01:50,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:01:50,920 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-10-16 02:01:50,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:01:50,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1786909176, now seen corresponding path program 1 times [2021-10-16 02:01:50,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:01:50,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [89975023] [2021-10-16 02:01:50,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:01:50,921 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:01:50,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:01:50,922 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:01:50,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-16 02:01:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:01:51,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-16 02:01:51,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:01:51,212 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 15 treesize of output 7 [2021-10-16 02:01:51,221 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 15 treesize of output 7 [2021-10-16 02:01:51,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:01:51,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:01:51,634 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:01:51,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2021-10-16 02:01:52,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:01:52,078 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:01:52,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [89975023] [2021-10-16 02:01:52,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [89975023] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:01:52,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:01:52,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-10-16 02:01:52,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160494307] [2021-10-16 02:01:52,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-16 02:01:52,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:01:52,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-16 02:01:52,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-16 02:01:52,080 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 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) [2021-10-16 02:01:52,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:01:52,500 INFO L93 Difference]: Finished difference Result 17 states and 16 transitions. [2021-10-16 02:01:52,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 02:01:52,501 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 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 15 [2021-10-16 02:01:52,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:01:52,502 INFO L225 Difference]: With dead ends: 17 [2021-10-16 02:01:52,502 INFO L226 Difference]: Without dead ends: 17 [2021-10-16 02:01:52,502 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 676.6ms TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-10-16 02:01:52,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-16 02:01:52,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-16 02:01:52,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0) internal successors, (16), 16 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:01:52,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16 transitions. [2021-10-16 02:01:52,504 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 16 transitions. Word has length 15 [2021-10-16 02:01:52,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:01:52,505 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 16 transitions. [2021-10-16 02:01:52,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 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) [2021-10-16 02:01:52,505 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 16 transitions. [2021-10-16 02:01:52,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-16 02:01:52,505 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:01:52,506 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:01:52,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-16 02:01:52,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:01:52,716 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-10-16 02:01:52,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:01:52,717 INFO L82 PathProgramCache]: Analyzing trace with hash -440390409, now seen corresponding path program 1 times [2021-10-16 02:01:52,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:01:52,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123088862] [2021-10-16 02:01:52,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:01:52,718 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:01:52,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:01:52,719 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:01:52,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-16 02:01:52,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:01:52,940 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:01:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:01:53,061 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-16 02:01:53,067 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:01:53,068 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 02:01:53,076 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-16 02:01:53,077 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-16 02:01:53,077 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-16 02:01:53,077 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-16 02:01:53,077 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-16 02:01:53,077 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-16 02:01:53,078 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-16 02:01:53,078 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-16 02:01:53,078 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-16 02:01:53,078 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-16 02:01:53,078 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-16 02:01:53,079 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-16 02:01:53,079 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-16 02:01:53,079 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-16 02:01:53,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-16 02:01:53,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:01:53,301 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:01:53,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:01:53 BoogieIcfgContainer [2021-10-16 02:01:53,353 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:01:53,354 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:01:53,354 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:01:53,354 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:01:53,355 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:01:31" (3/4) ... [2021-10-16 02:01:53,357 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 02:01:53,357 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:01:53,358 INFO L168 Benchmark]: Toolchain (without parser) took 23657.32 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 40.8 MB in the beginning and 55.4 MB in the end (delta: -14.6 MB). Peak memory consumption was 720.9 kB. Max. memory is 16.1 GB. [2021-10-16 02:01:53,358 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 65.0 MB. Free memory is still 45.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:01:53,359 INFO L168 Benchmark]: CACSL2BoogieTranslator took 679.66 ms. Allocated memory is still 65.0 MB. Free memory was 40.5 MB in the beginning and 30.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:01:53,359 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.24 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 30.0 MB in the beginning and 62.4 MB in the end (delta: -32.4 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:01:53,360 INFO L168 Benchmark]: Boogie Preprocessor took 63.63 ms. Allocated memory is still 81.8 MB. Free memory was 62.4 MB in the beginning and 61.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:01:53,360 INFO L168 Benchmark]: RCFGBuilder took 520.21 ms. Allocated memory is still 81.8 MB. Free memory was 61.0 MB in the beginning and 47.6 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:01:53,360 INFO L168 Benchmark]: TraceAbstraction took 22298.92 ms. Allocated memory is still 81.8 MB. Free memory was 47.0 MB in the beginning and 55.4 MB in the end (delta: -8.4 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:01:53,361 INFO L168 Benchmark]: Witness Printer took 3.53 ms. Allocated memory is still 81.8 MB. Free memory is still 55.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:01:53,363 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 65.0 MB. Free memory is still 45.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 679.66 ms. Allocated memory is still 65.0 MB. Free memory was 40.5 MB in the beginning and 30.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 80.24 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 30.0 MB in the beginning and 62.4 MB in the end (delta: -32.4 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.63 ms. Allocated memory is still 81.8 MB. Free memory was 62.4 MB in the beginning and 61.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 520.21 ms. Allocated memory is still 81.8 MB. Free memory was 61.0 MB in the beginning and 47.6 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 22298.92 ms. Allocated memory is still 81.8 MB. Free memory was 47.0 MB in the beginning and 55.4 MB in the end (delta: -8.4 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Witness Printer took 3.53 ms. Allocated memory is still 81.8 MB. Free memory is still 55.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 772]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 772. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L757] struct ldv_list_head global_list_13 = { &(global_list_13), &(global_list_13) }; VAL [global_list_13={-1073741824:0}, ldv_global_msg_list={-2147483648:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L763] struct A13 *p = (struct A13 *)ldv_malloc(sizeof(struct A13)); [L764] COND TRUE \read(*p) [L559] head->next VAL [global_list_13={-1073741824:0}, ldv_global_msg_list={-2147483648:0}] [L547] next->prev = new VAL [global_list_13={-1073741824:0}, ldv_global_msg_list={-2147483648:0}] [L548] new->next = next VAL [global_list_13={-1073741824:0}, ldv_global_msg_list={-2147483648:0}] [L549] new->prev = prev VAL [global_list_13={-1073741824:0}, ldv_global_msg_list={-2147483648:0}] [L550] prev->next = new VAL [global_list_13={-1073741824:0}, ldv_global_msg_list={-2147483648:0}] [L540] list->next = list VAL [global_list_13={-1073741824:0}, ldv_global_msg_list={-2147483648:0}] [L541] list->prev = list VAL [global_list_13={-1073741824:0}, ldv_global_msg_list={-2147483648:0}] - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 15 error locations. Started 1 CEGAR loops. OverallTime: 22185.2ms, OverallIterations: 16, TraceHistogramMax: 1, EmptinessCheckTime: 32.5ms, AutomataDifference: 6040.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 221 SDtfs, 799 SDslu, 332 SDs, 0 SdLazy, 725 SolverSat, 64 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2340.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 279 GetRequests, 154 SyntacticMatches, 11 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 9220.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=5, InterpolantAutomatonStates: 89, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 62.3ms AutomataMinimizationTime, 15 MinimizatonAttempts, 84 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 112.8ms SsaConstructionTime, 577.3ms SatisfiabilityAnalysisTime, 10511.9ms InterpolantComputationTime, 152 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 242 ConstructedInterpolants, 8 QuantifiedInterpolants, 2398 SizeOfPredicates, 104 NumberOfNonLiveVariables, 974 ConjunctsInSsa, 129 ConjunctsInUnsatCore, 30 InterpolantComputations, 30 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-16 02:01:53,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08bfe98-02eb-4e07-a5ed-585fe6e7ac82/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...