./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-properties/list_search-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list_search-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1ea7ddff382751fa0e11562333bdb4981cac7bdbf1d356a007804e7e2e5a289 ........................................................................................................................................... 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_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list_search-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1ea7ddff382751fa0e11562333bdb4981cac7bdbf1d356a007804e7e2e5a289 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 11:02:30,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 11:02:30,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 11:02:30,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 11:02:30,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 11:02:30,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 11:02:30,487 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 11:02:30,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 11:02:30,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 11:02:30,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 11:02:30,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 11:02:30,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 11:02:30,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 11:02:30,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 11:02:30,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 11:02:30,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 11:02:30,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 11:02:30,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 11:02:30,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 11:02:30,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 11:02:30,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 11:02:30,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 11:02:30,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 11:02:30,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 11:02:30,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 11:02:30,542 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 11:02:30,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 11:02:30,544 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 11:02:30,546 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 11:02:30,547 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 11:02:30,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 11:02:30,551 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 11:02:30,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 11:02:30,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 11:02:30,555 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 11:02:30,555 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 11:02:30,555 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 11:02:30,556 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 11:02:30,556 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 11:02:30,557 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 11:02:30,558 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 11:02:30,560 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2021-10-24 11:02:30,595 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 11:02:30,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 11:02:30,596 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 11:02:30,597 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 11:02:30,597 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 11:02:30,597 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 11:02:30,598 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 11:02:30,598 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 11:02:30,598 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 11:02:30,598 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 11:02:30,599 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 11:02:30,599 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 11:02:30,599 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 11:02:30,600 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 11:02:30,600 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 11:02:30,601 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-24 11:02:30,601 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-24 11:02:30,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 11:02:30,602 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 11:02:30,602 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 11:02:30,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 11:02:30,603 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 11:02:30,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 11:02:30,603 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-24 11:02:30,603 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-24 11:02:30,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 11:02:30,604 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 11:02:30,604 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 11:02:30,605 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 11:02:30,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 11:02:30,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 11:02:30,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:02:30,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 11:02:30,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 11:02:30,606 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 11:02:30,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 11:02:30,607 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 11:02:30,607 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 11:02:30,607 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_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1ea7ddff382751fa0e11562333bdb4981cac7bdbf1d356a007804e7e2e5a289 [2021-10-24 11:02:30,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 11:02:30,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 11:02:30,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 11:02:30,971 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 11:02:30,973 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 11:02:30,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/list-properties/list_search-2.i [2021-10-24 11:02:31,095 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/data/51f7d43c3/2dce74490f25448d8a11b28ac61788b9/FLAG5d451763d [2021-10-24 11:02:31,823 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 11:02:31,824 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/sv-benchmarks/c/list-properties/list_search-2.i [2021-10-24 11:02:31,844 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/data/51f7d43c3/2dce74490f25448d8a11b28ac61788b9/FLAG5d451763d [2021-10-24 11:02:32,062 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/data/51f7d43c3/2dce74490f25448d8a11b28ac61788b9 [2021-10-24 11:02:32,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 11:02:32,067 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 11:02:32,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 11:02:32,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 11:02:32,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 11:02:32,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:02:32" (1/1) ... [2021-10-24 11:02:32,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7eeac387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:02:32, skipping insertion in model container [2021-10-24 11:02:32,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:02:32" (1/1) ... [2021-10-24 11:02:32,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 11:02:32,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 11:02:32,444 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/sv-benchmarks/c/list-properties/list_search-2.i[813,826] [2021-10-24 11:02:32,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:02:32,866 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) [2021-10-24 11:02:32,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1d48056e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:02:32, skipping insertion in model container [2021-10-24 11:02:32,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 11:02:32,868 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-24 11:02:32,872 INFO L168 Benchmark]: Toolchain (without parser) took 802.05 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 58.9 MB in the beginning and 101.2 MB in the end (delta: -42.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 11:02:32,874 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 92.3 MB. Free memory is still 46.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:02:32,876 INFO L168 Benchmark]: CACSL2BoogieTranslator took 798.56 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 58.7 MB in the beginning and 101.2 MB in the end (delta: -42.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 11:02:32,879 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 92.3 MB. Free memory is still 46.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 798.56 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 58.7 MB in the beginning and 101.2 MB in the end (delta: -42.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 792]: 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-e943c26 [2021-10-24 11:02:35,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 11:02:35,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 11:02:35,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 11:02:35,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 11:02:35,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 11:02:35,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 11:02:35,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 11:02:35,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 11:02:35,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 11:02:35,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 11:02:35,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 11:02:35,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 11:02:35,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 11:02:35,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 11:02:35,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 11:02:35,759 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 11:02:35,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 11:02:35,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 11:02:35,774 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 11:02:35,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 11:02:35,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 11:02:35,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 11:02:35,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 11:02:35,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 11:02:35,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 11:02:35,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 11:02:35,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 11:02:35,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 11:02:35,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 11:02:35,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 11:02:35,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 11:02:35,807 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 11:02:35,808 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 11:02:35,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 11:02:35,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 11:02:35,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 11:02:35,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 11:02:35,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 11:02:35,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 11:02:35,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 11:02:35,817 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2021-10-24 11:02:35,896 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 11:02:35,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 11:02:35,898 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 11:02:35,899 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 11:02:35,899 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 11:02:35,899 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 11:02:35,900 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 11:02:35,900 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 11:02:35,900 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 11:02:35,902 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-24 11:02:35,904 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-24 11:02:35,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 11:02:35,905 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 11:02:35,905 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 11:02:35,905 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 11:02:35,905 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 11:02:35,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 11:02:35,906 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-24 11:02:35,906 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-24 11:02:35,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 11:02:35,907 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 11:02:35,907 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 11:02:35,908 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 11:02:35,908 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 11:02:35,908 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 11:02:35,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 11:02:35,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 11:02:35,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 11:02:35,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:02:35,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 11:02:35,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 11:02:35,911 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 11:02:35,912 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 11:02:35,912 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 11:02:35,912 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 11:02:35,913 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_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1ea7ddff382751fa0e11562333bdb4981cac7bdbf1d356a007804e7e2e5a289 [2021-10-24 11:02:36,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 11:02:36,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 11:02:36,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 11:02:36,434 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 11:02:36,435 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 11:02:36,436 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/list-properties/list_search-2.i [2021-10-24 11:02:36,534 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/data/a871dcebf/1a5cd23a3a924599957a25cd5f61fa1e/FLAGe8d13f37c [2021-10-24 11:02:37,429 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 11:02:37,429 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/sv-benchmarks/c/list-properties/list_search-2.i [2021-10-24 11:02:37,449 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/data/a871dcebf/1a5cd23a3a924599957a25cd5f61fa1e/FLAGe8d13f37c [2021-10-24 11:02:37,569 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/data/a871dcebf/1a5cd23a3a924599957a25cd5f61fa1e [2021-10-24 11:02:37,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 11:02:37,575 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 11:02:37,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 11:02:37,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 11:02:37,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 11:02:37,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:02:37" (1/1) ... [2021-10-24 11:02:37,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@660f1931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:02:37, skipping insertion in model container [2021-10-24 11:02:37,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:02:37" (1/1) ... [2021-10-24 11:02:37,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 11:02:37,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 11:02:37,958 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/sv-benchmarks/c/list-properties/list_search-2.i[813,826] [2021-10-24 11:02:38,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:02:38,450 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-24 11:02:38,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 11:02:38,482 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/sv-benchmarks/c/list-properties/list_search-2.i[813,826] [2021-10-24 11:02:38,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:02:38,550 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 11:02:38,565 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/sv-benchmarks/c/list-properties/list_search-2.i[813,826] [2021-10-24 11:02:38,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:02:38,676 INFO L208 MainTranslator]: Completed translation [2021-10-24 11:02:38,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:02:38 WrapperNode [2021-10-24 11:02:38,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 11:02:38,679 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 11:02:38,679 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 11:02:38,679 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 11:02:38,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:02:38" (1/1) ... [2021-10-24 11:02:38,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:02:38" (1/1) ... [2021-10-24 11:02:38,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 11:02:38,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 11:02:38,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 11:02:38,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 11:02:38,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:02:38" (1/1) ... [2021-10-24 11:02:38,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:02:38" (1/1) ... [2021-10-24 11:02:38,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:02:38" (1/1) ... [2021-10-24 11:02:38,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:02:38" (1/1) ... [2021-10-24 11:02:38,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:02:38" (1/1) ... [2021-10-24 11:02:38,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:02:38" (1/1) ... [2021-10-24 11:02:38,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:02:38" (1/1) ... [2021-10-24 11:02:38,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 11:02:38,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 11:02:38,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 11:02:38,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 11:02:38,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:02:38" (1/1) ... [2021-10-24 11:02:38,854 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:02:38,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:02:38,891 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 11:02:38,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 11:02:38,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-24 11:02:38,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 11:02:38,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-24 11:02:38,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-24 11:02:38,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 11:02:38,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 11:02:38,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-24 11:02:38,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-24 11:02:38,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 11:02:38,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 11:02:40,006 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 11:02:40,010 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-24 11:02:40,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:02:40 BoogieIcfgContainer [2021-10-24 11:02:40,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 11:02:40,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 11:02:40,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 11:02:40,020 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 11:02:40,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:02:37" (1/3) ... [2021-10-24 11:02:40,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b26a3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:02:40, skipping insertion in model container [2021-10-24 11:02:40,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:02:38" (2/3) ... [2021-10-24 11:02:40,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b26a3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:02:40, skipping insertion in model container [2021-10-24 11:02:40,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:02:40" (3/3) ... [2021-10-24 11:02:40,024 INFO L111 eAbstractionObserver]: Analyzing ICFG list_search-2.i [2021-10-24 11:02:40,036 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 11:02:40,036 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 57 error locations. [2021-10-24 11:02:40,105 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 11:02:40,116 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 11:02:40,117 INFO L340 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2021-10-24 11:02:40,143 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 68 states have (on average 2.0588235294117645) internal successors, (140), 125 states have internal predecessors, (140), 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) [2021-10-24 11:02:40,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-24 11:02:40,166 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:02:40,167 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-24 11:02:40,168 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-10-24 11:02:40,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:02:40,176 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2021-10-24 11:02:40,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:02:40,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1921448559] [2021-10-24 11:02:40,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:02:40,193 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:02:40,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:02:40,199 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:02:40,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 11:02:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:02:40,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 11:02:40,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:02:40,417 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 [2021-10-24 11:02:40,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:02:40,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:02:40,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:02:40,505 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:02:40,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1921448559] [2021-10-24 11:02:40,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1921448559] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:02:40,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:02:40,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 11:02:40,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558268289] [2021-10-24 11:02:40,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 11:02:40,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:02:40,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 11:02:40,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:02:40,536 INFO L87 Difference]: Start difference. First operand has 126 states, 68 states have (on average 2.0588235294117645) internal successors, (140), 125 states have internal predecessors, (140), 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 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-24 11:02:40,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:02:40,988 INFO L93 Difference]: Finished difference Result 110 states and 119 transitions. [2021-10-24 11:02:40,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 11:02:40,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2021-10-24 11:02:40,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:02:41,001 INFO L225 Difference]: With dead ends: 110 [2021-10-24 11:02:41,002 INFO L226 Difference]: Without dead ends: 108 [2021-10-24 11:02:41,004 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:02:41,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-24 11:02:41,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-10-24 11:02:41,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 67 states have (on average 1.7462686567164178) internal successors, (117), 107 states have internal predecessors, (117), 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) [2021-10-24 11:02:41,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 117 transitions. [2021-10-24 11:02:41,069 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 117 transitions. Word has length 4 [2021-10-24 11:02:41,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:02:41,070 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 117 transitions. [2021-10-24 11:02:41,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-24 11:02:41,071 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 117 transitions. [2021-10-24 11:02:41,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-24 11:02:41,071 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:02:41,071 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-24 11:02:41,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-24 11:02:41,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:02:41,286 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-10-24 11:02:41,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:02:41,287 INFO L82 PathProgramCache]: Analyzing trace with hash 925606, now seen corresponding path program 1 times [2021-10-24 11:02:41,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:02:41,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1170225675] [2021-10-24 11:02:41,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:02:41,292 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:02:41,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:02:41,294 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:02:41,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 11:02:41,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:02:41,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 11:02:41,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:02:41,393 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 [2021-10-24 11:02:41,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:02:41,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:02:41,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:02:41,521 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:02:41,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1170225675] [2021-10-24 11:02:41,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1170225675] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:02:41,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:02:41,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-24 11:02:41,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24703535] [2021-10-24 11:02:41,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 11:02:41,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:02:41,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 11:02:41,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:02:41,526 INFO L87 Difference]: Start difference. First operand 108 states and 117 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:02:41,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:02:41,930 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2021-10-24 11:02:41,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 11:02:41,938 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-24 11:02:41,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:02:41,940 INFO L225 Difference]: With dead ends: 92 [2021-10-24 11:02:41,940 INFO L226 Difference]: Without dead ends: 92 [2021-10-24 11:02:41,941 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:02:41,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-24 11:02:41,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-10-24 11:02:41,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 67 states have (on average 1.507462686567164) internal successors, (101), 91 states have internal predecessors, (101), 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) [2021-10-24 11:02:41,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2021-10-24 11:02:41,955 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 4 [2021-10-24 11:02:41,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:02:41,955 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2021-10-24 11:02:41,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:02:41,958 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2021-10-24 11:02:41,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-24 11:02:41,962 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:02:41,962 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:02:41,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 11:02:42,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:02:42,173 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-10-24 11:02:42,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:02:42,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1934806513, now seen corresponding path program 1 times [2021-10-24 11:02:42,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:02:42,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110450658] [2021-10-24 11:02:42,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:02:42,177 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:02:42,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:02:42,180 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:02:42,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 11:02:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:02:42,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 11:02:42,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:02:42,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:02:42,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:02:42,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:02:42,683 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:02:42,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [110450658] [2021-10-24 11:02:42,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [110450658] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:02:42,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:02:42,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-24 11:02:42,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732201650] [2021-10-24 11:02:42,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 11:02:42,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:02:42,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 11:02:42,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:02:42,696 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2021-10-24 11:02:42,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:02:42,906 INFO L93 Difference]: Finished difference Result 108 states and 114 transitions. [2021-10-24 11:02:42,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 11:02:42,907 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 24 [2021-10-24 11:02:42,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:02:42,908 INFO L225 Difference]: With dead ends: 108 [2021-10-24 11:02:42,909 INFO L226 Difference]: Without dead ends: 108 [2021-10-24 11:02:42,909 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 11:02:42,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-24 11:02:42,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 86. [2021-10-24 11:02:42,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 61 states have (on average 1.5081967213114753) internal successors, (92), 85 states have internal predecessors, (92), 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) [2021-10-24 11:02:42,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2021-10-24 11:02:42,936 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 24 [2021-10-24 11:02:42,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:02:42,937 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2021-10-24 11:02:42,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2021-10-24 11:02:42,938 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2021-10-24 11:02:42,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-24 11:02:42,939 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:02:42,939 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:02:42,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 11:02:43,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:02:43,153 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-10-24 11:02:43,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:02:43,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1106677015, now seen corresponding path program 1 times [2021-10-24 11:02:43,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:02:43,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390872483] [2021-10-24 11:02:43,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:02:43,157 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:02:43,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:02:43,158 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:02:43,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-24 11:02:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:02:43,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 11:02:43,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:02:43,525 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 [2021-10-24 11:02:43,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:02:43,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:02:43,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:02:43,692 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:02:43,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390872483] [2021-10-24 11:02:43,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1390872483] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:02:43,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:02:43,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-24 11:02:43,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017625169] [2021-10-24 11:02:43,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 11:02:43,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:02:43,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 11:02:43,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 11:02:43,695 INFO L87 Difference]: Start difference. First operand 86 states and 92 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-10-24 11:02:44,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:02:44,148 INFO L93 Difference]: Finished difference Result 163 states and 174 transitions. [2021-10-24 11:02:44,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 11:02:44,149 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 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 24 [2021-10-24 11:02:44,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:02:44,151 INFO L225 Difference]: With dead ends: 163 [2021-10-24 11:02:44,152 INFO L226 Difference]: Without dead ends: 163 [2021-10-24 11:02:44,152 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 48.3ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-24 11:02:44,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-24 11:02:44,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 88. [2021-10-24 11:02:44,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 63 states have (on average 1.5238095238095237) internal successors, (96), 87 states have internal predecessors, (96), 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) [2021-10-24 11:02:44,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2021-10-24 11:02:44,163 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 24 [2021-10-24 11:02:44,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:02:44,164 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2021-10-24 11:02:44,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-10-24 11:02:44,164 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2021-10-24 11:02:44,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-24 11:02:44,165 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:02:44,166 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:02:44,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-24 11:02:44,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:02:44,372 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-10-24 11:02:44,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:02:44,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1106677016, now seen corresponding path program 1 times [2021-10-24 11:02:44,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:02:44,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622869292] [2021-10-24 11:02:44,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:02:44,374 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:02:44,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:02:44,375 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:02:44,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-24 11:02:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:02:44,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 11:02:44,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:02:44,602 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 [2021-10-24 11:02:44,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:02:44,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:02:45,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:02:45,029 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:02:45,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622869292] [2021-10-24 11:02:45,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622869292] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:02:45,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:02:45,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-24 11:02:45,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096328454] [2021-10-24 11:02:45,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-24 11:02:45,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:02:45,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-24 11:02:45,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-24 11:02:45,031 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 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) [2021-10-24 11:02:46,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:02:46,026 INFO L93 Difference]: Finished difference Result 181 states and 192 transitions. [2021-10-24 11:02:46,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-24 11:02:46,027 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 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) Word has length 24 [2021-10-24 11:02:46,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:02:46,028 INFO L225 Difference]: With dead ends: 181 [2021-10-24 11:02:46,029 INFO L226 Difference]: Without dead ends: 181 [2021-10-24 11:02:46,029 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 319.2ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-10-24 11:02:46,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-10-24 11:02:46,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 97. [2021-10-24 11:02:46,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 72 states have (on average 1.5694444444444444) internal successors, (113), 96 states have internal predecessors, (113), 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) [2021-10-24 11:02:46,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 113 transitions. [2021-10-24 11:02:46,038 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 113 transitions. Word has length 24 [2021-10-24 11:02:46,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:02:46,039 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 113 transitions. [2021-10-24 11:02:46,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 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) [2021-10-24 11:02:46,039 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 113 transitions. [2021-10-24 11:02:46,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-24 11:02:46,041 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:02:46,041 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:02:46,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-24 11:02:46,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:02:46,257 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-10-24 11:02:46,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:02:46,257 INFO L82 PathProgramCache]: Analyzing trace with hash 844428815, now seen corresponding path program 1 times [2021-10-24 11:02:46,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:02:46,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796561095] [2021-10-24 11:02:46,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:02:46,259 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:02:46,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:02:46,260 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:02:46,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-24 11:02:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:02:46,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 11:02:46,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:02:46,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:02:46,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:02:46,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:02:46,654 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:02:46,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796561095] [2021-10-24 11:02:46,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796561095] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:02:46,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:02:46,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-24 11:02:46,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946199172] [2021-10-24 11:02:46,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 11:02:46,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:02:46,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 11:02:46,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 11:02:46,657 INFO L87 Difference]: Start difference. First operand 97 states and 113 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:02:46,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:02:46,894 INFO L93 Difference]: Finished difference Result 115 states and 121 transitions. [2021-10-24 11:02:46,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 11:02:46,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-24 11:02:46,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:02:46,896 INFO L225 Difference]: With dead ends: 115 [2021-10-24 11:02:46,896 INFO L226 Difference]: Without dead ends: 115 [2021-10-24 11:02:46,897 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 11:02:46,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-10-24 11:02:46,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 97. [2021-10-24 11:02:46,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 72 states have (on average 1.5416666666666667) internal successors, (111), 96 states have internal predecessors, (111), 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) [2021-10-24 11:02:46,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 111 transitions. [2021-10-24 11:02:46,904 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 111 transitions. Word has length 27 [2021-10-24 11:02:46,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:02:46,904 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 111 transitions. [2021-10-24 11:02:46,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:02:46,905 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 111 transitions. [2021-10-24 11:02:46,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-24 11:02:46,906 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:02:46,906 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:02:46,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-24 11:02:47,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:02:47,122 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-10-24 11:02:47,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:02:47,123 INFO L82 PathProgramCache]: Analyzing trace with hash 846058159, now seen corresponding path program 1 times [2021-10-24 11:02:47,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:02:47,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429365996] [2021-10-24 11:02:47,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:02:47,124 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:02:47,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:02:47,126 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:02:47,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-24 11:02:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:02:47,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-24 11:02:47,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:02:47,463 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 [2021-10-24 11:02:47,520 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-24 11:02:47,521 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 [2021-10-24 11:02:47,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-10-24 11:02:47,949 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 44 treesize of output 36 [2021-10-24 11:02:48,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:02:48,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:02:48,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:02:48,406 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:02:48,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429365996] [2021-10-24 11:02:48,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1429365996] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:02:48,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [222513836] [2021-10-24 11:02:48,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:02:48,407 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 11:02:48,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 11:02:48,414 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 11:02:48,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-10-24 11:02:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:02:48,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-24 11:02:48,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:02:48,861 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 [2021-10-24 11:02:48,902 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-24 11:02:48,905 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 [2021-10-24 11:02:49,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-10-24 11:02:49,131 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 44 treesize of output 36 [2021-10-24 11:02:49,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:02:49,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:02:49,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:02:49,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [222513836] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:02:49,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251901393] [2021-10-24 11:02:49,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:02:49,349 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:02:49,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:02:49,351 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:02:49,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-24 11:02:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:02:49,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-24 11:02:49,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:02:49,635 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 [2021-10-24 11:02:49,690 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-24 11:02:49,690 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 2 case distinctions, treesize of input 20 treesize of output 27 [2021-10-24 11:02:49,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2021-10-24 11:02:50,246 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 59 treesize of output 47 [2021-10-24 11:02:50,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:02:50,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:03:11,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:03:11,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251901393] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:03:11,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-24 11:03:11,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9, 8, 9, 9] total 22 [2021-10-24 11:03:11,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642977376] [2021-10-24 11:03:11,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-24 11:03:11,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:03:11,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-24 11:03:11,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=413, Unknown=9, NotChecked=0, Total=506 [2021-10-24 11:03:11,429 INFO L87 Difference]: Start difference. First operand 97 states and 111 transitions. Second operand has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 23 states have internal predecessors, (56), 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) [2021-10-24 11:03:14,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:03:14,859 INFO L93 Difference]: Finished difference Result 169 states and 181 transitions. [2021-10-24 11:03:14,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-24 11:03:14,860 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-24 11:03:14,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:03:14,862 INFO L225 Difference]: With dead ends: 169 [2021-10-24 11:03:14,862 INFO L226 Difference]: Without dead ends: 169 [2021-10-24 11:03:14,863 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 121 SyntacticMatches, 16 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 22977.0ms TimeCoverageRelationStatistics Valid=253, Invalid=860, Unknown=9, NotChecked=0, Total=1122 [2021-10-24 11:03:14,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-10-24 11:03:14,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 100. [2021-10-24 11:03:14,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 75 states have (on average 1.5466666666666666) internal successors, (116), 99 states have internal predecessors, (116), 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) [2021-10-24 11:03:14,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 116 transitions. [2021-10-24 11:03:14,873 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 116 transitions. Word has length 27 [2021-10-24 11:03:14,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:03:14,873 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 116 transitions. [2021-10-24 11:03:14,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 23 states have internal predecessors, (56), 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) [2021-10-24 11:03:14,873 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 116 transitions. [2021-10-24 11:03:14,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-24 11:03:14,874 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:03:14,874 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:03:14,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-10-24 11:03:15,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-24 11:03:15,284 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-24 11:03:15,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:03:15,475 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-10-24 11:03:15,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:03:15,476 INFO L82 PathProgramCache]: Analyzing trace with hash 846058160, now seen corresponding path program 1 times [2021-10-24 11:03:15,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:03:15,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [400660040] [2021-10-24 11:03:15,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:03:15,477 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:03:15,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:03:15,477 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:03:15,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-24 11:03:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:03:15,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-24 11:03:15,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:03:15,847 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 [2021-10-24 11:03:15,925 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-24 11:03:15,925 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 12 treesize of output 14 [2021-10-24 11:03:16,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-24 11:03:16,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-24 11:03:16,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2021-10-24 11:03:16,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2021-10-24 11:03:16,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:03:16,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:03:17,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:03:17,353 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:03:17,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [400660040] [2021-10-24 11:03:17,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [400660040] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:03:17,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1364014177] [2021-10-24 11:03:17,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:03:17,354 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 11:03:17,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 11:03:17,364 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 11:03:17,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-10-24 11:03:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:03:17,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-24 11:03:17,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:03:17,923 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 [2021-10-24 11:03:17,930 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 [2021-10-24 11:03:18,144 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-24 11:03:18,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-10-24 11:03:18,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-10-24 11:03:18,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-10-24 11:03:18,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-24 11:03:18,671 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 44 treesize of output 36 [2021-10-24 11:03:18,674 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 33 treesize of output 21 [2021-10-24 11:03:18,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:03:18,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:03:24,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:03:24,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1364014177] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:03:24,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124891060] [2021-10-24 11:03:24,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:03:24,566 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:03:24,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:03:24,567 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:03:24,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-24 11:03:24,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:03:24,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-24 11:03:24,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:03:24,922 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 [2021-10-24 11:03:24,931 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 [2021-10-24 11:03:25,058 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-24 11:03:25,058 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 16 treesize of output 16 [2021-10-24 11:03:25,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-10-24 11:03:25,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-10-24 11:03:25,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-24 11:03:25,319 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 44 treesize of output 36 [2021-10-24 11:03:25,324 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 33 treesize of output 21 [2021-10-24 11:03:25,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:03:25,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:03:29,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:03:29,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124891060] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:03:29,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-24 11:03:29,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 27 [2021-10-24 11:03:29,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86844010] [2021-10-24 11:03:29,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-24 11:03:29,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:03:29,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-24 11:03:29,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=637, Unknown=2, NotChecked=0, Total=756 [2021-10-24 11:03:29,283 INFO L87 Difference]: Start difference. First operand 100 states and 116 transitions. Second operand has 28 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 28 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:03:33,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:03:33,947 INFO L93 Difference]: Finished difference Result 185 states and 196 transitions. [2021-10-24 11:03:33,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-24 11:03:33,948 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 28 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-24 11:03:33,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:03:33,950 INFO L225 Difference]: With dead ends: 185 [2021-10-24 11:03:33,958 INFO L226 Difference]: Without dead ends: 185 [2021-10-24 11:03:33,959 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 130 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 12057.9ms TimeCoverageRelationStatistics Valid=476, Invalid=1684, Unknown=2, NotChecked=0, Total=2162 [2021-10-24 11:03:33,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-10-24 11:03:33,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 100. [2021-10-24 11:03:33,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 75 states have (on average 1.5333333333333334) internal successors, (115), 99 states have internal predecessors, (115), 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) [2021-10-24 11:03:33,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2021-10-24 11:03:33,965 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 27 [2021-10-24 11:03:33,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:03:33,966 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2021-10-24 11:03:33,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 28 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:03:33,966 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2021-10-24 11:03:33,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-24 11:03:33,967 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:03:33,968 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:03:34,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-10-24 11:03:34,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2021-10-24 11:03:34,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-24 11:03:34,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:03:34,585 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-10-24 11:03:34,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:03:34,585 INFO L82 PathProgramCache]: Analyzing trace with hash 2048960887, now seen corresponding path program 1 times [2021-10-24 11:03:34,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:03:34,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929660538] [2021-10-24 11:03:34,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:03:34,585 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:03:34,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:03:34,586 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:03:34,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-24 11:03:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:03:34,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-24 11:03:34,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:03:35,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-10-24 11:03:35,123 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 16 treesize of output 8 [2021-10-24 11:03:35,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:03:35,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:03:35,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:03:35,371 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:03:35,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929660538] [2021-10-24 11:03:35,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1929660538] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:03:35,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [147674129] [2021-10-24 11:03:35,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:03:35,371 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 11:03:35,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 11:03:35,372 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 11:03:35,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-10-24 11:03:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:03:35,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-24 11:03:35,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:03:35,889 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 [2021-10-24 11:03:36,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 11:03:36,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:03:36,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 11:03:36,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [147674129] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:03:36,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-24 11:03:36,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [10, 9] total 16 [2021-10-24 11:03:36,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405511888] [2021-10-24 11:03:36,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 11:03:36,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:03:36,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 11:03:36,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-10-24 11:03:36,212 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 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) [2021-10-24 11:03:36,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:03:36,697 INFO L93 Difference]: Finished difference Result 163 states and 175 transitions. [2021-10-24 11:03:36,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 11:03:36,698 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 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 30 [2021-10-24 11:03:36,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:03:36,699 INFO L225 Difference]: With dead ends: 163 [2021-10-24 11:03:36,699 INFO L226 Difference]: Without dead ends: 163 [2021-10-24 11:03:36,700 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 101 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 452.3ms TimeCoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-10-24 11:03:36,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-24 11:03:36,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 105. [2021-10-24 11:03:36,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 80 states have (on average 1.55) internal successors, (124), 104 states have internal predecessors, (124), 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) [2021-10-24 11:03:36,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 124 transitions. [2021-10-24 11:03:36,705 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 124 transitions. Word has length 30 [2021-10-24 11:03:36,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:03:36,706 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 124 transitions. [2021-10-24 11:03:36,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 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) [2021-10-24 11:03:36,706 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 124 transitions. [2021-10-24 11:03:36,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-24 11:03:36,707 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:03:36,707 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:03:36,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-10-24 11:03:36,922 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-10-24 11:03:37,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:03:37,111 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-10-24 11:03:37,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:03:37,112 INFO L82 PathProgramCache]: Analyzing trace with hash 2048960888, now seen corresponding path program 1 times [2021-10-24 11:03:37,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:03:37,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163463441] [2021-10-24 11:03:37,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:03:37,113 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:03:37,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:03:37,116 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:03:37,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-24 11:03:37,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:03:37,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-24 11:03:37,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:03:37,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-10-24 11:03:37,810 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 16 treesize of output 8 [2021-10-24 11:03:37,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:03:37,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:03:38,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:03:38,047 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:03:38,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163463441] [2021-10-24 11:03:38,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163463441] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:03:38,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1801012411] [2021-10-24 11:03:38,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:03:38,048 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 11:03:38,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 11:03:38,049 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 11:03:38,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-10-24 11:03:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:03:38,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-24 11:03:38,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:03:38,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-10-24 11:03:38,636 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 16 treesize of output 8 [2021-10-24 11:03:38,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:03:38,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:03:38,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:03:38,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1801012411] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:03:38,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569962730] [2021-10-24 11:03:38,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:03:38,774 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:03:38,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:03:38,775 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:03:38,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-24 11:03:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:03:39,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 11:03:39,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:03:39,234 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 [2021-10-24 11:03:39,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 11:03:39,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:03:40,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 11:03:40,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569962730] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:03:40,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-10-24 11:03:40,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [10, 9, 10, 9] total 19 [2021-10-24 11:03:40,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972670727] [2021-10-24 11:03:40,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-24 11:03:40,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:03:40,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-24 11:03:40,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-10-24 11:03:40,048 INFO L87 Difference]: Start difference. First operand 105 states and 124 transitions. Second operand has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 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) [2021-10-24 11:03:41,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:03:41,381 INFO L93 Difference]: Finished difference Result 264 states and 281 transitions. [2021-10-24 11:03:41,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-24 11:03:41,382 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 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) Word has length 30 [2021-10-24 11:03:41,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:03:41,384 INFO L225 Difference]: With dead ends: 264 [2021-10-24 11:03:41,385 INFO L226 Difference]: Without dead ends: 264 [2021-10-24 11:03:41,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 963.8ms TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2021-10-24 11:03:41,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-10-24 11:03:41,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 108. [2021-10-24 11:03:41,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 83 states have (on average 1.5301204819277108) internal successors, (127), 107 states have internal predecessors, (127), 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) [2021-10-24 11:03:41,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 127 transitions. [2021-10-24 11:03:41,391 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 127 transitions. Word has length 30 [2021-10-24 11:03:41,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:03:41,391 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 127 transitions. [2021-10-24 11:03:41,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 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) [2021-10-24 11:03:41,391 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 127 transitions. [2021-10-24 11:03:41,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-24 11:03:41,392 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:03:41,393 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:03:41,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-10-24 11:03:41,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-10-24 11:03:41,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-10-24 11:03:41,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt [2021-10-24 11:03:41,997 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-10-24 11:03:41,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:03:41,997 INFO L82 PathProgramCache]: Analyzing trace with hash 2050590231, now seen corresponding path program 2 times [2021-10-24 11:03:41,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:03:41,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [212074848] [2021-10-24 11:03:41,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-24 11:03:41,998 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:03:41,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:03:41,999 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:03:42,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-24 11:03:42,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-24 11:03:42,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 11:03:42,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-24 11:03:42,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:03:42,576 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 [2021-10-24 11:03:42,646 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-24 11:03:42,646 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 2 case distinctions, treesize of input 22 treesize of output 29 [2021-10-24 11:03:42,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-24 11:03:42,910 INFO L354 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2021-10-24 11:03:42,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 48 [2021-10-24 11:03:43,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:03:43,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:03:43,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:03:43,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:03:43,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:03:43,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:03:43,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:03:43,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:03:43,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:03:43,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:03:43,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 36 [2021-10-24 11:03:43,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-24 11:03:43,208 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 11:03:43,240 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-10-24 11:03:43,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 57 treesize of output 56 [2021-10-24 11:03:44,340 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 95 treesize of output 87 [2021-10-24 11:03:45,552 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:03:45,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 70 [2021-10-24 11:03:46,944 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:03:46,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:03:48,725 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:03:48,727 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 132 [2021-10-24 11:03:53,084 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (v_ULTIMATE.start_insert_list_~l.base_92 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_ULTIMATE.start_insert_list_~l.base_92 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_insert_list_~l.base_92 (store (store (store (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_insert_list_~l.base_92) (_ bv0 32) v_DerPreprocessor_1) (_ bv1 32) v_DerPreprocessor_2) (_ bv2 32) v_DerPreprocessor_3) (_ bv3 32) v_DerPreprocessor_4) (_ bv4 32) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset)))))))))))))) (_ bv1 1)))) is different from false [2021-10-24 11:03:55,101 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (v_ULTIMATE.start_insert_list_~l.base_92 (_ BitVec 32))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_ULTIMATE.start_insert_list_~l.base_92 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_insert_list_~l.base_92 (store (store (store (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_insert_list_~l.base_92) (_ bv0 32) v_DerPreprocessor_1) (_ bv1 32) v_DerPreprocessor_2) (_ bv2 32) v_DerPreprocessor_3) (_ bv3 32) v_DerPreprocessor_4) (_ bv4 32) c_ULTIMATE.start_insert_list_~l.base)) c_ULTIMATE.start_insert_list_~l.base) (bvadd (_ bv4 32) c_ULTIMATE.start_insert_list_~l.offset))))))))))))))))) is different from false [2021-10-24 11:04:24,090 WARN L207 SmtUtils]: Spent 28.92 s on a formula simplification that was a NOOP. DAG size: 1716 [2021-10-24 11:08:11,490 WARN L207 SmtUtils]: Spent 3.78 m on a formula simplification. DAG size of input: 1718 DAG size of output: 1718 [2021-10-24 11:10:36,348 WARN L207 SmtUtils]: Spent 1.41 m on a formula simplification. DAG size of input: 1663 DAG size of output: 1464 [2021-10-24 11:11:34,243 WARN L207 SmtUtils]: Spent 57.85 s on a formula simplification. DAG size of input: 1461 DAG size of output: 1461 [2021-10-24 11:12:33,463 WARN L207 SmtUtils]: Spent 51.83 s on a formula simplification. DAG size of input: 1461 DAG size of output: 1460 [2021-10-24 11:12:46,652 WARN L207 SmtUtils]: Spent 6.41 s on a formula simplification. DAG size of input: 1461 DAG size of output: 1 [2021-10-24 11:12:46,690 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:12:46,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [212074848] [2021-10-24 11:12:46,691 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-24 11:12:46,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1468894083] [2021-10-24 11:12:46,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-24 11:12:46,692 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 11:12:46,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 11:12:46,709 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 11:12:46,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-10-24 11:12:47,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-24 11:12:47,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 11:12:47,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-24 11:12:47,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:12:47,795 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-24 11:12:47,796 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 [2021-10-24 11:12:47,858 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-24 11:12:47,858 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 [2021-10-24 11:12:47,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-10-24 11:12:48,288 INFO L354 Elim1Store]: treesize reduction 62, result has 37.4 percent of original size [2021-10-24 11:12:48,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 43 treesize of output 66 [2021-10-24 11:12:48,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:12:48,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:12:48,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:12:48,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:12:48,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:12:48,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:12:48,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 37 [2021-10-24 11:12:48,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-24 11:12:48,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 11:12:48,682 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-10-24 11:12:48,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 69 treesize of output 64 [2021-10-24 11:12:49,327 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 95 treesize of output 87 [2021-10-24 11:12:49,975 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-24 11:12:49,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 70 [2021-10-24 11:12:50,703 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:12:50,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:12:50,889 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:12:50,890 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 132 [2021-10-24 11:12:55,238 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (v_ULTIMATE.start_insert_list_~l.base_99 (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_ULTIMATE.start_insert_list_~l.base_99 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_insert_list_~l.base_99 (store (store (store (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_insert_list_~l.base_99) (_ bv0 32) v_DerPreprocessor_1) (_ bv1 32) v_DerPreprocessor_2) (_ bv2 32) v_DerPreprocessor_3) (_ bv3 32) v_DerPreprocessor_4) (_ bv4 32) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset)))))))))))))) (_ bv1 1))) (not (= (_ bv0 1) (select |c_#valid| v_ULTIMATE.start_insert_list_~l.base_99))))) is different from false [2021-10-24 11:12:57,280 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (v_ULTIMATE.start_insert_list_~l.base_99 (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_ULTIMATE.start_insert_list_~l.base_99 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_insert_list_~l.base_99 (store (store (store (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_insert_list_~l.base_99) (_ bv0 32) v_DerPreprocessor_1) (_ bv1 32) v_DerPreprocessor_2) (_ bv2 32) v_DerPreprocessor_3) (_ bv3 32) v_DerPreprocessor_4) (_ bv4 32) c_ULTIMATE.start_insert_list_~l.base)) c_ULTIMATE.start_insert_list_~l.base) (bvadd (_ bv4 32) c_ULTIMATE.start_insert_list_~l.offset)))))))))))))) (_ bv1 1))) (not (= (_ bv0 1) (select |c_#valid| v_ULTIMATE.start_insert_list_~l.base_99))))) is different from false [2021-10-24 11:12:59,302 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-24 11:12:59,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656950614] [2021-10-24 11:12:59,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-24 11:12:59,303 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:12:59,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:12:59,304 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:12:59,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-24 11:13:03,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-24 11:13:03,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 11:13:03,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-24 11:13:03,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:13:03,740 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 [2021-10-24 11:13:03,780 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-24 11:13:03,780 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 [2021-10-24 11:13:03,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-10-24 11:13:03,938 INFO L354 Elim1Store]: treesize reduction 62, result has 37.4 percent of original size [2021-10-24 11:13:03,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 63 [2021-10-24 11:13:04,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:04,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:04,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:04,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:04,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:04,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:04,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 37 [2021-10-24 11:13:04,285 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 11:13:04,302 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-10-24 11:13:04,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 65 treesize of output 60 [2021-10-24 11:13:04,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-24 11:13:04,635 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 95 treesize of output 87 [2021-10-24 11:13:05,001 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-24 11:13:05,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 70 [2021-10-24 11:13:05,777 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:13:05,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:13:06,696 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:06,701 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 132 [2021-10-24 11:13:11,073 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (v_ULTIMATE.start_insert_list_~l.base_100 (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| v_ULTIMATE.start_insert_list_~l.base_100))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_ULTIMATE.start_insert_list_~l.base_100 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_insert_list_~l.base_100 (store (store (store (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_insert_list_~l.base_100) (_ bv0 32) v_DerPreprocessor_1) (_ bv1 32) v_DerPreprocessor_2) (_ bv2 32) v_DerPreprocessor_3) (_ bv3 32) v_DerPreprocessor_4) (_ bv4 32) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset)))))))))))))) (_ bv1 1))))) is different from false [2021-10-24 11:13:13,121 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (v_ULTIMATE.start_insert_list_~l.base_100 (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| v_ULTIMATE.start_insert_list_~l.base_100))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_ULTIMATE.start_insert_list_~l.base_100 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_insert_list_~l.base_100 (store (store (store (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_insert_list_~l.base_100) (_ bv0 32) v_DerPreprocessor_1) (_ bv1 32) v_DerPreprocessor_2) (_ bv2 32) v_DerPreprocessor_3) (_ bv3 32) v_DerPreprocessor_4) (_ bv4 32) c_ULTIMATE.start_insert_list_~l.base)) c_ULTIMATE.start_insert_list_~l.base) (bvadd (_ bv4 32) c_ULTIMATE.start_insert_list_~l.offset)))))))))))))) (_ bv1 1))))) is different from false [2021-10-24 11:13:29,741 WARN L207 SmtUtils]: Spent 16.56 s on a formula simplification that was a NOOP. DAG size: 2664 [2021-10-24 11:13:29,763 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-24 11:13:29,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:13:29,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-24 11:13:29,763 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-24 11:13:29,764 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-24 11:13:29,771 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATION [2021-10-24 11:13:29,774 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-24 11:13:29,774 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-24 11:13:29,774 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-24 11:13:29,775 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-24 11:13:29,775 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-24 11:13:29,775 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-24 11:13:29,775 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-24 11:13:29,776 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-24 11:13:29,776 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-24 11:13:29,776 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-24 11:13:29,776 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-24 11:13:29,776 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-24 11:13:29,777 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-24 11:13:29,777 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-24 11:13:29,777 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-24 11:13:29,777 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-24 11:13:29,778 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-24 11:13:29,778 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-24 11:13:29,778 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-10-24 11:13:29,778 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION [2021-10-24 11:13:29,778 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION [2021-10-24 11:13:29,779 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION [2021-10-24 11:13:29,779 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION [2021-10-24 11:13:29,779 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION [2021-10-24 11:13:29,779 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION [2021-10-24 11:13:29,780 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION [2021-10-24 11:13:29,780 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION [2021-10-24 11:13:29,780 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION [2021-10-24 11:13:29,780 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION [2021-10-24 11:13:29,780 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION [2021-10-24 11:13:29,781 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION [2021-10-24 11:13:29,781 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATION [2021-10-24 11:13:29,781 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATION [2021-10-24 11:13:29,781 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATION [2021-10-24 11:13:29,781 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATION [2021-10-24 11:13:29,782 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATION [2021-10-24 11:13:29,782 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATION [2021-10-24 11:13:29,782 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATION [2021-10-24 11:13:29,782 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATION [2021-10-24 11:13:29,783 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK [2021-10-24 11:13:29,783 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41REQUIRES_VIOLATION [2021-10-24 11:13:29,783 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATION [2021-10-24 11:13:29,783 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43REQUIRES_VIOLATION [2021-10-24 11:13:29,784 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44REQUIRES_VIOLATION [2021-10-24 11:13:29,784 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45REQUIRES_VIOLATION [2021-10-24 11:13:29,784 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46REQUIRES_VIOLATION [2021-10-24 11:13:29,784 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47REQUIRES_VIOLATION [2021-10-24 11:13:29,784 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48REQUIRES_VIOLATION [2021-10-24 11:13:29,785 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49REQUIRES_VIOLATION [2021-10-24 11:13:29,785 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50REQUIRES_VIOLATION [2021-10-24 11:13:29,785 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 11:13:29,785 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 11:13:29,786 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 11:13:29,786 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr54REQUIRES_VIOLATION [2021-10-24 11:13:29,786 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr55REQUIRES_VIOLATION [2021-10-24 11:13:29,786 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_LEAK [2021-10-24 11:13:29,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-10-24 11:13:30,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-24 11:13:30,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-10-24 11:13:30,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:13:30,398 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 11:13:30,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:13:30 BoogieIcfgContainer [2021-10-24 11:13:30,415 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 11:13:30,416 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 11:13:30,416 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 11:13:30,416 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 11:13:30,417 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:02:40" (3/4) ... [2021-10-24 11:13:30,421 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 11:13:30,421 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 11:13:30,422 INFO L168 Benchmark]: Toolchain (without parser) took 652847.15 ms. Allocated memory was 62.9 MB in the beginning and 861.9 MB in the end (delta: 799.0 MB). Free memory was 40.4 MB in the beginning and 534.1 MB in the end (delta: -493.7 MB). Peak memory consumption was 306.9 MB. Max. memory is 16.1 GB. [2021-10-24 11:13:30,422 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 62.9 MB. Free memory is still 43.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:13:30,423 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1098.50 ms. Allocated memory is still 62.9 MB. Free memory was 40.2 MB in the beginning and 26.2 MB in the end (delta: 14.0 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2021-10-24 11:13:30,423 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.33 ms. Allocated memory is still 62.9 MB. Free memory was 26.2 MB in the beginning and 23.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 11:13:30,424 INFO L168 Benchmark]: Boogie Preprocessor took 70.03 ms. Allocated memory was 62.9 MB in the beginning and 77.6 MB in the end (delta: 14.7 MB). Free memory was 23.6 MB in the beginning and 58.7 MB in the end (delta: -35.0 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. [2021-10-24 11:13:30,424 INFO L168 Benchmark]: RCFGBuilder took 1173.69 ms. Allocated memory is still 77.6 MB. Free memory was 58.7 MB in the beginning and 55.0 MB in the end (delta: 3.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 16.1 GB. [2021-10-24 11:13:30,425 INFO L168 Benchmark]: TraceAbstraction took 650398.87 ms. Allocated memory was 77.6 MB in the beginning and 861.9 MB in the end (delta: 784.3 MB). Free memory was 54.6 MB in the beginning and 534.1 MB in the end (delta: -479.6 MB). Peak memory consumption was 547.3 MB. Max. memory is 16.1 GB. [2021-10-24 11:13:30,425 INFO L168 Benchmark]: Witness Printer took 5.28 ms. Allocated memory is still 861.9 MB. Free memory is still 534.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:13:30,428 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 62.9 MB. Free memory is still 43.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1098.50 ms. Allocated memory is still 62.9 MB. Free memory was 40.2 MB in the beginning and 26.2 MB in the end (delta: 14.0 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 89.33 ms. Allocated memory is still 62.9 MB. Free memory was 26.2 MB in the beginning and 23.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 70.03 ms. Allocated memory was 62.9 MB in the beginning and 77.6 MB in the end (delta: 14.7 MB). Free memory was 23.6 MB in the beginning and 58.7 MB in the end (delta: -35.0 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1173.69 ms. Allocated memory is still 77.6 MB. Free memory was 58.7 MB in the beginning and 55.0 MB in the end (delta: 3.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 650398.87 ms. Allocated memory was 77.6 MB in the beginning and 861.9 MB in the end (delta: 784.3 MB). Free memory was 54.6 MB in the beginning and 534.1 MB in the end (delta: -479.6 MB). Peak memory consumption was 547.3 MB. Max. memory is 16.1 GB. * Witness Printer took 5.28 ms. Allocated memory is still 861.9 MB. Free memory is still 534.1 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: 813]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L769] mlist *head; [L804] int i; [L805] mlist *mylist = 0; [L806] mlist *temp; [L792] l = (mlist*)malloc(sizeof(mlist)) [L793] COND TRUE head==((void *)0) [L794] l->key = k [L795] l->next = ((void *)0) [L800] head = l [L801] return 0; [L792] l = (mlist*)malloc(sizeof(mlist)) [L793] COND FALSE !(head==((void *)0)) [L797] l->key = k [L798] l->next = head [L800] head = l [L801] return 0; [L792] l = (mlist*)malloc(sizeof(mlist)) [L793] COND FALSE !(head==((void *)0)) [L797] l->key = k [L798] l->next = head [L800] head = l [L801] return 0; [L792] l = (mlist*)malloc(sizeof(mlist)) [L793] COND FALSE !(head==((void *)0)) [L797] l->key = k [L798] l->next = head [L800] head = l [L801] return 0; [L811] mylist = head [L812] COND TRUE \read(*mylist) [L813] EXPR mylist->next [L813] mylist = mylist->next [L812] COND TRUE \read(*mylist) [L813] EXPR mylist->next [L813] mylist = mylist->next [L812] COND TRUE \read(*mylist) [L813] mylist->next - UnprovableResult [Line: 794]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 794]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 795]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 795]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 797]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 797]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 798]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 798]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 794]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 794]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 795]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 795]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 797]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 797]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 798]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 798]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 794]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 794]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 795]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 795]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 797]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 797]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 798]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 798]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 794]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 794]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 795]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 795]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 797]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 797]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 798]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 798]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 813]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 772]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 772]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 773]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 773]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 816]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 816]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 15]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 785]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 785]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 787]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 787]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 787]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 787]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 820]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 820]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 803]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 126 locations, 57 error locations. Started 1 CEGAR loops. OverallTime: 650293.3ms, OverallIterations: 11, TraceHistogramMax: 3, EmptinessCheckTime: 41.2ms, AutomataDifference: 12765.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 20.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 506 SDtfs, 4571 SDslu, 960 SDs, 0 SdLazy, 1931 SolverSat, 346 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7366.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 863 GetRequests, 699 SyntacticMatches, 20 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 1069 ImplicationChecksByTransitivity, 36917.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=126occurred in iteration=0, InterpolantAutomatonStates: 86, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 122.8ms AutomataMinimizationTime, 10 MinimizatonAttempts, 567 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 281.4ms SsaConstructionTime, 1743.5ms SatisfiabilityAnalysisTime, 40021.2ms InterpolantComputationTime, 419 NumberOfCodeBlocks, 419 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 804 ConstructedInterpolants, 53 QuantifiedInterpolants, 5861 SizeOfPredicates, 123 NumberOfNonLiveVariables, 2326 ConjunctsInSsa, 169 ConjunctsInUnsatCore, 34 InterpolantComputations, 16 PerfectInterpolantSequences, 4/34 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 [2021-10-24 11:13:30,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ec36e7-f440-4e58-b86f-5f9aaad0b56b/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...