./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 80f1df6d4bc7961b41bec7d16d328ef23e1639399b1fb3a18bcdda9891a98148 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:51:09,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:51:09,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:51:09,533 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:51:09,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:51:09,535 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:51:09,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:51:09,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:51:09,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:51:09,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:51:09,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:51:09,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:51:09,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:51:09,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:51:09,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:51:09,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:51:09,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:51:09,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:51:09,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:51:09,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:51:09,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:51:09,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:51:09,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:51:09,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:51:09,615 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:51:09,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:51:09,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:51:09,620 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:51:09,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:51:09,623 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:51:09,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:51:09,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:51:09,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:51:09,630 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:51:09,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:51:09,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:51:09,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:51:09,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:51:09,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:51:09,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:51:09,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:51:09,638 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-20 05:51:09,688 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:51:09,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:51:09,692 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:51:09,693 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:51:09,699 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:51:09,700 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:51:09,701 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:51:09,701 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:51:09,701 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:51:09,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:51:09,702 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:51:09,702 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 05:51:09,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:51:09,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:51:09,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:51:09,703 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 05:51:09,703 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 05:51:09,704 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 05:51:09,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:51:09,704 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 05:51:09,704 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:51:09,705 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:51:09,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:51:09,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:51:09,706 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:51:09,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:51:09,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:51:09,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:51:09,707 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:51:09,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:51:09,707 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:51:09,708 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80f1df6d4bc7961b41bec7d16d328ef23e1639399b1fb3a18bcdda9891a98148 [2021-11-20 05:51:10,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:51:10,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:51:10,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:51:10,092 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:51:10,093 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:51:10,095 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i [2021-11-20 05:51:10,196 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/data/52397d7d8/da6eaf260e8742e58223560f2d214abc/FLAGd6582ffb7 [2021-11-20 05:51:10,991 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:51:10,992 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i [2021-11-20 05:51:11,028 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/data/52397d7d8/da6eaf260e8742e58223560f2d214abc/FLAGd6582ffb7 [2021-11-20 05:51:11,134 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/data/52397d7d8/da6eaf260e8742e58223560f2d214abc [2021-11-20 05:51:11,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:51:11,139 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:51:11,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:51:11,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:51:11,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:51:11,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:51:11" (1/1) ... [2021-11-20 05:51:11,165 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e65caa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:11, skipping insertion in model container [2021-11-20 05:51:11,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:51:11" (1/1) ... [2021-11-20 05:51:11,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:51:11,248 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:51:11,825 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i[33021,33034] [2021-11-20 05:51:11,996 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i[45234,45247] [2021-11-20 05:51:12,025 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:51:12,044 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-20 05:51:12,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4234041c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:12, skipping insertion in model container [2021-11-20 05:51:12,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:51:12,051 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-20 05:51:12,055 INFO L158 Benchmark]: Toolchain (without parser) took 914.46ms. Allocated memory is still 134.2MB. Free memory was 98.9MB in the beginning and 98.9MB in the end (delta: 5.3kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 05:51:12,057 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 86.0MB. Free memory was 42.6MB in the beginning and 42.5MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:51:12,061 INFO L158 Benchmark]: CACSL2BoogieTranslator took 896.38ms. Allocated memory is still 134.2MB. Free memory was 98.9MB in the beginning and 98.9MB in the end (delta: 5.3kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 05:51:12,063 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 86.0MB. Free memory was 42.6MB in the beginning and 42.5MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 896.38ms. Allocated memory is still 134.2MB. Free memory was 98.9MB in the beginning and 98.9MB in the end (delta: 5.3kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 766]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 80f1df6d4bc7961b41bec7d16d328ef23e1639399b1fb3a18bcdda9891a98148 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:51:14,423 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:51:14,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:51:14,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:51:14,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:51:14,494 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:51:14,496 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:51:14,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:51:14,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:51:14,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:51:14,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:51:14,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:51:14,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:51:14,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:51:14,515 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:51:14,522 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:51:14,524 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:51:14,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:51:14,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:51:14,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:51:14,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:51:14,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:51:14,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:51:14,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:51:14,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:51:14,554 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:51:14,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:51:14,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:51:14,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:51:14,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:51:14,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:51:14,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:51:14,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:51:14,563 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:51:14,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:51:14,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:51:14,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:51:14,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:51:14,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:51:14,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:51:14,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:51:14,591 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-20 05:51:14,634 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:51:14,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:51:14,635 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:51:14,635 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:51:14,636 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:51:14,636 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:51:14,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:51:14,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:51:14,638 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:51:14,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:51:14,640 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:51:14,640 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 05:51:14,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:51:14,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:51:14,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:51:14,641 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 05:51:14,641 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 05:51:14,641 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 05:51:14,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:51:14,642 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 05:51:14,642 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 05:51:14,642 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 05:51:14,642 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:51:14,642 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:51:14,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:51:14,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:51:14,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:51:14,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:51:14,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:51:14,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:51:14,644 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 05:51:14,644 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 05:51:14,645 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:51:14,645 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 05:51:14,645 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_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80f1df6d4bc7961b41bec7d16d328ef23e1639399b1fb3a18bcdda9891a98148 [2021-11-20 05:51:15,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:51:15,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:51:15,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:51:15,084 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:51:15,085 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:51:15,086 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i [2021-11-20 05:51:15,171 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/data/9a2c8897d/e05f95f9901244fe818a867dbdd73aa1/FLAG2251984b1 [2021-11-20 05:51:15,994 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:51:15,999 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i [2021-11-20 05:51:16,036 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/data/9a2c8897d/e05f95f9901244fe818a867dbdd73aa1/FLAG2251984b1 [2021-11-20 05:51:16,098 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/data/9a2c8897d/e05f95f9901244fe818a867dbdd73aa1 [2021-11-20 05:51:16,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:51:16,105 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:51:16,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:51:16,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:51:16,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:51:16,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:51:16" (1/1) ... [2021-11-20 05:51:16,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a124798 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:16, skipping insertion in model container [2021-11-20 05:51:16,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:51:16" (1/1) ... [2021-11-20 05:51:16,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:51:16,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:51:16,848 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i[33021,33034] [2021-11-20 05:51:17,012 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i[45234,45247] [2021-11-20 05:51:17,030 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:51:17,043 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-20 05:51:17,061 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:51:17,080 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i[33021,33034] [2021-11-20 05:51:17,196 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i[45234,45247] [2021-11-20 05:51:17,206 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:51:17,236 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:51:17,293 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i[33021,33034] [2021-11-20 05:51:17,372 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i[45234,45247] [2021-11-20 05:51:17,388 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:51:17,446 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:51:17,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:17 WrapperNode [2021-11-20 05:51:17,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:51:17,448 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:51:17,448 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:51:17,448 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:51:17,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:17" (1/1) ... [2021-11-20 05:51:17,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:17" (1/1) ... [2021-11-20 05:51:17,621 INFO L137 Inliner]: procedures = 180, calls = 348, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1175 [2021-11-20 05:51:17,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:51:17,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:51:17,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:51:17,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:51:17,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:17" (1/1) ... [2021-11-20 05:51:17,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:17" (1/1) ... [2021-11-20 05:51:17,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:17" (1/1) ... [2021-11-20 05:51:17,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:17" (1/1) ... [2021-11-20 05:51:17,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:17" (1/1) ... [2021-11-20 05:51:17,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:17" (1/1) ... [2021-11-20 05:51:17,761 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:17" (1/1) ... [2021-11-20 05:51:17,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:51:17,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:51:17,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:51:17,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:51:17,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:17" (1/1) ... [2021-11-20 05:51:17,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:51:17,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:51:17,821 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:51:17,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:51:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-20 05:51:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-20 05:51:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 05:51:17,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 05:51:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 05:51:17,864 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 05:51:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2021-11-20 05:51:17,864 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2021-11-20 05:51:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 05:51:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:51:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 05:51:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 05:51:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-20 05:51:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 05:51:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 05:51:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 05:51:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 05:51:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:51:17,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:51:18,082 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:51:18,084 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:51:18,089 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-20 05:51:24,062 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:51:24,077 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:51:24,077 INFO L301 CfgBuilder]: Removed 71 assume(true) statements. [2021-11-20 05:51:24,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:51:24 BoogieIcfgContainer [2021-11-20 05:51:24,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:51:24,083 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:51:24,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:51:24,086 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:51:24,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:51:16" (1/3) ... [2021-11-20 05:51:24,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681c97e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:51:24, skipping insertion in model container [2021-11-20 05:51:24,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:17" (2/3) ... [2021-11-20 05:51:24,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681c97e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:51:24, skipping insertion in model container [2021-11-20 05:51:24,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:51:24" (3/3) ... [2021-11-20 05:51:24,089 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test8-2.i [2021-11-20 05:51:24,095 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:51:24,095 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 641 error locations. [2021-11-20 05:51:24,140 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:51:24,147 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 05:51:24,147 INFO L340 AbstractCegarLoop]: Starting to check reachability of 641 error locations. [2021-11-20 05:51:24,192 INFO L276 IsEmpty]: Start isEmpty. Operand has 1296 states, 634 states have (on average 2.2539432176656153) internal successors, (1429), 1287 states have internal predecessors, (1429), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-20 05:51:24,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-20 05:51:24,199 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:24,199 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-20 05:51:24,200 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 637 more)] === [2021-11-20 05:51:24,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:24,211 INFO L85 PathProgramCache]: Analyzing trace with hash 132136, now seen corresponding path program 1 times [2021-11-20 05:51:24,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:24,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143612045] [2021-11-20 05:51:24,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:24,224 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:24,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:24,233 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:24,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 05:51:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:24,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 05:51:24,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:24,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:51:24,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:24,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:24,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:24,641 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:51:24,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143612045] [2021-11-20 05:51:24,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2143612045] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:51:24,643 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:51:24,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 05:51:24,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728119195] [2021-11-20 05:51:24,647 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:24,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:51:24,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:51:24,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:51:24,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:51:24,732 INFO L87 Difference]: Start difference. First operand has 1296 states, 634 states have (on average 2.2539432176656153) internal successors, (1429), 1287 states have internal predecessors, (1429), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:51:27,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:27,824 INFO L93 Difference]: Finished difference Result 1476 states and 1582 transitions. [2021-11-20 05:51:27,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:51:27,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-20 05:51:27,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:27,852 INFO L225 Difference]: With dead ends: 1476 [2021-11-20 05:51:27,852 INFO L226 Difference]: Without dead ends: 1474 [2021-11-20 05:51:27,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:51:27,858 INFO L933 BasicCegarLoop]: 817 mSDtfsCounter, 1162 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:27,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1166 Valid, 1048 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-20 05:51:27,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-11-20 05:51:27,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1285. [2021-11-20 05:51:27,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1285 states, 637 states have (on average 2.111459968602826) internal successors, (1345), 1275 states have internal predecessors, (1345), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-20 05:51:27,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 1387 transitions. [2021-11-20 05:51:27,972 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 1387 transitions. Word has length 3 [2021-11-20 05:51:27,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:27,972 INFO L470 AbstractCegarLoop]: Abstraction has 1285 states and 1387 transitions. [2021-11-20 05:51:27,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:51:27,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 1387 transitions. [2021-11-20 05:51:27,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-20 05:51:27,973 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:27,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-20 05:51:27,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:28,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:51:28,185 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 637 more)] === [2021-11-20 05:51:28,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:28,186 INFO L85 PathProgramCache]: Analyzing trace with hash 132137, now seen corresponding path program 1 times [2021-11-20 05:51:28,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:28,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [714497388] [2021-11-20 05:51:28,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:28,188 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:28,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:28,189 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:28,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 05:51:28,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:28,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:51:28,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:28,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:51:28,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:28,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:28,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:28,446 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:51:28,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [714497388] [2021-11-20 05:51:28,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [714497388] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:51:28,447 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:51:28,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-20 05:51:28,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339186599] [2021-11-20 05:51:28,448 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:28,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:51:28,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:51:28,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:51:28,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:51:28,450 INFO L87 Difference]: Start difference. First operand 1285 states and 1387 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:51:35,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:35,262 INFO L93 Difference]: Finished difference Result 1960 states and 2107 transitions. [2021-11-20 05:51:35,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:51:35,263 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-20 05:51:35,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:35,278 INFO L225 Difference]: With dead ends: 1960 [2021-11-20 05:51:35,278 INFO L226 Difference]: Without dead ends: 1960 [2021-11-20 05:51:35,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:51:35,281 INFO L933 BasicCegarLoop]: 946 mSDtfsCounter, 2187 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2190 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:35,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2190 Valid, 1740 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2021-11-20 05:51:35,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1960 states. [2021-11-20 05:51:35,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1960 to 1324. [2021-11-20 05:51:35,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1324 states, 684 states have (on average 2.0921052631578947) internal successors, (1431), 1313 states have internal predecessors, (1431), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-20 05:51:35,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 1475 transitions. [2021-11-20 05:51:35,375 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 1475 transitions. Word has length 3 [2021-11-20 05:51:35,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:35,376 INFO L470 AbstractCegarLoop]: Abstraction has 1324 states and 1475 transitions. [2021-11-20 05:51:35,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:51:35,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 1475 transitions. [2021-11-20 05:51:35,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 05:51:35,377 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:35,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:35,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:35,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:51:35,590 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 637 more)] === [2021-11-20 05:51:35,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:35,592 INFO L85 PathProgramCache]: Analyzing trace with hash -846217710, now seen corresponding path program 1 times [2021-11-20 05:51:35,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:35,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1023547575] [2021-11-20 05:51:35,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:35,594 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:35,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:35,595 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:35,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 05:51:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:35,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 05:51:35,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:35,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:51:35,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:35,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:35,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:35,844 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:51:35,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1023547575] [2021-11-20 05:51:35,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1023547575] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:51:35,845 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:51:35,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 05:51:35,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193030704] [2021-11-20 05:51:35,846 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:35,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:51:35,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:51:35,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:51:35,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:51:35,848 INFO L87 Difference]: Start difference. First operand 1324 states and 1475 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:51:38,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:38,868 INFO L93 Difference]: Finished difference Result 1649 states and 1822 transitions. [2021-11-20 05:51:38,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:51:38,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-20 05:51:38,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:38,881 INFO L225 Difference]: With dead ends: 1649 [2021-11-20 05:51:38,882 INFO L226 Difference]: Without dead ends: 1649 [2021-11-20 05:51:38,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:51:38,884 INFO L933 BasicCegarLoop]: 1206 mSDtfsCounter, 990 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:38,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [995 Valid, 1612 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-20 05:51:38,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2021-11-20 05:51:38,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1277. [2021-11-20 05:51:38,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 684 states have (on average 2.0160818713450293) internal successors, (1379), 1266 states have internal predecessors, (1379), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-20 05:51:38,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 1423 transitions. [2021-11-20 05:51:38,934 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 1423 transitions. Word has length 8 [2021-11-20 05:51:38,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:38,934 INFO L470 AbstractCegarLoop]: Abstraction has 1277 states and 1423 transitions. [2021-11-20 05:51:38,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:51:38,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 1423 transitions. [2021-11-20 05:51:38,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 05:51:38,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:38,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:38,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:39,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:51:39,149 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 637 more)] === [2021-11-20 05:51:39,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:39,151 INFO L85 PathProgramCache]: Analyzing trace with hash -846217709, now seen corresponding path program 1 times [2021-11-20 05:51:39,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:39,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [559591736] [2021-11-20 05:51:39,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:39,157 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:39,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:39,158 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:39,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 05:51:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:39,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:51:39,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:39,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:51:39,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:39,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:39,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:39,499 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:51:39,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [559591736] [2021-11-20 05:51:39,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [559591736] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:51:39,499 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:51:39,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-20 05:51:39,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317937704] [2021-11-20 05:51:39,501 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:39,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:51:39,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:51:39,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:51:39,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:51:39,503 INFO L87 Difference]: Start difference. First operand 1277 states and 1423 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:51:46,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:46,099 INFO L93 Difference]: Finished difference Result 1706 states and 1842 transitions. [2021-11-20 05:51:46,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:51:46,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-20 05:51:46,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:46,117 INFO L225 Difference]: With dead ends: 1706 [2021-11-20 05:51:46,117 INFO L226 Difference]: Without dead ends: 1706 [2021-11-20 05:51:46,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:51:46,119 INFO L933 BasicCegarLoop]: 1391 mSDtfsCounter, 727 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 2553 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:46,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [730 Valid, 2553 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1386 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2021-11-20 05:51:46,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2021-11-20 05:51:46,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1475. [2021-11-20 05:51:46,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1475 states, 891 states have (on average 2.005611672278339) internal successors, (1787), 1463 states have internal predecessors, (1787), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-20 05:51:46,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 1833 transitions. [2021-11-20 05:51:46,176 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 1833 transitions. Word has length 8 [2021-11-20 05:51:46,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:46,176 INFO L470 AbstractCegarLoop]: Abstraction has 1475 states and 1833 transitions. [2021-11-20 05:51:46,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:51:46,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 1833 transitions. [2021-11-20 05:51:46,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 05:51:46,178 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:46,178 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:46,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:46,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:51:46,391 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr534REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 637 more)] === [2021-11-20 05:51:46,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:46,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1255764539, now seen corresponding path program 1 times [2021-11-20 05:51:46,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:46,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [972611599] [2021-11-20 05:51:46,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:46,393 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:46,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:46,395 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:46,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 05:51:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:46,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:51:46,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:46,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:46,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:46,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:46,826 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:51:46,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [972611599] [2021-11-20 05:51:46,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [972611599] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:51:46,827 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:51:46,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 05:51:46,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798722399] [2021-11-20 05:51:46,828 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:46,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:51:46,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:51:46,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:51:46,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:51:46,830 INFO L87 Difference]: Start difference. First operand 1475 states and 1833 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:51:47,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:47,447 INFO L93 Difference]: Finished difference Result 2288 states and 2863 transitions. [2021-11-20 05:51:47,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:51:47,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-20 05:51:47,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:47,464 INFO L225 Difference]: With dead ends: 2288 [2021-11-20 05:51:47,465 INFO L226 Difference]: Without dead ends: 2288 [2021-11-20 05:51:47,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:51:47,467 INFO L933 BasicCegarLoop]: 1445 mSDtfsCounter, 748 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 2567 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:47,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [751 Valid, 2567 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 05:51:47,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2288 states. [2021-11-20 05:51:47,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2288 to 1871. [2021-11-20 05:51:47,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1871 states, 1285 states have (on average 1.9906614785992218) internal successors, (2558), 1857 states have internal predecessors, (2558), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-20 05:51:47,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1871 states to 1871 states and 2608 transitions. [2021-11-20 05:51:47,545 INFO L78 Accepts]: Start accepts. Automaton has 1871 states and 2608 transitions. Word has length 11 [2021-11-20 05:51:47,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:47,546 INFO L470 AbstractCegarLoop]: Abstraction has 1871 states and 2608 transitions. [2021-11-20 05:51:47,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:51:47,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1871 states and 2608 transitions. [2021-11-20 05:51:47,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 05:51:47,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:47,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:47,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:47,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:51:47,771 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr344REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 637 more)] === [2021-11-20 05:51:47,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:47,772 INFO L85 PathProgramCache]: Analyzing trace with hash -680989669, now seen corresponding path program 1 times [2021-11-20 05:51:47,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:47,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [531266025] [2021-11-20 05:51:47,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:47,773 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:47,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:47,774 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:47,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 05:51:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:47,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 05:51:47,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:47,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:47,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:48,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:48,035 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:51:48,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [531266025] [2021-11-20 05:51:48,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [531266025] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:51:48,036 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:51:48,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 05:51:48,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081125133] [2021-11-20 05:51:48,036 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:48,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:51:48,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:51:48,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:51:48,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:51:48,038 INFO L87 Difference]: Start difference. First operand 1871 states and 2608 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:51:48,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:48,088 INFO L93 Difference]: Finished difference Result 1994 states and 2668 transitions. [2021-11-20 05:51:48,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:51:48,089 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-20 05:51:48,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:48,105 INFO L225 Difference]: With dead ends: 1994 [2021-11-20 05:51:48,105 INFO L226 Difference]: Without dead ends: 1994 [2021-11-20 05:51:48,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:51:48,106 INFO L933 BasicCegarLoop]: 1464 mSDtfsCounter, 585 mSDsluCounter, 1784 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 3248 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:48,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [586 Valid, 3248 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:51:48,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2021-11-20 05:51:48,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1775. [2021-11-20 05:51:48,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1775 states, 1213 states have (on average 1.9670239076669416) internal successors, (2386), 1761 states have internal predecessors, (2386), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-20 05:51:48,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1775 states to 1775 states and 2436 transitions. [2021-11-20 05:51:48,187 INFO L78 Accepts]: Start accepts. Automaton has 1775 states and 2436 transitions. Word has length 13 [2021-11-20 05:51:48,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:48,187 INFO L470 AbstractCegarLoop]: Abstraction has 1775 states and 2436 transitions. [2021-11-20 05:51:48,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:51:48,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1775 states and 2436 transitions. [2021-11-20 05:51:48,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 05:51:48,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:48,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:48,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:48,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:51:48,403 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr639ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 637 more)] === [2021-11-20 05:51:48,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:48,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1323693751, now seen corresponding path program 1 times [2021-11-20 05:51:48,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:48,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [105210921] [2021-11-20 05:51:48,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:48,405 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:48,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:48,410 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:48,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 05:51:48,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:48,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:51:48,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:48,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:51:48,625 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:51:48,625 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:51:48,691 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-20 05:51:48,692 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 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-20 05:51:48,754 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-20 05:51:48,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-20 05:51:48,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:48,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:48,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:48,845 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:51:48,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [105210921] [2021-11-20 05:51:48,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [105210921] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:51:48,846 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:51:48,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 05:51:48,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004794508] [2021-11-20 05:51:48,846 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:48,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:51:48,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:51:48,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:51:48,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:51:48,848 INFO L87 Difference]: Start difference. First operand 1775 states and 2436 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:51:50,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:50,981 INFO L93 Difference]: Finished difference Result 2417 states and 3339 transitions. [2021-11-20 05:51:50,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:51:50,982 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-20 05:51:50,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:50,993 INFO L225 Difference]: With dead ends: 2417 [2021-11-20 05:51:50,993 INFO L226 Difference]: Without dead ends: 2417 [2021-11-20 05:51:50,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:51:50,994 INFO L933 BasicCegarLoop]: 1221 mSDtfsCounter, 461 mSDsluCounter, 4642 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 5863 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:50,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [462 Valid, 5863 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 05:51:50,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2417 states. [2021-11-20 05:51:51,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2417 to 1774. [2021-11-20 05:51:51,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1774 states, 1212 states have (on average 1.966996699669967) internal successors, (2384), 1760 states have internal predecessors, (2384), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-20 05:51:51,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1774 states to 1774 states and 2434 transitions. [2021-11-20 05:51:51,041 INFO L78 Accepts]: Start accepts. Automaton has 1774 states and 2434 transitions. Word has length 14 [2021-11-20 05:51:51,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:51,041 INFO L470 AbstractCegarLoop]: Abstraction has 1774 states and 2434 transitions. [2021-11-20 05:51:51,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:51:51,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1774 states and 2434 transitions. [2021-11-20 05:51:51,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 05:51:51,042 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:51,043 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:51,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-20 05:51:51,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:51:51,256 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 637 more)] === [2021-11-20 05:51:51,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:51,257 INFO L85 PathProgramCache]: Analyzing trace with hash -413650658, now seen corresponding path program 1 times [2021-11-20 05:51:51,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:51,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1200283722] [2021-11-20 05:51:51,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:51,258 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:51,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:51,259 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:51,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 05:51:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:51,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 05:51:51,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:51,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:51,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:51,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:51,555 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:51:51,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1200283722] [2021-11-20 05:51:51,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1200283722] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:51:51,555 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:51:51,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 05:51:51,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126304655] [2021-11-20 05:51:51,556 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:51,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:51:51,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:51:51,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:51:51,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:51:51,558 INFO L87 Difference]: Start difference. First operand 1774 states and 2434 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:51:51,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:51,630 INFO L93 Difference]: Finished difference Result 1714 states and 2348 transitions. [2021-11-20 05:51:51,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:51:51,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-20 05:51:51,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:51,643 INFO L225 Difference]: With dead ends: 1714 [2021-11-20 05:51:51,643 INFO L226 Difference]: Without dead ends: 1714 [2021-11-20 05:51:51,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:51:51,645 INFO L933 BasicCegarLoop]: 1221 mSDtfsCounter, 2266 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2271 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:51,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2271 Valid, 1313 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:51:51,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2021-11-20 05:51:51,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 1714. [2021-11-20 05:51:51,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1714 states, 1176 states have (on average 1.9540816326530612) internal successors, (2298), 1700 states have internal predecessors, (2298), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-20 05:51:51,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1714 states to 1714 states and 2348 transitions. [2021-11-20 05:51:51,702 INFO L78 Accepts]: Start accepts. Automaton has 1714 states and 2348 transitions. Word has length 18 [2021-11-20 05:51:51,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:51,703 INFO L470 AbstractCegarLoop]: Abstraction has 1714 states and 2348 transitions. [2021-11-20 05:51:51,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:51:51,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1714 states and 2348 transitions. [2021-11-20 05:51:51,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 05:51:51,705 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:51,705 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:51,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:51,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:51:51,926 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 637 more)] === [2021-11-20 05:51:51,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:51,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1913675577, now seen corresponding path program 1 times [2021-11-20 05:51:51,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:51,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471607064] [2021-11-20 05:51:51,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:51,928 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:51,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:51,929 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:51,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 05:51:52,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:52,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:51:52,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:52,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:52,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:52,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:52,236 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:51:52,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471607064] [2021-11-20 05:51:52,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [471607064] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:51:52,237 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:51:52,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-20 05:51:52,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894303019] [2021-11-20 05:51:52,237 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:52,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:51:52,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:51:52,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:51:52,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:51:52,239 INFO L87 Difference]: Start difference. First operand 1714 states and 2348 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:51:52,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:52,371 INFO L93 Difference]: Finished difference Result 1686 states and 2292 transitions. [2021-11-20 05:51:52,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:51:52,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-20 05:51:52,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:52,383 INFO L225 Difference]: With dead ends: 1686 [2021-11-20 05:51:52,384 INFO L226 Difference]: Without dead ends: 1686 [2021-11-20 05:51:52,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:51:52,385 INFO L933 BasicCegarLoop]: 1176 mSDtfsCounter, 1104 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 2529 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:52,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1109 Valid, 2529 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:51:52,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2021-11-20 05:51:52,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1684. [2021-11-20 05:51:52,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1160 states have (on average 1.9310344827586208) internal successors, (2240), 1670 states have internal predecessors, (2240), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-20 05:51:52,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2290 transitions. [2021-11-20 05:51:52,436 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2290 transitions. Word has length 20 [2021-11-20 05:51:52,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:52,436 INFO L470 AbstractCegarLoop]: Abstraction has 1684 states and 2290 transitions. [2021-11-20 05:51:52,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:51:52,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2290 transitions. [2021-11-20 05:51:52,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-20 05:51:52,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:52,439 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:52,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:52,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:51:52,653 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 637 more)] === [2021-11-20 05:51:52,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:52,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1224753126, now seen corresponding path program 1 times [2021-11-20 05:51:52,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:52,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405015106] [2021-11-20 05:51:52,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:52,655 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:52,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:52,656 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:52,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 05:51:52,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:52,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:51:52,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:52,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:51:53,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:53,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:53,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:53,182 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:51:53,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1405015106] [2021-11-20 05:51:53,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1405015106] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:51:53,183 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:51:53,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 05:51:53,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615829522] [2021-11-20 05:51:53,183 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:53,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:51:53,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:51:53,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:51:53,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:51:53,185 INFO L87 Difference]: Start difference. First operand 1684 states and 2290 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:51:56,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:56,051 INFO L93 Difference]: Finished difference Result 2545 states and 3556 transitions. [2021-11-20 05:51:56,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:51:56,053 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-20 05:51:56,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:56,067 INFO L225 Difference]: With dead ends: 2545 [2021-11-20 05:51:56,068 INFO L226 Difference]: Without dead ends: 2545 [2021-11-20 05:51:56,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:51:56,069 INFO L933 BasicCegarLoop]: 665 mSDtfsCounter, 2170 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2172 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:56,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2172 Valid, 1294 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-20 05:51:56,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2545 states. [2021-11-20 05:51:56,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2545 to 1680. [2021-11-20 05:51:56,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1680 states, 1160 states have (on average 1.9241379310344828) internal successors, (2232), 1666 states have internal predecessors, (2232), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-20 05:51:56,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 2282 transitions. [2021-11-20 05:51:56,125 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 2282 transitions. Word has length 34 [2021-11-20 05:51:56,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:56,126 INFO L470 AbstractCegarLoop]: Abstraction has 1680 states and 2282 transitions. [2021-11-20 05:51:56,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:51:56,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 2282 transitions. [2021-11-20 05:51:56,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-20 05:51:56,129 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:56,129 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:56,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:56,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:51:56,344 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 637 more)] === [2021-11-20 05:51:56,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:56,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1224753127, now seen corresponding path program 1 times [2021-11-20 05:51:56,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:56,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [233809528] [2021-11-20 05:51:56,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:56,345 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:56,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:56,346 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:56,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 05:51:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:56,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:51:56,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:56,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:51:56,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:56,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:57,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:57,520 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:51:57,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [233809528] [2021-11-20 05:51:57,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [233809528] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:51:57,521 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:51:57,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 05:51:57,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363445518] [2021-11-20 05:51:57,521 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:57,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:51:57,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:51:57,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:51:57,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:51:57,523 INFO L87 Difference]: Start difference. First operand 1680 states and 2282 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:07,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:07,960 INFO L93 Difference]: Finished difference Result 2098 states and 2508 transitions. [2021-11-20 05:52:07,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:52:07,963 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-20 05:52:07,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:07,976 INFO L225 Difference]: With dead ends: 2098 [2021-11-20 05:52:07,976 INFO L226 Difference]: Without dead ends: 2098 [2021-11-20 05:52:07,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:52:07,990 INFO L933 BasicCegarLoop]: 1497 mSDtfsCounter, 2684 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 1513 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2684 SdHoareTripleChecker+Valid, 2761 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:07,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2684 Valid, 2761 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1513 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2021-11-20 05:52:07,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2098 states. [2021-11-20 05:52:08,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2098 to 1676. [2021-11-20 05:52:08,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1676 states, 1160 states have (on average 1.9172413793103449) internal successors, (2224), 1662 states have internal predecessors, (2224), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-20 05:52:08,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 2274 transitions. [2021-11-20 05:52:08,036 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 2274 transitions. Word has length 34 [2021-11-20 05:52:08,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:08,037 INFO L470 AbstractCegarLoop]: Abstraction has 1676 states and 2274 transitions. [2021-11-20 05:52:08,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:08,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 2274 transitions. [2021-11-20 05:52:08,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-20 05:52:08,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:08,040 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:08,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:08,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:08,255 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 637 more)] === [2021-11-20 05:52:08,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:08,256 INFO L85 PathProgramCache]: Analyzing trace with hash -515146363, now seen corresponding path program 1 times [2021-11-20 05:52:08,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:08,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1664941122] [2021-11-20 05:52:08,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:08,257 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:08,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:08,258 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:08,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 05:52:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:08,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:52:08,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:08,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:08,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:08,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:08,836 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:08,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1664941122] [2021-11-20 05:52:08,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1664941122] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:08,837 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:08,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 05:52:08,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512107237] [2021-11-20 05:52:08,838 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:08,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:52:08,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:08,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:52:08,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:52:08,840 INFO L87 Difference]: Start difference. First operand 1676 states and 2274 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:08,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:08,918 INFO L93 Difference]: Finished difference Result 1664 states and 2254 transitions. [2021-11-20 05:52:08,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:52:08,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-20 05:52:08,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:08,930 INFO L225 Difference]: With dead ends: 1664 [2021-11-20 05:52:08,931 INFO L226 Difference]: Without dead ends: 1664 [2021-11-20 05:52:08,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:52:08,932 INFO L933 BasicCegarLoop]: 1170 mSDtfsCounter, 1080 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 2415 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:08,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1085 Valid, 2415 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:52:08,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2021-11-20 05:52:08,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1664. [2021-11-20 05:52:08,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1664 states, 1148 states have (on average 1.9198606271777003) internal successors, (2204), 1650 states have internal predecessors, (2204), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-20 05:52:08,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2254 transitions. [2021-11-20 05:52:08,981 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2254 transitions. Word has length 52 [2021-11-20 05:52:08,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:08,984 INFO L470 AbstractCegarLoop]: Abstraction has 1664 states and 2254 transitions. [2021-11-20 05:52:08,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:08,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2254 transitions. [2021-11-20 05:52:08,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-20 05:52:08,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:08,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:09,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:09,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:09,209 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 637 more)] === [2021-11-20 05:52:09,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:09,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1189287633, now seen corresponding path program 1 times [2021-11-20 05:52:09,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:09,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235524385] [2021-11-20 05:52:09,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:09,212 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:09,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:09,214 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:09,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-20 05:52:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:09,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 05:52:09,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:09,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:52:09,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:52:10,620 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 05:52:10,620 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 26 treesize of output 28 [2021-11-20 05:52:10,644 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 05:52:10,645 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 25 treesize of output 21 [2021-11-20 05:52:10,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:10,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:12,902 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc36#1.base_9| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc36#1.base_9|))) (let ((.cse0 (bvadd |c_ULTIMATE.start_main_~user~0#1.offset| (_ bv12 32)))) (and (bvule (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|) .cse0) (bvule .cse0 (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc36#1.base_9| (_ bv44 32)) |c_ULTIMATE.start_main_~user~0#1.base|)))))) is different from false [2021-11-20 05:52:16,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:16,449 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:16,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235524385] [2021-11-20 05:52:16,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1235524385] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:16,450 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:16,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 05:52:16,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337299800] [2021-11-20 05:52:16,451 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:16,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:52:16,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:16,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:52:16,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=12, Unknown=1, NotChecked=6, Total=30 [2021-11-20 05:52:16,453 INFO L87 Difference]: Start difference. First operand 1664 states and 2254 transitions. Second operand has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 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) [2021-11-20 05:52:23,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:23,368 INFO L93 Difference]: Finished difference Result 2227 states and 2909 transitions. [2021-11-20 05:52:23,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:52:23,369 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 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) Word has length 60 [2021-11-20 05:52:23,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:23,380 INFO L225 Difference]: With dead ends: 2227 [2021-11-20 05:52:23,381 INFO L226 Difference]: Without dead ends: 2227 [2021-11-20 05:52:23,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=16, Invalid=17, Unknown=1, NotChecked=8, Total=42 [2021-11-20 05:52:23,382 INFO L933 BasicCegarLoop]: 939 mSDtfsCounter, 1463 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 2263 SdHoareTripleChecker+Invalid, 4034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2526 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:23,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1470 Valid, 2263 Invalid, 4034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1461 Invalid, 0 Unknown, 2526 Unchecked, 6.8s Time] [2021-11-20 05:52:23,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2227 states. [2021-11-20 05:52:23,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2227 to 1312. [2021-11-20 05:52:23,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 832 states have (on average 1.8461538461538463) internal successors, (1536), 1300 states have internal predecessors, (1536), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-20 05:52:23,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1582 transitions. [2021-11-20 05:52:23,423 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1582 transitions. Word has length 60 [2021-11-20 05:52:23,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:23,424 INFO L470 AbstractCegarLoop]: Abstraction has 1312 states and 1582 transitions. [2021-11-20 05:52:23,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 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) [2021-11-20 05:52:23,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1582 transitions. [2021-11-20 05:52:23,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-20 05:52:23,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:23,426 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:23,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:23,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:23,643 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 637 more)] === [2021-11-20 05:52:23,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:23,644 INFO L85 PathProgramCache]: Analyzing trace with hash 444125234, now seen corresponding path program 1 times [2021-11-20 05:52:23,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:23,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1871318172] [2021-11-20 05:52:23,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:23,645 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:23,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:23,646 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:23,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-20 05:52:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:23,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:52:23,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:24,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:24,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:24,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-20 05:52:24,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:24,733 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:24,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1871318172] [2021-11-20 05:52:24,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1871318172] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:24,733 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:24,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 05:52:24,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152919875] [2021-11-20 05:52:24,734 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:24,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:52:24,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:24,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:52:24,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:52:24,735 INFO L87 Difference]: Start difference. First operand 1312 states and 1582 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:26,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:26,593 INFO L93 Difference]: Finished difference Result 1310 states and 1580 transitions. [2021-11-20 05:52:26,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:52:26,594 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 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 62 [2021-11-20 05:52:26,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:26,599 INFO L225 Difference]: With dead ends: 1310 [2021-11-20 05:52:26,600 INFO L226 Difference]: Without dead ends: 1310 [2021-11-20 05:52:26,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:52:26,601 INFO L933 BasicCegarLoop]: 743 mSDtfsCounter, 1604 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1609 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:26,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1609 Valid, 1317 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-20 05:52:26,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2021-11-20 05:52:26,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1310. [2021-11-20 05:52:26,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 832 states have (on average 1.84375) internal successors, (1534), 1298 states have internal predecessors, (1534), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-20 05:52:26,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 1580 transitions. [2021-11-20 05:52:26,632 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 1580 transitions. Word has length 62 [2021-11-20 05:52:26,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:26,633 INFO L470 AbstractCegarLoop]: Abstraction has 1310 states and 1580 transitions. [2021-11-20 05:52:26,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:26,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 1580 transitions. [2021-11-20 05:52:26,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-20 05:52:26,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:26,634 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:26,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:26,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:26,851 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 637 more)] === [2021-11-20 05:52:26,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:26,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1859054235, now seen corresponding path program 1 times [2021-11-20 05:52:26,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:26,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [51978834] [2021-11-20 05:52:26,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:26,853 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:26,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:26,853 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:26,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-20 05:52:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:27,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:52:27,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:27,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:52:27,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-20 05:52:27,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-20 05:52:27,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:27,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:27,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:27,287 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:27,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [51978834] [2021-11-20 05:52:27,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [51978834] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:27,288 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:27,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 05:52:27,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276302999] [2021-11-20 05:52:27,288 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:27,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:52:27,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:27,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:52:27,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:52:27,290 INFO L87 Difference]: Start difference. First operand 1310 states and 1580 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:30,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:30,458 INFO L93 Difference]: Finished difference Result 1309 states and 1579 transitions. [2021-11-20 05:52:30,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:52:30,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-20 05:52:30,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:30,464 INFO L225 Difference]: With dead ends: 1309 [2021-11-20 05:52:30,464 INFO L226 Difference]: Without dead ends: 1309 [2021-11-20 05:52:30,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:52:30,465 INFO L933 BasicCegarLoop]: 1132 mSDtfsCounter, 4 mSDsluCounter, 1845 mSDsCounter, 0 mSdLazyCounter, 1556 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2977 SdHoareTripleChecker+Invalid, 1557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:30,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2977 Invalid, 1557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1556 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-20 05:52:30,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2021-11-20 05:52:30,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1309. [2021-11-20 05:52:30,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1309 states, 832 states have (on average 1.8425480769230769) internal successors, (1533), 1297 states have internal predecessors, (1533), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-20 05:52:30,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 1579 transitions. [2021-11-20 05:52:30,490 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 1579 transitions. Word has length 65 [2021-11-20 05:52:30,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:30,490 INFO L470 AbstractCegarLoop]: Abstraction has 1309 states and 1579 transitions. [2021-11-20 05:52:30,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:30,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 1579 transitions. [2021-11-20 05:52:30,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-20 05:52:30,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:30,491 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:30,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:30,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:30,705 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 637 more)] === [2021-11-20 05:52:30,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:30,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1859054234, now seen corresponding path program 1 times [2021-11-20 05:52:30,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:30,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712225229] [2021-11-20 05:52:30,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:30,706 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:30,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:30,708 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:30,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-20 05:52:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:30,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:52:30,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:31,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:52:31,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-20 05:52:31,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 05:52:31,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-20 05:52:31,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-20 05:52:31,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:31,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:31,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:31,467 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:31,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712225229] [2021-11-20 05:52:31,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712225229] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:31,467 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:31,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-20 05:52:31,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61160432] [2021-11-20 05:52:31,468 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:31,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 05:52:31,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:31,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 05:52:31,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:52:31,469 INFO L87 Difference]: Start difference. First operand 1309 states and 1579 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:41,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:41,903 INFO L93 Difference]: Finished difference Result 1308 states and 1578 transitions. [2021-11-20 05:52:41,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:52:41,905 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-20 05:52:41,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:41,909 INFO L225 Difference]: With dead ends: 1308 [2021-11-20 05:52:41,909 INFO L226 Difference]: Without dead ends: 1308 [2021-11-20 05:52:41,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:52:41,910 INFO L933 BasicCegarLoop]: 1132 mSDtfsCounter, 2 mSDsluCounter, 3784 mSDsCounter, 0 mSdLazyCounter, 3011 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4916 SdHoareTripleChecker+Invalid, 3012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:41,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 4916 Invalid, 3012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3011 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2021-11-20 05:52:41,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2021-11-20 05:52:41,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 1308. [2021-11-20 05:52:41,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1308 states, 831 states have (on average 1.8435619735258724) internal successors, (1532), 1296 states have internal predecessors, (1532), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-20 05:52:41,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1308 states to 1308 states and 1578 transitions. [2021-11-20 05:52:41,934 INFO L78 Accepts]: Start accepts. Automaton has 1308 states and 1578 transitions. Word has length 65 [2021-11-20 05:52:41,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:41,935 INFO L470 AbstractCegarLoop]: Abstraction has 1308 states and 1578 transitions. [2021-11-20 05:52:41,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:41,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1308 states and 1578 transitions. [2021-11-20 05:52:41,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-20 05:52:41,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:41,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:41,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:42,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:42,158 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 637 more)] === [2021-11-20 05:52:42,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:42,158 INFO L85 PathProgramCache]: Analyzing trace with hash 827014060, now seen corresponding path program 1 times [2021-11-20 05:52:42,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:42,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [91363842] [2021-11-20 05:52:42,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:42,159 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:42,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:42,160 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:42,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-20 05:52:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:42,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:52:42,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:42,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:42,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:42,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:42,675 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:42,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [91363842] [2021-11-20 05:52:42,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [91363842] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:42,675 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:42,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 05:52:42,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26548984] [2021-11-20 05:52:42,676 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:42,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:52:42,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:42,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:52:42,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:52:42,678 INFO L87 Difference]: Start difference. First operand 1308 states and 1578 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:52:42,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:42,803 INFO L93 Difference]: Finished difference Result 1318 states and 1591 transitions. [2021-11-20 05:52:42,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:52:42,804 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 73 [2021-11-20 05:52:42,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:42,812 INFO L225 Difference]: With dead ends: 1318 [2021-11-20 05:52:42,812 INFO L226 Difference]: Without dead ends: 1318 [2021-11-20 05:52:42,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:52:42,814 INFO L933 BasicCegarLoop]: 1132 mSDtfsCounter, 7 mSDsluCounter, 3385 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4517 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:42,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 4517 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:52:42,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2021-11-20 05:52:42,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1318. [2021-11-20 05:52:42,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1318 states, 839 states have (on average 1.840286054827175) internal successors, (1544), 1305 states have internal predecessors, (1544), 23 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (24), 9 states have call predecessors, (24), 23 states have call successors, (24) [2021-11-20 05:52:42,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 1591 transitions. [2021-11-20 05:52:42,877 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 1591 transitions. Word has length 73 [2021-11-20 05:52:42,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:42,877 INFO L470 AbstractCegarLoop]: Abstraction has 1318 states and 1591 transitions. [2021-11-20 05:52:42,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:52:42,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 1591 transitions. [2021-11-20 05:52:42,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-20 05:52:42,879 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:42,880 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:42,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:43,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:43,080 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 637 more)] === [2021-11-20 05:52:43,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:43,081 INFO L85 PathProgramCache]: Analyzing trace with hash -856717428, now seen corresponding path program 1 times [2021-11-20 05:52:43,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:43,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [257441423] [2021-11-20 05:52:43,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:43,082 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:43,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:43,082 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:43,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-20 05:52:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:43,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:52:43,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:43,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:43,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:43,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:43,747 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:43,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [257441423] [2021-11-20 05:52:43,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [257441423] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:52:43,747 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:52:43,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-20 05:52:43,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276262470] [2021-11-20 05:52:43,749 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:52:43,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 05:52:43,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:43,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 05:52:43,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:52:43,751 INFO L87 Difference]: Start difference. First operand 1318 states and 1591 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:52:44,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:44,087 INFO L93 Difference]: Finished difference Result 1332 states and 1609 transitions. [2021-11-20 05:52:44,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 05:52:44,088 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 75 [2021-11-20 05:52:44,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:44,092 INFO L225 Difference]: With dead ends: 1332 [2021-11-20 05:52:44,092 INFO L226 Difference]: Without dead ends: 1328 [2021-11-20 05:52:44,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-20 05:52:44,093 INFO L933 BasicCegarLoop]: 1134 mSDtfsCounter, 34 mSDsluCounter, 3393 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 4527 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:44,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 4527 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:52:44,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2021-11-20 05:52:44,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 1324. [2021-11-20 05:52:44,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1324 states, 845 states have (on average 1.8366863905325443) internal successors, (1552), 1311 states have internal predecessors, (1552), 23 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (24), 9 states have call predecessors, (24), 23 states have call successors, (24) [2021-11-20 05:52:44,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 1599 transitions. [2021-11-20 05:52:44,117 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 1599 transitions. Word has length 75 [2021-11-20 05:52:44,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:44,118 INFO L470 AbstractCegarLoop]: Abstraction has 1324 states and 1599 transitions. [2021-11-20 05:52:44,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:52:44,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 1599 transitions. [2021-11-20 05:52:44,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-20 05:52:44,123 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:44,123 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:44,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:44,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:44,337 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 637 more)] === [2021-11-20 05:52:44,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:44,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1737209676, now seen corresponding path program 2 times [2021-11-20 05:52:44,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:44,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798839359] [2021-11-20 05:52:44,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:52:44,338 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:44,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:44,339 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:44,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-20 05:52:44,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 05:52:44,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:52:44,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 05:52:44,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:44,946 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:44,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:45,423 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:45,424 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:45,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798839359] [2021-11-20 05:52:45,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798839359] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:52:45,424 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:52:45,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-20 05:52:45,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807628794] [2021-11-20 05:52:45,425 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:52:45,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 05:52:45,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:45,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 05:52:45,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-20 05:52:45,427 INFO L87 Difference]: Start difference. First operand 1324 states and 1599 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:52:46,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:46,785 INFO L93 Difference]: Finished difference Result 1352 states and 1637 transitions. [2021-11-20 05:52:46,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-20 05:52:46,785 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 79 [2021-11-20 05:52:46,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:46,789 INFO L225 Difference]: With dead ends: 1352 [2021-11-20 05:52:46,789 INFO L226 Difference]: Without dead ends: 1348 [2021-11-20 05:52:46,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-20 05:52:46,791 INFO L933 BasicCegarLoop]: 1138 mSDtfsCounter, 77 mSDsluCounter, 7941 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 9079 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:46,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 9079 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 05:52:46,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2021-11-20 05:52:46,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 1336. [2021-11-20 05:52:46,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1336 states, 857 states have (on average 1.8296382730455076) internal successors, (1568), 1323 states have internal predecessors, (1568), 23 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (24), 9 states have call predecessors, (24), 23 states have call successors, (24) [2021-11-20 05:52:46,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 1615 transitions. [2021-11-20 05:52:46,813 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 1615 transitions. Word has length 79 [2021-11-20 05:52:46,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:46,814 INFO L470 AbstractCegarLoop]: Abstraction has 1336 states and 1615 transitions. [2021-11-20 05:52:46,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:52:46,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 1615 transitions. [2021-11-20 05:52:46,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-20 05:52:46,815 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:46,815 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:46,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:47,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:47,029 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 637 more)] === [2021-11-20 05:52:47,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:47,030 INFO L85 PathProgramCache]: Analyzing trace with hash -145066292, now seen corresponding path program 3 times [2021-11-20 05:52:47,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:47,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [606720040] [2021-11-20 05:52:47,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 05:52:47,031 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:47,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:47,032 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:47,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-20 05:52:47,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-20 05:52:47,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:52:47,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 05:52:47,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:48,232 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:48,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:49,838 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:49,838 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:49,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [606720040] [2021-11-20 05:52:49,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [606720040] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:52:49,839 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:52:49,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-20 05:52:49,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375606078] [2021-11-20 05:52:49,839 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:52:49,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-20 05:52:49,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:49,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-20 05:52:49,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-20 05:52:49,841 INFO L87 Difference]: Start difference. First operand 1336 states and 1615 transitions. Second operand has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:52:57,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:57,741 INFO L93 Difference]: Finished difference Result 1392 states and 1699 transitions. [2021-11-20 05:52:57,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-20 05:52:57,742 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 87 [2021-11-20 05:52:57,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:57,745 INFO L225 Difference]: With dead ends: 1392 [2021-11-20 05:52:57,745 INFO L226 Difference]: Without dead ends: 1386 [2021-11-20 05:52:57,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-20 05:52:57,748 INFO L933 BasicCegarLoop]: 1145 mSDtfsCounter, 206 mSDsluCounter, 19366 mSDsCounter, 0 mSdLazyCounter, 1276 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 20511 SdHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:57,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 20511 Invalid, 1451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1276 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-20 05:52:57,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2021-11-20 05:52:57,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1360. [2021-11-20 05:52:57,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 881 states have (on average 1.814982973893303) internal successors, (1599), 1347 states have internal predecessors, (1599), 23 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (24), 9 states have call predecessors, (24), 23 states have call successors, (24) [2021-11-20 05:52:57,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1646 transitions. [2021-11-20 05:52:57,773 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1646 transitions. Word has length 87 [2021-11-20 05:52:57,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:57,773 INFO L470 AbstractCegarLoop]: Abstraction has 1360 states and 1646 transitions. [2021-11-20 05:52:57,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:52:57,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1646 transitions. [2021-11-20 05:52:57,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-20 05:52:57,775 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:57,775 INFO L514 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:57,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:57,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:57,994 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 637 more)] === [2021-11-20 05:52:57,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:57,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1334932940, now seen corresponding path program 4 times [2021-11-20 05:52:57,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:57,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1977751074] [2021-11-20 05:52:57,996 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 05:52:57,996 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:57,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:57,997 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:58,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-20 05:52:58,312 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 05:52:58,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:52:58,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-20 05:52:58,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:59,453 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:59,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:53:03,302 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:03,302 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:53:03,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1977751074] [2021-11-20 05:53:03,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1977751074] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:53:03,302 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:53:03,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-20 05:53:03,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794188188] [2021-11-20 05:53:03,303 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:53:03,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-20 05:53:03,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:53:03,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-20 05:53:03,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-20 05:53:03,306 INFO L87 Difference]: Start difference. First operand 1360 states and 1646 transitions. Second operand has 66 states, 66 states have (on average 2.0303030303030303) internal successors, (134), 66 states have internal predecessors, (134), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:53:16,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:16,708 INFO L93 Difference]: Finished difference Result 1452 states and 1766 transitions. [2021-11-20 05:53:16,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-20 05:53:16,709 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0303030303030303) internal successors, (134), 66 states have internal predecessors, (134), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 103 [2021-11-20 05:53:16,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:16,712 INFO L225 Difference]: With dead ends: 1452 [2021-11-20 05:53:16,713 INFO L226 Difference]: Without dead ends: 1448 [2021-11-20 05:53:16,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-20 05:53:16,720 INFO L933 BasicCegarLoop]: 1161 mSDtfsCounter, 288 mSDsluCounter, 36999 mSDsCounter, 0 mSdLazyCounter, 4039 mSolverCounterSat, 513 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 38160 SdHoareTripleChecker+Invalid, 4552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 513 IncrementalHoareTripleChecker+Valid, 4039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:16,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 38160 Invalid, 4552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [513 Valid, 4039 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2021-11-20 05:53:16,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2021-11-20 05:53:16,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1390. [2021-11-20 05:53:16,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 911 states have (on average 1.8057080131723382) internal successors, (1645), 1377 states have internal predecessors, (1645), 23 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (24), 9 states have call predecessors, (24), 23 states have call successors, (24) [2021-11-20 05:53:16,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 1692 transitions. [2021-11-20 05:53:16,748 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 1692 transitions. Word has length 103 [2021-11-20 05:53:16,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:16,748 INFO L470 AbstractCegarLoop]: Abstraction has 1390 states and 1692 transitions. [2021-11-20 05:53:16,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0303030303030303) internal successors, (134), 66 states have internal predecessors, (134), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:53:16,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 1692 transitions. [2021-11-20 05:53:16,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-20 05:53:16,750 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:16,750 INFO L514 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:16,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:16,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:53:16,970 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 637 more)] === [2021-11-20 05:53:16,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:16,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1801422612, now seen corresponding path program 5 times [2021-11-20 05:53:16,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:53:16,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [953811767] [2021-11-20 05:53:16,971 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-20 05:53:16,972 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:53:16,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:53:16,973 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:53:16,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e867b7d5-3325-4010-bc7c-b2b367cf56be/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-20 05:53:17,967 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-20 05:53:17,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:53:17,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-20 05:53:18,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:18,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:53:18,247 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 05:53:18,248 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 19 treesize of output 26 [2021-11-20 05:53:18,292 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 26 treesize of output 22 [2021-11-20 05:53:18,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22