./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-memsafety/list1.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_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/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_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-memsafety/list1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/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_a141e982-15e4-4bb5-9877-a0e3d809cdf0/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 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:32:59,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:32:59,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:32:59,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:32:59,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:32:59,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:32:59,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:32:59,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:32:59,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:32:59,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:32:59,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:32:59,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:32:59,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:32:59,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:32:59,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:32:59,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:32:59,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:32:59,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:32:59,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:32:59,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:32:59,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:32:59,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:32:59,629 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:32:59,630 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:32:59,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:32:59,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:32:59,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:32:59,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:32:59,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:32:59,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:32:59,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:32:59,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:32:59,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:32:59,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:32:59,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:32:59,648 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:32:59,649 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:32:59,649 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:32:59,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:32:59,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:32:59,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:32:59,652 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-20 06:32:59,688 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:32:59,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:32:59,692 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:32:59,692 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:32:59,699 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:32:59,699 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:32:59,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:32:59,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:32:59,700 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:32:59,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:32:59,702 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:32:59,702 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 06:32:59,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:32:59,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:32:59,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:32:59,702 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 06:32:59,703 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 06:32:59,703 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 06:32:59,703 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:32:59,705 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 06:32:59,705 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:32:59,709 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:32:59,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:32:59,709 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:32:59,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:32:59,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:32:59,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:32:59,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:32:59,710 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:32:59,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:32:59,711 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:32:59,711 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_a141e982-15e4-4bb5-9877-a0e3d809cdf0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 [2021-11-20 06:32:59,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:32:59,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:32:59,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:32:59,983 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:32:59,983 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:32:59,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/pthread-memsafety/list1.i [2021-11-20 06:33:00,078 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/data/c998d4b69/a9452143adfb4c4f9db76f0a20ffbea0/FLAG797efa128 [2021-11-20 06:33:00,640 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:33:00,640 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/sv-benchmarks/c/pthread-memsafety/list1.i [2021-11-20 06:33:00,663 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/data/c998d4b69/a9452143adfb4c4f9db76f0a20ffbea0/FLAG797efa128 [2021-11-20 06:33:00,892 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/data/c998d4b69/a9452143adfb4c4f9db76f0a20ffbea0 [2021-11-20 06:33:00,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:33:00,896 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:33:00,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:33:00,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:33:00,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:33:00,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:33:00" (1/1) ... [2021-11-20 06:33:00,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ece95d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:33:00, skipping insertion in model container [2021-11-20 06:33:00,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:33:00" (1/1) ... [2021-11-20 06:33:00,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:33:00,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:33:01,437 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:33:01,447 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 06:33:01,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@ed5b6a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:33:01, skipping insertion in model container [2021-11-20 06:33:01,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:33:01,450 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-20 06:33:01,452 INFO L158 Benchmark]: Toolchain (without parser) took 554.42ms. Allocated memory is still 88.1MB. Free memory was 65.9MB in the beginning and 60.7MB in the end (delta: 5.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 06:33:01,453 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 88.1MB. Free memory was 64.1MB in the beginning and 64.1MB in the end (delta: 47.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:33:01,455 INFO L158 Benchmark]: CACSL2BoogieTranslator took 552.32ms. Allocated memory is still 88.1MB. Free memory was 65.5MB in the beginning and 60.7MB in the end (delta: 4.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 06:33:01,457 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 88.1MB. Free memory was 64.1MB in the beginning and 64.1MB in the end (delta: 47.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 552.32ms. Allocated memory is still 88.1MB. Free memory was 65.5MB in the beginning and 60.7MB in the end (delta: 4.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1048]: 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_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/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_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-memsafety/list1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/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_a141e982-15e4-4bb5-9877-a0e3d809cdf0/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 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:33:03,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:33:03,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:33:03,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:33:03,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:33:03,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:33:03,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:33:03,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:33:03,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:33:03,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:33:03,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:33:03,661 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:33:03,661 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:33:03,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:33:03,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:33:03,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:33:03,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:33:03,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:33:03,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:33:03,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:33:03,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:33:03,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:33:03,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:33:03,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:33:03,681 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:33:03,681 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:33:03,682 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:33:03,683 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:33:03,683 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:33:03,684 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:33:03,685 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:33:03,686 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:33:03,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:33:03,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:33:03,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:33:03,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:33:03,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:33:03,691 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:33:03,704 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:33:03,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:33:03,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:33:03,707 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-20 06:33:03,734 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:33:03,735 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:33:03,735 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:33:03,736 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:33:03,736 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:33:03,737 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:33:03,737 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:33:03,738 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:33:03,738 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:33:03,738 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:33:03,739 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:33:03,739 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 06:33:03,739 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:33:03,740 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:33:03,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:33:03,740 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 06:33:03,741 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 06:33:03,741 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 06:33:03,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:33:03,741 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 06:33:03,742 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 06:33:03,742 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 06:33:03,742 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:33:03,743 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:33:03,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:33:03,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:33:03,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:33:03,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:33:03,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:33:03,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:33:03,745 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 06:33:03,745 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 06:33:03,745 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:33:03,746 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 06:33:03,746 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_a141e982-15e4-4bb5-9877-a0e3d809cdf0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 [2021-11-20 06:33:04,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:33:04,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:33:04,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:33:04,143 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:33:04,144 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:33:04,145 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/pthread-memsafety/list1.i [2021-11-20 06:33:04,209 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/data/a159d4456/e24ba50362124073a836ae931afd7fdb/FLAGe8e145c2d [2021-11-20 06:33:04,828 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:33:04,828 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/sv-benchmarks/c/pthread-memsafety/list1.i [2021-11-20 06:33:04,852 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/data/a159d4456/e24ba50362124073a836ae931afd7fdb/FLAGe8e145c2d [2021-11-20 06:33:05,090 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/data/a159d4456/e24ba50362124073a836ae931afd7fdb [2021-11-20 06:33:05,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:33:05,094 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:33:05,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:33:05,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:33:05,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:33:05,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:33:05" (1/1) ... [2021-11-20 06:33:05,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@113e805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:33:05, skipping insertion in model container [2021-11-20 06:33:05,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:33:05" (1/1) ... [2021-11-20 06:33:05,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:33:05,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:33:05,706 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:33:05,722 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-20 06:33:05,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:33:05,797 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:33:05,806 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:33:05,863 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:33:05,966 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:33:05,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:33:05 WrapperNode [2021-11-20 06:33:05,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:33:05,967 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:33:05,968 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:33:05,968 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:33:05,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:33:05" (1/1) ... [2021-11-20 06:33:05,996 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:33:05" (1/1) ... [2021-11-20 06:33:06,019 INFO L137 Inliner]: procedures = 267, calls = 33, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 74 [2021-11-20 06:33:06,020 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:33:06,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:33:06,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:33:06,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:33:06,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:33:05" (1/1) ... [2021-11-20 06:33:06,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:33:05" (1/1) ... [2021-11-20 06:33:06,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:33:05" (1/1) ... [2021-11-20 06:33:06,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:33:05" (1/1) ... [2021-11-20 06:33:06,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:33:05" (1/1) ... [2021-11-20 06:33:06,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:33:05" (1/1) ... [2021-11-20 06:33:06,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:33:05" (1/1) ... [2021-11-20 06:33:06,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:33:06,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:33:06,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:33:06,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:33:06,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:33:05" (1/1) ... [2021-11-20 06:33:06,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:33:06,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:33:06,090 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:33:06,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:33:06,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-20 06:33:06,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 06:33:06,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 06:33:06,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 06:33:06,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 06:33:06,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 06:33:06,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 06:33:06,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 06:33:06,138 INFO L130 BoogieDeclarations]: Found specification of procedure delete [2021-11-20 06:33:06,138 INFO L138 BoogieDeclarations]: Found implementation of procedure delete [2021-11-20 06:33:06,138 INFO L130 BoogieDeclarations]: Found specification of procedure build [2021-11-20 06:33:06,139 INFO L138 BoogieDeclarations]: Found implementation of procedure build [2021-11-20 06:33:06,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:33:06,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:33:06,140 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-20 06:33:06,294 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:33:06,296 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:33:06,793 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:33:06,800 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:33:06,800 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 06:33:06,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:33:06 BoogieIcfgContainer [2021-11-20 06:33:06,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:33:06,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:33:06,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:33:06,807 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:33:06,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:33:05" (1/3) ... [2021-11-20 06:33:06,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a6e09e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:33:06, skipping insertion in model container [2021-11-20 06:33:06,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:33:05" (2/3) ... [2021-11-20 06:33:06,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a6e09e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:33:06, skipping insertion in model container [2021-11-20 06:33:06,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:33:06" (3/3) ... [2021-11-20 06:33:06,810 INFO L111 eAbstractionObserver]: Analyzing ICFG list1.i [2021-11-20 06:33:06,815 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:33:06,815 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2021-11-20 06:33:06,815 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-20 06:33:06,865 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_#in~plist#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,865 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_#in~plist#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,866 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_~plist#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,866 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_~plist#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,866 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_#in~plist#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,866 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_#in~plist#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,866 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_~plist#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,867 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_~plist#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,867 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_~#list~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,867 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_~#list~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,867 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_~#list~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,867 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_~#list~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,868 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_~#list~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,868 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_~plist#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,868 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_~#list~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,868 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_~plist#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,869 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_~#list~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,869 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_~plist#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,869 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_~#list~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,869 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_~plist#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,869 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_~#list~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,870 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_~#list~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,870 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#in~plist#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,870 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#in~plist#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,870 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_~#list~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,882 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_~#list~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,882 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#in~plist#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,882 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#in~plist#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,882 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,883 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,883 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,883 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,883 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem5#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,883 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,884 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem6#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,884 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~plist#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,884 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem6#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,889 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem3#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,890 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem4#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,890 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~ite8#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,890 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc7#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,891 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~ite8#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,891 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc7#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,891 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,891 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc2#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,891 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem4#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,892 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc2#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,892 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~plist#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,892 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem3#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,893 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem5#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,893 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem5#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,893 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,893 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem6#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,894 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~plist#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,894 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem6#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,894 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem3#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,896 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem4#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,897 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~ite8#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,897 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc7#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,897 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~ite8#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,898 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc7#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,898 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,899 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc2#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,899 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem4#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,899 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc2#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,899 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~plist#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,899 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem3#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,899 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem5#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,900 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#in~plist#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,900 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#in~plist#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,900 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~plist#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,901 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~plist#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,901 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#in~plist#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,901 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#in~plist#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,901 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~plist#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,901 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~plist#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,902 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc2#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,902 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc2#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,902 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc2#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,903 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc2#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,903 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc2#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,905 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc2#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,906 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,906 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,906 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc2#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,906 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc2#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,907 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,908 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,908 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc2#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,908 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc2#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,909 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc2#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,909 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc2#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,910 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~plist#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,910 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~plist#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,910 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem3#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,911 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem3#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,911 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~plist#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,911 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~plist#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,911 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem3#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,911 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem3#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,912 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~plist#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,913 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~plist#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,913 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~plist#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,913 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~plist#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,914 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~plist#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,914 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~plist#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,914 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,914 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,914 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem3#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,914 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem3#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,915 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,915 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,915 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem3#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,915 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem3#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,916 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,916 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,916 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,917 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,917 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,917 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,917 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem3#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,917 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem3#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,918 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem3#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,918 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem3#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,918 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,918 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,918 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem4#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,919 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem4#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,919 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,919 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,919 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem4#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,919 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem4#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,920 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,921 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,921 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,921 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,921 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,921 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,922 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem4#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,922 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem4#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,922 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem4#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,922 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem4#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,922 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem4#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,923 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem4#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,923 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem4#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,923 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem4#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,923 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,923 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,924 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem5#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,924 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem5#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,924 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,924 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,924 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem5#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,925 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem5#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,925 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,925 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,925 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,925 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,926 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,926 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,926 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc7#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,926 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc7#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,927 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc7#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,927 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc7#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,927 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem5#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,927 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem5#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,927 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem6#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,927 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem6#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,928 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem5#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,928 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem5#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,928 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem6#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,928 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem6#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,929 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem5#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,929 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem5#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,929 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem5#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,930 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem5#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,930 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem5#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,930 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem5#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,930 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc7#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,930 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc7#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,931 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~ite8#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,931 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~ite8#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,931 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc7#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,931 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc7#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,931 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~ite8#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,931 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~ite8#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,932 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem6#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,932 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem6#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,932 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~ite8#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,932 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~ite8#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,932 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem6#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,933 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem6#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,933 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~ite8#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,933 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~ite8#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,933 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~ite8#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,933 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,933 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,934 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~ite8#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,934 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~ite8#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,934 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,934 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,934 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~ite8#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,935 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,935 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,935 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,935 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,941 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,942 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,943 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem4#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,946 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem4#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,946 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem4#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,946 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem4#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,947 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~ite8#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,947 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~ite8#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,948 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~ite8#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,948 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~ite8#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,948 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem5#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,949 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem5#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,955 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem5#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,955 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem5#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,955 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem6#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,955 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem6#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,956 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem6#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,956 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem6#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,956 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc7#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,956 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc7#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,956 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc7#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,957 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc7#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,957 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,957 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,957 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~plist#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,957 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~plist#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,957 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,958 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,958 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~plist#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,958 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~plist#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,958 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~plist#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,958 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~plist#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,959 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~plist#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,959 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~plist#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,959 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~plist#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,960 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~plist#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,960 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_#t~nondet9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,960 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_#t~nondet9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,961 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_#t~nondet9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,961 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_#t~nondet9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,961 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_#t~nondet9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,961 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_#t~nondet9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,961 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_#t~nondet9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,962 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_#t~nondet9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,963 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#in~plist.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,965 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#in~plist.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,965 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~plist.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,965 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~plist.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,965 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#in~plist.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,965 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#in~plist.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,967 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~plist.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,967 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~plist.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,967 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~plist.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,968 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~plist.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,968 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,968 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,968 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~plist.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,968 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~plist.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,968 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,969 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,969 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,969 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,969 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,969 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,970 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,970 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,970 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,970 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,971 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,971 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,971 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem10.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,972 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem10.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,972 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,972 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,972 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem10.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,972 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem10.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,973 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,973 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,973 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,973 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,973 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,974 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,974 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,974 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,975 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,975 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,975 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,975 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,975 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,976 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,976 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem10.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,976 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem10.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,976 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~next~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,976 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~next~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,976 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem10.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,977 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem10.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,977 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~next~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,977 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~next~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,977 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,977 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,978 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,978 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,978 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,978 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,978 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem12.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,978 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem12.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,979 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,979 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,979 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem12.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,979 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem12.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,979 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,980 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,980 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,980 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,980 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,980 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,981 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem10.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,981 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem10.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,981 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem10.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,981 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem10.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,981 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem12.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,982 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem12.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,982 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~next~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,982 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~next~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,983 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem12.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,983 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem12.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,983 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~next~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,983 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~next~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,983 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,983 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,986 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem11.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,986 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem11.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,986 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,990 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,990 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem11.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,991 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem11.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,991 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,991 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,991 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,991 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,994 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,994 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,994 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem12.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,994 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem12.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,995 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem12.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,995 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem12.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,995 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem11.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,995 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem11.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,995 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem11.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,996 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem11.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,996 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,996 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,996 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,996 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,996 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem11.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,997 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem11.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,997 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem11.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,997 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem11.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,997 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,997 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,998 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,998 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,998 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem11.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,998 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem11.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,998 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem11.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,999 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem11.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,999 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,999 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,999 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:06,999 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,000 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem11.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,000 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem11.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,000 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,000 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,001 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem11.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,001 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem11.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,001 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem11.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,001 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem11.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,001 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~next~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,001 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~next~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,002 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,002 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,002 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~next~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,002 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~next~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,002 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,002 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,003 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,003 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,003 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,003 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,003 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,004 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,004 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,004 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,004 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,004 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,005 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,005 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,005 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,005 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,005 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~next~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,006 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~next~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,006 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,006 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,006 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~next~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,006 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~next~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,006 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,007 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,012 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem11.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,012 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~plist.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,012 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,013 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,013 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,013 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem12.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,013 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~next~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,013 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~list~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,014 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~plist.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,014 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem12.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,014 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem10.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,014 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~next~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,015 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~next~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,015 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem10.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,015 WARN L322 ript$VariableManager]: TermVariabe |deleteThread1of1ForFork0_#t~mem11.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,015 WARN L322 ript$VariableManager]: TermVariabe deleteThread1of1ForFork0_~next~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,023 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_#t~nondet9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,023 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~plist#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,023 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_~#list~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,024 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem5#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,024 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,024 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#in~plist#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,024 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc2#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,024 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#in~plist#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,024 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc2#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,025 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem5#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,025 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~ite8#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,025 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc7#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,025 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_~plist#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,025 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem4#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,026 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,026 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem6#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,026 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~ite8#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,026 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem3#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,026 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~malloc7#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,026 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_~plist#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,027 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,027 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,027 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_~#list~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,027 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~plist#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,027 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem4#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,028 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem3#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,028 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_#t~mem6#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:33:07,034 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-20 06:33:07,093 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:33:07,103 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 06:33:07,104 INFO L340 AbstractCegarLoop]: Starting to check reachability of 69 error locations. [2021-11-20 06:33:07,118 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-20 06:33:07,131 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 151 transitions, 318 flow [2021-11-20 06:33:07,134 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 151 transitions, 318 flow [2021-11-20 06:33:07,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 152 places, 151 transitions, 318 flow [2021-11-20 06:33:07,202 INFO L129 PetriNetUnfolder]: 6/149 cut-off events. [2021-11-20 06:33:07,202 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-20 06:33:07,205 INFO L84 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 149 events. 6/149 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 385 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 87. Up to 3 conditions per place. [2021-11-20 06:33:07,214 INFO L116 LiptonReduction]: Number of co-enabled transitions 960 [2021-11-20 06:33:33,558 INFO L131 LiptonReduction]: Checked pairs total: 1762 [2021-11-20 06:33:33,558 INFO L133 LiptonReduction]: Total number of compositions: 203 [2021-11-20 06:33:33,566 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 65 places, 63 transitions, 142 flow [2021-11-20 06:33:33,590 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 170 states, 74 states have (on average 4.094594594594595) internal successors, (303), 169 states have internal predecessors, (303), 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 06:33:33,592 INFO L276 IsEmpty]: Start isEmpty. Operand has 170 states, 74 states have (on average 4.094594594594595) internal successors, (303), 169 states have internal predecessors, (303), 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 06:33:33,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-11-20 06:33:33,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:33:33,596 INFO L514 BasicCegarLoop]: trace histogram [1] [2021-11-20 06:33:33,597 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:33:33,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:33:33,601 INFO L85 PathProgramCache]: Analyzing trace with hash 657, now seen corresponding path program 1 times [2021-11-20 06:33:33,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:33:33,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838313355] [2021-11-20 06:33:33,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:33:33,610 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:33:33,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:33:33,611 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:33:33,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 06:33:33,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:33:33,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-20 06:33:33,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:33:33,697 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 06:33:33,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:33:33,698 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 06:33:33,699 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:33:33,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [838313355] [2021-11-20 06:33:33,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [838313355] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:33:33,700 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:33:33,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-11-20 06:33:33,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001198434] [2021-11-20 06:33:33,703 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:33:33,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 06:33:33,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:33:33,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 06:33:33,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:33:33,730 INFO L87 Difference]: Start difference. First operand has 170 states, 74 states have (on average 4.094594594594595) internal successors, (303), 169 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 06:33:33,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:33:33,946 INFO L93 Difference]: Finished difference Result 136 states and 241 transitions. [2021-11-20 06:33:33,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 06:33:33,948 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2021-11-20 06:33:33,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:33:33,959 INFO L225 Difference]: With dead ends: 136 [2021-11-20 06:33:33,959 INFO L226 Difference]: Without dead ends: 136 [2021-11-20 06:33:33,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:33:33,963 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:33:33,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:33:33,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-20 06:33:34,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-11-20 06:33:34,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 66 states have (on average 3.6515151515151514) internal successors, (241), 135 states have internal predecessors, (241), 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 06:33:34,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 241 transitions. [2021-11-20 06:33:34,025 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 241 transitions. Word has length 1 [2021-11-20 06:33:34,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:33:34,025 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 241 transitions. [2021-11-20 06:33:34,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 06:33:34,026 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 241 transitions. [2021-11-20 06:33:34,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-20 06:33:34,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:33:34,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-20 06:33:34,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:33:34,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:33:34,238 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:33:34,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:33:34,238 INFO L85 PathProgramCache]: Analyzing trace with hash 647005, now seen corresponding path program 1 times [2021-11-20 06:33:34,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:33:34,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1332946325] [2021-11-20 06:33:34,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:33:34,240 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:33:34,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:33:34,241 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:33:34,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 06:33:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:33:34,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:33:34,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:33:34,467 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:33:34,468 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 19 treesize of output 21 [2021-11-20 06:33:34,555 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 06:33:34,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:33:34,571 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 06:33:34,571 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:33:34,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1332946325] [2021-11-20 06:33:34,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1332946325] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:33:34,572 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:33:34,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-11-20 06:33:34,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700996777] [2021-11-20 06:33:34,573 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:33:34,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:33:34,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:33:34,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:33:34,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:33:34,576 INFO L87 Difference]: Start difference. First operand 136 states and 241 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:33:34,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:33:34,878 INFO L93 Difference]: Finished difference Result 135 states and 239 transitions. [2021-11-20 06:33:34,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:33:34,879 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-20 06:33:34,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:33:34,881 INFO L225 Difference]: With dead ends: 135 [2021-11-20 06:33:34,881 INFO L226 Difference]: Without dead ends: 135 [2021-11-20 06:33:34,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 06:33:34,883 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:33:34,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 47 Unchecked, 0.3s Time] [2021-11-20 06:33:34,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-20 06:33:34,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2021-11-20 06:33:34,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 65 states have (on average 3.6769230769230767) internal successors, (239), 134 states have internal predecessors, (239), 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 06:33:34,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 239 transitions. [2021-11-20 06:33:34,901 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 239 transitions. Word has length 3 [2021-11-20 06:33:34,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:33:34,902 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 239 transitions. [2021-11-20 06:33:34,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:33:34,902 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 239 transitions. [2021-11-20 06:33:34,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-20 06:33:34,902 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:33:34,903 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-20 06:33:34,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:33:35,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:33:35,114 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:33:35,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:33:35,115 INFO L85 PathProgramCache]: Analyzing trace with hash 647006, now seen corresponding path program 1 times [2021-11-20 06:33:35,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:33:35,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477570081] [2021-11-20 06:33:35,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:33:35,116 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:33:35,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:33:35,117 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:33:35,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 06:33:35,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:33:35,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:33:35,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:33:35,255 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:33:35,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2021-11-20 06:33:35,261 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 20 treesize of output 18 [2021-11-20 06:33:35,345 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 06:33:35,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:33:35,401 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 06:33:35,401 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:33:35,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477570081] [2021-11-20 06:33:35,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1477570081] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:33:35,402 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:33:35,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-11-20 06:33:35,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304160602] [2021-11-20 06:33:35,402 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:33:35,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:33:35,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:33:35,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:33:35,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:33:35,403 INFO L87 Difference]: Start difference. First operand 135 states and 239 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:33:35,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:33:35,580 INFO L93 Difference]: Finished difference Result 134 states and 237 transitions. [2021-11-20 06:33:35,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:33:35,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-20 06:33:35,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:33:35,583 INFO L225 Difference]: With dead ends: 134 [2021-11-20 06:33:35,583 INFO L226 Difference]: Without dead ends: 134 [2021-11-20 06:33:35,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 06:33:35,585 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:33:35,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 47 Unchecked, 0.2s Time] [2021-11-20 06:33:35,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-20 06:33:35,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-11-20 06:33:35,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 64 states have (on average 3.703125) internal successors, (237), 133 states have internal predecessors, (237), 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 06:33:35,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 237 transitions. [2021-11-20 06:33:35,599 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 237 transitions. Word has length 3 [2021-11-20 06:33:35,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:33:35,599 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 237 transitions. [2021-11-20 06:33:35,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:33:35,599 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 237 transitions. [2021-11-20 06:33:35,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-20 06:33:35,600 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:33:35,600 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-20 06:33:35,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 06:33:35,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:33:35,811 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting buildErr0REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:33:35,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:33:35,812 INFO L85 PathProgramCache]: Analyzing trace with hash 20057328, now seen corresponding path program 1 times [2021-11-20 06:33:35,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:33:35,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151517756] [2021-11-20 06:33:35,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:33:35,813 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:33:35,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:33:35,814 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:33:35,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 06:33:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:33:35,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 06:33:35,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:33:35,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 06:33:35,928 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 06:33:35,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:33:35,950 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 06:33:35,950 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:33:35,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151517756] [2021-11-20 06:33:35,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [151517756] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:33:35,951 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:33:35,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 06:33:35,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845119136] [2021-11-20 06:33:35,951 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:33:35,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:33:35,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:33:35,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:33:35,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:33:35,953 INFO L87 Difference]: Start difference. First operand 134 states and 237 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:33:36,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:33:36,208 INFO L93 Difference]: Finished difference Result 155 states and 274 transitions. [2021-11-20 06:33:36,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:33:36,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-20 06:33:36,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:33:36,210 INFO L225 Difference]: With dead ends: 155 [2021-11-20 06:33:36,210 INFO L226 Difference]: Without dead ends: 155 [2021-11-20 06:33:36,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 1 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 06:33:36,211 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 35 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:33:36,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 1 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:33:36,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-11-20 06:33:36,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 130. [2021-11-20 06:33:36,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 63 states have (on average 3.6507936507936507) internal successors, (230), 129 states have internal predecessors, (230), 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 06:33:36,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 230 transitions. [2021-11-20 06:33:36,219 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 230 transitions. Word has length 4 [2021-11-20 06:33:36,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:33:36,224 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 230 transitions. [2021-11-20 06:33:36,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:33:36,225 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 230 transitions. [2021-11-20 06:33:36,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-20 06:33:36,226 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:33:36,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-20 06:33:36,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 06:33:36,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:33:36,437 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:33:36,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:33:36,438 INFO L85 PathProgramCache]: Analyzing trace with hash 20057283, now seen corresponding path program 1 times [2021-11-20 06:33:36,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:33:36,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [694903292] [2021-11-20 06:33:36,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:33:36,439 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:33:36,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:33:36,440 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:33:36,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 06:33:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:33:36,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:33:36,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:33:36,583 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:33:36,588 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 20 treesize of output 22 [2021-11-20 06:33:36,705 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-20 06:33:36,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 41 [2021-11-20 06:33:36,751 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 06:33:36,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:33:36,792 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 06:33:36,792 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:33:36,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [694903292] [2021-11-20 06:33:36,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [694903292] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:33:36,793 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:33:36,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-11-20 06:33:36,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327504405] [2021-11-20 06:33:36,793 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:33:36,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:33:36,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:33:36,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:33:36,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:33:36,796 INFO L87 Difference]: Start difference. First operand 130 states and 230 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) 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 06:33:36,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:33:36,969 INFO L93 Difference]: Finished difference Result 131 states and 234 transitions. [2021-11-20 06:33:36,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:33:36,970 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) 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 4 [2021-11-20 06:33:36,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:33:36,971 INFO L225 Difference]: With dead ends: 131 [2021-11-20 06:33:36,972 INFO L226 Difference]: Without dead ends: 131 [2021-11-20 06:33:36,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 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 06:33:36,973 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:33:36,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 46 Unchecked, 0.2s Time] [2021-11-20 06:33:36,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-20 06:33:36,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-11-20 06:33:36,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 64 states have (on average 3.65625) internal successors, (234), 130 states have internal predecessors, (234), 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 06:33:36,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 234 transitions. [2021-11-20 06:33:36,988 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 234 transitions. Word has length 4 [2021-11-20 06:33:36,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:33:36,989 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 234 transitions. [2021-11-20 06:33:36,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) 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 06:33:36,989 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 234 transitions. [2021-11-20 06:33:36,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-20 06:33:36,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:33:36,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-20 06:33:37,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 06:33:37,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:33:37,196 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:33:37,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:33:37,197 INFO L85 PathProgramCache]: Analyzing trace with hash 20057284, now seen corresponding path program 1 times [2021-11-20 06:33:37,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:33:37,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [777617997] [2021-11-20 06:33:37,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:33:37,198 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:33:37,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:33:37,198 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:33:37,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 06:33:37,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:33:37,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 06:33:37,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:33:37,307 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:33:37,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2021-11-20 06:33:37,320 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 20 treesize of output 18 [2021-11-20 06:33:37,410 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-20 06:33:37,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 26 [2021-11-20 06:33:37,436 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 06:33:37,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:33:37,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:33:37,583 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:33:37,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [777617997] [2021-11-20 06:33:37,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [777617997] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:33:37,584 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:33:37,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 2] imperfect sequences [] total 3 [2021-11-20 06:33:37,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992938828] [2021-11-20 06:33:37,584 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:33:37,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:33:37,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:33:37,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:33:37,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:33:37,585 INFO L87 Difference]: Start difference. First operand 131 states and 234 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:33:37,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:33:37,944 INFO L93 Difference]: Finished difference Result 131 states and 233 transitions. [2021-11-20 06:33:37,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:33:37,944 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-20 06:33:37,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:33:37,945 INFO L225 Difference]: With dead ends: 131 [2021-11-20 06:33:37,946 INFO L226 Difference]: Without dead ends: 131 [2021-11-20 06:33:37,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:33:37,947 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:33:37,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 5 Unchecked, 0.4s Time] [2021-11-20 06:33:37,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-20 06:33:37,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-11-20 06:33:37,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 64 states have (on average 3.640625) internal successors, (233), 130 states have internal predecessors, (233), 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 06:33:37,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 233 transitions. [2021-11-20 06:33:37,956 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 233 transitions. Word has length 4 [2021-11-20 06:33:37,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:33:37,957 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 233 transitions. [2021-11-20 06:33:37,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:33:37,957 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 233 transitions. [2021-11-20 06:33:37,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-20 06:33:37,958 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:33:37,958 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-20 06:33:37,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-20 06:33:38,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:33:38,169 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting buildErr1REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:33:38,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:33:38,170 INFO L85 PathProgramCache]: Analyzing trace with hash 20057327, now seen corresponding path program 1 times [2021-11-20 06:33:38,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:33:38,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780727970] [2021-11-20 06:33:38,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:33:38,171 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:33:38,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:33:38,172 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:33:38,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 06:33:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:33:38,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 06:33:38,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:33:38,281 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 06:33:38,287 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 06:33:38,301 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 06:33:38,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:33:38,508 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 06:33:38,508 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:33:38,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780727970] [2021-11-20 06:33:38,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780727970] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:33:38,509 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:33:38,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-20 06:33:38,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453592237] [2021-11-20 06:33:38,509 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:33:38,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:33:38,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:33:38,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:33:38,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:33:38,511 INFO L87 Difference]: Start difference. First operand 131 states and 233 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:33:38,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:33:38,662 INFO L93 Difference]: Finished difference Result 132 states and 233 transitions. [2021-11-20 06:33:38,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:33:38,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-20 06:33:38,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:33:38,664 INFO L225 Difference]: With dead ends: 132 [2021-11-20 06:33:38,664 INFO L226 Difference]: Without dead ends: 132 [2021-11-20 06:33:38,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:33:38,666 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 2 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:33:38,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 3 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 47 Unchecked, 0.1s Time] [2021-11-20 06:33:38,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-20 06:33:38,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2021-11-20 06:33:38,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 65 states have (on average 3.5846153846153848) internal successors, (233), 131 states have internal predecessors, (233), 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 06:33:38,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 233 transitions. [2021-11-20 06:33:38,674 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 233 transitions. Word has length 4 [2021-11-20 06:33:38,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:33:38,674 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 233 transitions. [2021-11-20 06:33:38,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:33:38,675 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 233 transitions. [2021-11-20 06:33:38,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 06:33:38,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:33:38,675 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 06:33:38,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 06:33:38,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:33:38,887 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting buildErr8REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:33:38,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:33:38,887 INFO L85 PathProgramCache]: Analyzing trace with hash 621777716, now seen corresponding path program 1 times [2021-11-20 06:33:38,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:33:38,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [181845377] [2021-11-20 06:33:38,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:33:38,888 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:33:38,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:33:38,889 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:33:38,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 06:33:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:33:38,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-20 06:33:38,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:33:39,053 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 06:33:39,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:33:39,084 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 32 treesize of output 24 [2021-11-20 06:33:39,087 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 20 treesize of output 12 [2021-11-20 06:33:39,100 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 06:33:39,100 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:33:39,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [181845377] [2021-11-20 06:33:39,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [181845377] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:33:39,101 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:33:39,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 06:33:39,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166715334] [2021-11-20 06:33:39,102 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:33:39,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:33:39,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:33:39,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:33:39,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:33:39,103 INFO L87 Difference]: Start difference. First operand 132 states and 233 transitions. Second operand has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 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 06:33:39,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:33:39,638 INFO L93 Difference]: Finished difference Result 160 states and 282 transitions. [2021-11-20 06:33:39,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:33:39,639 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-20 06:33:39,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:33:39,640 INFO L225 Difference]: With dead ends: 160 [2021-11-20 06:33:39,640 INFO L226 Difference]: Without dead ends: 160 [2021-11-20 06:33:39,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:33:39,642 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 125 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:33:39,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 6 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 06:33:39,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-20 06:33:39,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 136. [2021-11-20 06:33:39,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 69 states have (on average 3.4782608695652173) internal successors, (240), 135 states have internal predecessors, (240), 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 06:33:39,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 240 transitions. [2021-11-20 06:33:39,649 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 240 transitions. Word has length 5 [2021-11-20 06:33:39,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:33:39,650 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 240 transitions. [2021-11-20 06:33:39,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 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 06:33:39,650 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 240 transitions. [2021-11-20 06:33:39,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 06:33:39,651 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:33:39,651 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 06:33:39,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 06:33:39,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:33:39,875 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:33:39,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:33:39,875 INFO L85 PathProgramCache]: Analyzing trace with hash 621777637, now seen corresponding path program 1 times [2021-11-20 06:33:39,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:33:39,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754877975] [2021-11-20 06:33:39,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:33:39,876 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:33:39,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:33:39,877 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:33:39,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 06:33:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:33:39,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 06:33:39,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:33:39,981 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:33:39,982 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 19 treesize of output 21 [2021-11-20 06:33:40,084 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-20 06:33:40,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 54 [2021-11-20 06:33:40,234 INFO L354 Elim1Store]: treesize reduction 57, result has 30.5 percent of original size [2021-11-20 06:33:40,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 68 [2021-11-20 06:33:40,342 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 06:33:40,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:33:46,434 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 06:33:46,434 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:33:46,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754877975] [2021-11-20 06:33:46,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754877975] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:33:46,434 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:33:46,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-11-20 06:33:46,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925587815] [2021-11-20 06:33:46,435 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:33:46,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:33:46,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:33:46,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:33:46,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=12, Unknown=3, NotChecked=0, Total=30 [2021-11-20 06:33:46,436 INFO L87 Difference]: Start difference. First operand 136 states and 240 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 06:33:46,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:33:46,608 INFO L93 Difference]: Finished difference Result 135 states and 238 transitions. [2021-11-20 06:33:46,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:33:46,609 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-20 06:33:46,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:33:46,610 INFO L225 Difference]: With dead ends: 135 [2021-11-20 06:33:46,611 INFO L226 Difference]: Without dead ends: 135 [2021-11-20 06:33:46,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=15, Invalid=12, Unknown=3, NotChecked=0, Total=30 [2021-11-20 06:33:46,612 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:33:46,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 87 Unchecked, 0.2s Time] [2021-11-20 06:33:46,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-20 06:33:46,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2021-11-20 06:33:46,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 68 states have (on average 3.5) internal successors, (238), 134 states have internal predecessors, (238), 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 06:33:46,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 238 transitions. [2021-11-20 06:33:46,619 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 238 transitions. Word has length 5 [2021-11-20 06:33:46,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:33:46,620 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 238 transitions. [2021-11-20 06:33:46,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 06:33:46,620 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 238 transitions. [2021-11-20 06:33:46,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 06:33:46,620 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:33:46,621 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 06:33:46,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-20 06:33:46,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:33:46,832 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:33:46,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:33:46,833 INFO L85 PathProgramCache]: Analyzing trace with hash 621777638, now seen corresponding path program 1 times [2021-11-20 06:33:46,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:33:46,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1131270332] [2021-11-20 06:33:46,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:33:46,834 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:33:46,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:33:46,835 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:33:46,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 06:33:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:33:46,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 06:33:46,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:33:46,976 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:33:46,976 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 28 treesize of output 30 [2021-11-20 06:33:46,995 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:33:46,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2021-11-20 06:33:47,136 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-20 06:33:47,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 50 [2021-11-20 06:33:47,160 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-20 06:33:47,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 46 [2021-11-20 06:33:47,337 INFO L354 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2021-11-20 06:33:47,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 54 [2021-11-20 06:33:48,048 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 06:33:48,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:33:48,477 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 06:33:48,477 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:33:48,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1131270332] [2021-11-20 06:33:48,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1131270332] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:33:48,477 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:33:48,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-20 06:33:48,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236212944] [2021-11-20 06:33:48,478 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:33:48,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 06:33:48,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:33:48,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 06:33:48,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:33:48,479 INFO L87 Difference]: Start difference. First operand 135 states and 238 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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 06:33:48,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:33:48,955 INFO L93 Difference]: Finished difference Result 134 states and 236 transitions. [2021-11-20 06:33:48,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:33:48,956 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-20 06:33:48,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:33:48,958 INFO L225 Difference]: With dead ends: 134 [2021-11-20 06:33:48,958 INFO L226 Difference]: Without dead ends: 134 [2021-11-20 06:33:48,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:33:48,959 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 92 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:33:48,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 92 Unchecked, 0.5s Time] [2021-11-20 06:33:48,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-20 06:33:48,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-11-20 06:33:48,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 67 states have (on average 3.5223880597014925) internal successors, (236), 133 states have internal predecessors, (236), 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 06:33:48,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 236 transitions. [2021-11-20 06:33:48,965 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 236 transitions. Word has length 5 [2021-11-20 06:33:48,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:33:48,965 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 236 transitions. [2021-11-20 06:33:48,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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 06:33:48,966 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 236 transitions. [2021-11-20 06:33:48,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 06:33:48,966 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:33:48,966 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 06:33:48,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-20 06:33:49,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:33:49,167 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:33:49,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:33:49,167 INFO L85 PathProgramCache]: Analyzing trace with hash 2095237877, now seen corresponding path program 1 times [2021-11-20 06:33:49,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:33:49,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214796902] [2021-11-20 06:33:49,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:33:49,168 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:33:49,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:33:49,169 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:33:49,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 06:33:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:33:49,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 06:33:49,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:33:49,273 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:33:49,273 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 20 treesize of output 22 [2021-11-20 06:33:49,347 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-20 06:33:49,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 41 [2021-11-20 06:33:49,423 INFO L354 Elim1Store]: treesize reduction 57, result has 30.5 percent of original size [2021-11-20 06:33:49,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 60 [2021-11-20 06:33:49,533 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 06:33:49,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:33:49,639 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 06:33:49,639 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:33:49,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [214796902] [2021-11-20 06:33:49,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [214796902] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:33:49,639 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:33:49,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-20 06:33:49,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597675207] [2021-11-20 06:33:49,640 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:33:49,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 06:33:49,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:33:49,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 06:33:49,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:33:49,641 INFO L87 Difference]: Start difference. First operand 134 states and 236 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:33:50,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:33:50,031 INFO L93 Difference]: Finished difference Result 137 states and 239 transitions. [2021-11-20 06:33:50,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:33:50,032 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-20 06:33:50,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:33:50,034 INFO L225 Difference]: With dead ends: 137 [2021-11-20 06:33:50,034 INFO L226 Difference]: Without dead ends: 137 [2021-11-20 06:33:50,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:33:50,035 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:33:50,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 6 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 117 Invalid, 0 Unknown, 50 Unchecked, 0.4s Time] [2021-11-20 06:33:50,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-20 06:33:50,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 135. [2021-11-20 06:33:50,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 68 states have (on average 3.514705882352941) internal successors, (239), 134 states have internal predecessors, (239), 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 06:33:50,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 239 transitions. [2021-11-20 06:33:50,042 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 239 transitions. Word has length 6 [2021-11-20 06:33:50,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:33:50,043 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 239 transitions. [2021-11-20 06:33:50,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:33:50,043 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 239 transitions. [2021-11-20 06:33:50,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 06:33:50,044 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:33:50,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 06:33:50,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-20 06:33:50,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:33:50,263 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:33:50,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:33:50,263 INFO L85 PathProgramCache]: Analyzing trace with hash 2095237878, now seen corresponding path program 1 times [2021-11-20 06:33:50,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:33:50,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [289108278] [2021-11-20 06:33:50,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:33:50,264 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:33:50,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:33:50,266 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:33:50,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 06:33:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:33:50,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 06:33:50,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:33:50,393 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:33:50,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2021-11-20 06:33:50,400 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 20 treesize of output 18 [2021-11-20 06:33:50,479 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-20 06:33:50,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 26 [2021-11-20 06:33:50,611 INFO L354 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2021-11-20 06:33:50,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 46 [2021-11-20 06:33:51,422 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 06:33:51,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:33:51,988 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 06:33:51,988 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:33:51,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [289108278] [2021-11-20 06:33:51,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [289108278] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:33:51,988 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:33:51,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-11-20 06:33:51,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521444309] [2021-11-20 06:33:51,989 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:33:51,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:33:51,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:33:51,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:33:51,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:33:51,990 INFO L87 Difference]: Start difference. First operand 135 states and 239 transitions. Second operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 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 06:33:52,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:33:52,672 INFO L93 Difference]: Finished difference Result 135 states and 238 transitions. [2021-11-20 06:33:52,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:33:52,674 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-20 06:33:52,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:33:52,675 INFO L225 Difference]: With dead ends: 135 [2021-11-20 06:33:52,675 INFO L226 Difference]: Without dead ends: 135 [2021-11-20 06:33:52,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:33:52,676 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 06:33:52,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 90 Unchecked, 0.7s Time] [2021-11-20 06:33:52,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-20 06:33:52,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2021-11-20 06:33:52,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 68 states have (on average 3.5) internal successors, (238), 134 states have internal predecessors, (238), 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 06:33:52,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 238 transitions. [2021-11-20 06:33:52,684 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 238 transitions. Word has length 6 [2021-11-20 06:33:52,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:33:52,684 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 238 transitions. [2021-11-20 06:33:52,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 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 06:33:52,685 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 238 transitions. [2021-11-20 06:33:52,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 06:33:52,685 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:33:52,685 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:33:52,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-20 06:33:52,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:33:52,899 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting buildErr12REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:33:52,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:33:52,899 INFO L85 PathProgramCache]: Analyzing trace with hash 527865293, now seen corresponding path program 1 times [2021-11-20 06:33:52,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:33:52,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [103413814] [2021-11-20 06:33:52,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:33:52,900 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:33:52,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:33:52,901 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:33:52,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-20 06:33:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:33:53,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 06:33:53,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:33:53,051 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 06:33:53,114 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 06:33:53,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-11-20 06:33:53,155 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 06:33:53,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:33:57,234 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 06:33:57,235 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:33:57,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [103413814] [2021-11-20 06:33:57,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [103413814] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:33:57,235 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:33:57,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 5 [2021-11-20 06:33:57,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148257851] [2021-11-20 06:33:57,236 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:33:57,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:33:57,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:33:57,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:33:57,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=13, Unknown=2, NotChecked=0, Total=30 [2021-11-20 06:33:57,237 INFO L87 Difference]: Start difference. First operand 135 states and 238 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 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 06:33:57,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:33:57,381 INFO L93 Difference]: Finished difference Result 159 states and 291 transitions. [2021-11-20 06:33:57,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:33:57,382 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 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 7 [2021-11-20 06:33:57,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:33:57,383 INFO L225 Difference]: With dead ends: 159 [2021-11-20 06:33:57,383 INFO L226 Difference]: Without dead ends: 159 [2021-11-20 06:33:57,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=15, Invalid=13, Unknown=2, NotChecked=0, Total=30 [2021-11-20 06:33:57,384 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 3 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 125 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:33:57,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 4 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 125 Unchecked, 0.1s Time] [2021-11-20 06:33:57,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-20 06:33:57,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 142. [2021-11-20 06:33:57,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 75 states have (on average 3.466666666666667) internal successors, (260), 141 states have internal predecessors, (260), 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 06:33:57,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 260 transitions. [2021-11-20 06:33:57,391 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 260 transitions. Word has length 7 [2021-11-20 06:33:57,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:33:57,392 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 260 transitions. [2021-11-20 06:33:57,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 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 06:33:57,392 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 260 transitions. [2021-11-20 06:33:57,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 06:33:57,393 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:33:57,393 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:33:57,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-20 06:33:57,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:33:57,600 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:33:57,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:33:57,601 INFO L85 PathProgramCache]: Analyzing trace with hash 527865216, now seen corresponding path program 1 times [2021-11-20 06:33:57,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:33:57,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033760043] [2021-11-20 06:33:57,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:33:57,603 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:33:57,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:33:57,604 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:33:57,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-20 06:33:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:33:57,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 06:33:57,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:33:57,795 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:33:57,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2021-11-20 06:33:57,927 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-20 06:33:57,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 55 [2021-11-20 06:33:58,160 INFO L354 Elim1Store]: treesize reduction 57, result has 30.5 percent of original size [2021-11-20 06:33:58,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 76 [2021-11-20 06:33:58,565 INFO L354 Elim1Store]: treesize reduction 92, result has 26.4 percent of original size [2021-11-20 06:33:58,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 71 treesize of output 94 [2021-11-20 06:33:59,390 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 06:33:59,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:34:01,625 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 06:34:01,626 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:34:01,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1033760043] [2021-11-20 06:34:01,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1033760043] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:34:01,626 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:34:01,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-20 06:34:01,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800747681] [2021-11-20 06:34:01,627 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:34:01,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 06:34:01,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:34:01,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 06:34:01,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=29, Unknown=1, NotChecked=0, Total=56 [2021-11-20 06:34:01,628 INFO L87 Difference]: Start difference. First operand 142 states and 260 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:34:01,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:34:01,788 INFO L93 Difference]: Finished difference Result 144 states and 268 transitions. [2021-11-20 06:34:01,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:34:01,789 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-20 06:34:01,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:34:01,790 INFO L225 Difference]: With dead ends: 144 [2021-11-20 06:34:01,790 INFO L226 Difference]: Without dead ends: 144 [2021-11-20 06:34:01,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=26, Invalid=29, Unknown=1, NotChecked=0, Total=56 [2021-11-20 06:34:01,791 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 1 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:34:01,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 5 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 85 Unchecked, 0.2s Time] [2021-11-20 06:34:01,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-11-20 06:34:01,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-11-20 06:34:01,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 77 states have (on average 3.4805194805194803) internal successors, (268), 143 states have internal predecessors, (268), 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 06:34:01,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 268 transitions. [2021-11-20 06:34:01,800 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 268 transitions. Word has length 7 [2021-11-20 06:34:01,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:34:01,800 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 268 transitions. [2021-11-20 06:34:01,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:34:01,800 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 268 transitions. [2021-11-20 06:34:01,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 06:34:01,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:34:01,801 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:34:01,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-20 06:34:02,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:34:02,002 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:34:02,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:34:02,003 INFO L85 PathProgramCache]: Analyzing trace with hash 527865217, now seen corresponding path program 1 times [2021-11-20 06:34:02,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:34:02,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870514102] [2021-11-20 06:34:02,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:34:02,004 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:34:02,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:34:02,011 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:34:02,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-20 06:34:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:34:02,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 06:34:02,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:34:02,236 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:34:02,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2021-11-20 06:34:02,259 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:34:02,259 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 30 treesize of output 32 [2021-11-20 06:34:02,433 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-20 06:34:02,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 51 [2021-11-20 06:34:02,472 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-20 06:34:02,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 47 [2021-11-20 06:34:02,718 INFO L354 Elim1Store]: treesize reduction 58, result has 29.3 percent of original size [2021-11-20 06:34:02,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2021-11-20 06:34:04,327 INFO L354 Elim1Store]: treesize reduction 76, result has 39.2 percent of original size [2021-11-20 06:34:04,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 53 treesize of output 92 [2021-11-20 06:34:08,913 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 06:34:08,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:34:11,974 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 06:34:11,975 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:34:11,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [870514102] [2021-11-20 06:34:11,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [870514102] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:34:11,975 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:34:11,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-11-20 06:34:11,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443820986] [2021-11-20 06:34:11,975 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:34:11,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:34:11,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:34:11,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:34:11,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=53, Unknown=1, NotChecked=0, Total=90 [2021-11-20 06:34:11,976 INFO L87 Difference]: Start difference. First operand 144 states and 268 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:34:12,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:34:12,176 INFO L93 Difference]: Finished difference Result 145 states and 269 transitions. [2021-11-20 06:34:12,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:34:12,177 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-20 06:34:12,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:34:12,178 INFO L225 Difference]: With dead ends: 145 [2021-11-20 06:34:12,178 INFO L226 Difference]: Without dead ends: 145 [2021-11-20 06:34:12,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=36, Invalid=53, Unknown=1, NotChecked=0, Total=90 [2021-11-20 06:34:12,179 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 2 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 128 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:34:12,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 6 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 128 Unchecked, 0.2s Time] [2021-11-20 06:34:12,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-20 06:34:12,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-11-20 06:34:12,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 78 states have (on average 3.448717948717949) internal successors, (269), 144 states have internal predecessors, (269), 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 06:34:12,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 269 transitions. [2021-11-20 06:34:12,186 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 269 transitions. Word has length 7 [2021-11-20 06:34:12,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:34:12,186 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 269 transitions. [2021-11-20 06:34:12,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:34:12,192 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 269 transitions. [2021-11-20 06:34:12,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 06:34:12,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:34:12,193 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:34:12,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-20 06:34:12,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:34:12,413 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting buildErr10REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:34:12,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:34:12,413 INFO L85 PathProgramCache]: Analyzing trace with hash 527865046, now seen corresponding path program 1 times [2021-11-20 06:34:12,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:34:12,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1381686709] [2021-11-20 06:34:12,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:34:12,414 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:34:12,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:34:12,415 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:34:12,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-20 06:34:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:34:12,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:34:12,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:34:12,515 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 06:34:12,544 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 06:34:12,544 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 23 treesize of output 30 [2021-11-20 06:34:12,573 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 06:34:12,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:34:14,613 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 06:34:14,614 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:34:14,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1381686709] [2021-11-20 06:34:14,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1381686709] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:34:14,614 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:34:14,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 06:34:14,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727626763] [2021-11-20 06:34:14,614 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:34:14,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:34:14,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:34:14,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:34:14,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=9, Unknown=1, NotChecked=0, Total=20 [2021-11-20 06:34:14,616 INFO L87 Difference]: Start difference. First operand 145 states and 269 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 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 06:34:14,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:34:14,835 INFO L93 Difference]: Finished difference Result 154 states and 290 transitions. [2021-11-20 06:34:14,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:34:14,836 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 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 7 [2021-11-20 06:34:14,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:34:14,838 INFO L225 Difference]: With dead ends: 154 [2021-11-20 06:34:14,838 INFO L226 Difference]: Without dead ends: 154 [2021-11-20 06:34:14,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=10, Invalid=9, Unknown=1, NotChecked=0, Total=20 [2021-11-20 06:34:14,839 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:34:14,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 56 Unchecked, 0.2s Time] [2021-11-20 06:34:14,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-11-20 06:34:14,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-11-20 06:34:14,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 87 states have (on average 3.3333333333333335) internal successors, (290), 153 states have internal predecessors, (290), 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 06:34:14,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 290 transitions. [2021-11-20 06:34:14,849 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 290 transitions. Word has length 7 [2021-11-20 06:34:14,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:34:14,849 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 290 transitions. [2021-11-20 06:34:14,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 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 06:34:14,850 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 290 transitions. [2021-11-20 06:34:14,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 06:34:14,851 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:34:14,851 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:34:14,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-20 06:34:15,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:34:15,063 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting buildErr11REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:34:15,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:34:15,064 INFO L85 PathProgramCache]: Analyzing trace with hash 527865047, now seen corresponding path program 1 times [2021-11-20 06:34:15,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:34:15,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271480826] [2021-11-20 06:34:15,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:34:15,064 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:34:15,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:34:15,065 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:34:15,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-20 06:34:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:34:15,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 06:34:15,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:34:15,195 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 06:34:15,202 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 06:34:15,242 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:34:15,243 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 06:34:15,254 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:34:15,254 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 25 [2021-11-20 06:34:15,292 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 06:34:15,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:34:17,602 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 06:34:17,603 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:34:17,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271480826] [2021-11-20 06:34:17,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [271480826] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:34:17,603 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:34:17,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 06:34:17,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646093284] [2021-11-20 06:34:17,604 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:34:17,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:34:17,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:34:17,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:34:17,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-20 06:34:17,605 INFO L87 Difference]: Start difference. First operand 154 states and 290 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 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 06:34:18,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:34:18,066 INFO L93 Difference]: Finished difference Result 161 states and 300 transitions. [2021-11-20 06:34:18,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:34:18,067 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 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 7 [2021-11-20 06:34:18,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:34:18,069 INFO L225 Difference]: With dead ends: 161 [2021-11-20 06:34:18,069 INFO L226 Difference]: Without dead ends: 161 [2021-11-20 06:34:18,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-20 06:34:18,070 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 21 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:34:18,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 1 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 86 Invalid, 0 Unknown, 58 Unchecked, 0.5s Time] [2021-11-20 06:34:18,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-11-20 06:34:18,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 155. [2021-11-20 06:34:18,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 88 states have (on average 3.272727272727273) internal successors, (288), 154 states have internal predecessors, (288), 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 06:34:18,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 288 transitions. [2021-11-20 06:34:18,077 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 288 transitions. Word has length 7 [2021-11-20 06:34:18,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:34:18,078 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 288 transitions. [2021-11-20 06:34:18,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 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 06:34:18,078 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 288 transitions. [2021-11-20 06:34:18,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 06:34:18,079 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:34:18,079 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:34:18,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-20 06:34:18,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:34:18,291 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting buildErr13REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:34:18,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:34:18,291 INFO L85 PathProgramCache]: Analyzing trace with hash 527865292, now seen corresponding path program 1 times [2021-11-20 06:34:18,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:34:18,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845573595] [2021-11-20 06:34:18,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:34:18,292 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:34:18,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:34:18,293 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:34:18,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-20 06:34:18,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:34:18,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 06:34:18,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:34:18,424 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 06:34:18,521 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-20 06:34:18,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 37 [2021-11-20 06:34:18,532 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:34:18,533 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 31 treesize of output 31 [2021-11-20 06:34:18,619 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 06:34:18,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:34:20,934 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-20 06:34:20,934 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 41 treesize of output 40 [2021-11-20 06:34:21,069 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 24 treesize of output 22 [2021-11-20 06:34:21,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:34:21,121 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:34:21,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845573595] [2021-11-20 06:34:21,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845573595] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:34:21,121 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:34:21,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-20 06:34:21,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982571681] [2021-11-20 06:34:21,124 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:34:21,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:34:21,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:34:21,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:34:21,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=61, Unknown=1, NotChecked=0, Total=90 [2021-11-20 06:34:21,125 INFO L87 Difference]: Start difference. First operand 155 states and 288 transitions. Second operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 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 06:34:21,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:34:21,547 INFO L93 Difference]: Finished difference Result 157 states and 289 transitions. [2021-11-20 06:34:21,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:34:21,547 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 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 7 [2021-11-20 06:34:21,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:34:21,548 INFO L225 Difference]: With dead ends: 157 [2021-11-20 06:34:21,548 INFO L226 Difference]: Without dead ends: 157 [2021-11-20 06:34:21,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=34, Invalid=75, Unknown=1, NotChecked=0, Total=110 [2021-11-20 06:34:21,549 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 4 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:34:21,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 6 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 54 Unchecked, 0.4s Time] [2021-11-20 06:34:21,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-20 06:34:21,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2021-11-20 06:34:21,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 90 states have (on average 3.2111111111111112) internal successors, (289), 156 states have internal predecessors, (289), 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 06:34:21,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 289 transitions. [2021-11-20 06:34:21,556 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 289 transitions. Word has length 7 [2021-11-20 06:34:21,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:34:21,556 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 289 transitions. [2021-11-20 06:34:21,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 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 06:34:21,557 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 289 transitions. [2021-11-20 06:34:21,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 06:34:21,557 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:34:21,561 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:34:21,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-20 06:34:21,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:34:21,768 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting buildErr10REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:34:21,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:34:21,769 INFO L85 PathProgramCache]: Analyzing trace with hash -815873248, now seen corresponding path program 1 times [2021-11-20 06:34:21,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:34:21,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [349435946] [2021-11-20 06:34:21,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:34:21,769 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:34:21,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:34:21,770 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:34:21,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-20 06:34:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:34:21,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:34:21,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:34:21,876 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 06:34:21,915 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 06:34:21,916 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 21 treesize of output 28 [2021-11-20 06:34:21,948 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 06:34:21,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:34:24,012 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 06:34:24,012 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:34:24,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [349435946] [2021-11-20 06:34:24,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [349435946] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:34:24,013 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:34:24,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 06:34:24,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636534031] [2021-11-20 06:34:24,013 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:34:24,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:34:24,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:34:24,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:34:24,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=9, Unknown=1, NotChecked=0, Total=20 [2021-11-20 06:34:24,015 INFO L87 Difference]: Start difference. First operand 157 states and 289 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:34:24,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:34:24,235 INFO L93 Difference]: Finished difference Result 156 states and 285 transitions. [2021-11-20 06:34:24,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:34:24,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-20 06:34:24,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:34:24,238 INFO L225 Difference]: With dead ends: 156 [2021-11-20 06:34:24,238 INFO L226 Difference]: Without dead ends: 156 [2021-11-20 06:34:24,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=10, Invalid=9, Unknown=1, NotChecked=0, Total=20 [2021-11-20 06:34:24,239 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 14 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:34:24,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 0 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 54 Unchecked, 0.2s Time] [2021-11-20 06:34:24,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-20 06:34:24,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 144. [2021-11-20 06:34:24,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 80 states have (on average 3.1875) internal successors, (255), 143 states have internal predecessors, (255), 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 06:34:24,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 255 transitions. [2021-11-20 06:34:24,247 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 255 transitions. Word has length 8 [2021-11-20 06:34:24,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:34:24,247 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 255 transitions. [2021-11-20 06:34:24,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:34:24,248 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 255 transitions. [2021-11-20 06:34:24,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 06:34:24,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:34:24,249 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:34:24,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-20 06:34:24,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:34:24,460 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting buildErr13REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:34:24,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:34:24,461 INFO L85 PathProgramCache]: Analyzing trace with hash -815873002, now seen corresponding path program 1 times [2021-11-20 06:34:24,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:34:24,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [832433350] [2021-11-20 06:34:24,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:34:24,461 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:34:24,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:34:24,462 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:34:24,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-20 06:34:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:34:24,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 06:34:24,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:34:24,592 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 06:34:24,700 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-20 06:34:24,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 39 [2021-11-20 06:34:24,727 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:34:24,727 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 33 treesize of output 33 [2021-11-20 06:34:24,797 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 06:34:24,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:34:27,055 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-20 06:34:27,055 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 40 treesize of output 39 [2021-11-20 06:34:27,191 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 24 treesize of output 22 [2021-11-20 06:34:27,237 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 06:34:27,238 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:34:27,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [832433350] [2021-11-20 06:34:27,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [832433350] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:34:27,238 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:34:27,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-20 06:34:27,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768471168] [2021-11-20 06:34:27,238 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:34:27,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:34:27,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:34:27,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:34:27,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=61, Unknown=1, NotChecked=0, Total=90 [2021-11-20 06:34:27,239 INFO L87 Difference]: Start difference. First operand 144 states and 255 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:34:27,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:34:27,686 INFO L93 Difference]: Finished difference Result 148 states and 262 transitions. [2021-11-20 06:34:27,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:34:27,687 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-20 06:34:27,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:34:27,688 INFO L225 Difference]: With dead ends: 148 [2021-11-20 06:34:27,688 INFO L226 Difference]: Without dead ends: 148 [2021-11-20 06:34:27,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=34, Invalid=75, Unknown=1, NotChecked=0, Total=110 [2021-11-20 06:34:27,689 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:34:27,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 53 Unchecked, 0.4s Time] [2021-11-20 06:34:27,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-20 06:34:27,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 143. [2021-11-20 06:34:27,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 79 states have (on average 3.2151898734177213) internal successors, (254), 142 states have internal predecessors, (254), 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 06:34:27,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 254 transitions. [2021-11-20 06:34:27,695 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 254 transitions. Word has length 8 [2021-11-20 06:34:27,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:34:27,695 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 254 transitions. [2021-11-20 06:34:27,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:34:27,695 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 254 transitions. [2021-11-20 06:34:27,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 06:34:27,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:34:27,696 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:34:27,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-20 06:34:27,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:34:27,896 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting buildErr12REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:34:27,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:34:27,897 INFO L85 PathProgramCache]: Analyzing trace with hash -816046911, now seen corresponding path program 1 times [2021-11-20 06:34:27,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:34:27,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126359550] [2021-11-20 06:34:27,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:34:27,897 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:34:27,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:34:27,898 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:34:27,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-20 06:34:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:34:28,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 06:34:28,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:34:28,010 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 06:34:28,066 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 06:34:28,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-11-20 06:34:28,107 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 06:34:28,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:34:32,170 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 06:34:32,171 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:34:32,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2126359550] [2021-11-20 06:34:32,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2126359550] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:34:32,171 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:34:32,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 5 [2021-11-20 06:34:32,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103568084] [2021-11-20 06:34:32,171 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:34:32,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:34:32,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:34:32,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:34:32,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=13, Unknown=2, NotChecked=0, Total=30 [2021-11-20 06:34:32,173 INFO L87 Difference]: Start difference. First operand 143 states and 254 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:34:32,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:34:32,401 INFO L93 Difference]: Finished difference Result 183 states and 325 transitions. [2021-11-20 06:34:32,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:34:32,401 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-20 06:34:32,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:34:32,402 INFO L225 Difference]: With dead ends: 183 [2021-11-20 06:34:32,402 INFO L226 Difference]: Without dead ends: 183 [2021-11-20 06:34:32,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=15, Invalid=13, Unknown=2, NotChecked=0, Total=30 [2021-11-20 06:34:32,403 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 26 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 94 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:34:32,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 2 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 94 Unchecked, 0.2s Time] [2021-11-20 06:34:32,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-20 06:34:32,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 140. [2021-11-20 06:34:32,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 76 states have (on average 3.263157894736842) internal successors, (248), 139 states have internal predecessors, (248), 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 06:34:32,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 248 transitions. [2021-11-20 06:34:32,409 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 248 transitions. Word has length 8 [2021-11-20 06:34:32,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:34:32,409 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 248 transitions. [2021-11-20 06:34:32,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:34:32,410 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 248 transitions. [2021-11-20 06:34:32,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 06:34:32,410 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:34:32,410 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:34:32,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-20 06:34:32,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:34:32,611 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting buildErr11REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:34:32,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:34:32,611 INFO L85 PathProgramCache]: Analyzing trace with hash -816047157, now seen corresponding path program 1 times [2021-11-20 06:34:32,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:34:32,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [557159528] [2021-11-20 06:34:32,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:34:32,612 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:34:32,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:34:32,613 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:34:32,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-20 06:34:32,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:34:32,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 06:34:32,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:34:32,732 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 06:34:32,739 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 06:34:32,783 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:34:32,783 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 06:34:32,793 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:34:32,793 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 25 [2021-11-20 06:34:32,839 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 06:34:32,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:34:35,097 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 06:34:35,097 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:34:35,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [557159528] [2021-11-20 06:34:35,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [557159528] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:34:35,098 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:34:35,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 06:34:35,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474364151] [2021-11-20 06:34:35,098 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:34:35,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:34:35,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:34:35,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:34:35,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-20 06:34:35,099 INFO L87 Difference]: Start difference. First operand 140 states and 248 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:34:35,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:34:35,419 INFO L93 Difference]: Finished difference Result 137 states and 245 transitions. [2021-11-20 06:34:35,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:34:35,420 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-20 06:34:35,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:34:35,421 INFO L225 Difference]: With dead ends: 137 [2021-11-20 06:34:35,421 INFO L226 Difference]: Without dead ends: 137 [2021-11-20 06:34:35,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-20 06:34:35,422 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:34:35,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 83 Invalid, 0 Unknown, 51 Unchecked, 0.3s Time] [2021-11-20 06:34:35,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-20 06:34:35,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 134. [2021-11-20 06:34:35,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 73 states have (on average 3.2739726027397262) internal successors, (239), 133 states have internal predecessors, (239), 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 06:34:35,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 239 transitions. [2021-11-20 06:34:35,427 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 239 transitions. Word has length 8 [2021-11-20 06:34:35,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:34:35,428 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 239 transitions. [2021-11-20 06:34:35,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:34:35,428 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 239 transitions. [2021-11-20 06:34:35,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 06:34:35,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:34:35,429 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:34:35,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-20 06:34:35,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:34:35,641 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting buildErr13REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:34:35,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:34:35,641 INFO L85 PathProgramCache]: Analyzing trace with hash -816046912, now seen corresponding path program 2 times [2021-11-20 06:34:35,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:34:35,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1506064604] [2021-11-20 06:34:35,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:34:35,642 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:34:35,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:34:35,643 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:34:35,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-20 06:34:35,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-20 06:34:35,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:34:35,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 06:34:35,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:34:35,773 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 06:34:35,870 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-20 06:34:35,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2021-11-20 06:34:35,881 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:34:35,882 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 32 treesize of output 32 [2021-11-20 06:34:35,962 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 06:34:35,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:34:38,180 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-20 06:34:38,181 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 41 treesize of output 40 [2021-11-20 06:34:38,316 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 24 treesize of output 22 [2021-11-20 06:34:38,384 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 06:34:38,384 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:34:38,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1506064604] [2021-11-20 06:34:38,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1506064604] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:34:38,384 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:34:38,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-20 06:34:38,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054057885] [2021-11-20 06:34:38,385 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:34:38,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:34:38,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:34:38,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:34:38,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=61, Unknown=1, NotChecked=0, Total=90 [2021-11-20 06:34:38,386 INFO L87 Difference]: Start difference. First operand 134 states and 239 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:34:38,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:34:38,817 INFO L93 Difference]: Finished difference Result 139 states and 244 transitions. [2021-11-20 06:34:38,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:34:38,817 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-20 06:34:38,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:34:38,818 INFO L225 Difference]: With dead ends: 139 [2021-11-20 06:34:38,819 INFO L226 Difference]: Without dead ends: 139 [2021-11-20 06:34:38,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=34, Invalid=75, Unknown=1, NotChecked=0, Total=110 [2021-11-20 06:34:38,820 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:34:38,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 128 Invalid, 0 Unknown, 93 Unchecked, 0.4s Time] [2021-11-20 06:34:38,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-20 06:34:38,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 134. [2021-11-20 06:34:38,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 73 states have (on average 3.2739726027397262) internal successors, (239), 133 states have internal predecessors, (239), 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 06:34:38,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 239 transitions. [2021-11-20 06:34:38,833 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 239 transitions. Word has length 8 [2021-11-20 06:34:38,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:34:38,833 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 239 transitions. [2021-11-20 06:34:38,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:34:38,833 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 239 transitions. [2021-11-20 06:34:38,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 06:34:38,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:34:38,834 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:34:38,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-20 06:34:39,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:34:39,046 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:34:39,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:34:39,047 INFO L85 PathProgramCache]: Analyzing trace with hash -816052258, now seen corresponding path program 1 times [2021-11-20 06:34:39,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:34:39,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [884963851] [2021-11-20 06:34:39,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:34:39,048 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:34:39,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:34:39,049 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:34:39,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-20 06:34:39,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:34:39,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 06:34:39,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:34:39,229 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:34:39,230 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 19 treesize of output 21 [2021-11-20 06:34:39,341 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-20 06:34:39,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 52 [2021-11-20 06:34:39,533 INFO L354 Elim1Store]: treesize reduction 57, result has 30.5 percent of original size [2021-11-20 06:34:39,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 78 [2021-11-20 06:34:39,896 INFO L354 Elim1Store]: treesize reduction 92, result has 26.4 percent of original size [2021-11-20 06:34:39,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 82 treesize of output 105 [2021-11-20 06:34:40,164 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 06:34:40,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:34:52,345 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 06:34:52,346 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:34:52,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [884963851] [2021-11-20 06:34:52,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [884963851] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:34:52,346 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:34:52,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 7 [2021-11-20 06:34:52,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34078668] [2021-11-20 06:34:52,347 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:34:52,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:34:52,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:34:52,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:34:52,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=32, Unknown=6, NotChecked=0, Total=72 [2021-11-20 06:34:52,348 INFO L87 Difference]: Start difference. First operand 134 states and 239 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:34:52,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:34:52,580 INFO L93 Difference]: Finished difference Result 135 states and 243 transitions. [2021-11-20 06:34:52,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:34:52,581 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-20 06:34:52,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:34:52,582 INFO L225 Difference]: With dead ends: 135 [2021-11-20 06:34:52,582 INFO L226 Difference]: Without dead ends: 135 [2021-11-20 06:34:52,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=34, Invalid=32, Unknown=6, NotChecked=0, Total=72 [2021-11-20 06:34:52,583 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:34:52,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 46 Unchecked, 0.2s Time] [2021-11-20 06:34:52,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-20 06:34:52,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2021-11-20 06:34:52,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 74 states have (on average 3.2837837837837838) internal successors, (243), 134 states have internal predecessors, (243), 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 06:34:52,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 243 transitions. [2021-11-20 06:34:52,588 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 243 transitions. Word has length 8 [2021-11-20 06:34:52,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:34:52,589 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 243 transitions. [2021-11-20 06:34:52,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:34:52,589 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 243 transitions. [2021-11-20 06:34:52,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 06:34:52,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:34:52,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:34:52,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-20 06:34:52,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:34:52,802 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:34:52,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:34:52,803 INFO L85 PathProgramCache]: Analyzing trace with hash -816052257, now seen corresponding path program 1 times [2021-11-20 06:34:52,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:34:52,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2137978050] [2021-11-20 06:34:52,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:34:52,803 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:34:52,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:34:52,804 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:34:52,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-20 06:34:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:34:52,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 06:34:52,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:34:52,938 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:34:52,939 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 28 treesize of output 30 [2021-11-20 06:34:52,954 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:34:52,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2021-11-20 06:34:53,067 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-20 06:34:53,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 51 [2021-11-20 06:34:53,089 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-20 06:34:53,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 47 [2021-11-20 06:34:53,276 INFO L354 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2021-11-20 06:34:53,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 54 [2021-11-20 06:34:54,132 INFO L354 Elim1Store]: treesize reduction 68, result has 45.6 percent of original size [2021-11-20 06:34:54,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 51 treesize of output 98 [2021-11-20 06:34:58,708 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 06:34:58,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:35:01,631 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 06:35:01,631 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:35:01,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2137978050] [2021-11-20 06:35:01,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2137978050] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:35:01,631 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:35:01,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-11-20 06:35:01,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470869138] [2021-11-20 06:35:01,632 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:35:01,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 06:35:01,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:35:01,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 06:35:01,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:35:01,633 INFO L87 Difference]: Start difference. First operand 135 states and 243 transitions. Second operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:35:02,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:35:02,137 INFO L93 Difference]: Finished difference Result 135 states and 242 transitions. [2021-11-20 06:35:02,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:35:02,138 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-20 06:35:02,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:35:02,139 INFO L225 Difference]: With dead ends: 135 [2021-11-20 06:35:02,139 INFO L226 Difference]: Without dead ends: 135 [2021-11-20 06:35:02,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:35:02,140 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:35:02,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 85 Unchecked, 0.5s Time] [2021-11-20 06:35:02,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-20 06:35:02,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2021-11-20 06:35:02,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 74 states have (on average 3.27027027027027) internal successors, (242), 134 states have internal predecessors, (242), 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 06:35:02,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 242 transitions. [2021-11-20 06:35:02,145 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 242 transitions. Word has length 8 [2021-11-20 06:35:02,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:35:02,145 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 242 transitions. [2021-11-20 06:35:02,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:35:02,145 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 242 transitions. [2021-11-20 06:35:02,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 06:35:02,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:35:02,146 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:35:02,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-20 06:35:02,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:35:02,358 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting buildErr13REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:35:02,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:35:02,358 INFO L85 PathProgramCache]: Analyzing trace with hash -816045982, now seen corresponding path program 3 times [2021-11-20 06:35:02,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:35:02,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429540186] [2021-11-20 06:35:02,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 06:35:02,359 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:35:02,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:35:02,359 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:35:02,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-20 06:35:02,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-20 06:35:02,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:35:02,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 06:35:02,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:35:02,493 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 06:35:02,620 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-20 06:35:02,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2021-11-20 06:35:02,632 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:35:02,632 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 32 treesize of output 32 [2021-11-20 06:35:02,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:35:02,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:35:04,957 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-20 06:35:04,958 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 40 treesize of output 39 [2021-11-20 06:35:05,106 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 24 treesize of output 22 [2021-11-20 06:35:05,155 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 06:35:05,156 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:35:05,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429540186] [2021-11-20 06:35:05,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429540186] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:35:05,156 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:35:05,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-20 06:35:05,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534292395] [2021-11-20 06:35:05,157 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:35:05,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:35:05,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:35:05,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:35:05,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=61, Unknown=1, NotChecked=0, Total=90 [2021-11-20 06:35:05,159 INFO L87 Difference]: Start difference. First operand 135 states and 242 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:35:05,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:35:05,583 INFO L93 Difference]: Finished difference Result 141 states and 248 transitions. [2021-11-20 06:35:05,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:35:05,584 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-20 06:35:05,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:35:05,584 INFO L225 Difference]: With dead ends: 141 [2021-11-20 06:35:05,585 INFO L226 Difference]: Without dead ends: 141 [2021-11-20 06:35:05,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=34, Invalid=75, Unknown=1, NotChecked=0, Total=110 [2021-11-20 06:35:05,585 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 143 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:35:05,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 129 Invalid, 0 Unknown, 143 Unchecked, 0.4s Time] [2021-11-20 06:35:05,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-20 06:35:05,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 135. [2021-11-20 06:35:05,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 74 states have (on average 3.27027027027027) internal successors, (242), 134 states have internal predecessors, (242), 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 06:35:05,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 242 transitions. [2021-11-20 06:35:05,590 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 242 transitions. Word has length 8 [2021-11-20 06:35:05,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:35:05,591 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 242 transitions. [2021-11-20 06:35:05,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:35:05,591 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 242 transitions. [2021-11-20 06:35:05,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 06:35:05,592 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:35:05,592 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:35:05,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-20 06:35:05,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:35:05,804 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:35:05,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:35:05,804 INFO L85 PathProgramCache]: Analyzing trace with hash 472186572, now seen corresponding path program 1 times [2021-11-20 06:35:05,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:35:05,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893803049] [2021-11-20 06:35:05,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:35:05,805 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:35:05,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:35:05,806 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:35:05,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-20 06:35:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:35:05,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 06:35:05,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:35:05,928 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:35:05,928 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 21 treesize of output 23 [2021-11-20 06:35:06,028 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-20 06:35:06,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 41 [2021-11-20 06:35:06,173 INFO L354 Elim1Store]: treesize reduction 57, result has 30.5 percent of original size [2021-11-20 06:35:06,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 67 [2021-11-20 06:35:06,406 INFO L354 Elim1Store]: treesize reduction 92, result has 26.4 percent of original size [2021-11-20 06:35:06,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 85 [2021-11-20 06:35:06,643 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 06:35:06,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:35:06,866 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 06:35:06,867 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:35:06,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893803049] [2021-11-20 06:35:06,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1893803049] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:35:06,867 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:35:06,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 9 [2021-11-20 06:35:06,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040734335] [2021-11-20 06:35:06,867 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:35:06,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 06:35:06,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:35:06,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 06:35:06,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:35:06,869 INFO L87 Difference]: Start difference. First operand 135 states and 242 transitions. Second operand has 11 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:35:06,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:35:06,974 INFO L93 Difference]: Finished difference Result 141 states and 271 transitions. [2021-11-20 06:35:06,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:35:06,974 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-20 06:35:06,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:35:06,975 INFO L225 Difference]: With dead ends: 141 [2021-11-20 06:35:06,975 INFO L226 Difference]: Without dead ends: 141 [2021-11-20 06:35:06,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:35:06,976 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:35:06,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 81 Unchecked, 0.1s Time] [2021-11-20 06:35:06,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-20 06:35:06,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 140. [2021-11-20 06:35:06,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 79 states have (on average 3.3797468354430378) internal successors, (267), 139 states have internal predecessors, (267), 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 06:35:06,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 267 transitions. [2021-11-20 06:35:06,981 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 267 transitions. Word has length 9 [2021-11-20 06:35:06,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:35:06,981 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 267 transitions. [2021-11-20 06:35:06,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:35:06,982 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 267 transitions. [2021-11-20 06:35:06,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 06:35:06,982 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:35:06,982 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:35:06,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-20 06:35:07,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:35:07,194 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:35:07,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:35:07,194 INFO L85 PathProgramCache]: Analyzing trace with hash 472186573, now seen corresponding path program 1 times [2021-11-20 06:35:07,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:35:07,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1058029390] [2021-11-20 06:35:07,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:35:07,195 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:35:07,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:35:07,197 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:35:07,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-20 06:35:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:35:07,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-20 06:35:07,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:35:07,369 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:35:07,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2021-11-20 06:35:07,372 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 20 treesize of output 18 [2021-11-20 06:35:07,455 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-20 06:35:07,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 26 [2021-11-20 06:35:07,572 INFO L354 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2021-11-20 06:35:07,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 46 [2021-11-20 06:35:07,899 INFO L354 Elim1Store]: treesize reduction 68, result has 45.6 percent of original size [2021-11-20 06:35:07,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 43 treesize of output 90 [2021-11-20 06:35:12,279 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 06:35:12,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:35:13,489 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 06:35:13,489 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:35:13,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1058029390] [2021-11-20 06:35:13,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1058029390] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:35:13,489 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:35:13,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-11-20 06:35:13,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654373525] [2021-11-20 06:35:13,490 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:35:13,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:35:13,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:35:13,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:35:13,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=105, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:35:13,490 INFO L87 Difference]: Start difference. First operand 140 states and 267 transitions. Second operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:35:14,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:35:14,150 INFO L93 Difference]: Finished difference Result 147 states and 297 transitions. [2021-11-20 06:35:14,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 06:35:14,151 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-20 06:35:14,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:35:14,152 INFO L225 Difference]: With dead ends: 147 [2021-11-20 06:35:14,152 INFO L226 Difference]: Without dead ends: 147 [2021-11-20 06:35:14,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=77, Invalid=105, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:35:14,153 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 06:35:14,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 131 Invalid, 0 Unknown, 117 Unchecked, 0.7s Time] [2021-11-20 06:35:14,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-20 06:35:14,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2021-11-20 06:35:14,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 85 states have (on average 3.458823529411765) internal successors, (294), 145 states have internal predecessors, (294), 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 06:35:14,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 294 transitions. [2021-11-20 06:35:14,157 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 294 transitions. Word has length 9 [2021-11-20 06:35:14,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:35:14,157 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 294 transitions. [2021-11-20 06:35:14,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:35:14,157 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 294 transitions. [2021-11-20 06:35:14,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 06:35:14,158 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:35:14,158 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:35:14,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-20 06:35:14,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:35:14,370 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting buildErr1REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:35:14,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:35:14,370 INFO L85 PathProgramCache]: Analyzing trace with hash 472186616, now seen corresponding path program 1 times [2021-11-20 06:35:14,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:35:14,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1248208911] [2021-11-20 06:35:14,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:35:14,371 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:35:14,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:35:14,372 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:35:14,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-20 06:35:14,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:35:14,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-20 06:35:14,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:35:14,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:35:14,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:35:14,752 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:35:14,753 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 52 treesize of output 56 [2021-11-20 06:35:14,771 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-20 06:35:14,771 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 56 treesize of output 55 [2021-11-20 06:35:15,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:35:15,070 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:35:15,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1248208911] [2021-11-20 06:35:15,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1248208911] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 06:35:15,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:35:15,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2021-11-20 06:35:15,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220508157] [2021-11-20 06:35:15,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:35:15,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:35:15,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:35:15,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:35:15,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:35:15,072 INFO L87 Difference]: Start difference. First operand 146 states and 294 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:35:15,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:35:15,340 INFO L93 Difference]: Finished difference Result 159 states and 308 transitions. [2021-11-20 06:35:15,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:35:15,341 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-20 06:35:15,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:35:15,342 INFO L225 Difference]: With dead ends: 159 [2021-11-20 06:35:15,342 INFO L226 Difference]: Without dead ends: 159 [2021-11-20 06:35:15,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:35:15,343 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 71 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:35:15,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 0 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:35:15,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-20 06:35:15,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 128. [2021-11-20 06:35:15,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 76 states have (on average 3.3552631578947367) internal successors, (255), 127 states have internal predecessors, (255), 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 06:35:15,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 255 transitions. [2021-11-20 06:35:15,348 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 255 transitions. Word has length 9 [2021-11-20 06:35:15,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:35:15,349 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 255 transitions. [2021-11-20 06:35:15,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:35:15,349 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 255 transitions. [2021-11-20 06:35:15,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 06:35:15,349 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:35:15,350 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:35:15,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-11-20 06:35:15,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:35:15,561 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:35:15,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:35:15,562 INFO L85 PathProgramCache]: Analyzing trace with hash 472187068, now seen corresponding path program 1 times [2021-11-20 06:35:15,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:35:15,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904342312] [2021-11-20 06:35:15,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:35:15,562 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:35:15,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:35:15,563 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:35:15,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-20 06:35:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:35:15,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 06:35:15,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:35:15,682 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:35:15,682 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 19 treesize of output 21 [2021-11-20 06:35:15,751 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-20 06:35:15,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 41 [2021-11-20 06:35:15,848 INFO L354 Elim1Store]: treesize reduction 57, result has 30.5 percent of original size [2021-11-20 06:35:15,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 69 [2021-11-20 06:35:16,112 INFO L354 Elim1Store]: treesize reduction 92, result has 26.4 percent of original size [2021-11-20 06:35:16,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 73 treesize of output 96 [2021-11-20 06:35:16,442 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 06:35:16,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:35:16,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:35:16,664 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:35:16,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904342312] [2021-11-20 06:35:16,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1904342312] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:35:16,665 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:35:16,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 9 [2021-11-20 06:35:16,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220169308] [2021-11-20 06:35:16,665 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:35:16,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 06:35:16,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:35:16,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 06:35:16,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:35:16,666 INFO L87 Difference]: Start difference. First operand 128 states and 255 transitions. Second operand has 11 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:35:16,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:35:16,885 INFO L93 Difference]: Finished difference Result 129 states and 257 transitions. [2021-11-20 06:35:16,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:35:16,886 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-20 06:35:16,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:35:16,887 INFO L225 Difference]: With dead ends: 129 [2021-11-20 06:35:16,887 INFO L226 Difference]: Without dead ends: 129 [2021-11-20 06:35:16,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:35:16,888 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 143 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:35:16,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 0 Unknown, 143 Unchecked, 0.2s Time] [2021-11-20 06:35:16,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-20 06:35:16,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-11-20 06:35:16,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 77 states have (on average 3.3376623376623376) internal successors, (257), 128 states have internal predecessors, (257), 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 06:35:16,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 257 transitions. [2021-11-20 06:35:16,892 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 257 transitions. Word has length 9 [2021-11-20 06:35:16,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:35:16,892 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 257 transitions. [2021-11-20 06:35:16,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:35:16,892 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 257 transitions. [2021-11-20 06:35:16,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 06:35:16,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:35:16,893 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:35:16,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-20 06:35:17,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:35:17,093 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:35:17,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:35:17,094 INFO L85 PathProgramCache]: Analyzing trace with hash 472187069, now seen corresponding path program 1 times [2021-11-20 06:35:17,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:35:17,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1870426767] [2021-11-20 06:35:17,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:35:17,094 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:35:17,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:35:17,095 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:35:17,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-20 06:35:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:35:17,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-20 06:35:17,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:35:17,225 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:35:17,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2021-11-20 06:35:17,229 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 22 treesize of output 20 [2021-11-20 06:35:17,315 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-20 06:35:17,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 26 [2021-11-20 06:35:17,430 INFO L354 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2021-11-20 06:35:17,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 46 [2021-11-20 06:35:17,765 INFO L354 Elim1Store]: treesize reduction 68, result has 45.6 percent of original size [2021-11-20 06:35:17,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 43 treesize of output 90 [2021-11-20 06:35:22,237 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 06:35:22,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:35:23,619 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 06:35:23,619 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:35:23,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1870426767] [2021-11-20 06:35:23,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1870426767] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:35:23,620 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:35:23,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-11-20 06:35:23,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634093763] [2021-11-20 06:35:23,620 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:35:23,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:35:23,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:35:23,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:35:23,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=105, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:35:23,621 INFO L87 Difference]: Start difference. First operand 129 states and 257 transitions. Second operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:35:23,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:35:23,777 INFO L93 Difference]: Finished difference Result 129 states and 256 transitions. [2021-11-20 06:35:23,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:35:23,777 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-20 06:35:23,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:35:23,778 INFO L225 Difference]: With dead ends: 129 [2021-11-20 06:35:23,778 INFO L226 Difference]: Without dead ends: 129 [2021-11-20 06:35:23,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=77, Invalid=105, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:35:23,780 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:35:23,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 44 Unchecked, 0.2s Time] [2021-11-20 06:35:23,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-20 06:35:23,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-11-20 06:35:23,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 77 states have (on average 3.324675324675325) internal successors, (256), 128 states have internal predecessors, (256), 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 06:35:23,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 256 transitions. [2021-11-20 06:35:23,784 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 256 transitions. Word has length 9 [2021-11-20 06:35:23,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:35:23,784 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 256 transitions. [2021-11-20 06:35:23,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:35:23,785 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 256 transitions. [2021-11-20 06:35:23,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-20 06:35:23,785 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:35:23,785 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:35:23,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-20 06:35:23,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:35:23,998 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting buildErr8REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:35:23,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:35:23,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1752883787, now seen corresponding path program 1 times [2021-11-20 06:35:23,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:35:23,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1479286401] [2021-11-20 06:35:23,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:35:23,999 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:35:23,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:35:24,000 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:35:24,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-11-20 06:35:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:35:24,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-20 06:35:24,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:35:24,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-20 06:35:24,231 INFO L354 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2021-11-20 06:35:24,232 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 23 treesize of output 28 [2021-11-20 06:35:24,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:35:24,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:35:24,313 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 42 treesize of output 38 [2021-11-20 06:35:24,420 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-20 06:35:24,420 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 39 treesize of output 36 [2021-11-20 06:35:24,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:35:24,469 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:35:24,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1479286401] [2021-11-20 06:35:24,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1479286401] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:35:24,469 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:35:24,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-11-20 06:35:24,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229793249] [2021-11-20 06:35:24,469 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:35:24,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 06:35:24,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:35:24,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 06:35:24,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:35:24,470 INFO L87 Difference]: Start difference. First operand 129 states and 256 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:35:24,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:35:24,969 INFO L93 Difference]: Finished difference Result 152 states and 293 transitions. [2021-11-20 06:35:24,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:35:24,970 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-20 06:35:24,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:35:24,971 INFO L225 Difference]: With dead ends: 152 [2021-11-20 06:35:24,971 INFO L226 Difference]: Without dead ends: 152 [2021-11-20 06:35:24,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:35:24,972 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 80 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:35:24,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 0 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 142 Invalid, 0 Unknown, 63 Unchecked, 0.5s Time] [2021-11-20 06:35:24,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-20 06:35:24,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 125. [2021-11-20 06:35:24,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 76 states have (on average 3.25) internal successors, (247), 124 states have internal predecessors, (247), 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 06:35:24,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 247 transitions. [2021-11-20 06:35:24,978 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 247 transitions. Word has length 10 [2021-11-20 06:35:24,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:35:24,979 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 247 transitions. [2021-11-20 06:35:24,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:35:24,979 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 247 transitions. [2021-11-20 06:35:24,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-20 06:35:24,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:35:24,980 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:35:24,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-11-20 06:35:25,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:35:25,180 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting buildErr9REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:35:25,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:35:25,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1752883788, now seen corresponding path program 1 times [2021-11-20 06:35:25,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:35:25,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489073624] [2021-11-20 06:35:25,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:35:25,181 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:35:25,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:35:25,182 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:35:25,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-20 06:35:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:35:25,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-20 06:35:25,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:35:25,416 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 06:35:25,427 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 11 treesize of output 7 [2021-11-20 06:35:25,479 INFO L354 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-11-20 06:35:25,479 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 16 treesize of output 26 [2021-11-20 06:35:25,510 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-11-20 06:35:25,511 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 20 treesize of output 20 [2021-11-20 06:35:25,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:35:25,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:35:25,859 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 107 treesize of output 103 [2021-11-20 06:35:25,874 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 152 treesize of output 136 [2021-11-20 06:35:31,585 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 63 treesize of output 59 [2021-11-20 06:35:31,602 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-20 06:35:31,602 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 59 treesize of output 58 [2021-11-20 06:35:33,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:35:33,770 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:35:33,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489073624] [2021-11-20 06:35:33,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1489073624] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:35:33,770 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:35:33,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-11-20 06:35:33,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216899265] [2021-11-20 06:35:33,770 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:35:33,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:35:33,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:35:33,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:35:33,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=64, Unknown=3, NotChecked=0, Total=90 [2021-11-20 06:35:33,771 INFO L87 Difference]: Start difference. First operand 125 states and 247 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 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 06:35:36,362 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:35:36,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:35:36,765 INFO L93 Difference]: Finished difference Result 151 states and 288 transitions. [2021-11-20 06:35:36,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:35:36,766 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 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 10 [2021-11-20 06:35:36,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:35:36,767 INFO L225 Difference]: With dead ends: 151 [2021-11-20 06:35:36,767 INFO L226 Difference]: Without dead ends: 151 [2021-11-20 06:35:36,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=50, Invalid=103, Unknown=3, NotChecked=0, Total=156 [2021-11-20 06:35:36,768 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 133 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 83 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-20 06:35:36,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 0 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 161 Invalid, 1 Unknown, 83 Unchecked, 2.7s Time] [2021-11-20 06:35:36,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-20 06:35:36,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 124. [2021-11-20 06:35:36,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 77 states have (on average 3.142857142857143) internal successors, (242), 123 states have internal predecessors, (242), 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 06:35:36,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 242 transitions. [2021-11-20 06:35:36,773 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 242 transitions. Word has length 10 [2021-11-20 06:35:36,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:35:36,773 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 242 transitions. [2021-11-20 06:35:36,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 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 06:35:36,774 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 242 transitions. [2021-11-20 06:35:36,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-20 06:35:36,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:35:36,774 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:35:36,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2021-11-20 06:35:36,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:35:36,988 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:35:36,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:35:36,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1752883708, now seen corresponding path program 2 times [2021-11-20 06:35:36,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:35:36,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940917684] [2021-11-20 06:35:36,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:35:36,989 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:35:36,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:35:36,990 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:35:36,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-11-20 06:35:37,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:35:37,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:35:37,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 06:35:37,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:35:37,174 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:35:37,175 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 20 treesize of output 22 [2021-11-20 06:35:37,297 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-20 06:35:37,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 53 [2021-11-20 06:35:37,491 INFO L354 Elim1Store]: treesize reduction 57, result has 30.5 percent of original size [2021-11-20 06:35:37,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 80 [2021-11-20 06:35:37,883 INFO L354 Elim1Store]: treesize reduction 92, result has 26.4 percent of original size [2021-11-20 06:35:37,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 98 treesize of output 121 [2021-11-20 06:35:38,562 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:35:38,568 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:35:38,574 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:35:38,579 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:35:38,586 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:35:38,602 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:35:38,718 INFO L354 Elim1Store]: treesize reduction 135, result has 23.3 percent of original size [2021-11-20 06:35:38,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 134 treesize of output 163 [2021-11-20 06:35:40,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:35:40,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:35:45,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:35:45,241 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:35:45,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940917684] [2021-11-20 06:35:45,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940917684] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 06:35:45,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:35:45,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2021-11-20 06:35:45,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023446525] [2021-11-20 06:35:45,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:35:45,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:35:45,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:35:45,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:35:45,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=37, Unknown=1, NotChecked=0, Total=72 [2021-11-20 06:35:45,242 INFO L87 Difference]: Start difference. First operand 124 states and 242 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 06:35:45,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:35:45,433 INFO L93 Difference]: Finished difference Result 143 states and 265 transitions. [2021-11-20 06:35:45,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:35:45,433 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2021-11-20 06:35:45,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:35:45,435 INFO L225 Difference]: With dead ends: 143 [2021-11-20 06:35:45,435 INFO L226 Difference]: Without dead ends: 143 [2021-11-20 06:35:45,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=34, Invalid=37, Unknown=1, NotChecked=0, Total=72 [2021-11-20 06:35:45,435 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:35:45,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 39 Unchecked, 0.2s Time] [2021-11-20 06:35:45,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-20 06:35:45,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 113. [2021-11-20 06:35:45,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 67 states have (on average 3.044776119402985) internal successors, (204), 112 states have internal predecessors, (204), 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 06:35:45,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 204 transitions. [2021-11-20 06:35:45,439 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 204 transitions. Word has length 10 [2021-11-20 06:35:45,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:35:45,439 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 204 transitions. [2021-11-20 06:35:45,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 06:35:45,440 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 204 transitions. [2021-11-20 06:35:45,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-20 06:35:45,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:35:45,440 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:35:45,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-11-20 06:35:45,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:35:45,652 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:35:45,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:35:45,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1752883709, now seen corresponding path program 2 times [2021-11-20 06:35:45,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:35:45,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [350885730] [2021-11-20 06:35:45,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:35:45,653 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:35:45,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:35:45,654 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:35:45,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-20 06:35:45,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:35:45,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:35:45,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-20 06:35:45,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:35:45,832 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:35:45,832 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 29 treesize of output 31 [2021-11-20 06:35:45,854 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:35:45,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2021-11-20 06:35:45,974 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-20 06:35:45,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 54 [2021-11-20 06:35:46,007 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-20 06:35:46,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 50 [2021-11-20 06:35:46,216 INFO L354 Elim1Store]: treesize reduction 58, result has 29.3 percent of original size [2021-11-20 06:35:46,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 53 [2021-11-20 06:35:47,558 INFO L354 Elim1Store]: treesize reduction 80, result has 36.0 percent of original size [2021-11-20 06:35:47,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 91 [2021-11-20 06:35:56,453 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:35:56,752 INFO L354 Elim1Store]: treesize reduction 106, result has 39.8 percent of original size [2021-11-20 06:35:56,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 67 treesize of output 125 [2021-11-20 06:36:08,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:36:08,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:36:14,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:36:14,063 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:36:14,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [350885730] [2021-11-20 06:36:14,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [350885730] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 06:36:14,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:36:14,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2021-11-20 06:36:14,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862020617] [2021-11-20 06:36:14,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:36:14,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:36:14,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:36:14,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:36:14,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=64, Unknown=4, NotChecked=0, Total=110 [2021-11-20 06:36:14,065 INFO L87 Difference]: Start difference. First operand 113 states and 204 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 06:36:20,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:36:20,628 INFO L93 Difference]: Finished difference Result 123 states and 221 transitions. [2021-11-20 06:36:20,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:36:20,629 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 10 [2021-11-20 06:36:20,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:36:20,629 INFO L225 Difference]: With dead ends: 123 [2021-11-20 06:36:20,630 INFO L226 Difference]: Without dead ends: 123 [2021-11-20 06:36:20,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=61, Invalid=88, Unknown=7, NotChecked=0, Total=156 [2021-11-20 06:36:20,630 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:36:20,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 75 Unchecked, 0.2s Time] [2021-11-20 06:36:20,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-20 06:36:20,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 112. [2021-11-20 06:36:20,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 66 states have (on average 3.015151515151515) internal successors, (199), 111 states have internal predecessors, (199), 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 06:36:20,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 199 transitions. [2021-11-20 06:36:20,635 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 199 transitions. Word has length 10 [2021-11-20 06:36:20,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:36:20,635 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 199 transitions. [2021-11-20 06:36:20,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 06:36:20,635 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 199 transitions. [2021-11-20 06:36:20,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 06:36:20,636 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:36:20,636 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:36:20,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-11-20 06:36:20,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:36:20,849 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:36:20,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:36:20,849 INFO L85 PathProgramCache]: Analyzing trace with hash 908284955, now seen corresponding path program 1 times [2021-11-20 06:36:20,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:36:20,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [575731864] [2021-11-20 06:36:20,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:36:20,850 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:36:20,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:36:20,860 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:36:20,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-11-20 06:36:20,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:36:20,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 06:36:20,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:36:20,990 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:36:20,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-11-20 06:36:21,030 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:36:21,031 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 16 treesize of output 21 [2021-11-20 06:36:21,093 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-20 06:36:21,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2021-11-20 06:36:21,234 INFO L354 Elim1Store]: treesize reduction 57, result has 30.5 percent of original size [2021-11-20 06:36:21,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 77 [2021-11-20 06:36:21,402 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 06:36:21,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:36:21,604 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 06:36:21,604 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:36:21,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [575731864] [2021-11-20 06:36:21,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [575731864] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:36:21,605 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:36:21,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 8 [2021-11-20 06:36:21,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461956300] [2021-11-20 06:36:21,605 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:36:21,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:36:21,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:36:21,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:36:21,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:36:21,606 INFO L87 Difference]: Start difference. First operand 112 states and 199 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 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 06:36:21,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:36:21,831 INFO L93 Difference]: Finished difference Result 134 states and 221 transitions. [2021-11-20 06:36:21,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:36:21,836 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 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 11 [2021-11-20 06:36:21,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:36:21,837 INFO L225 Difference]: With dead ends: 134 [2021-11-20 06:36:21,837 INFO L226 Difference]: Without dead ends: 134 [2021-11-20 06:36:21,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:36:21,837 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 85 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 161 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:36:21,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 0 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 82 Invalid, 0 Unknown, 161 Unchecked, 0.2s Time] [2021-11-20 06:36:21,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-20 06:36:21,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 116. [2021-11-20 06:36:21,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 76 states have (on average 2.710526315789474) internal successors, (206), 115 states have internal predecessors, (206), 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 06:36:21,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 206 transitions. [2021-11-20 06:36:21,842 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 206 transitions. Word has length 11 [2021-11-20 06:36:21,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:36:21,842 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 206 transitions. [2021-11-20 06:36:21,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 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 06:36:21,842 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 206 transitions. [2021-11-20 06:36:21,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 06:36:21,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:36:21,843 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:36:21,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-11-20 06:36:22,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:36:22,055 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:36:22,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:36:22,056 INFO L85 PathProgramCache]: Analyzing trace with hash 908284957, now seen corresponding path program 1 times [2021-11-20 06:36:22,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:36:22,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166536461] [2021-11-20 06:36:22,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:36:22,056 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:36:22,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:36:22,057 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:36:22,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-11-20 06:36:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:36:22,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 06:36:22,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:36:22,212 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:36:22,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2021-11-20 06:36:22,234 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:36:22,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 24 [2021-11-20 06:36:22,322 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:36:22,322 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 29 treesize of output 31 [2021-11-20 06:36:22,333 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:36:22,333 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 28 treesize of output 28 [2021-11-20 06:36:22,416 INFO L354 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2021-11-20 06:36:22,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 40 [2021-11-20 06:36:22,420 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 34 treesize of output 33 [2021-11-20 06:36:22,847 INFO L354 Elim1Store]: treesize reduction 58, result has 29.3 percent of original size [2021-11-20 06:36:22,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 66 [2021-11-20 06:36:22,862 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:36:22,862 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 63 treesize of output 63 [2021-11-20 06:36:24,029 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 06:36:24,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:36:26,535 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 30 treesize of output 28 [2021-11-20 06:36:30,954 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_buildThread1of1ForFork1_~#list~0#1.base_86| (_ BitVec 32)) (|v_buildThread1of1ForFork1_append_~elem~0#1.base_242| (_ BitVec 32)) (|v_buildThread1of1ForFork1_append_#t~ite8#1.base_174| (_ BitVec 32))) (or (= |v_buildThread1of1ForFork1_append_~elem~0#1.base_242| |v_buildThread1of1ForFork1_append_#t~ite8#1.base_174|) (let ((.cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#id2~0#1.offset|))) (and (bvule .cse0 (select (store (store (store |c_#length| |v_buildThread1of1ForFork1_~#list~0#1.base_86| (_ bv4 32)) |v_buildThread1of1ForFork1_append_~elem~0#1.base_242| (_ bv8 32)) |v_buildThread1of1ForFork1_append_#t~ite8#1.base_174| (_ bv8 32)) |c_ULTIMATE.start_main_~#id2~0#1.base|)) (bvule |c_ULTIMATE.start_main_~#id2~0#1.offset| .cse0))) (not (= (_ bv0 1) (select |c_#valid| |v_buildThread1of1ForFork1_~#list~0#1.base_86|))))) is different from false [2021-11-20 06:36:31,321 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 06:36:31,321 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:36:31,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166536461] [2021-11-20 06:36:31,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1166536461] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:36:31,321 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:36:31,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-11-20 06:36:31,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537236847] [2021-11-20 06:36:31,322 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:36:31,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:36:31,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:36:31,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:36:31,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=42, Unknown=3, NotChecked=14, Total=90 [2021-11-20 06:36:31,323 INFO L87 Difference]: Start difference. First operand 116 states and 206 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:36:31,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:36:31,721 INFO L93 Difference]: Finished difference Result 129 states and 221 transitions. [2021-11-20 06:36:31,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:36:31,722 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-20 06:36:31,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:36:31,723 INFO L225 Difference]: With dead ends: 129 [2021-11-20 06:36:31,723 INFO L226 Difference]: Without dead ends: 129 [2021-11-20 06:36:31,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=38, Invalid=53, Unknown=3, NotChecked=16, Total=110 [2021-11-20 06:36:31,724 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 23 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 136 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:36:31,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 0 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 0 Unknown, 136 Unchecked, 0.3s Time] [2021-11-20 06:36:31,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-20 06:36:31,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 122. [2021-11-20 06:36:31,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 82 states have (on average 2.597560975609756) internal successors, (213), 121 states have internal predecessors, (213), 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 06:36:31,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 213 transitions. [2021-11-20 06:36:31,728 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 213 transitions. Word has length 11 [2021-11-20 06:36:31,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:36:31,728 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 213 transitions. [2021-11-20 06:36:31,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:36:31,729 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 213 transitions. [2021-11-20 06:36:31,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 06:36:31,729 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:36:31,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:36:31,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2021-11-20 06:36:31,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:36:31,940 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:36:31,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:36:31,941 INFO L85 PathProgramCache]: Analyzing trace with hash -459423315, now seen corresponding path program 2 times [2021-11-20 06:36:31,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:36:31,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [955913263] [2021-11-20 06:36:31,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:36:31,941 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:36:31,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:36:31,942 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:36:31,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-11-20 06:36:32,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-20 06:36:32,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:36:32,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 06:36:32,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:36:32,087 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:36:32,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2021-11-20 06:36:32,105 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:36:32,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 24 [2021-11-20 06:36:32,200 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:36:32,201 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 28 treesize of output 30 [2021-11-20 06:36:32,214 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:36:32,215 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 27 treesize of output 27 [2021-11-20 06:36:32,301 INFO L354 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2021-11-20 06:36:32,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 34 [2021-11-20 06:36:32,565 INFO L354 Elim1Store]: treesize reduction 42, result has 48.8 percent of original size [2021-11-20 06:36:32,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 66 [2021-11-20 06:36:34,550 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 06:36:34,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:36:36,725 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 06:36:36,726 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:36:36,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [955913263] [2021-11-20 06:36:36,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [955913263] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:36:36,726 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:36:36,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-11-20 06:36:36,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128744173] [2021-11-20 06:36:36,726 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:36:36,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 06:36:36,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:36:36,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 06:36:36,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:36:36,728 INFO L87 Difference]: Start difference. First operand 122 states and 213 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:36:36,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:36:36,897 INFO L93 Difference]: Finished difference Result 130 states and 223 transitions. [2021-11-20 06:36:36,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:36:36,897 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-20 06:36:36,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:36:36,898 INFO L225 Difference]: With dead ends: 130 [2021-11-20 06:36:36,898 INFO L226 Difference]: Without dead ends: 130 [2021-11-20 06:36:36,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-11-20 06:36:36,899 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:36:36,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 54 Unchecked, 0.1s Time] [2021-11-20 06:36:36,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-20 06:36:36,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 119. [2021-11-20 06:36:36,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 79 states have (on average 2.6582278481012658) internal successors, (210), 118 states have internal predecessors, (210), 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 06:36:36,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 210 transitions. [2021-11-20 06:36:36,903 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 210 transitions. Word has length 11 [2021-11-20 06:36:36,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:36:36,904 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 210 transitions. [2021-11-20 06:36:36,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:36:36,904 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 210 transitions. [2021-11-20 06:36:36,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 06:36:36,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:36:36,905 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:36:36,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-11-20 06:36:37,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:36:37,116 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:36:37,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:36:37,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1497342929, now seen corresponding path program 3 times [2021-11-20 06:36:37,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:36:37,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2111084420] [2021-11-20 06:36:37,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 06:36:37,117 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:36:37,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:36:37,118 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:36:37,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-11-20 06:36:37,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-20 06:36:37,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:36:37,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 06:36:37,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:36:37,306 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:36:37,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 23 [2021-11-20 06:36:37,326 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:36:37,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-11-20 06:36:37,406 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:36:37,406 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 06:36:37,418 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:36:37,418 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 25 [2021-11-20 06:36:37,515 INFO L354 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2021-11-20 06:36:37,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 34 [2021-11-20 06:36:37,770 INFO L354 Elim1Store]: treesize reduction 42, result has 48.8 percent of original size [2021-11-20 06:36:37,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 66 [2021-11-20 06:36:40,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:36:40,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:36:41,170 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 06:36:41,170 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:36:41,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2111084420] [2021-11-20 06:36:41,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2111084420] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:36:41,170 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:36:41,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-11-20 06:36:41,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141433725] [2021-11-20 06:36:41,171 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:36:41,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 06:36:41,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:36:41,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 06:36:41,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:36:41,172 INFO L87 Difference]: Start difference. First operand 119 states and 210 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:36:46,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:36:46,098 INFO L93 Difference]: Finished difference Result 112 states and 179 transitions. [2021-11-20 06:36:46,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 06:36:46,100 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-20 06:36:46,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:36:46,100 INFO L225 Difference]: With dead ends: 112 [2021-11-20 06:36:46,100 INFO L226 Difference]: Without dead ends: 112 [2021-11-20 06:36:46,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=74, Invalid=106, Unknown=2, NotChecked=0, Total=182 [2021-11-20 06:36:46,101 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:36:46,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 73 Unchecked, 0.2s Time] [2021-11-20 06:36:46,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-11-20 06:36:46,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 99. [2021-11-20 06:36:46,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 73 states have (on average 2.2465753424657535) internal successors, (164), 98 states have internal predecessors, (164), 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 06:36:46,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 164 transitions. [2021-11-20 06:36:46,104 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 164 transitions. Word has length 11 [2021-11-20 06:36:46,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:36:46,104 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 164 transitions. [2021-11-20 06:36:46,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:36:46,104 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 164 transitions. [2021-11-20 06:36:46,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 06:36:46,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:36:46,104 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:36:46,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-11-20 06:36:46,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:36:46,320 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting buildErr9REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:36:46,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:36:46,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1495220240, now seen corresponding path program 1 times [2021-11-20 06:36:46,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:36:46,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129705662] [2021-11-20 06:36:46,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:36:46,321 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:36:46,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:36:46,322 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:36:46,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-11-20 06:36:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:36:46,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-20 06:36:46,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:36:46,552 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 06:36:46,561 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 11 treesize of output 7 [2021-11-20 06:36:46,624 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-11-20 06:36:46,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2021-11-20 06:36:46,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-20 06:36:46,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:36:46,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:36:47,130 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 109 treesize of output 105 [2021-11-20 06:36:47,135 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 154 treesize of output 138 [2021-11-20 06:36:55,777 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 65 treesize of output 61 [2021-11-20 06:36:55,800 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-20 06:36:55,800 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 61 treesize of output 60 [2021-11-20 06:36:57,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:36:57,967 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:36:57,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129705662] [2021-11-20 06:36:57,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [129705662] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:36:57,968 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:36:57,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-11-20 06:36:57,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224666216] [2021-11-20 06:36:57,968 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:36:57,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:36:57,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:36:57,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:36:57,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=63, Unknown=4, NotChecked=0, Total=90 [2021-11-20 06:36:57,969 INFO L87 Difference]: Start difference. First operand 99 states and 164 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:36:58,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:36:58,743 INFO L93 Difference]: Finished difference Result 105 states and 171 transitions. [2021-11-20 06:36:58,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:36:58,743 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-20 06:36:58,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:36:58,744 INFO L225 Difference]: With dead ends: 105 [2021-11-20 06:36:58,744 INFO L226 Difference]: Without dead ends: 105 [2021-11-20 06:36:58,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=50, Invalid=102, Unknown=4, NotChecked=0, Total=156 [2021-11-20 06:36:58,745 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 71 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 06:36:58,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 0 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 149 Invalid, 0 Unknown, 75 Unchecked, 0.6s Time] [2021-11-20 06:36:58,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-11-20 06:36:58,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 96. [2021-11-20 06:36:58,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 71 states have (on average 2.2535211267605635) internal successors, (160), 95 states have internal predecessors, (160), 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 06:36:58,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 160 transitions. [2021-11-20 06:36:58,749 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 160 transitions. Word has length 11 [2021-11-20 06:36:58,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:36:58,749 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 160 transitions. [2021-11-20 06:36:58,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:36:58,749 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 160 transitions. [2021-11-20 06:36:58,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 06:36:58,750 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:36:58,750 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:36:58,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2021-11-20 06:36:58,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:36:58,962 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:36:58,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:36:58,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1495176950, now seen corresponding path program 1 times [2021-11-20 06:36:58,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:36:58,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1275566] [2021-11-20 06:36:58,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:36:58,963 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:36:58,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:36:58,964 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:36:58,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-11-20 06:36:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:36:59,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-20 06:36:59,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:36:59,142 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:36:59,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 22 [2021-11-20 06:36:59,146 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 23 treesize of output 21 [2021-11-20 06:36:59,287 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-20 06:36:59,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 26 [2021-11-20 06:36:59,476 INFO L354 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2021-11-20 06:36:59,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 46 [2021-11-20 06:36:59,884 INFO L354 Elim1Store]: treesize reduction 80, result has 36.0 percent of original size [2021-11-20 06:36:59,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 91 [2021-11-20 06:37:00,700 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 11 treesize of output 7 [2021-11-20 06:37:00,710 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 53 treesize of output 49 [2021-11-20 06:37:01,211 INFO L354 Elim1Store]: treesize reduction 88, result has 42.5 percent of original size [2021-11-20 06:37:01,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 60 treesize of output 111 [2021-11-20 06:37:01,940 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 92 treesize of output 76 [2021-11-20 06:37:01,959 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 76 treesize of output 68 [2021-11-20 06:37:02,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:37:02,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:37:02,841 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 96 treesize of output 92 [2021-11-20 06:37:02,844 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 134 treesize of output 126 [2021-11-20 06:37:10,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:37:10,967 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:37:10,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1275566] [2021-11-20 06:37:10,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1275566] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:37:10,967 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:37:10,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-11-20 06:37:10,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323287830] [2021-11-20 06:37:10,967 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:37:10,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 06:37:10,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:37:10,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 06:37:10,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=154, Unknown=1, NotChecked=0, Total=240 [2021-11-20 06:37:10,968 INFO L87 Difference]: Start difference. First operand 96 states and 160 transitions. Second operand has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:37:11,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:37:11,393 INFO L93 Difference]: Finished difference Result 108 states and 193 transitions. [2021-11-20 06:37:11,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 06:37:11,394 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-20 06:37:11,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:37:11,394 INFO L225 Difference]: With dead ends: 108 [2021-11-20 06:37:11,395 INFO L226 Difference]: Without dead ends: 108 [2021-11-20 06:37:11,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=85, Invalid=154, Unknown=1, NotChecked=0, Total=240 [2021-11-20 06:37:11,395 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 127 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:37:11,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 127 Unchecked, 0.4s Time] [2021-11-20 06:37:11,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-11-20 06:37:11,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-11-20 06:37:11,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 83 states have (on average 2.325301204819277) internal successors, (193), 107 states have internal predecessors, (193), 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 06:37:11,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 193 transitions. [2021-11-20 06:37:11,399 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 193 transitions. Word has length 11 [2021-11-20 06:37:11,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:37:11,399 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 193 transitions. [2021-11-20 06:37:11,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:37:11,400 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 193 transitions. [2021-11-20 06:37:11,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 06:37:11,400 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:37:11,400 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:37:11,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-11-20 06:37:11,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:37:11,614 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:37:11,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:37:11,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1495179585, now seen corresponding path program 3 times [2021-11-20 06:37:11,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:37:11,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201886499] [2021-11-20 06:37:11,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 06:37:11,614 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:37:11,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:37:11,615 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:37:11,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-11-20 06:37:11,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-20 06:37:11,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:37:11,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-20 06:37:11,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:37:11,791 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:37:11,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2021-11-20 06:37:11,796 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 20 treesize of output 18 [2021-11-20 06:37:11,901 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-20 06:37:11,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 26 [2021-11-20 06:37:12,045 INFO L354 Elim1Store]: treesize reduction 58, result has 29.3 percent of original size [2021-11-20 06:37:12,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 45 [2021-11-20 06:37:12,387 INFO L354 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2021-11-20 06:37:12,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 55 [2021-11-20 06:37:13,673 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:37:13,851 INFO L354 Elim1Store]: treesize reduction 80, result has 36.0 percent of original size [2021-11-20 06:37:13,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 43 treesize of output 78 [2021-11-20 06:37:15,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:37:15,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:37:21,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:37:21,749 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:37:21,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201886499] [2021-11-20 06:37:21,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201886499] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:37:21,749 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:37:21,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-11-20 06:37:21,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605500598] [2021-11-20 06:37:21,750 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:37:21,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:37:21,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:37:21,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:37:21,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=111, Unknown=1, NotChecked=0, Total=182 [2021-11-20 06:37:21,751 INFO L87 Difference]: Start difference. First operand 108 states and 193 transitions. Second operand has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:37:22,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:37:22,197 INFO L93 Difference]: Finished difference Result 109 states and 194 transitions. [2021-11-20 06:37:22,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 06:37:22,198 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-20 06:37:22,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:37:22,199 INFO L225 Difference]: With dead ends: 109 [2021-11-20 06:37:22,199 INFO L226 Difference]: Without dead ends: 109 [2021-11-20 06:37:22,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=70, Invalid=111, Unknown=1, NotChecked=0, Total=182 [2021-11-20 06:37:22,204 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:37:22,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 98 Unchecked, 0.4s Time] [2021-11-20 06:37:22,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-20 06:37:22,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-11-20 06:37:22,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 84 states have (on average 2.3095238095238093) internal successors, (194), 108 states have internal predecessors, (194), 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 06:37:22,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 194 transitions. [2021-11-20 06:37:22,215 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 194 transitions. Word has length 11 [2021-11-20 06:37:22,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:37:22,215 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 194 transitions. [2021-11-20 06:37:22,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:37:22,216 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 194 transitions. [2021-11-20 06:37:22,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 06:37:22,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:37:22,216 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:37:22,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-11-20 06:37:22,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:37:22,418 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:37:22,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:37:22,418 INFO L85 PathProgramCache]: Analyzing trace with hash 894150006, now seen corresponding path program 2 times [2021-11-20 06:37:22,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:37:22,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1430650447] [2021-11-20 06:37:22,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:37:22,419 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:37:22,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:37:22,420 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:37:22,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-11-20 06:37:22,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:37:22,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:37:22,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-20 06:37:22,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:37:22,608 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:37:22,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2021-11-20 06:37:22,613 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 20 treesize of output 18 [2021-11-20 06:37:22,735 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-20 06:37:22,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 26 [2021-11-20 06:37:22,885 INFO L354 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2021-11-20 06:37:22,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 46 [2021-11-20 06:37:23,279 INFO L354 Elim1Store]: treesize reduction 80, result has 36.0 percent of original size [2021-11-20 06:37:23,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 49 treesize of output 84 [2021-11-20 06:37:23,933 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 49 treesize of output 45 [2021-11-20 06:37:24,395 INFO L354 Elim1Store]: treesize reduction 88, result has 42.5 percent of original size [2021-11-20 06:37:24,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 107 [2021-11-20 06:37:24,915 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 66 treesize of output 54 [2021-11-20 06:37:25,747 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 06:37:25,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:37:29,471 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 06:37:29,471 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:37:29,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1430650447] [2021-11-20 06:37:29,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1430650447] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:37:29,471 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:37:29,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 13 [2021-11-20 06:37:29,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919646721] [2021-11-20 06:37:29,472 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:37:29,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 06:37:29,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:37:29,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 06:37:29,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:37:29,473 INFO L87 Difference]: Start difference. First operand 109 states and 194 transitions. Second operand has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:37:29,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:37:29,734 INFO L93 Difference]: Finished difference Result 110 states and 196 transitions. [2021-11-20 06:37:29,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 06:37:29,735 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-20 06:37:29,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:37:29,736 INFO L225 Difference]: With dead ends: 110 [2021-11-20 06:37:29,736 INFO L226 Difference]: Without dead ends: 110 [2021-11-20 06:37:29,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:37:29,736 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:37:29,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 71 Unchecked, 0.3s Time] [2021-11-20 06:37:29,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-11-20 06:37:29,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-11-20 06:37:29,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 85 states have (on average 2.3058823529411763) internal successors, (196), 109 states have internal predecessors, (196), 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 06:37:29,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 196 transitions. [2021-11-20 06:37:29,740 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 196 transitions. Word has length 12 [2021-11-20 06:37:29,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:37:29,741 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 196 transitions. [2021-11-20 06:37:29,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:37:29,741 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 196 transitions. [2021-11-20 06:37:29,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 06:37:29,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:37:29,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:37:29,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-11-20 06:37:29,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:37:29,954 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting deleteErr3REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:37:29,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:37:29,955 INFO L85 PathProgramCache]: Analyzing trace with hash 983495333, now seen corresponding path program 1 times [2021-11-20 06:37:29,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:37:29,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1777519194] [2021-11-20 06:37:29,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:37:29,955 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:37:29,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:37:29,957 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:37:29,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-11-20 06:37:30,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:37:30,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 06:37:30,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:37:30,146 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 06:37:30,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:37:30,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:37:30,221 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:37:30,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1777519194] [2021-11-20 06:37:30,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1777519194] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:37:30,222 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:37:30,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 06:37:30,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668276911] [2021-11-20 06:37:30,222 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:37:30,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:37:30,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:37:30,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:37:30,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:37:30,224 INFO L87 Difference]: Start difference. First operand 110 states and 196 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:37:30,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:37:30,423 INFO L93 Difference]: Finished difference Result 86 states and 159 transitions. [2021-11-20 06:37:30,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:37:30,423 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-20 06:37:30,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:37:30,424 INFO L225 Difference]: With dead ends: 86 [2021-11-20 06:37:30,424 INFO L226 Difference]: Without dead ends: 86 [2021-11-20 06:37:30,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 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 06:37:30,425 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 28 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:37:30,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 2 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:37:30,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-20 06:37:30,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-11-20 06:37:30,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 73 states have (on average 2.1780821917808217) internal successors, (159), 85 states have internal predecessors, (159), 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 06:37:30,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 159 transitions. [2021-11-20 06:37:30,429 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 159 transitions. Word has length 13 [2021-11-20 06:37:30,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:37:30,429 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 159 transitions. [2021-11-20 06:37:30,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:37:30,429 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 159 transitions. [2021-11-20 06:37:30,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 06:37:30,430 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:37:30,430 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:37:30,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-11-20 06:37:30,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:37:30,644 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:37:30,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:37:30,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1948849174, now seen corresponding path program 3 times [2021-11-20 06:37:30,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:37:30,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [588016737] [2021-11-20 06:37:30,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 06:37:30,645 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:37:30,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:37:30,645 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:37:30,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-11-20 06:37:30,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-20 06:37:30,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:37:30,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-20 06:37:30,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:37:30,886 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:37:30,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2021-11-20 06:37:30,898 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 20 treesize of output 18 [2021-11-20 06:37:31,079 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-20 06:37:31,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 26 [2021-11-20 06:37:31,275 INFO L354 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2021-11-20 06:37:31,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 46 [2021-11-20 06:37:31,755 INFO L354 Elim1Store]: treesize reduction 80, result has 36.0 percent of original size [2021-11-20 06:37:31,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 49 treesize of output 84 [2021-11-20 06:37:33,085 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 58 treesize of output 54 [2021-11-20 06:37:33,641 INFO L354 Elim1Store]: treesize reduction 88, result has 42.5 percent of original size [2021-11-20 06:37:33,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 107 [2021-11-20 06:37:34,117 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-11-20 06:37:34,117 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 23 treesize of output 23 [2021-11-20 06:37:34,277 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 69 treesize of output 53 [2021-11-20 06:37:39,052 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:37:39,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:37:39,617 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-20 06:37:39,617 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 45 treesize of output 44 [2021-11-20 06:37:47,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:37:47,603 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:37:47,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [588016737] [2021-11-20 06:37:47,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [588016737] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:37:47,603 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:37:47,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 16 [2021-11-20 06:37:47,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415025141] [2021-11-20 06:37:47,603 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:37:47,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 06:37:47,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:37:47,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 06:37:47,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=200, Unknown=2, NotChecked=0, Total=306 [2021-11-20 06:37:47,604 INFO L87 Difference]: Start difference. First operand 86 states and 159 transitions. Second operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 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 06:37:48,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:37:48,038 INFO L93 Difference]: Finished difference Result 94 states and 184 transitions. [2021-11-20 06:37:48,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 06:37:48,039 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 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 06:37:48,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:37:48,039 INFO L225 Difference]: With dead ends: 94 [2021-11-20 06:37:48,039 INFO L226 Difference]: Without dead ends: 94 [2021-11-20 06:37:48,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=117, Invalid=223, Unknown=2, NotChecked=0, Total=342 [2021-11-20 06:37:48,040 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:37:48,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 71 Unchecked, 0.1s Time] [2021-11-20 06:37:48,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-20 06:37:48,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-11-20 06:37:48,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 81 states have (on average 2.271604938271605) internal successors, (184), 93 states have internal predecessors, (184), 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 06:37:48,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 184 transitions. [2021-11-20 06:37:48,043 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 184 transitions. Word has length 13 [2021-11-20 06:37:48,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:37:48,043 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 184 transitions. [2021-11-20 06:37:48,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 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 06:37:48,043 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 184 transitions. [2021-11-20 06:37:48,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 06:37:48,044 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:37:48,044 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:37:48,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-11-20 06:37:48,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:37:48,244 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:37:48,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:37:48,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1948849670, now seen corresponding path program 1 times [2021-11-20 06:37:48,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:37:48,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417827139] [2021-11-20 06:37:48,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:37:48,245 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:37:48,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:37:48,246 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:37:48,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-11-20 06:37:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:37:48,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-20 06:37:48,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:37:48,436 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:37:48,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2021-11-20 06:37:48,441 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 20 treesize of output 18 [2021-11-20 06:37:48,574 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-20 06:37:48,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 26 [2021-11-20 06:37:48,746 INFO L354 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2021-11-20 06:37:48,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 46 [2021-11-20 06:37:49,176 INFO L354 Elim1Store]: treesize reduction 80, result has 36.0 percent of original size [2021-11-20 06:37:49,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 91 [2021-11-20 06:37:50,027 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 53 treesize of output 49 [2021-11-20 06:37:50,283 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 11 treesize of output 7 [2021-11-20 06:37:50,577 INFO L354 Elim1Store]: treesize reduction 88, result has 42.5 percent of original size [2021-11-20 06:37:50,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 60 treesize of output 111 [2021-11-20 06:37:51,261 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:37:51,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 74 [2021-11-20 06:37:51,270 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:37:51,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 66 [2021-11-20 06:37:57,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:37:57,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:37:57,935 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 96 treesize of output 92 [2021-11-20 06:37:57,938 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 134 treesize of output 126 [2021-11-20 06:38:05,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:38:05,045 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:38:05,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [417827139] [2021-11-20 06:38:05,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [417827139] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:38:05,045 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:38:05,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-11-20 06:38:05,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480941425] [2021-11-20 06:38:05,045 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:38:05,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 06:38:05,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:38:05,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 06:38:05,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=196, Unknown=1, NotChecked=0, Total=306 [2021-11-20 06:38:05,046 INFO L87 Difference]: Start difference. First operand 94 states and 184 transitions. Second operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 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 06:38:05,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:05,117 INFO L93 Difference]: Finished difference Result 96 states and 186 transitions. [2021-11-20 06:38:05,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 06:38:05,117 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 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 06:38:05,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:05,118 INFO L225 Difference]: With dead ends: 96 [2021-11-20 06:38:05,118 INFO L226 Difference]: Without dead ends: 96 [2021-11-20 06:38:05,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=109, Invalid=196, Unknown=1, NotChecked=0, Total=306 [2021-11-20 06:38:05,119 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:05,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 31 Unchecked, 0.1s Time] [2021-11-20 06:38:05,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-20 06:38:05,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2021-11-20 06:38:05,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 82 states have (on average 2.2560975609756095) internal successors, (185), 94 states have internal predecessors, (185), 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 06:38:05,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 185 transitions. [2021-11-20 06:38:05,121 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 185 transitions. Word has length 13 [2021-11-20 06:38:05,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:05,121 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 185 transitions. [2021-11-20 06:38:05,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 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 06:38:05,122 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 185 transitions. [2021-11-20 06:38:05,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 06:38:05,122 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:05,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:38:05,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-11-20 06:38:05,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:38:05,332 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting deleteErr12ASSERT_VIOLATIONMEMORY_FREE === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:38:05,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:05,333 INFO L85 PathProgramCache]: Analyzing trace with hash 423583416, now seen corresponding path program 1 times [2021-11-20 06:38:05,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:38:05,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1254124867] [2021-11-20 06:38:05,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:05,333 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:38:05,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:38:05,334 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:38:05,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-11-20 06:38:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:05,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:38:05,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:38:05,480 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 06:38:05,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:38:05,497 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 06:38:05,497 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:38:05,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1254124867] [2021-11-20 06:38:05,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1254124867] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:38:05,497 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:38:05,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 06:38:05,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009049672] [2021-11-20 06:38:05,498 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:38:05,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:38:05,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:38:05,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:38:05,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:38:05,498 INFO L87 Difference]: Start difference. First operand 95 states and 185 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:38:05,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:05,649 INFO L93 Difference]: Finished difference Result 97 states and 188 transitions. [2021-11-20 06:38:05,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:38:05,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-20 06:38:05,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:05,650 INFO L225 Difference]: With dead ends: 97 [2021-11-20 06:38:05,651 INFO L226 Difference]: Without dead ends: 97 [2021-11-20 06:38:05,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 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 06:38:05,651 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 8 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:05,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 2 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:38:05,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-11-20 06:38:05,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2021-11-20 06:38:05,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 82 states have (on average 2.292682926829268) internal successors, (188), 94 states have internal predecessors, (188), 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 06:38:05,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 188 transitions. [2021-11-20 06:38:05,655 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 188 transitions. Word has length 14 [2021-11-20 06:38:05,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:05,655 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 188 transitions. [2021-11-20 06:38:05,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:38:05,656 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 188 transitions. [2021-11-20 06:38:05,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 06:38:05,656 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:05,656 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:38:05,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-11-20 06:38:05,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:38:05,860 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting deleteErr10REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:38:05,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:05,861 INFO L85 PathProgramCache]: Analyzing trace with hash 423583326, now seen corresponding path program 1 times [2021-11-20 06:38:05,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:38:05,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567090493] [2021-11-20 06:38:05,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:38:05,861 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:38:05,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:38:05,862 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:38:05,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-11-20 06:38:05,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:38:05,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:38:05,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:38:05,982 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 06:38:05,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:38:06,012 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 06:38:06,012 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:38:06,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1567090493] [2021-11-20 06:38:06,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1567090493] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:38:06,012 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:38:06,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 06:38:06,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895383899] [2021-11-20 06:38:06,013 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:38:06,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:38:06,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:38:06,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:38:06,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:38:06,014 INFO L87 Difference]: Start difference. First operand 95 states and 188 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:38:06,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:38:06,138 INFO L93 Difference]: Finished difference Result 75 states and 147 transitions. [2021-11-20 06:38:06,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:38:06,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-20 06:38:06,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:38:06,139 INFO L225 Difference]: With dead ends: 75 [2021-11-20 06:38:06,140 INFO L226 Difference]: Without dead ends: 75 [2021-11-20 06:38:06,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 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 06:38:06,140 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 4 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:38:06,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:38:06,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-20 06:38:06,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-11-20 06:38:06,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 71 states have (on average 2.0704225352112675) internal successors, (147), 74 states have internal predecessors, (147), 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 06:38:06,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 147 transitions. [2021-11-20 06:38:06,144 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 147 transitions. Word has length 14 [2021-11-20 06:38:06,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:38:06,144 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 147 transitions. [2021-11-20 06:38:06,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:38:06,144 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 147 transitions. [2021-11-20 06:38:06,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 06:38:06,145 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:38:06,145 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:38:06,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-11-20 06:38:06,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:38:06,356 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:38:06,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:38:06,356 INFO L85 PathProgramCache]: Analyzing trace with hash 284784084, now seen corresponding path program 4 times [2021-11-20 06:38:06,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:38:06,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211029555] [2021-11-20 06:38:06,357 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 06:38:06,357 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:38:06,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:38:06,360 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:38:06,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-11-20 06:38:06,559 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 06:38:06,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:38:06,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-20 06:38:06,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:38:06,596 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:38:06,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2021-11-20 06:38:06,615 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:38:06,615 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 29 treesize of output 31 [2021-11-20 06:38:06,748 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-20 06:38:06,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 54 [2021-11-20 06:38:06,777 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-20 06:38:06,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 50 [2021-11-20 06:38:07,054 INFO L354 Elim1Store]: treesize reduction 58, result has 29.3 percent of original size [2021-11-20 06:38:07,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 53 [2021-11-20 06:38:08,229 INFO L354 Elim1Store]: treesize reduction 80, result has 36.0 percent of original size [2021-11-20 06:38:08,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 53 treesize of output 88 [2021-11-20 06:38:14,255 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:38:14,552 INFO L354 Elim1Store]: treesize reduction 110, result has 37.5 percent of original size [2021-11-20 06:38:14,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 70 treesize of output 124 [2021-11-20 06:38:39,669 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:38:40,096 INFO L354 Elim1Store]: treesize reduction 144, result has 38.7 percent of original size [2021-11-20 06:38:40,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 81 treesize of output 158 [2021-11-20 06:39:00,361 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:39:00,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:39:06,613 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:39:06,613 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:39:06,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211029555] [2021-11-20 06:39:06,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211029555] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 06:39:06,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:39:06,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2021-11-20 06:39:06,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179685436] [2021-11-20 06:39:06,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:39:06,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:39:06,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:39:06,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:39:06,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=78, Unknown=3, NotChecked=0, Total=132 [2021-11-20 06:39:06,614 INFO L87 Difference]: Start difference. First operand 75 states and 147 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:39:08,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:08,829 INFO L93 Difference]: Finished difference Result 81 states and 153 transitions. [2021-11-20 06:39:08,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:39:08,830 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-20 06:39:08,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:08,831 INFO L225 Difference]: With dead ends: 81 [2021-11-20 06:39:08,831 INFO L226 Difference]: Without dead ends: 81 [2021-11-20 06:39:08,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=61, Invalid=91, Unknown=4, NotChecked=0, Total=156 [2021-11-20 06:39:08,831 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:08,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 49 Unchecked, 0.1s Time] [2021-11-20 06:39:08,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-20 06:39:08,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 70. [2021-11-20 06:39:08,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 66 states have (on average 1.9090909090909092) internal successors, (126), 69 states have internal predecessors, (126), 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 06:39:08,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 126 transitions. [2021-11-20 06:39:08,833 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 126 transitions. Word has length 14 [2021-11-20 06:39:08,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:08,833 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 126 transitions. [2021-11-20 06:39:08,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:39:08,833 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 126 transitions. [2021-11-20 06:39:08,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 06:39:08,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:08,834 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-20 06:39:08,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-11-20 06:39:09,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:39:09,034 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:39:09,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:09,035 INFO L85 PathProgramCache]: Analyzing trace with hash 211086420, now seen corresponding path program 1 times [2021-11-20 06:39:09,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:39:09,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [224581278] [2021-11-20 06:39:09,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:09,035 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:39:09,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:39:09,036 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:39:09,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-11-20 06:39:09,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:09,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-20 06:39:09,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:39:09,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-20 06:39:09,243 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-20 06:39:09,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2021-11-20 06:39:09,281 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:39:09,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:39:09,304 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 30 treesize of output 26 [2021-11-20 06:39:09,354 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:39:09,354 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:39:09,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [224581278] [2021-11-20 06:39:09,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [224581278] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:39:09,354 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:39:09,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-11-20 06:39:09,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846658385] [2021-11-20 06:39:09,355 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:39:09,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:39:09,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:39:09,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:39:09,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:39:09,355 INFO L87 Difference]: Start difference. First operand 70 states and 126 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:39:09,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:09,748 INFO L93 Difference]: Finished difference Result 54 states and 82 transitions. [2021-11-20 06:39:09,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:39:09,748 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-20 06:39:09,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:09,749 INFO L225 Difference]: With dead ends: 54 [2021-11-20 06:39:09,749 INFO L226 Difference]: Without dead ends: 52 [2021-11-20 06:39:09,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:39:09,749 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:09,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:39:09,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-20 06:39:09,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2021-11-20 06:39:09,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.673913043478261) internal successors, (77), 50 states have internal predecessors, (77), 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 06:39:09,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 77 transitions. [2021-11-20 06:39:09,752 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 77 transitions. Word has length 14 [2021-11-20 06:39:09,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:09,752 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 77 transitions. [2021-11-20 06:39:09,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:39:09,752 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 77 transitions. [2021-11-20 06:39:09,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 06:39:09,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:09,753 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:39:09,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-11-20 06:39:09,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:39:09,965 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:39:09,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:09,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1076919054, now seen corresponding path program 1 times [2021-11-20 06:39:09,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:39:09,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061344831] [2021-11-20 06:39:09,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:09,966 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:39:09,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:39:09,966 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:39:09,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-11-20 06:39:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:10,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-20 06:39:10,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:39:10,162 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:39:10,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-11-20 06:39:10,226 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:39:10,226 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 16 treesize of output 21 [2021-11-20 06:39:10,328 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-20 06:39:10,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 45 [2021-11-20 06:39:10,513 INFO L354 Elim1Store]: treesize reduction 57, result has 30.5 percent of original size [2021-11-20 06:39:10,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 82 [2021-11-20 06:39:10,755 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 28 treesize of output 24 [2021-11-20 06:39:10,935 INFO L354 Elim1Store]: treesize reduction 116, result has 24.2 percent of original size [2021-11-20 06:39:10,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 101 treesize of output 124 [2021-11-20 06:39:11,211 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 46 treesize of output 38 [2021-11-20 06:39:11,680 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:39:11,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:39:11,886 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 79 treesize of output 75 [2021-11-20 06:39:13,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:39:13,421 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:39:13,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1061344831] [2021-11-20 06:39:13,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1061344831] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:39:13,422 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:39:13,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-11-20 06:39:13,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997879206] [2021-11-20 06:39:13,422 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:39:13,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 06:39:13,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:39:13,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 06:39:13,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:39:13,423 INFO L87 Difference]: Start difference. First operand 51 states and 77 transitions. Second operand has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:39:14,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:14,118 INFO L93 Difference]: Finished difference Result 86 states and 121 transitions. [2021-11-20 06:39:14,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 06:39:14,119 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 06:39:14,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:14,120 INFO L225 Difference]: With dead ends: 86 [2021-11-20 06:39:14,120 INFO L226 Difference]: Without dead ends: 86 [2021-11-20 06:39:14,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=148, Invalid=232, Unknown=0, NotChecked=0, Total=380 [2021-11-20 06:39:14,121 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:14,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 68 Unchecked, 0.1s Time] [2021-11-20 06:39:14,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-20 06:39:14,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 68. [2021-11-20 06:39:14,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 63 states have (on average 1.5714285714285714) internal successors, (99), 67 states have internal predecessors, (99), 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 06:39:14,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 99 transitions. [2021-11-20 06:39:14,124 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 99 transitions. Word has length 15 [2021-11-20 06:39:14,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:14,124 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 99 transitions. [2021-11-20 06:39:14,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:39:14,125 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 99 transitions. [2021-11-20 06:39:14,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 06:39:14,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:14,125 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:39:14,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-11-20 06:39:14,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:39:14,338 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:39:14,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:14,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1076919052, now seen corresponding path program 1 times [2021-11-20 06:39:14,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:39:14,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464554098] [2021-11-20 06:39:14,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:14,339 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:39:14,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:39:14,340 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:39:14,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-11-20 06:39:14,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:14,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-20 06:39:14,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:39:14,544 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:39:14,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 23 [2021-11-20 06:39:14,564 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:39:14,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-11-20 06:39:14,675 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:39:14,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-20 06:39:14,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-20 06:39:14,735 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 06:39:14,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:39:14,789 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-20 06:39:14,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-20 06:39:15,053 INFO L354 Elim1Store]: treesize reduction 54, result has 27.0 percent of original size [2021-11-20 06:39:15,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 50 treesize of output 62 [2021-11-20 06:39:15,074 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:39:15,074 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 56 treesize of output 56 [2021-11-20 06:39:16,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2021-11-20 06:39:16,614 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-11-20 06:39:16,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2021-11-20 06:39:16,744 INFO L354 Elim1Store]: treesize reduction 78, result has 29.1 percent of original size [2021-11-20 06:39:16,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 63 treesize of output 90 [2021-11-20 06:39:17,779 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 81 treesize of output 61 [2021-11-20 06:39:20,134 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:39:20,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:39:22,530 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-20 06:39:22,530 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 34 treesize of output 33 [2021-11-20 06:39:24,438 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 45 treesize of output 43 [2021-11-20 06:39:36,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:39:36,205 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:39:36,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1464554098] [2021-11-20 06:39:36,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1464554098] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:39:36,206 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:39:36,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 14 [2021-11-20 06:39:36,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842548890] [2021-11-20 06:39:36,206 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:39:36,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 06:39:36,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:39:36,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 06:39:36,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=152, Unknown=5, NotChecked=0, Total=240 [2021-11-20 06:39:36,207 INFO L87 Difference]: Start difference. First operand 68 states and 99 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:39:36,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:36,341 INFO L93 Difference]: Finished difference Result 100 states and 138 transitions. [2021-11-20 06:39:36,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 06:39:36,342 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 06:39:36,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:36,343 INFO L225 Difference]: With dead ends: 100 [2021-11-20 06:39:36,343 INFO L226 Difference]: Without dead ends: 100 [2021-11-20 06:39:36,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=83, Invalid=152, Unknown=5, NotChecked=0, Total=240 [2021-11-20 06:39:36,343 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:36,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 32 Unchecked, 0.1s Time] [2021-11-20 06:39:36,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-11-20 06:39:36,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 84. [2021-11-20 06:39:36,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 79 states have (on average 1.5063291139240507) internal successors, (119), 83 states have internal predecessors, (119), 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 06:39:36,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 119 transitions. [2021-11-20 06:39:36,347 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 119 transitions. Word has length 15 [2021-11-20 06:39:36,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:36,347 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 119 transitions. [2021-11-20 06:39:36,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:39:36,348 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 119 transitions. [2021-11-20 06:39:36,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 06:39:36,348 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:36,348 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:39:36,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-11-20 06:39:36,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:39:36,560 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:39:36,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:36,561 INFO L85 PathProgramCache]: Analyzing trace with hash -302057636, now seen corresponding path program 2 times [2021-11-20 06:39:36,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:39:36,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [797746382] [2021-11-20 06:39:36,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:39:36,561 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:39:36,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:39:36,562 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:39:36,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-11-20 06:39:36,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:39:36,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:39:36,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-20 06:39:36,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:39:36,785 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:39:36,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 23 [2021-11-20 06:39:36,805 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:39:36,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-11-20 06:39:36,901 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:39:36,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-20 06:39:36,924 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:39:36,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-20 06:39:37,046 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-20 06:39:37,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 30 [2021-11-20 06:39:37,315 INFO L354 Elim1Store]: treesize reduction 46, result has 37.8 percent of original size [2021-11-20 06:39:37,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 56 [2021-11-20 06:39:38,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 54 [2021-11-20 06:39:38,400 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-11-20 06:39:38,401 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 21 treesize of output 21 [2021-11-20 06:39:38,541 INFO L354 Elim1Store]: treesize reduction 78, result has 29.1 percent of original size [2021-11-20 06:39:38,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 56 treesize of output 83 [2021-11-20 06:39:39,147 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 73 treesize of output 57 [2021-11-20 06:39:40,762 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:39:40,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:39:45,394 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-20 06:39:45,394 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 35 treesize of output 34 [2021-11-20 06:40:00,171 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:40:00,171 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:40:00,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [797746382] [2021-11-20 06:40:00,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [797746382] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:40:00,171 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:40:00,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 14 [2021-11-20 06:40:00,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612529377] [2021-11-20 06:40:00,172 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:40:00,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 06:40:00,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:40:00,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 06:40:00,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=151, Unknown=8, NotChecked=0, Total=240 [2021-11-20 06:40:00,173 INFO L87 Difference]: Start difference. First operand 84 states and 119 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:40:00,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:40:00,297 INFO L93 Difference]: Finished difference Result 111 states and 152 transitions. [2021-11-20 06:40:00,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 06:40:00,298 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 06:40:00,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:40:00,298 INFO L225 Difference]: With dead ends: 111 [2021-11-20 06:40:00,299 INFO L226 Difference]: Without dead ends: 111 [2021-11-20 06:40:00,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=81, Invalid=151, Unknown=8, NotChecked=0, Total=240 [2021-11-20 06:40:00,299 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:40:00,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 74 Unchecked, 0.1s Time] [2021-11-20 06:40:00,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-11-20 06:40:00,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 80. [2021-11-20 06:40:00,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.52) internal successors, (114), 79 states have internal predecessors, (114), 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 06:40:00,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 114 transitions. [2021-11-20 06:40:00,301 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 114 transitions. Word has length 15 [2021-11-20 06:40:00,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:40:00,302 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 114 transitions. [2021-11-20 06:40:00,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:40:00,302 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 114 transitions. [2021-11-20 06:40:00,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 06:40:00,303 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:40:00,303 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:40:00,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-11-20 06:40:00,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:40:00,515 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:40:00,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:40:00,516 INFO L85 PathProgramCache]: Analyzing trace with hash -2054152552, now seen corresponding path program 2 times [2021-11-20 06:40:00,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:40:00,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1264217461] [2021-11-20 06:40:00,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:40:00,516 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:40:00,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:40:00,517 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:40:00,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-11-20 06:40:00,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:40:00,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:40:00,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-20 06:40:00,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:40:00,717 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:40:00,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-11-20 06:40:00,782 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:40:00,782 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 16 treesize of output 21 [2021-11-20 06:40:00,869 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-20 06:40:00,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 42 [2021-11-20 06:40:01,052 INFO L354 Elim1Store]: treesize reduction 57, result has 30.5 percent of original size [2021-11-20 06:40:01,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 72 [2021-11-20 06:40:01,411 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 27 treesize of output 23 [2021-11-20 06:40:01,601 INFO L354 Elim1Store]: treesize reduction 116, result has 24.2 percent of original size [2021-11-20 06:40:01,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 97 treesize of output 120 [2021-11-20 06:40:01,816 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 43 treesize of output 35 [2021-11-20 06:40:02,426 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:40:02,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:40:02,650 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 73 treesize of output 69 [2021-11-20 06:40:04,077 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:40:04,077 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:40:04,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1264217461] [2021-11-20 06:40:04,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1264217461] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:40:04,077 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:40:04,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-11-20 06:40:04,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823178991] [2021-11-20 06:40:04,078 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:40:04,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 06:40:04,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:40:04,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 06:40:04,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:40:04,078 INFO L87 Difference]: Start difference. First operand 80 states and 114 transitions. Second operand has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:40:04,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:40:04,509 INFO L93 Difference]: Finished difference Result 118 states and 162 transitions. [2021-11-20 06:40:04,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 06:40:04,510 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 06:40:04,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:40:04,510 INFO L225 Difference]: With dead ends: 118 [2021-11-20 06:40:04,510 INFO L226 Difference]: Without dead ends: 118 [2021-11-20 06:40:04,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=148, Invalid=232, Unknown=0, NotChecked=0, Total=380 [2021-11-20 06:40:04,511 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:40:04,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 93 Unchecked, 0.1s Time] [2021-11-20 06:40:04,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-11-20 06:40:04,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 88. [2021-11-20 06:40:04,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 1.5060240963855422) internal successors, (125), 87 states have internal predecessors, (125), 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 06:40:04,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 125 transitions. [2021-11-20 06:40:04,515 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 125 transitions. Word has length 15 [2021-11-20 06:40:04,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:40:04,515 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 125 transitions. [2021-11-20 06:40:04,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:40:04,515 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 125 transitions. [2021-11-20 06:40:04,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 06:40:04,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:40:04,516 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:40:04,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-11-20 06:40:04,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:40:04,729 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:40:04,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:40:04,729 INFO L85 PathProgramCache]: Analyzing trace with hash -2054152550, now seen corresponding path program 3 times [2021-11-20 06:40:04,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:40:04,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144220299] [2021-11-20 06:40:04,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 06:40:04,729 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:40:04,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:40:04,730 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:40:04,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-11-20 06:40:04,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-20 06:40:04,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:40:04,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-20 06:40:04,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:40:04,940 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:40:04,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2021-11-20 06:40:04,969 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:40:04,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 24 [2021-11-20 06:40:05,095 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:40:05,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-20 06:40:05,122 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:40:05,122 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 15 treesize of output 15 [2021-11-20 06:40:05,237 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-20 06:40:05,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 30 [2021-11-20 06:40:05,506 INFO L354 Elim1Store]: treesize reduction 46, result has 37.8 percent of original size [2021-11-20 06:40:05,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 56 [2021-11-20 06:40:06,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 54 [2021-11-20 06:40:06,883 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-11-20 06:40:06,883 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 21 treesize of output 21 [2021-11-20 06:40:07,014 INFO L354 Elim1Store]: treesize reduction 78, result has 29.1 percent of original size [2021-11-20 06:40:07,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 56 treesize of output 83 [2021-11-20 06:40:07,698 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 73 treesize of output 57 [2021-11-20 06:40:09,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:40:09,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:40:14,205 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-20 06:40:14,205 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 34 treesize of output 33 [2021-11-20 06:40:27,026 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:40:27,026 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:40:27,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144220299] [2021-11-20 06:40:27,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144220299] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:40:27,027 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:40:27,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 14 [2021-11-20 06:40:27,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461446818] [2021-11-20 06:40:27,027 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:40:27,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 06:40:27,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:40:27,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 06:40:27,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=153, Unknown=6, NotChecked=0, Total=240 [2021-11-20 06:40:27,028 INFO L87 Difference]: Start difference. First operand 88 states and 125 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:40:33,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:40:33,356 INFO L93 Difference]: Finished difference Result 114 states and 157 transitions. [2021-11-20 06:40:33,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 06:40:33,356 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 06:40:33,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:40:33,357 INFO L225 Difference]: With dead ends: 114 [2021-11-20 06:40:33,357 INFO L226 Difference]: Without dead ends: 114 [2021-11-20 06:40:33,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=93, Invalid=172, Unknown=7, NotChecked=0, Total=272 [2021-11-20 06:40:33,357 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 105 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:40:33,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 105 Unchecked, 0.1s Time] [2021-11-20 06:40:33,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-11-20 06:40:33,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 89. [2021-11-20 06:40:33,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 84 states have (on average 1.5119047619047619) internal successors, (127), 88 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:40:33,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 127 transitions. [2021-11-20 06:40:33,361 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 127 transitions. Word has length 15 [2021-11-20 06:40:33,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:40:33,361 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 127 transitions. [2021-11-20 06:40:33,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:40:33,361 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 127 transitions. [2021-11-20 06:40:33,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 06:40:33,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:40:33,362 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:40:33,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (56)] Ended with exit code 0 [2021-11-20 06:40:33,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:40:33,593 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:40:33,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:40:33,593 INFO L85 PathProgramCache]: Analyzing trace with hash -936375376, now seen corresponding path program 3 times [2021-11-20 06:40:33,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:40:33,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3026298] [2021-11-20 06:40:33,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 06:40:33,593 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:40:33,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:40:33,594 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:40:33,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-11-20 06:40:33,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-20 06:40:33,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:40:33,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-20 06:40:33,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:40:33,788 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:40:33,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-11-20 06:40:33,852 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:40:33,853 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 16 treesize of output 21 [2021-11-20 06:40:33,947 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-20 06:40:33,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 42 [2021-11-20 06:40:34,121 INFO L354 Elim1Store]: treesize reduction 57, result has 30.5 percent of original size [2021-11-20 06:40:34,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 70 [2021-11-20 06:40:34,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-11-20 06:40:34,676 INFO L354 Elim1Store]: treesize reduction 116, result has 24.2 percent of original size [2021-11-20 06:40:34,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 112 [2021-11-20 06:40:34,964 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 46 treesize of output 38 [2021-11-20 06:40:35,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:40:35,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:40:36,138 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 87 treesize of output 83 [2021-11-20 06:40:37,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:40:37,532 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:40:37,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3026298] [2021-11-20 06:40:37,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [3026298] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:40:37,532 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:40:37,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-11-20 06:40:37,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334134149] [2021-11-20 06:40:37,533 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:40:37,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 06:40:37,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:40:37,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 06:40:37,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:40:37,535 INFO L87 Difference]: Start difference. First operand 89 states and 127 transitions. Second operand has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:40:37,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:40:37,779 INFO L93 Difference]: Finished difference Result 127 states and 174 transitions. [2021-11-20 06:40:37,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 06:40:37,780 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 06:40:37,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:40:37,780 INFO L225 Difference]: With dead ends: 127 [2021-11-20 06:40:37,780 INFO L226 Difference]: Without dead ends: 127 [2021-11-20 06:40:37,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=130, Invalid=212, Unknown=0, NotChecked=0, Total=342 [2021-11-20 06:40:37,781 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:40:37,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 93 Unchecked, 0.1s Time] [2021-11-20 06:40:37,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-20 06:40:37,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 93. [2021-11-20 06:40:37,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 88 states have (on average 1.5) internal successors, (132), 92 states have internal predecessors, (132), 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 06:40:37,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 132 transitions. [2021-11-20 06:40:37,783 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 132 transitions. Word has length 15 [2021-11-20 06:40:37,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:40:37,784 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 132 transitions. [2021-11-20 06:40:37,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:40:37,784 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 132 transitions. [2021-11-20 06:40:37,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 06:40:37,785 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:40:37,785 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:40:37,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (57)] Ended with exit code 0 [2021-11-20 06:40:37,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:40:37,997 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:40:37,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:40:37,998 INFO L85 PathProgramCache]: Analyzing trace with hash -936375374, now seen corresponding path program 4 times [2021-11-20 06:40:37,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:40:37,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852742475] [2021-11-20 06:40:37,998 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 06:40:37,998 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:40:37,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:40:37,999 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:40:38,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-11-20 06:40:38,161 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 06:40:38,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:40:38,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-20 06:40:38,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:40:38,199 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:40:38,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 23 [2021-11-20 06:40:38,220 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:40:38,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-11-20 06:40:38,319 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:40:38,319 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 15 treesize of output 15 [2021-11-20 06:40:38,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-20 06:40:38,431 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-20 06:40:38,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 30 [2021-11-20 06:40:38,483 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 06:40:38,727 INFO L354 Elim1Store]: treesize reduction 54, result has 27.0 percent of original size [2021-11-20 06:40:38,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 52 treesize of output 64 [2021-11-20 06:40:38,749 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:40:38,749 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 58 treesize of output 58 [2021-11-20 06:40:39,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 58 [2021-11-20 06:40:40,616 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-11-20 06:40:40,616 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 21 treesize of output 21 [2021-11-20 06:40:40,763 INFO L354 Elim1Store]: treesize reduction 78, result has 29.1 percent of original size [2021-11-20 06:40:40,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 64 treesize of output 91 [2021-11-20 06:40:41,786 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 81 treesize of output 61 [2021-11-20 06:40:45,680 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:40:45,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:40:48,455 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-20 06:40:48,455 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 34 treesize of output 33 [2021-11-20 06:40:52,296 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 41 treesize of output 39 [2021-11-20 06:40:59,598 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:40:59,598 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:40:59,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852742475] [2021-11-20 06:40:59,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852742475] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:40:59,599 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:40:59,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 14 [2021-11-20 06:40:59,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960374442] [2021-11-20 06:40:59,599 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:40:59,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 06:40:59,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:40:59,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 06:40:59,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=152, Unknown=4, NotChecked=0, Total=240 [2021-11-20 06:40:59,600 INFO L87 Difference]: Start difference. First operand 93 states and 132 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:41:06,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:41:06,334 INFO L93 Difference]: Finished difference Result 127 states and 171 transitions. [2021-11-20 06:41:06,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 06:41:06,335 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 06:41:06,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:41:06,335 INFO L225 Difference]: With dead ends: 127 [2021-11-20 06:41:06,335 INFO L226 Difference]: Without dead ends: 127 [2021-11-20 06:41:06,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 20.1s TimeCoverageRelationStatistics Valid=130, Invalid=245, Unknown=5, NotChecked=0, Total=380 [2021-11-20 06:41:06,336 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 166 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:41:06,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 69 Invalid, 0 Unknown, 166 Unchecked, 0.3s Time] [2021-11-20 06:41:06,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-20 06:41:06,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 87. [2021-11-20 06:41:06,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 82 states have (on average 1.5121951219512195) internal successors, (124), 86 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:41:06,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 124 transitions. [2021-11-20 06:41:06,339 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 124 transitions. Word has length 15 [2021-11-20 06:41:06,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:41:06,339 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 124 transitions. [2021-11-20 06:41:06,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:41:06,340 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 124 transitions. [2021-11-20 06:41:06,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 06:41:06,340 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:41:06,340 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:41:06,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2021-11-20 06:41:06,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:41:06,553 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:41:06,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:41:06,553 INFO L85 PathProgramCache]: Analyzing trace with hash 388143050, now seen corresponding path program 4 times [2021-11-20 06:41:06,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:41:06,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [607162690] [2021-11-20 06:41:06,554 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 06:41:06,554 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:41:06,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:41:06,554 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:41:06,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-11-20 06:41:06,700 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 06:41:06,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:41:06,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-20 06:41:06,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:41:06,734 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:41:06,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-11-20 06:41:06,797 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:41:06,797 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 16 treesize of output 21 [2021-11-20 06:41:06,881 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-20 06:41:06,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 47 [2021-11-20 06:41:07,121 INFO L354 Elim1Store]: treesize reduction 57, result has 30.5 percent of original size [2021-11-20 06:41:07,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 75 [2021-11-20 06:41:07,382 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 27 treesize of output 23 [2021-11-20 06:41:07,577 INFO L354 Elim1Store]: treesize reduction 116, result has 24.2 percent of original size [2021-11-20 06:41:07,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 112 [2021-11-20 06:41:07,867 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 43 treesize of output 35 [2021-11-20 06:41:08,483 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:41:08,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:41:08,719 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 80 treesize of output 76 [2021-11-20 06:41:10,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:41:10,141 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:41:10,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [607162690] [2021-11-20 06:41:10,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [607162690] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:41:10,141 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:41:10,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-11-20 06:41:10,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091969639] [2021-11-20 06:41:10,141 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:41:10,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 06:41:10,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:41:10,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 06:41:10,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:41:10,142 INFO L87 Difference]: Start difference. First operand 87 states and 124 transitions. Second operand has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:41:10,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:41:10,340 INFO L93 Difference]: Finished difference Result 114 states and 155 transitions. [2021-11-20 06:41:10,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:41:10,341 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 06:41:10,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:41:10,342 INFO L225 Difference]: With dead ends: 114 [2021-11-20 06:41:10,342 INFO L226 Difference]: Without dead ends: 114 [2021-11-20 06:41:10,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2021-11-20 06:41:10,343 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 14 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:41:10,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 0 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 76 Unchecked, 0.1s Time] [2021-11-20 06:41:10,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-11-20 06:41:10,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 85. [2021-11-20 06:41:10,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 80 states have (on average 1.5125) internal successors, (121), 84 states have internal predecessors, (121), 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 06:41:10,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 121 transitions. [2021-11-20 06:41:10,348 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 121 transitions. Word has length 15 [2021-11-20 06:41:10,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:41:10,348 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 121 transitions. [2021-11-20 06:41:10,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:41:10,349 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 121 transitions. [2021-11-20 06:41:10,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 06:41:10,349 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:41:10,349 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-20 06:41:10,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-11-20 06:41:10,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:41:10,550 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:41:10,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:41:10,550 INFO L85 PathProgramCache]: Analyzing trace with hash 238372296, now seen corresponding path program 5 times [2021-11-20 06:41:10,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:41:10,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1704851210] [2021-11-20 06:41:10,551 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-20 06:41:10,551 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:41:10,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:41:10,552 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:41:10,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-11-20 06:41:10,771 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-11-20 06:41:10,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:41:10,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-20 06:41:10,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:41:10,830 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:41:10,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2021-11-20 06:41:10,836 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 20 treesize of output 18 [2021-11-20 06:41:10,961 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-20 06:41:10,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 26 [2021-11-20 06:41:11,122 INFO L354 Elim1Store]: treesize reduction 58, result has 29.3 percent of original size [2021-11-20 06:41:11,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 45 [2021-11-20 06:41:11,436 INFO L354 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2021-11-20 06:41:11,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 52 [2021-11-20 06:41:11,953 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:41:12,067 INFO L354 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2021-11-20 06:41:12,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 55 [2021-11-20 06:41:13,697 WARN L322 ript$VariableManager]: TermVariabe |buildThread1of1ForFork1_append_~elem~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:41:13,885 INFO L354 Elim1Store]: treesize reduction 80, result has 36.0 percent of original size [2021-11-20 06:41:13,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 43 treesize of output 78 [2021-11-20 06:41:14,477 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:41:14,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:41:18,154 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:41:18,155 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:41:18,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1704851210] [2021-11-20 06:41:18,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1704851210] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:41:18,155 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:41:18,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2021-11-20 06:41:18,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998973600] [2021-11-20 06:41:18,155 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:41:18,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 06:41:18,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:41:18,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 06:41:18,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:41:18,156 INFO L87 Difference]: Start difference. First operand 85 states and 121 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:41:18,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:41:18,409 INFO L93 Difference]: Finished difference Result 85 states and 120 transitions. [2021-11-20 06:41:18,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:41:18,409 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 06:41:18,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:41:18,410 INFO L225 Difference]: With dead ends: 85 [2021-11-20 06:41:18,410 INFO L226 Difference]: Without dead ends: 83 [2021-11-20 06:41:18,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:41:18,410 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:41:18,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 38 Unchecked, 0.1s Time] [2021-11-20 06:41:18,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-20 06:41:18,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-11-20 06:41:18,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 79 states have (on average 1.4936708860759493) internal successors, (118), 82 states have internal predecessors, (118), 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 06:41:18,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 118 transitions. [2021-11-20 06:41:18,412 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 118 transitions. Word has length 15 [2021-11-20 06:41:18,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:41:18,413 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 118 transitions. [2021-11-20 06:41:18,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:41:18,413 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 118 transitions. [2021-11-20 06:41:18,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 06:41:18,414 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:41:18,414 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:41:18,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2021-11-20 06:41:18,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:41:18,623 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:41:18,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:41:18,623 INFO L85 PathProgramCache]: Analyzing trace with hash 238803650, now seen corresponding path program 5 times [2021-11-20 06:41:18,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:41:18,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680787673] [2021-11-20 06:41:18,624 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-20 06:41:18,624 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:41:18,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:41:18,624 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:41:18,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-11-20 06:41:18,772 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:41:18,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:41:18,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-20 06:41:18,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:41:18,803 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:41:18,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-11-20 06:41:18,866 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:41:18,866 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 16 treesize of output 21 [2021-11-20 06:41:18,962 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-20 06:41:18,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 49 [2021-11-20 06:41:19,199 INFO L354 Elim1Store]: treesize reduction 57, result has 30.5 percent of original size [2021-11-20 06:41:19,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 77 [2021-11-20 06:41:19,469 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 30 treesize of output 26 [2021-11-20 06:41:19,665 INFO L354 Elim1Store]: treesize reduction 116, result has 24.2 percent of original size [2021-11-20 06:41:19,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 92 treesize of output 115 [2021-11-20 06:41:19,870 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 49 treesize of output 41 [2021-11-20 06:41:20,657 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:41:20,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:41:20,884 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 77 treesize of output 73 [2021-11-20 06:41:22,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:41:22,276 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:41:22,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680787673] [2021-11-20 06:41:22,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [680787673] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:41:22,276 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:41:22,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-11-20 06:41:22,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310346453] [2021-11-20 06:41:22,277 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:41:22,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 06:41:22,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:41:22,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 06:41:22,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:41:22,277 INFO L87 Difference]: Start difference. First operand 83 states and 118 transitions. Second operand has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:41:22,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:41:22,663 INFO L93 Difference]: Finished difference Result 110 states and 150 transitions. [2021-11-20 06:41:22,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 06:41:22,664 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 06:41:22,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:41:22,664 INFO L225 Difference]: With dead ends: 110 [2021-11-20 06:41:22,665 INFO L226 Difference]: Without dead ends: 110 [2021-11-20 06:41:22,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=144, Invalid=236, Unknown=0, NotChecked=0, Total=380 [2021-11-20 06:41:22,665 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:41:22,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 62 Unchecked, 0.1s Time] [2021-11-20 06:41:22,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-11-20 06:41:22,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 82. [2021-11-20 06:41:22,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 78 states have (on average 1.5) internal successors, (117), 81 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:41:22,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 117 transitions. [2021-11-20 06:41:22,668 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 117 transitions. Word has length 15 [2021-11-20 06:41:22,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:41:22,668 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 117 transitions. [2021-11-20 06:41:22,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:41:22,668 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 117 transitions. [2021-11-20 06:41:22,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 06:41:22,669 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:41:22,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:41:22,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2021-11-20 06:41:22,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:41:22,882 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [buildErr0REQUIRES_VIOLATION, buildErr1REQUIRES_VIOLATION, buildErr2REQUIRES_VIOLATION, buildErr3REQUIRES_VIOLATION, buildErr4REQUIRES_VIOLATION (and 64 more)] === [2021-11-20 06:41:22,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:41:22,882 INFO L85 PathProgramCache]: Analyzing trace with hash 328386765, now seen corresponding path program 1 times [2021-11-20 06:41:22,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:41:22,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145493147] [2021-11-20 06:41:22,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:41:22,883 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:41:22,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:41:22,884 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:41:22,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-11-20 06:41:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:41:23,045 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:41:23,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:41:23,225 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-20 06:41:23,225 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 06:41:23,226 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (68 of 69 remaining) [2021-11-20 06:41:23,228 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr0REQUIRES_VIOLATION (67 of 69 remaining) [2021-11-20 06:41:23,228 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr1REQUIRES_VIOLATION (66 of 69 remaining) [2021-11-20 06:41:23,229 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr2REQUIRES_VIOLATION (65 of 69 remaining) [2021-11-20 06:41:23,229 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr3REQUIRES_VIOLATION (64 of 69 remaining) [2021-11-20 06:41:23,229 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr4REQUIRES_VIOLATION (63 of 69 remaining) [2021-11-20 06:41:23,229 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr5REQUIRES_VIOLATION (62 of 69 remaining) [2021-11-20 06:41:23,229 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr6REQUIRES_VIOLATION (61 of 69 remaining) [2021-11-20 06:41:23,230 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr7REQUIRES_VIOLATION (60 of 69 remaining) [2021-11-20 06:41:23,230 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr8REQUIRES_VIOLATION (59 of 69 remaining) [2021-11-20 06:41:23,230 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr9REQUIRES_VIOLATION (58 of 69 remaining) [2021-11-20 06:41:23,230 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr10REQUIRES_VIOLATION (57 of 69 remaining) [2021-11-20 06:41:23,230 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr11REQUIRES_VIOLATION (56 of 69 remaining) [2021-11-20 06:41:23,230 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr12REQUIRES_VIOLATION (55 of 69 remaining) [2021-11-20 06:41:23,231 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr13REQUIRES_VIOLATION (54 of 69 remaining) [2021-11-20 06:41:23,231 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (53 of 69 remaining) [2021-11-20 06:41:23,231 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (52 of 69 remaining) [2021-11-20 06:41:23,231 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (51 of 69 remaining) [2021-11-20 06:41:23,231 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (50 of 69 remaining) [2021-11-20 06:41:23,231 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (49 of 69 remaining) [2021-11-20 06:41:23,232 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (48 of 69 remaining) [2021-11-20 06:41:23,232 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (47 of 69 remaining) [2021-11-20 06:41:23,232 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (46 of 69 remaining) [2021-11-20 06:41:23,232 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (45 of 69 remaining) [2021-11-20 06:41:23,232 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (44 of 69 remaining) [2021-11-20 06:41:23,233 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr0REQUIRES_VIOLATION (43 of 69 remaining) [2021-11-20 06:41:23,233 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr1REQUIRES_VIOLATION (42 of 69 remaining) [2021-11-20 06:41:23,233 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr10REQUIRES_VIOLATION (41 of 69 remaining) [2021-11-20 06:41:23,233 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr11REQUIRES_VIOLATION (40 of 69 remaining) [2021-11-20 06:41:23,233 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr2REQUIRES_VIOLATION (39 of 69 remaining) [2021-11-20 06:41:23,233 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr3REQUIRES_VIOLATION (38 of 69 remaining) [2021-11-20 06:41:23,234 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr4ASSERT_VIOLATIONMEMORY_FREE (37 of 69 remaining) [2021-11-20 06:41:23,234 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr12ASSERT_VIOLATIONMEMORY_FREE (36 of 69 remaining) [2021-11-20 06:41:23,234 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr5ASSERT_VIOLATIONMEMORY_FREE (35 of 69 remaining) [2021-11-20 06:41:23,234 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr13ASSERT_VIOLATIONMEMORY_FREE (34 of 69 remaining) [2021-11-20 06:41:23,234 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr6ASSERT_VIOLATIONMEMORY_FREE (33 of 69 remaining) [2021-11-20 06:41:23,235 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr14ASSERT_VIOLATIONMEMORY_FREE (32 of 69 remaining) [2021-11-20 06:41:23,235 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr7ASSERT_VIOLATIONMEMORY_FREE (31 of 69 remaining) [2021-11-20 06:41:23,235 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr8ASSERT_VIOLATIONMEMORY_FREE (30 of 69 remaining) [2021-11-20 06:41:23,235 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr9ASSERT_VIOLATIONMEMORY_FREE (29 of 69 remaining) [2021-11-20 06:41:23,235 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr0REQUIRES_VIOLATION (28 of 69 remaining) [2021-11-20 06:41:23,236 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr1REQUIRES_VIOLATION (27 of 69 remaining) [2021-11-20 06:41:23,236 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr2REQUIRES_VIOLATION (26 of 69 remaining) [2021-11-20 06:41:23,236 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr3REQUIRES_VIOLATION (25 of 69 remaining) [2021-11-20 06:41:23,236 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr4REQUIRES_VIOLATION (24 of 69 remaining) [2021-11-20 06:41:23,236 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr5REQUIRES_VIOLATION (23 of 69 remaining) [2021-11-20 06:41:23,236 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr6REQUIRES_VIOLATION (22 of 69 remaining) [2021-11-20 06:41:23,237 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr7REQUIRES_VIOLATION (21 of 69 remaining) [2021-11-20 06:41:23,237 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr8REQUIRES_VIOLATION (20 of 69 remaining) [2021-11-20 06:41:23,237 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr9REQUIRES_VIOLATION (19 of 69 remaining) [2021-11-20 06:41:23,237 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr10REQUIRES_VIOLATION (18 of 69 remaining) [2021-11-20 06:41:23,237 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr11REQUIRES_VIOLATION (17 of 69 remaining) [2021-11-20 06:41:23,237 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr12REQUIRES_VIOLATION (16 of 69 remaining) [2021-11-20 06:41:23,238 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr13REQUIRES_VIOLATION (15 of 69 remaining) [2021-11-20 06:41:23,238 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr0REQUIRES_VIOLATION (14 of 69 remaining) [2021-11-20 06:41:23,238 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr1REQUIRES_VIOLATION (13 of 69 remaining) [2021-11-20 06:41:23,238 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr10REQUIRES_VIOLATION (12 of 69 remaining) [2021-11-20 06:41:23,238 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr11REQUIRES_VIOLATION (11 of 69 remaining) [2021-11-20 06:41:23,238 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr2REQUIRES_VIOLATION (10 of 69 remaining) [2021-11-20 06:41:23,239 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr3REQUIRES_VIOLATION (9 of 69 remaining) [2021-11-20 06:41:23,239 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr4ASSERT_VIOLATIONMEMORY_FREE (8 of 69 remaining) [2021-11-20 06:41:23,239 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr12ASSERT_VIOLATIONMEMORY_FREE (7 of 69 remaining) [2021-11-20 06:41:23,239 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr5ASSERT_VIOLATIONMEMORY_FREE (6 of 69 remaining) [2021-11-20 06:41:23,239 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr13ASSERT_VIOLATIONMEMORY_FREE (5 of 69 remaining) [2021-11-20 06:41:23,240 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr6ASSERT_VIOLATIONMEMORY_FREE (4 of 69 remaining) [2021-11-20 06:41:23,240 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr14ASSERT_VIOLATIONMEMORY_FREE (3 of 69 remaining) [2021-11-20 06:41:23,240 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr7ASSERT_VIOLATIONMEMORY_FREE (2 of 69 remaining) [2021-11-20 06:41:23,240 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr8ASSERT_VIOLATIONMEMORY_FREE (1 of 69 remaining) [2021-11-20 06:41:23,240 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr9ASSERT_VIOLATIONMEMORY_FREE (0 of 69 remaining) [2021-11-20 06:41:23,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2021-11-20 06:41:23,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:41:23,456 INFO L732 BasicCegarLoop]: Path program histogram: [5, 5, 4, 3, 3, 3, 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] [2021-11-20 06:41:23,460 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-20 06:41:23,460 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 06:41:23,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:41:23 BasicIcfg [2021-11-20 06:41:23,530 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 06:41:23,531 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:41:23,531 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:41:23,531 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:41:23,531 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:33:06" (3/4) ... [2021-11-20 06:41:23,533 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 06:41:23,533 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:41:23,533 INFO L158 Benchmark]: Toolchain (without parser) took 498439.84ms. Allocated memory was 65.0MB in the beginning and 113.2MB in the end (delta: 48.2MB). Free memory was 43.1MB in the beginning and 81.9MB in the end (delta: -38.8MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. [2021-11-20 06:41:23,534 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 65.0MB. Free memory is still 45.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:41:23,534 INFO L158 Benchmark]: CACSL2BoogieTranslator took 871.57ms. Allocated memory was 65.0MB in the beginning and 94.4MB in the end (delta: 29.4MB). Free memory was 43.0MB in the beginning and 75.3MB in the end (delta: -32.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-20 06:41:23,534 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.15ms. Allocated memory is still 94.4MB. Free memory was 75.3MB in the beginning and 72.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:41:23,534 INFO L158 Benchmark]: Boogie Preprocessor took 36.65ms. Allocated memory is still 94.4MB. Free memory was 72.8MB in the beginning and 70.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:41:23,534 INFO L158 Benchmark]: RCFGBuilder took 744.83ms. Allocated memory is still 94.4MB. Free memory was 70.7MB in the beginning and 51.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-20 06:41:23,534 INFO L158 Benchmark]: TraceAbstraction took 496726.34ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 51.5MB in the beginning and 83.0MB in the end (delta: -31.5MB). Peak memory consumption was 50.8MB. Max. memory is 16.1GB. [2021-11-20 06:41:23,534 INFO L158 Benchmark]: Witness Printer took 2.45ms. Allocated memory is still 113.2MB. Free memory was 83.0MB in the beginning and 81.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:41:23,535 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 65.0MB. Free memory is still 45.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 871.57ms. Allocated memory was 65.0MB in the beginning and 94.4MB in the end (delta: 29.4MB). Free memory was 43.0MB in the beginning and 75.3MB in the end (delta: -32.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.15ms. Allocated memory is still 94.4MB. Free memory was 75.3MB in the beginning and 72.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.65ms. Allocated memory is still 94.4MB. Free memory was 72.8MB in the beginning and 70.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 744.83ms. Allocated memory is still 94.4MB. Free memory was 70.7MB in the beginning and 51.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 496726.34ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 51.5MB in the beginning and 83.0MB in the end (delta: -31.5MB). Peak memory consumption was 50.8MB. Max. memory is 16.1GB. * Witness Printer took 2.45ms. Allocated memory is still 113.2MB. Free memory was 83.0MB in the beginning and 81.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 26.4s, 152 PlacesBefore, 65 PlacesAfterwards, 151 TransitionsBefore, 63 TransitionsAfterwards, 960 CoEnabledTransitionPairs, 7 FixpointIterations, 44 TrivialSequentialCompositions, 154 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 203 TotalNumberOfCompositions, 1762 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1303, positive: 1186, positive conditional: 0, positive unconditional: 1186, negative: 117, negative conditional: 0, negative unconditional: 117, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 557, positive: 527, positive conditional: 0, positive unconditional: 527, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 557, positive: 513, positive conditional: 0, positive unconditional: 513, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 44, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 352, positive: 87, positive conditional: 0, positive unconditional: 87, negative: 265, negative conditional: 0, negative unconditional: 265, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1303, positive: 659, positive conditional: 0, positive unconditional: 659, negative: 87, negative conditional: 0, negative unconditional: 87, unknown: 557, unknown conditional: 0, unknown unconditional: 557] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 14, Positive conditional cache size: 0, Positive unconditional cache size: 14, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1069]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1069. Possible FailurePath: [L1070] 0 pthread_t id1, id2; [L1071] 0 struct item *list = ((void *)0); [L1072] FCALL, FORK 0 pthread_create(&id1, ((void *)0), build, list) VAL [\old(argc)=5, argc=5, argv={7:6}, argv={7:6}, id1={2147483630:0}, id2={2147483638:0}, list={0:0}, pthread_create(&id1, ((void *)0), build, list)=0] [L1073] 0 \read(id1) VAL [\old(argc)=5, \read(id1)=0, argc=5, argv={7:6}, argv={7:6}, id1={2147483630:0}, id2={2147483638:0}, list={0:0}] [L1048] 1 struct item *list = (struct item *)plist; VAL [list={2147483646:0}, plist={0:0}, plist={0:0}] [L1050] CALL 1 append(&list) [L1042] 1 struct item *elem = malloc(sizeof *elem); [L1043] EXPR 1 \read(**plist) [L1043] 1 elem->next = *plist [L1044] EXPR 1 elem->next [L1044] EXPR 1 (elem->next) ? elem->next->data : malloc(sizeof *elem) [L1044] EXPR 1 (elem->next) ? elem->next->data : malloc(sizeof *elem) VAL [(elem->next) ? elem->next->data : malloc(sizeof *elem)={2:0}, elem={1:0}, elem->next={0:0}, malloc(sizeof *elem)={2:0}, plist={2147483646:0}, plist={2147483646:0}] [L1044] 1 elem->data = (elem->next) ? elem->next->data : malloc(sizeof *elem) VAL [(elem->next) ? elem->next->data : malloc(sizeof *elem)={2:0}, elem={1:0}, elem->next={0:0}, malloc(sizeof *elem)={2:0}, plist={2147483646:0}, plist={2147483646:0}] [L1045] 1 *plist = elem [L1050] RET 1 append(&list) [L1051] COND FALSE 1 !(__VERIFIER_nondet_int()) [L1073] FCALL, JOIN 1 pthread_join(id1, ((void *)0)) VAL [\old(argc)=5, \read(id1)=0, argc=5, argv={7:6}, argv={7:6}, id1={2147483630:0}, id2={2147483638:0}, list={0:0}] [L1074] FCALL, FORK 0 pthread_create(&id2, ((void *)0), delete, list) VAL [\old(argc)=5, argc=5, argv={7:6}, argv={7:6}, id1={2147483630:0}, id2={2147483638:0}, list={0:0}, plist={0:0}, pthread_create(&id2, ((void *)0), delete, list)=1] [L1075] 0 \read(id2) VAL [\old(argc)=5, \read(id2)=1, argc=5, argv={7:6}, argv={7:6}, id1={2147483630:0}, id2={2147483638:0}, list={0:0}, plist={0:0}] [L1055] 2 struct item *list = (struct item *)plist; [L1056] COND FALSE 2 !(\read(*list)) VAL [list={0:0}, plist={0:0}, plist={0:0}] [L1062] COND FALSE 2 !(\read(*list)) [L1075] FCALL, JOIN 2 pthread_join(id2, ((void *)0)) VAL [\old(argc)=5, \read(id2)=1, \result={0:0}, argc=5, argv={7:6}, argv={7:6}, id1={2147483630:0}, id2={2147483638:0}, list={0:0}, list={0:0}, plist={0:0}, plist={0:0}] [L1076] 0 return 0; [L1076] 0 return 0; [L1076] 0 return 0; - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1072]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1072]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1073]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1073]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1074]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1074]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1075]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1075]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1072]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1074]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1057]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1057]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 240 locations, 69 error locations. Started 1 CEGAR loops. OverallTime: 496.4s, OverallIterations: 61, TraceHistogramMax: 3, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 47.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 26.5s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 969 SdHoareTripleChecker+Valid, 17.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 969 mSDsluCounter, 86 SdHoareTripleChecker+Invalid, 15.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 4034 IncrementalHoareTripleChecker+Unchecked, 1685 mSDsCounter, 198 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4015 IncrementalHoareTripleChecker+Invalid, 8248 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 198 mSolverCounterUnsat, 44 mSDtfsCounter, 4015 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1078 GetRequests, 512 SyntacticMatches, 42 SemanticMatches, 524 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 962 ImplicationChecksByTransitivity, 242.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=170occurred in iteration=0, InterpolantAutomatonStates: 475, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 60 MinimizatonAttempts, 600 StatesRemovedByMinimization, 36 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 5.1s SatisfiabilityAnalysisTime, 401.5s InterpolantComputationTime, 592 NumberOfCodeBlocks, 592 NumberOfCodeBlocksAsserted, 73 NumberOfCheckSat, 1030 ConstructedInterpolants, 582 QuantifiedInterpolants, 30700 SizeOfPredicates, 524 NumberOfNonLiveVariables, 5891 ConjunctsInSsa, 765 ConjunctsInUnsatCore, 120 InterpolantComputations, 78 PerfectInterpolantSequences, 27/158 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-20 06:41:23,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a141e982-15e4-4bb5-9877-a0e3d809cdf0/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample