./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y --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 85fe539c4a9811cd5d49f239f4680cc0b3752a2958e9f287c34e302b923af4f9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:44:58,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:44:58,364 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:44:58,429 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:44:58,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:44:58,434 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:44:58,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:44:58,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:44:58,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:44:58,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:44:58,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:44:58,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:44:58,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:44:58,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:44:58,457 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:44:58,458 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:44:58,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:44:58,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:44:58,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:44:58,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:44:58,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:44:58,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:44:58,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:44:58,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:44:58,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:44:58,477 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:44:58,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:44:58,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:44:58,480 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:44:58,481 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:44:58,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:44:58,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:44:58,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:44:58,485 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:44:58,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:44:58,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:44:58,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:44:58,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:44:58,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:44:58,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:44:58,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:44:58,493 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-13 18:44:58,519 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:44:58,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:44:58,520 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:44:58,520 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:44:58,521 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:44:58,521 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:44:58,522 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:44:58,522 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:44:58,523 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:44:58,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:44:58,523 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:44:58,524 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 18:44:58,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:44:58,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:44:58,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:44:58,525 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 18:44:58,525 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 18:44:58,525 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 18:44:58,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:44:58,526 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 18:44:58,526 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:44:58,526 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:44:58,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:44:58,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:44:58,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:44:58,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:44:58,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:44:58,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:44:58,528 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:44:58,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:44:58,529 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:44:58,529 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_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85fe539c4a9811cd5d49f239f4680cc0b3752a2958e9f287c34e302b923af4f9 [2021-11-13 18:44:58,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:44:58,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:44:58,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:44:58,892 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:44:58,893 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:44:58,894 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-1.i [2021-11-13 18:44:58,969 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/data/f416b3582/1912cbe6d02943cfab8b1ab9892cf16d/FLAG19f7bc498 [2021-11-13 18:44:59,784 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:44:59,785 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-1.i [2021-11-13 18:44:59,811 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/data/f416b3582/1912cbe6d02943cfab8b1ab9892cf16d/FLAG19f7bc498 [2021-11-13 18:44:59,907 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/data/f416b3582/1912cbe6d02943cfab8b1ab9892cf16d [2021-11-13 18:44:59,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:44:59,913 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 18:44:59,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:44:59,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:44:59,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:44:59,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:44:59" (1/1) ... [2021-11-13 18:44:59,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20f043e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:44:59, skipping insertion in model container [2021-11-13 18:44:59,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:44:59" (1/1) ... [2021-11-13 18:44:59,945 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:45:00,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:45:00,672 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-1.i[33022,33035] [2021-11-13 18:45:01,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:45:01,067 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) [2021-11-13 18:45:01,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@676befce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:45:01, skipping insertion in model container [2021-11-13 18:45:01,069 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:45:01,069 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-13 18:45:01,072 INFO L158 Benchmark]: Toolchain (without parser) took 1156.84ms. Allocated memory was 90.2MB in the beginning and 132.1MB in the end (delta: 41.9MB). Free memory was 49.7MB in the beginning and 87.9MB in the end (delta: -38.1MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. [2021-11-13 18:45:01,073 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 90.2MB. Free memory is still 69.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:45:01,074 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1153.79ms. Allocated memory was 90.2MB in the beginning and 132.1MB in the end (delta: 41.9MB). Free memory was 49.5MB in the beginning and 87.9MB in the end (delta: -38.3MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. [2021-11-13 18:45:01,076 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 90.2MB. Free memory is still 69.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1153.79ms. Allocated memory was 90.2MB in the beginning and 132.1MB in the end (delta: 41.9MB). Free memory was 49.5MB in the beginning and 87.9MB in the end (delta: -38.3MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 734]: 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_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y --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 85fe539c4a9811cd5d49f239f4680cc0b3752a2958e9f287c34e302b923af4f9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:45:03,983 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:45:03,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:45:04,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:45:04,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:45:04,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:45:04,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:45:04,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:45:04,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:45:04,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:45:04,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:45:04,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:45:04,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:45:04,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:45:04,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:45:04,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:45:04,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:45:04,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:45:04,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:45:04,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:45:04,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:45:04,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:45:04,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:45:04,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:45:04,147 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:45:04,148 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:45:04,148 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:45:04,151 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:45:04,151 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:45:04,153 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:45:04,153 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:45:04,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:45:04,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:45:04,159 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:45:04,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:45:04,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:45:04,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:45:04,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:45:04,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:45:04,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:45:04,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:45:04,167 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-13 18:45:04,222 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:45:04,223 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:45:04,224 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:45:04,224 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:45:04,225 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:45:04,225 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:45:04,227 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:45:04,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:45:04,228 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:45:04,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:45:04,230 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:45:04,230 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 18:45:04,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:45:04,230 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:45:04,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:45:04,231 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 18:45:04,231 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 18:45:04,232 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 18:45:04,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:45:04,232 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 18:45:04,232 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 18:45:04,233 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 18:45:04,233 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:45:04,233 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:45:04,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:45:04,234 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:45:04,234 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:45:04,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:45:04,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:45:04,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:45:04,235 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 18:45:04,236 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 18:45:04,236 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:45:04,236 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 18:45:04,237 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_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85fe539c4a9811cd5d49f239f4680cc0b3752a2958e9f287c34e302b923af4f9 [2021-11-13 18:45:04,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:45:04,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:45:04,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:45:04,837 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:45:04,838 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:45:04,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-1.i [2021-11-13 18:45:04,936 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/data/b3113e0ba/095ae17d0a854d46a7cde9e845289d48/FLAG88cfd5d95 [2021-11-13 18:45:05,947 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:45:05,948 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-1.i [2021-11-13 18:45:05,969 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/data/b3113e0ba/095ae17d0a854d46a7cde9e845289d48/FLAG88cfd5d95 [2021-11-13 18:45:06,033 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/data/b3113e0ba/095ae17d0a854d46a7cde9e845289d48 [2021-11-13 18:45:06,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:45:06,038 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 18:45:06,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:45:06,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:45:06,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:45:06,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:45:06" (1/1) ... [2021-11-13 18:45:06,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23e63ff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:45:06, skipping insertion in model container [2021-11-13 18:45:06,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:45:06" (1/1) ... [2021-11-13 18:45:06,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:45:06,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:45:06,792 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-1.i[33022,33035] [2021-11-13 18:45:07,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:45:07,152 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 18:45:07,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:45:07,223 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-1.i[33022,33035] [2021-11-13 18:45:07,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:45:07,441 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:45:07,496 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-1.i[33022,33035] [2021-11-13 18:45:07,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:45:07,761 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:45:07,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:45:07 WrapperNode [2021-11-13 18:45:07,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:45:07,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:45:07,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:45:07,764 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:45:07,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:45:07" (1/1) ... [2021-11-13 18:45:07,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:45:07" (1/1) ... [2021-11-13 18:45:07,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:45:07" (1/1) ... [2021-11-13 18:45:07,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:45:07" (1/1) ... [2021-11-13 18:45:08,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:45:07" (1/1) ... [2021-11-13 18:45:08,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:45:07" (1/1) ... [2021-11-13 18:45:08,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:45:07" (1/1) ... [2021-11-13 18:45:08,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:45:08,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:45:08,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:45:08,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:45:08,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:45:07" (1/1) ... [2021-11-13 18:45:08,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:45:08,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:45:08,165 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:45:08,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:45:08,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-13 18:45:08,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:45:08,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 18:45:08,222 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-13 18:45:08,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-13 18:45:08,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-13 18:45:08,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-13 18:45:08,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-13 18:45:08,227 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-13 18:45:08,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 18:45:08,228 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-13 18:45:08,228 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-13 18:45:08,228 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 18:45:08,228 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-13 18:45:08,229 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-13 18:45:08,229 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-13 18:45:08,229 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-13 18:45:08,229 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-13 18:45:08,229 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-13 18:45:08,229 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-13 18:45:08,229 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-13 18:45:08,230 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-13 18:45:08,230 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-13 18:45:08,230 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-13 18:45:08,230 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-13 18:45:08,230 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-13 18:45:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-13 18:45:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-13 18:45:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-13 18:45:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-13 18:45:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-13 18:45:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-13 18:45:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-13 18:45:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-13 18:45:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-13 18:45:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-13 18:45:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-13 18:45:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-13 18:45:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-13 18:45:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-13 18:45:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-13 18:45:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-13 18:45:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-13 18:45:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-13 18:45:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-13 18:45:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-13 18:45:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-13 18:45:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-13 18:45:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-13 18:45:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-13 18:45:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-13 18:45:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-13 18:45:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-13 18:45:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-13 18:45:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-13 18:45:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-13 18:45:08,236 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-13 18:45:08,236 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-13 18:45:08,236 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-13 18:45:08,236 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-13 18:45:08,236 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-13 18:45:08,237 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-13 18:45:08,237 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-13 18:45:08,237 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-13 18:45:08,237 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-13 18:45:08,237 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-13 18:45:08,238 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-13 18:45:08,238 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-13 18:45:08,238 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-13 18:45:08,238 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-13 18:45:08,239 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-13 18:45:08,239 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-13 18:45:08,239 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-13 18:45:08,239 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-13 18:45:08,239 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-13 18:45:08,240 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-13 18:45:08,240 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-13 18:45:08,240 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-13 18:45:08,240 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-13 18:45:08,240 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-13 18:45:08,240 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-13 18:45:08,241 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-13 18:45:08,241 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-13 18:45:08,241 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-13 18:45:08,241 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-13 18:45:08,241 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-13 18:45:08,242 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-13 18:45:08,242 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-13 18:45:08,242 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-13 18:45:08,242 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-13 18:45:08,242 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-13 18:45:08,242 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-13 18:45:08,243 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-13 18:45:08,243 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-13 18:45:08,243 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-13 18:45:08,243 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-13 18:45:08,243 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-13 18:45:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-13 18:45:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-13 18:45:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-13 18:45:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-13 18:45:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-13 18:45:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-13 18:45:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-13 18:45:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-13 18:45:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-13 18:45:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-13 18:45:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-13 18:45:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-13 18:45:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-13 18:45:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-13 18:45:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-13 18:45:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-13 18:45:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-13 18:45:08,247 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-13 18:45:08,247 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-13 18:45:08,247 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-13 18:45:08,247 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-13 18:45:08,247 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-13 18:45:08,248 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-13 18:45:08,248 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-13 18:45:08,248 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-13 18:45:08,248 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-13 18:45:08,281 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-13 18:45:08,281 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-13 18:45:08,281 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-13 18:45:08,281 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-13 18:45:08,281 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-13 18:45:08,282 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-13 18:45:08,282 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-13 18:45:08,282 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-13 18:45:08,282 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-13 18:45:08,282 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-13 18:45:08,282 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-13 18:45:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-13 18:45:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-13 18:45:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-13 18:45:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-13 18:45:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-13 18:45:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-13 18:45:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-13 18:45:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-13 18:45:08,284 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-13 18:45:08,284 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-13 18:45:08,284 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-13 18:45:08,284 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-13 18:45:08,284 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-13 18:45:08,284 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-13 18:45:08,284 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-13 18:45:08,285 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-13 18:45:08,285 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-13 18:45:08,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-13 18:45:08,285 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-13 18:45:08,285 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-13 18:45:08,285 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-13 18:45:08,285 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-13 18:45:08,286 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-13 18:45:08,286 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-13 18:45:08,286 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-13 18:45:08,286 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-13 18:45:08,286 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-13 18:45:08,286 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-13 18:45:08,286 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-13 18:45:08,286 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-13 18:45:08,287 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-13 18:45:08,287 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-13 18:45:08,287 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-13 18:45:08,287 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-13 18:45:08,287 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-13 18:45:08,287 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-13 18:45:08,287 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-13 18:45:08,288 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-13 18:45:08,288 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-13 18:45:08,288 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-13 18:45:08,288 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-13 18:45:08,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:45:08,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 18:45:08,288 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-13 18:45:08,288 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-13 18:45:08,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:45:08,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 18:45:08,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 18:45:08,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 18:45:08,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:45:08,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:45:08,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 18:45:08,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:45:08,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-13 18:45:08,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 18:45:08,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:45:08,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 18:45:08,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 18:45:08,999 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-13 18:45:20,515 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:45:20,515 INFO L299 CfgBuilder]: Removed 151 assume(true) statements. [2021-11-13 18:45:20,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:45:20 BoogieIcfgContainer [2021-11-13 18:45:20,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:45:20,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:45:20,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:45:20,528 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:45:20,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:45:06" (1/3) ... [2021-11-13 18:45:20,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1190f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:45:20, skipping insertion in model container [2021-11-13 18:45:20,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:45:07" (2/3) ... [2021-11-13 18:45:20,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1190f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:45:20, skipping insertion in model container [2021-11-13 18:45:20,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:45:20" (3/3) ... [2021-11-13 18:45:20,532 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test10-1.i [2021-11-13 18:45:20,539 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:45:20,539 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 990 error locations. [2021-11-13 18:45:20,598 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:45:20,606 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 [2021-11-13 18:45:20,607 INFO L340 AbstractCegarLoop]: Starting to check reachability of 990 error locations. [2021-11-13 18:45:20,694 INFO L276 IsEmpty]: Start isEmpty. Operand has 2065 states, 1059 states have (on average 2.203021718602455) internal successors, (2333), 2047 states have internal predecessors, (2333), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 18:45:20,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-13 18:45:20,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:45:20,704 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:45:20,705 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 18:45:20,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:45:20,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1998037697, now seen corresponding path program 1 times [2021-11-13 18:45:20,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:45:20,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1871048462] [2021-11-13 18:45:20,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:45:20,725 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:45:20,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:45:20,731 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:45:20,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 18:45:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:45:21,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:45:21,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:45:21,168 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 [2021-11-13 18:45:21,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:21,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:45:21,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:21,267 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:45:21,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1871048462] [2021-11-13 18:45:21,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1871048462] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:45:21,268 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:45:21,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 18:45:21,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655662506] [2021-11-13 18:45:21,271 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:45:21,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:45:21,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:45:21,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:45:21,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:45:21,356 INFO L87 Difference]: Start difference. First operand has 2065 states, 1059 states have (on average 2.203021718602455) internal successors, (2333), 2047 states have internal predecessors, (2333), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:45:26,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:45:26,457 INFO L93 Difference]: Finished difference Result 2563 states and 2729 transitions. [2021-11-13 18:45:26,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:45:26,469 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-13 18:45:26,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:45:26,530 INFO L225 Difference]: With dead ends: 2563 [2021-11-13 18:45:26,530 INFO L226 Difference]: Without dead ends: 2560 [2021-11-13 18:45:26,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:45:26,547 INFO L933 BasicCegarLoop]: 1278 mSDtfsCounter, 1951 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3975.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1961 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.98ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4868.35ms IncrementalHoareTripleChecker+Time [2021-11-13 18:45:26,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1961 Valid, 1656 Invalid, 1298 Unknown, 0 Unchecked, 37.98ms Time], IncrementalHoareTripleChecker [23 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 4868.35ms Time] [2021-11-13 18:45:26,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2021-11-13 18:45:26,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 2206. [2021-11-13 18:45:26,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2206 states, 1225 states have (on average 2.036734693877551) internal successors, (2495), 2187 states have internal predecessors, (2495), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 18:45:26,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2206 states to 2206 states and 2530 transitions. [2021-11-13 18:45:26,775 INFO L78 Accepts]: Start accepts. Automaton has 2206 states and 2530 transitions. Word has length 7 [2021-11-13 18:45:26,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:45:26,777 INFO L470 AbstractCegarLoop]: Abstraction has 2206 states and 2530 transitions. [2021-11-13 18:45:26,777 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:45:26,777 INFO L276 IsEmpty]: Start isEmpty. Operand 2206 states and 2530 transitions. [2021-11-13 18:45:26,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-13 18:45:26,778 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:45:26,778 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:45:26,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:45:26,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:45:26,998 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 18:45:27,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:45:27,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1998037696, now seen corresponding path program 1 times [2021-11-13 18:45:27,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:45:27,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410979929] [2021-11-13 18:45:27,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:45:27,007 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:45:27,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:45:27,009 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:45:27,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 18:45:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:45:27,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:45:27,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:45:27,353 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 [2021-11-13 18:45:27,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:27,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:45:27,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:27,474 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:45:27,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1410979929] [2021-11-13 18:45:27,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1410979929] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:45:27,474 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:45:27,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 18:45:27,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236334395] [2021-11-13 18:45:27,475 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:45:27,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:45:27,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:45:27,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:45:27,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:45:27,478 INFO L87 Difference]: Start difference. First operand 2206 states and 2530 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:45:39,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:45:39,270 INFO L93 Difference]: Finished difference Result 3307 states and 3731 transitions. [2021-11-13 18:45:39,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:45:39,273 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-13 18:45:39,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:45:39,296 INFO L225 Difference]: With dead ends: 3307 [2021-11-13 18:45:39,296 INFO L226 Difference]: Without dead ends: 3307 [2021-11-13 18:45:39,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:45:39,299 INFO L933 BasicCegarLoop]: 1572 mSDtfsCounter, 3094 mSDsluCounter, 1373 mSDsCounter, 0 mSdLazyCounter, 1733 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10101.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3102 SdHoareTripleChecker+Valid, 2945 SdHoareTripleChecker+Invalid, 1760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.87ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11603.29ms IncrementalHoareTripleChecker+Time [2021-11-13 18:45:39,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3102 Valid, 2945 Invalid, 1760 Unknown, 0 Unchecked, 32.87ms Time], IncrementalHoareTripleChecker [27 Valid, 1733 Invalid, 0 Unknown, 0 Unchecked, 11603.29ms Time] [2021-11-13 18:45:39,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3307 states. [2021-11-13 18:45:39,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3307 to 2370. [2021-11-13 18:45:39,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2370 states, 1401 states have (on average 2.0249821556031407) internal successors, (2837), 2351 states have internal predecessors, (2837), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 18:45:39,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2370 states to 2370 states and 2872 transitions. [2021-11-13 18:45:39,396 INFO L78 Accepts]: Start accepts. Automaton has 2370 states and 2872 transitions. Word has length 7 [2021-11-13 18:45:39,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:45:39,396 INFO L470 AbstractCegarLoop]: Abstraction has 2370 states and 2872 transitions. [2021-11-13 18:45:39,397 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:45:39,398 INFO L276 IsEmpty]: Start isEmpty. Operand 2370 states and 2872 transitions. [2021-11-13 18:45:39,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 18:45:39,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:45:39,399 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:45:39,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:45:39,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:45:39,613 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 18:45:39,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:45:39,614 INFO L85 PathProgramCache]: Analyzing trace with hash -372854650, now seen corresponding path program 1 times [2021-11-13 18:45:39,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:45:39,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417911357] [2021-11-13 18:45:39,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:45:39,615 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:45:39,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:45:39,616 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:45:39,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 18:45:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:45:39,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:45:39,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:45:39,905 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 [2021-11-13 18:45:39,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:39,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:45:39,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:39,970 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:45:39,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [417911357] [2021-11-13 18:45:39,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [417911357] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:45:39,971 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:45:39,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 18:45:39,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228979483] [2021-11-13 18:45:39,971 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:45:39,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:45:39,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:45:39,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:45:39,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:45:39,973 INFO L87 Difference]: Start difference. First operand 2370 states and 2872 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:45:44,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:45:44,217 INFO L93 Difference]: Finished difference Result 3108 states and 3610 transitions. [2021-11-13 18:45:44,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:45:44,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-13 18:45:44,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:45:44,242 INFO L225 Difference]: With dead ends: 3108 [2021-11-13 18:45:44,242 INFO L226 Difference]: Without dead ends: 3108 [2021-11-13 18:45:44,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:45:44,244 INFO L933 BasicCegarLoop]: 1954 mSDtfsCounter, 1987 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3437.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 2605 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.99ms SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4151.43ms IncrementalHoareTripleChecker+Time [2021-11-13 18:45:44,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1997 Valid, 2605 Invalid, 1475 Unknown, 0 Unchecked, 15.99ms Time], IncrementalHoareTripleChecker [102 Valid, 1373 Invalid, 0 Unknown, 0 Unchecked, 4151.43ms Time] [2021-11-13 18:45:44,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3108 states. [2021-11-13 18:45:44,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3108 to 2279. [2021-11-13 18:45:44,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2279 states, 1401 states have (on average 1.9357601713062098) internal successors, (2712), 2260 states have internal predecessors, (2712), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 18:45:44,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 2747 transitions. [2021-11-13 18:45:44,332 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 2747 transitions. Word has length 12 [2021-11-13 18:45:44,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:45:44,333 INFO L470 AbstractCegarLoop]: Abstraction has 2279 states and 2747 transitions. [2021-11-13 18:45:44,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:45:44,333 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 2747 transitions. [2021-11-13 18:45:44,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 18:45:44,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:45:44,334 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:45:44,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:45:44,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:45:44,564 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 18:45:44,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:45:44,565 INFO L85 PathProgramCache]: Analyzing trace with hash -372854649, now seen corresponding path program 1 times [2021-11-13 18:45:44,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:45:44,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1062327065] [2021-11-13 18:45:44,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:45:44,566 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:45:44,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:45:44,575 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:45:44,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 18:45:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:45:44,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:45:44,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:45:44,920 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 [2021-11-13 18:45:44,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:44,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:45:45,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:45,103 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:45:45,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1062327065] [2021-11-13 18:45:45,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1062327065] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:45:45,104 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:45:45,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 18:45:45,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810274690] [2021-11-13 18:45:45,105 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:45:45,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:45:45,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:45:45,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:45:45,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:45:45,108 INFO L87 Difference]: Start difference. First operand 2279 states and 2747 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:45:54,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:45:54,713 INFO L93 Difference]: Finished difference Result 3236 states and 3639 transitions. [2021-11-13 18:45:54,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:45:54,714 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-13 18:45:54,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:45:54,759 INFO L225 Difference]: With dead ends: 3236 [2021-11-13 18:45:54,759 INFO L226 Difference]: Without dead ends: 3236 [2021-11-13 18:45:54,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:45:54,764 INFO L933 BasicCegarLoop]: 2286 mSDtfsCounter, 2802 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 1552 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8287.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2808 SdHoareTripleChecker+Valid, 3289 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.47ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9499.29ms IncrementalHoareTripleChecker+Time [2021-11-13 18:45:54,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2808 Valid, 3289 Invalid, 1583 Unknown, 0 Unchecked, 19.47ms Time], IncrementalHoareTripleChecker [31 Valid, 1552 Invalid, 0 Unknown, 0 Unchecked, 9499.29ms Time] [2021-11-13 18:45:54,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3236 states. [2021-11-13 18:45:54,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3236 to 2271. [2021-11-13 18:45:54,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2271 states, 1403 states have (on average 1.9187455452601567) internal successors, (2692), 2252 states have internal predecessors, (2692), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 18:45:54,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2271 states to 2271 states and 2727 transitions. [2021-11-13 18:45:54,847 INFO L78 Accepts]: Start accepts. Automaton has 2271 states and 2727 transitions. Word has length 12 [2021-11-13 18:45:54,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:45:54,848 INFO L470 AbstractCegarLoop]: Abstraction has 2271 states and 2727 transitions. [2021-11-13 18:45:54,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:45:54,848 INFO L276 IsEmpty]: Start isEmpty. Operand 2271 states and 2727 transitions. [2021-11-13 18:45:54,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-13 18:45:54,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:45:54,850 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:45:54,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:45:55,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:45:55,064 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr658REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 18:45:55,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:45:55,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1402084466, now seen corresponding path program 1 times [2021-11-13 18:45:55,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:45:55,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707828036] [2021-11-13 18:45:55,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:45:55,066 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:45:55,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:45:55,067 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:45:55,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 18:45:55,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:45:55,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:45:55,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:45:55,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:55,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:45:55,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:55,387 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:45:55,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1707828036] [2021-11-13 18:45:55,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1707828036] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:45:55,388 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:45:55,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 18:45:55,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778099887] [2021-11-13 18:45:55,389 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:45:55,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:45:55,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:45:55,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:45:55,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:45:55,390 INFO L87 Difference]: Start difference. First operand 2271 states and 2727 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:45:55,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:45:55,458 INFO L93 Difference]: Finished difference Result 2229 states and 2684 transitions. [2021-11-13 18:45:55,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:45:55,459 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-13 18:45:55,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:45:55,476 INFO L225 Difference]: With dead ends: 2229 [2021-11-13 18:45:55,476 INFO L226 Difference]: Without dead ends: 2229 [2021-11-13 18:45:55,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:45:55,478 INFO L933 BasicCegarLoop]: 2004 mSDtfsCounter, 1592 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1596 SdHoareTripleChecker+Valid, 3219 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.10ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.57ms IncrementalHoareTripleChecker+Time [2021-11-13 18:45:55,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1596 Valid, 3219 Invalid, 16 Unknown, 0 Unchecked, 9.10ms Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 28.57ms Time] [2021-11-13 18:45:55,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2229 states. [2021-11-13 18:45:55,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2229 to 2229. [2021-11-13 18:45:55,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2229 states, 1385 states have (on average 1.912635379061372) internal successors, (2649), 2210 states have internal predecessors, (2649), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 18:45:55,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2229 states to 2229 states and 2684 transitions. [2021-11-13 18:45:55,548 INFO L78 Accepts]: Start accepts. Automaton has 2229 states and 2684 transitions. Word has length 15 [2021-11-13 18:45:55,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:45:55,550 INFO L470 AbstractCegarLoop]: Abstraction has 2229 states and 2684 transitions. [2021-11-13 18:45:55,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:45:55,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2229 states and 2684 transitions. [2021-11-13 18:45:55,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-13 18:45:55,551 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:45:55,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:45:55,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 18:45:55,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:45:55,767 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr682REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 18:45:55,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:45:55,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1216614472, now seen corresponding path program 1 times [2021-11-13 18:45:55,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:45:55,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1146460376] [2021-11-13 18:45:55,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:45:55,769 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:45:55,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:45:55,771 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:45:55,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 18:45:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:45:56,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:45:56,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:45:56,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:56,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:45:56,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:56,161 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:45:56,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1146460376] [2021-11-13 18:45:56,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1146460376] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:45:56,162 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:45:56,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 18:45:56,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370684850] [2021-11-13 18:45:56,164 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:45:56,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:45:56,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:45:56,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:45:56,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:45:56,165 INFO L87 Difference]: Start difference. First operand 2229 states and 2684 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:45:56,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:45:56,303 INFO L93 Difference]: Finished difference Result 2208 states and 2656 transitions. [2021-11-13 18:45:56,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:45:56,304 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-13 18:45:56,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:45:56,318 INFO L225 Difference]: With dead ends: 2208 [2021-11-13 18:45:56,318 INFO L226 Difference]: Without dead ends: 2208 [2021-11-13 18:45:56,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:45:56,320 INFO L933 BasicCegarLoop]: 1959 mSDtfsCounter, 767 mSDsluCounter, 4383 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 6342 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.29ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.27ms IncrementalHoareTripleChecker+Time [2021-11-13 18:45:56,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [771 Valid, 6342 Invalid, 64 Unknown, 0 Unchecked, 12.29ms Time], IncrementalHoareTripleChecker [32 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 68.27ms Time] [2021-11-13 18:45:56,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2208 states. [2021-11-13 18:45:56,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2208 to 2207. [2021-11-13 18:45:56,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2207 states, 1377 states have (on average 1.9026870007262164) internal successors, (2620), 2188 states have internal predecessors, (2620), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 18:45:56,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 2655 transitions. [2021-11-13 18:45:56,418 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 2655 transitions. Word has length 17 [2021-11-13 18:45:56,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:45:56,419 INFO L470 AbstractCegarLoop]: Abstraction has 2207 states and 2655 transitions. [2021-11-13 18:45:56,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:45:56,419 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 2655 transitions. [2021-11-13 18:45:56,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-13 18:45:56,421 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:45:56,421 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:45:56,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 18:45:56,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:45:56,638 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr334REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 18:45:56,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:45:56,639 INFO L85 PathProgramCache]: Analyzing trace with hash 904627283, now seen corresponding path program 1 times [2021-11-13 18:45:56,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:45:56,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709828183] [2021-11-13 18:45:56,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:45:56,640 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:45:56,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:45:56,641 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:45:56,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 18:45:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:45:56,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:45:56,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:45:57,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:57,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:45:57,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:57,084 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:45:57,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [709828183] [2021-11-13 18:45:57,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [709828183] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:45:57,085 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:45:57,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 18:45:57,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610370871] [2021-11-13 18:45:57,086 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:45:57,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:45:57,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:45:57,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:45:57,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:45:57,088 INFO L87 Difference]: Start difference. First operand 2207 states and 2655 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:45:57,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:45:57,200 INFO L93 Difference]: Finished difference Result 3441 states and 3974 transitions. [2021-11-13 18:45:57,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:45:57,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-11-13 18:45:57,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:45:57,222 INFO L225 Difference]: With dead ends: 3441 [2021-11-13 18:45:57,223 INFO L226 Difference]: Without dead ends: 3441 [2021-11-13 18:45:57,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:45:57,224 INFO L933 BasicCegarLoop]: 3287 mSDtfsCounter, 3762 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3772 SdHoareTripleChecker+Valid, 4693 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.23ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.08ms IncrementalHoareTripleChecker+Time [2021-11-13 18:45:57,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3772 Valid, 4693 Invalid, 22 Unknown, 0 Unchecked, 11.23ms Time], IncrementalHoareTripleChecker [10 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 49.08ms Time] [2021-11-13 18:45:57,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3441 states. [2021-11-13 18:45:57,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3441 to 2129. [2021-11-13 18:45:57,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2129 states, 1323 states have (on average 1.8828420256991685) internal successors, (2491), 2110 states have internal predecessors, (2491), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 18:45:57,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 2526 transitions. [2021-11-13 18:45:57,307 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 2526 transitions. Word has length 24 [2021-11-13 18:45:57,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:45:57,307 INFO L470 AbstractCegarLoop]: Abstraction has 2129 states and 2526 transitions. [2021-11-13 18:45:57,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:45:57,308 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 2526 transitions. [2021-11-13 18:45:57,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-13 18:45:57,309 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:45:57,309 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:45:57,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 18:45:57,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:45:57,524 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr16REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 18:45:57,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:45:57,524 INFO L85 PathProgramCache]: Analyzing trace with hash 759323603, now seen corresponding path program 1 times [2021-11-13 18:45:57,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:45:57,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1643205653] [2021-11-13 18:45:57,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:45:57,525 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:45:57,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:45:57,526 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:45:57,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 18:45:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:45:57,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:45:57,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:45:57,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:57,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:45:57,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:57,925 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:45:57,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1643205653] [2021-11-13 18:45:57,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1643205653] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:45:57,925 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:45:57,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 18:45:57,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321692961] [2021-11-13 18:45:57,926 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:45:57,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:45:57,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:45:57,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:45:57,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:45:57,928 INFO L87 Difference]: Start difference. First operand 2129 states and 2526 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:45:57,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:45:57,996 INFO L93 Difference]: Finished difference Result 3364 states and 3897 transitions. [2021-11-13 18:45:57,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:45:57,997 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-11-13 18:45:57,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:45:58,018 INFO L225 Difference]: With dead ends: 3364 [2021-11-13 18:45:58,018 INFO L226 Difference]: Without dead ends: 3364 [2021-11-13 18:45:58,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:45:58,020 INFO L933 BasicCegarLoop]: 2985 mSDtfsCounter, 1838 mSDsluCounter, 2740 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1848 SdHoareTripleChecker+Valid, 5725 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.17ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.79ms IncrementalHoareTripleChecker+Time [2021-11-13 18:45:58,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1848 Valid, 5725 Invalid, 12 Unknown, 0 Unchecked, 9.17ms Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 17.79ms Time] [2021-11-13 18:45:58,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3364 states. [2021-11-13 18:45:58,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3364 to 2087. [2021-11-13 18:45:58,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2087 states, 1305 states have (on average 1.8758620689655172) internal successors, (2448), 2068 states have internal predecessors, (2448), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 18:45:58,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2087 states to 2087 states and 2483 transitions. [2021-11-13 18:45:58,125 INFO L78 Accepts]: Start accepts. Automaton has 2087 states and 2483 transitions. Word has length 24 [2021-11-13 18:45:58,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:45:58,126 INFO L470 AbstractCegarLoop]: Abstraction has 2087 states and 2483 transitions. [2021-11-13 18:45:58,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:45:58,126 INFO L276 IsEmpty]: Start isEmpty. Operand 2087 states and 2483 transitions. [2021-11-13 18:45:58,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-13 18:45:58,128 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:45:58,128 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:45:58,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 18:45:58,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:45:58,343 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr358REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 18:45:58,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:45:58,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1763452109, now seen corresponding path program 1 times [2021-11-13 18:45:58,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:45:58,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1616008964] [2021-11-13 18:45:58,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:45:58,344 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:45:58,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:45:58,346 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:45:58,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 18:45:58,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:45:58,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:45:58,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:45:58,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:58,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:45:58,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:58,748 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:45:58,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1616008964] [2021-11-13 18:45:58,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1616008964] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:45:58,749 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:45:58,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 18:45:58,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867334340] [2021-11-13 18:45:58,750 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:45:58,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:45:58,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:45:58,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:45:58,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:45:58,751 INFO L87 Difference]: Start difference. First operand 2087 states and 2483 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:45:58,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:45:58,926 INFO L93 Difference]: Finished difference Result 3322 states and 3804 transitions. [2021-11-13 18:45:58,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:45:58,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-11-13 18:45:58,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:45:58,949 INFO L225 Difference]: With dead ends: 3322 [2021-11-13 18:45:58,949 INFO L226 Difference]: Without dead ends: 3322 [2021-11-13 18:45:58,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:45:58,950 INFO L933 BasicCegarLoop]: 2934 mSDtfsCounter, 3608 mSDsluCounter, 4291 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3618 SdHoareTripleChecker+Valid, 7225 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.14ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 100.39ms IncrementalHoareTripleChecker+Time [2021-11-13 18:45:58,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3618 Valid, 7225 Invalid, 84 Unknown, 0 Unchecked, 16.14ms Time], IncrementalHoareTripleChecker [52 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 100.39ms Time] [2021-11-13 18:45:58,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3322 states. [2021-11-13 18:45:59,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3322 to 2049. [2021-11-13 18:45:59,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2049 states, 1281 states have (on average 1.8430913348946136) internal successors, (2361), 2030 states have internal predecessors, (2361), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 18:45:59,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2049 states to 2049 states and 2396 transitions. [2021-11-13 18:45:59,014 INFO L78 Accepts]: Start accepts. Automaton has 2049 states and 2396 transitions. Word has length 26 [2021-11-13 18:45:59,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:45:59,014 INFO L470 AbstractCegarLoop]: Abstraction has 2049 states and 2396 transitions. [2021-11-13 18:45:59,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:45:59,015 INFO L276 IsEmpty]: Start isEmpty. Operand 2049 states and 2396 transitions. [2021-11-13 18:45:59,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-13 18:45:59,016 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:45:59,017 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:45:59,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 18:45:59,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:45:59,232 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr40REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 18:45:59,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:45:59,233 INFO L85 PathProgramCache]: Analyzing trace with hash -434458931, now seen corresponding path program 1 times [2021-11-13 18:45:59,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:45:59,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [113350473] [2021-11-13 18:45:59,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:45:59,234 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:45:59,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:45:59,235 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:45:59,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 18:45:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:45:59,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:45:59,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:45:59,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:59,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:45:59,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:59,671 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:45:59,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [113350473] [2021-11-13 18:45:59,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [113350473] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:45:59,672 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:45:59,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 18:45:59,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475768903] [2021-11-13 18:45:59,672 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:45:59,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:45:59,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:45:59,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:45:59,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:45:59,673 INFO L87 Difference]: Start difference. First operand 2049 states and 2396 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:45:59,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:45:59,809 INFO L93 Difference]: Finished difference Result 3283 states and 3753 transitions. [2021-11-13 18:45:59,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:45:59,810 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-11-13 18:45:59,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:45:59,826 INFO L225 Difference]: With dead ends: 3283 [2021-11-13 18:45:59,826 INFO L226 Difference]: Without dead ends: 3283 [2021-11-13 18:45:59,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:45:59,827 INFO L933 BasicCegarLoop]: 3093 mSDtfsCounter, 1774 mSDsluCounter, 5757 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1784 SdHoareTripleChecker+Valid, 8850 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.73ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.43ms IncrementalHoareTripleChecker+Time [2021-11-13 18:45:59,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1784 Valid, 8850 Invalid, 64 Unknown, 0 Unchecked, 11.73ms Time], IncrementalHoareTripleChecker [32 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 60.43ms Time] [2021-11-13 18:45:59,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3283 states. [2021-11-13 18:45:59,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3283 to 2027. [2021-11-13 18:45:59,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2027 states, 1273 states have (on average 1.8318931657501965) internal successors, (2332), 2008 states have internal predecessors, (2332), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 18:45:59,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 2367 transitions. [2021-11-13 18:45:59,890 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 2367 transitions. Word has length 26 [2021-11-13 18:45:59,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:45:59,891 INFO L470 AbstractCegarLoop]: Abstraction has 2027 states and 2367 transitions. [2021-11-13 18:45:59,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:45:59,891 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 2367 transitions. [2021-11-13 18:45:59,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 18:45:59,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:45:59,893 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:45:59,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 18:46:00,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:46:00,109 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr696REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 18:46:00,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:46:00,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1017481046, now seen corresponding path program 1 times [2021-11-13 18:46:00,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:46:00,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765687697] [2021-11-13 18:46:00,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:46:00,110 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:46:00,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:46:00,111 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:46:00,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 18:46:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:00,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:46:00,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:46:00,333 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 [2021-11-13 18:46:00,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:46:00,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:46:00,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:46:00,601 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:46:00,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765687697] [2021-11-13 18:46:00,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765687697] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:46:00,601 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:46:00,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 18:46:00,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130084098] [2021-11-13 18:46:00,602 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:46:00,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:46:00,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:46:00,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:46:00,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:46:00,604 INFO L87 Difference]: Start difference. First operand 2027 states and 2367 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:46:04,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:46:04,794 INFO L93 Difference]: Finished difference Result 2302 states and 2544 transitions. [2021-11-13 18:46:04,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:46:04,795 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-13 18:46:04,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:46:04,803 INFO L225 Difference]: With dead ends: 2302 [2021-11-13 18:46:04,804 INFO L226 Difference]: Without dead ends: 2302 [2021-11-13 18:46:04,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:46:04,805 INFO L933 BasicCegarLoop]: 1126 mSDtfsCounter, 2347 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 1481 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3452.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2353 SdHoareTripleChecker+Valid, 2027 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.24ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4116.96ms IncrementalHoareTripleChecker+Time [2021-11-13 18:46:04,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2353 Valid, 2027 Invalid, 1502 Unknown, 0 Unchecked, 14.24ms Time], IncrementalHoareTripleChecker [21 Valid, 1481 Invalid, 0 Unknown, 0 Unchecked, 4116.96ms Time] [2021-11-13 18:46:04,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2021-11-13 18:46:04,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 2023. [2021-11-13 18:46:04,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2023 states, 1273 states have (on average 1.828750981932443) internal successors, (2328), 2004 states have internal predecessors, (2328), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 18:46:04,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2023 states to 2023 states and 2363 transitions. [2021-11-13 18:46:04,862 INFO L78 Accepts]: Start accepts. Automaton has 2023 states and 2363 transitions. Word has length 31 [2021-11-13 18:46:04,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:46:04,863 INFO L470 AbstractCegarLoop]: Abstraction has 2023 states and 2363 transitions. [2021-11-13 18:46:04,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:46:04,863 INFO L276 IsEmpty]: Start isEmpty. Operand 2023 states and 2363 transitions. [2021-11-13 18:46:04,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 18:46:04,864 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:46:04,865 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:46:04,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 18:46:05,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:46:05,080 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr697REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 18:46:05,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:46:05,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1017481047, now seen corresponding path program 1 times [2021-11-13 18:46:05,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:46:05,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007581139] [2021-11-13 18:46:05,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:46:05,082 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:46:05,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:46:05,084 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:46:05,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 18:46:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:05,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:46:05,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:46:05,399 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 [2021-11-13 18:46:05,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:46:05,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:46:06,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:46:06,205 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:46:06,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007581139] [2021-11-13 18:46:06,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1007581139] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:46:06,205 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:46:06,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:46:06,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989234307] [2021-11-13 18:46:06,206 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:46:06,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:46:06,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:46:06,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:46:06,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:46:06,208 INFO L87 Difference]: Start difference. First operand 2023 states and 2363 transitions. Second operand has 6 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:46:22,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:46:22,332 INFO L93 Difference]: Finished difference Result 2821 states and 3136 transitions. [2021-11-13 18:46:22,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 18:46:22,333 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-13 18:46:22,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:46:22,344 INFO L225 Difference]: With dead ends: 2821 [2021-11-13 18:46:22,344 INFO L226 Difference]: Without dead ends: 2821 [2021-11-13 18:46:22,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:46:22,345 INFO L933 BasicCegarLoop]: 1371 mSDtfsCounter, 4074 mSDsluCounter, 2362 mSDsCounter, 0 mSdLazyCounter, 2673 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14156.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4074 SdHoareTripleChecker+Valid, 3733 SdHoareTripleChecker+Invalid, 2702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.22ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15917.95ms IncrementalHoareTripleChecker+Time [2021-11-13 18:46:22,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4074 Valid, 3733 Invalid, 2702 Unknown, 0 Unchecked, 26.22ms Time], IncrementalHoareTripleChecker [29 Valid, 2673 Invalid, 0 Unknown, 0 Unchecked, 15917.95ms Time] [2021-11-13 18:46:22,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2821 states. [2021-11-13 18:46:22,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2821 to 2056. [2021-11-13 18:46:22,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2056 states, 1307 states have (on average 1.809487375669472) internal successors, (2365), 2037 states have internal predecessors, (2365), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 18:46:22,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2056 states to 2056 states and 2400 transitions. [2021-11-13 18:46:22,402 INFO L78 Accepts]: Start accepts. Automaton has 2056 states and 2400 transitions. Word has length 31 [2021-11-13 18:46:22,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:46:22,403 INFO L470 AbstractCegarLoop]: Abstraction has 2056 states and 2400 transitions. [2021-11-13 18:46:22,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:46:22,403 INFO L276 IsEmpty]: Start isEmpty. Operand 2056 states and 2400 transitions. [2021-11-13 18:46:22,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-13 18:46:22,405 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:46:22,406 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:46:22,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 18:46:22,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:46:22,621 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr372REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 18:46:22,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:46:22,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1349482981, now seen corresponding path program 1 times [2021-11-13 18:46:22,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:46:22,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1938289358] [2021-11-13 18:46:22,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:46:22,622 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:46:22,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:46:22,624 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:46:22,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 18:46:22,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:22,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:46:22,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:46:22,998 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 [2021-11-13 18:46:23,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:46:23,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:46:23,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:46:23,321 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:46:23,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1938289358] [2021-11-13 18:46:23,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1938289358] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:46:23,322 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:46:23,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 18:46:23,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543938740] [2021-11-13 18:46:23,323 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:46:23,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:46:23,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:46:23,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:46:23,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:46:23,325 INFO L87 Difference]: Start difference. First operand 2056 states and 2400 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:46:30,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:46:30,236 INFO L93 Difference]: Finished difference Result 4329 states and 4874 transitions. [2021-11-13 18:46:30,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:46:30,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2021-11-13 18:46:30,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:46:30,247 INFO L225 Difference]: With dead ends: 4329 [2021-11-13 18:46:30,247 INFO L226 Difference]: Without dead ends: 4329 [2021-11-13 18:46:30,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:46:30,248 INFO L933 BasicCegarLoop]: 1891 mSDtfsCounter, 4631 mSDsluCounter, 2007 mSDsCounter, 0 mSdLazyCounter, 2474 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5692.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4641 SdHoareTripleChecker+Valid, 3898 SdHoareTripleChecker+Invalid, 2525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.03ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6786.78ms IncrementalHoareTripleChecker+Time [2021-11-13 18:46:30,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4641 Valid, 3898 Invalid, 2525 Unknown, 0 Unchecked, 23.03ms Time], IncrementalHoareTripleChecker [51 Valid, 2474 Invalid, 0 Unknown, 0 Unchecked, 6786.78ms Time] [2021-11-13 18:46:30,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4329 states. [2021-11-13 18:46:30,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4329 to 2053. [2021-11-13 18:46:30,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2053 states, 1307 states have (on average 1.801071155317521) internal successors, (2354), 2034 states have internal predecessors, (2354), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 18:46:30,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2053 states to 2053 states and 2389 transitions. [2021-11-13 18:46:30,302 INFO L78 Accepts]: Start accepts. Automaton has 2053 states and 2389 transitions. Word has length 40 [2021-11-13 18:46:30,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:46:30,302 INFO L470 AbstractCegarLoop]: Abstraction has 2053 states and 2389 transitions. [2021-11-13 18:46:30,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:46:30,303 INFO L276 IsEmpty]: Start isEmpty. Operand 2053 states and 2389 transitions. [2021-11-13 18:46:30,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-13 18:46:30,303 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:46:30,304 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:46:30,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-13 18:46:30,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:46:30,516 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr373REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 18:46:30,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:46:30,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1349482980, now seen corresponding path program 1 times [2021-11-13 18:46:30,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:46:30,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825116719] [2021-11-13 18:46:30,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:46:30,517 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:46:30,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:46:30,518 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:46:30,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 18:46:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:30,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:46:30,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:46:30,747 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 [2021-11-13 18:46:31,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:46:31,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:46:31,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:46:31,559 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:46:31,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825116719] [2021-11-13 18:46:31,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825116719] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:46:31,559 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:46:31,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:46:31,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994045233] [2021-11-13 18:46:31,559 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:46:31,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:46:31,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:46:31,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:46:31,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:46:31,561 INFO L87 Difference]: Start difference. First operand 2053 states and 2389 transitions. Second operand has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:46:50,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:46:50,440 INFO L93 Difference]: Finished difference Result 4059 states and 4532 transitions. [2021-11-13 18:46:50,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:46:50,441 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2021-11-13 18:46:50,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:46:50,452 INFO L225 Difference]: With dead ends: 4059 [2021-11-13 18:46:50,452 INFO L226 Difference]: Without dead ends: 4059 [2021-11-13 18:46:50,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:46:50,454 INFO L933 BasicCegarLoop]: 2199 mSDtfsCounter, 5491 mSDsluCounter, 3013 mSDsCounter, 0 mSdLazyCounter, 3188 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16484.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5496 SdHoareTripleChecker+Valid, 5212 SdHoareTripleChecker+Invalid, 3222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.64ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18640.24ms IncrementalHoareTripleChecker+Time [2021-11-13 18:46:50,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5496 Valid, 5212 Invalid, 3222 Unknown, 0 Unchecked, 29.64ms Time], IncrementalHoareTripleChecker [34 Valid, 3188 Invalid, 0 Unknown, 0 Unchecked, 18640.24ms Time] [2021-11-13 18:46:50,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4059 states. [2021-11-13 18:46:50,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4059 to 2053. [2021-11-13 18:46:50,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2053 states, 1307 states have (on average 1.7980107115531752) internal successors, (2350), 2034 states have internal predecessors, (2350), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 18:46:50,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2053 states to 2053 states and 2385 transitions. [2021-11-13 18:46:50,505 INFO L78 Accepts]: Start accepts. Automaton has 2053 states and 2385 transitions. Word has length 40 [2021-11-13 18:46:50,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:46:50,505 INFO L470 AbstractCegarLoop]: Abstraction has 2053 states and 2385 transitions. [2021-11-13 18:46:50,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:46:50,506 INFO L276 IsEmpty]: Start isEmpty. Operand 2053 states and 2385 transitions. [2021-11-13 18:46:50,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-13 18:46:50,507 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:46:50,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:46:50,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-13 18:46:50,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:46:50,722 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr54REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 18:46:50,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:46:50,722 INFO L85 PathProgramCache]: Analyzing trace with hash 958099867, now seen corresponding path program 1 times [2021-11-13 18:46:50,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:46:50,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [531431649] [2021-11-13 18:46:50,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:46:50,723 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:46:50,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:46:50,724 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:46:50,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 18:46:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:50,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:46:50,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:46:51,006 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 [2021-11-13 18:46:51,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:46:51,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:46:51,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:46:51,346 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:46:51,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [531431649] [2021-11-13 18:46:51,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [531431649] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:46:51,347 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:46:51,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 18:46:51,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720740743] [2021-11-13 18:46:51,347 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:46:51,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:46:51,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:46:51,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:46:51,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:46:51,350 INFO L87 Difference]: Start difference. First operand 2053 states and 2385 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:46:57,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:46:57,640 INFO L93 Difference]: Finished difference Result 3942 states and 4463 transitions. [2021-11-13 18:46:57,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:46:57,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2021-11-13 18:46:57,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:46:57,652 INFO L225 Difference]: With dead ends: 3942 [2021-11-13 18:46:57,652 INFO L226 Difference]: Without dead ends: 3942 [2021-11-13 18:46:57,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:46:57,653 INFO L933 BasicCegarLoop]: 1977 mSDtfsCounter, 4098 mSDsluCounter, 1814 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5222.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4105 SdHoareTripleChecker+Valid, 3791 SdHoareTripleChecker+Invalid, 2320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.14ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6174.93ms IncrementalHoareTripleChecker+Time [2021-11-13 18:46:57,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4105 Valid, 3791 Invalid, 2320 Unknown, 0 Unchecked, 22.14ms Time], IncrementalHoareTripleChecker [43 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 6174.93ms Time] [2021-11-13 18:46:57,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3942 states. [2021-11-13 18:46:57,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3942 to 2049. [2021-11-13 18:46:57,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2049 states, 1307 states have (on average 1.7949502677888294) internal successors, (2346), 2030 states have internal predecessors, (2346), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 18:46:57,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2049 states to 2049 states and 2381 transitions. [2021-11-13 18:46:57,739 INFO L78 Accepts]: Start accepts. Automaton has 2049 states and 2381 transitions. Word has length 40 [2021-11-13 18:46:57,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:46:57,740 INFO L470 AbstractCegarLoop]: Abstraction has 2049 states and 2381 transitions. [2021-11-13 18:46:57,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:46:57,741 INFO L276 IsEmpty]: Start isEmpty. Operand 2049 states and 2381 transitions. [2021-11-13 18:46:57,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-13 18:46:57,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:46:57,743 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:46:57,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-13 18:46:57,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:46:57,959 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr55REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 18:46:57,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:46:57,960 INFO L85 PathProgramCache]: Analyzing trace with hash 958099868, now seen corresponding path program 1 times [2021-11-13 18:46:57,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:46:57,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1156410612] [2021-11-13 18:46:57,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:46:57,961 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:46:57,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:46:57,963 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:46:58,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-13 18:46:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:58,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:46:58,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:46:58,294 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 [2021-11-13 18:46:58,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:46:58,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:46:59,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:46:59,217 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:46:59,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1156410612] [2021-11-13 18:46:59,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1156410612] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:46:59,217 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:46:59,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:46:59,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683339135] [2021-11-13 18:46:59,218 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:46:59,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:46:59,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:46:59,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:46:59,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:46:59,219 INFO L87 Difference]: Start difference. First operand 2049 states and 2381 transitions. Second operand has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:47:19,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:47:19,398 INFO L93 Difference]: Finished difference Result 3827 states and 4226 transitions. [2021-11-13 18:47:19,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:47:19,399 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2021-11-13 18:47:19,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:47:19,410 INFO L225 Difference]: With dead ends: 3827 [2021-11-13 18:47:19,411 INFO L226 Difference]: Without dead ends: 3827 [2021-11-13 18:47:19,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:47:19,412 INFO L933 BasicCegarLoop]: 2410 mSDtfsCounter, 2773 mSDsluCounter, 4580 mSDsCounter, 0 mSdLazyCounter, 4606 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17633.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2778 SdHoareTripleChecker+Valid, 6990 SdHoareTripleChecker+Invalid, 4630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.75ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 4606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19933.47ms IncrementalHoareTripleChecker+Time [2021-11-13 18:47:19,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2778 Valid, 6990 Invalid, 4630 Unknown, 0 Unchecked, 34.75ms Time], IncrementalHoareTripleChecker [24 Valid, 4606 Invalid, 0 Unknown, 0 Unchecked, 19933.47ms Time] [2021-11-13 18:47:19,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3827 states. [2021-11-13 18:47:19,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3827 to 2045. [2021-11-13 18:47:19,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2045 states, 1307 states have (on average 1.7918898240244836) internal successors, (2342), 2026 states have internal predecessors, (2342), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 18:47:19,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2045 states to 2045 states and 2377 transitions. [2021-11-13 18:47:19,466 INFO L78 Accepts]: Start accepts. Automaton has 2045 states and 2377 transitions. Word has length 40 [2021-11-13 18:47:19,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:47:19,467 INFO L470 AbstractCegarLoop]: Abstraction has 2045 states and 2377 transitions. [2021-11-13 18:47:19,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:47:19,468 INFO L276 IsEmpty]: Start isEmpty. Operand 2045 states and 2377 transitions. [2021-11-13 18:47:19,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-13 18:47:19,469 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:47:19,470 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:47:19,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-13 18:47:19,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:47:19,685 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr704REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 18:47:19,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:47:19,687 INFO L85 PathProgramCache]: Analyzing trace with hash -2127161085, now seen corresponding path program 1 times [2021-11-13 18:47:19,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:47:19,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20214549] [2021-11-13 18:47:19,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:47:19,688 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:47:19,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:47:19,689 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:47:19,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-13 18:47:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:19,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:47:20,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:47:20,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:47:20,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:47:20,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:47:20,264 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:47:20,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20214549] [2021-11-13 18:47:20,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20214549] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:47:20,265 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:47:20,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 18:47:20,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905220673] [2021-11-13 18:47:20,265 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:47:20,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:47:20,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:47:20,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:47:20,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:47:20,266 INFO L87 Difference]: Start difference. First operand 2045 states and 2377 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:47:20,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:47:20,327 INFO L93 Difference]: Finished difference Result 2039 states and 2363 transitions. [2021-11-13 18:47:20,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:47:20,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2021-11-13 18:47:20,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:47:20,331 INFO L225 Difference]: With dead ends: 2039 [2021-11-13 18:47:20,331 INFO L226 Difference]: Without dead ends: 2039 [2021-11-13 18:47:20,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:47:20,332 INFO L933 BasicCegarLoop]: 1789 mSDtfsCounter, 749 mSDsluCounter, 2818 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 4607 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.66ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.54ms IncrementalHoareTripleChecker+Time [2021-11-13 18:47:20,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [753 Valid, 4607 Invalid, 41 Unknown, 0 Unchecked, 3.66ms Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 36.54ms Time] [2021-11-13 18:47:20,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2039 states. [2021-11-13 18:47:20,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2039 to 2039. [2021-11-13 18:47:20,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2039 states, 1301 states have (on average 1.7893927747886242) internal successors, (2328), 2020 states have internal predecessors, (2328), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 18:47:20,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2039 states to 2039 states and 2363 transitions. [2021-11-13 18:47:20,371 INFO L78 Accepts]: Start accepts. Automaton has 2039 states and 2363 transitions. Word has length 44 [2021-11-13 18:47:20,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:47:20,372 INFO L470 AbstractCegarLoop]: Abstraction has 2039 states and 2363 transitions. [2021-11-13 18:47:20,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:47:20,373 INFO L276 IsEmpty]: Start isEmpty. Operand 2039 states and 2363 transitions. [2021-11-13 18:47:20,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-13 18:47:20,374 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:47:20,374 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:47:20,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-13 18:47:20,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:47:20,590 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr704REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 18:47:20,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:47:20,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1978131895, now seen corresponding path program 1 times [2021-11-13 18:47:20,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:47:20,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [119458978] [2021-11-13 18:47:20,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:47:20,591 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:47:20,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:47:20,592 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:47:20,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-13 18:47:20,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:20,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:47:20,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:47:21,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:47:21,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:47:21,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:47:21,728 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:47:21,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [119458978] [2021-11-13 18:47:21,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [119458978] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:47:21,729 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:47:21,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 18:47:21,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533540278] [2021-11-13 18:47:21,733 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:47:21,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:47:21,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:47:21,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:47:21,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:47:21,735 INFO L87 Difference]: Start difference. First operand 2039 states and 2363 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:47:21,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:47:21,983 INFO L93 Difference]: Finished difference Result 3185 states and 3625 transitions. [2021-11-13 18:47:21,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:47:21,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2021-11-13 18:47:21,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:47:21,992 INFO L225 Difference]: With dead ends: 3185 [2021-11-13 18:47:21,992 INFO L226 Difference]: Without dead ends: 3185 [2021-11-13 18:47:21,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:47:21,994 INFO L933 BasicCegarLoop]: 1809 mSDtfsCounter, 1176 mSDsluCounter, 1674 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 184.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 3483 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.41ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 215.17ms IncrementalHoareTripleChecker+Time [2021-11-13 18:47:21,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1185 Valid, 3483 Invalid, 66 Unknown, 0 Unchecked, 5.41ms Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 215.17ms Time] [2021-11-13 18:47:22,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3185 states. [2021-11-13 18:47:22,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3185 to 2640. [2021-11-13 18:47:22,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2640 states, 1900 states have (on average 1.7689473684210526) internal successors, (3361), 2616 states have internal predecessors, (3361), 23 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 19 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-13 18:47:22,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2640 states to 2640 states and 3406 transitions. [2021-11-13 18:47:22,062 INFO L78 Accepts]: Start accepts. Automaton has 2640 states and 3406 transitions. Word has length 52 [2021-11-13 18:47:22,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:47:22,063 INFO L470 AbstractCegarLoop]: Abstraction has 2640 states and 3406 transitions. [2021-11-13 18:47:22,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:47:22,063 INFO L276 IsEmpty]: Start isEmpty. Operand 2640 states and 3406 transitions. [2021-11-13 18:47:22,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-13 18:47:22,064 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:47:22,064 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:47:22,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-13 18:47:22,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:47:22,279 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr437REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 18:47:22,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:47:22,280 INFO L85 PathProgramCache]: Analyzing trace with hash 792533254, now seen corresponding path program 1 times [2021-11-13 18:47:22,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:47:22,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354127681] [2021-11-13 18:47:22,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:47:22,281 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:47:22,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:47:22,284 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:47:22,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-13 18:47:22,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:22,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:47:22,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:47:22,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:47:22,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:47:22,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:47:22,856 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:47:22,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354127681] [2021-11-13 18:47:22,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [354127681] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:47:22,857 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:47:22,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 18:47:22,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633413422] [2021-11-13 18:47:22,857 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:47:22,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:47:22,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:47:22,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:47:22,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:47:22,859 INFO L87 Difference]: Start difference. First operand 2640 states and 3406 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:47:22,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:47:22,928 INFO L93 Difference]: Finished difference Result 3595 states and 4417 transitions. [2021-11-13 18:47:22,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:47:22,928 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-11-13 18:47:22,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:47:22,937 INFO L225 Difference]: With dead ends: 3595 [2021-11-13 18:47:22,937 INFO L226 Difference]: Without dead ends: 3595 [2021-11-13 18:47:22,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:47:22,938 INFO L933 BasicCegarLoop]: 2859 mSDtfsCounter, 1743 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1753 SdHoareTripleChecker+Valid, 6816 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.61ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.18ms IncrementalHoareTripleChecker+Time [2021-11-13 18:47:22,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1753 Valid, 6816 Invalid, 41 Unknown, 0 Unchecked, 5.61ms Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 34.18ms Time] [2021-11-13 18:47:22,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3595 states. [2021-11-13 18:47:22,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3595 to 2616. [2021-11-13 18:47:22,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2616 states, 1876 states have (on average 1.7702558635394456) internal successors, (3321), 2592 states have internal predecessors, (3321), 23 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 19 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-13 18:47:22,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2616 states to 2616 states and 3366 transitions. [2021-11-13 18:47:22,995 INFO L78 Accepts]: Start accepts. Automaton has 2616 states and 3366 transitions. Word has length 55 [2021-11-13 18:47:22,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:47:22,995 INFO L470 AbstractCegarLoop]: Abstraction has 2616 states and 3366 transitions. [2021-11-13 18:47:22,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:47:22,996 INFO L276 IsEmpty]: Start isEmpty. Operand 2616 states and 3366 transitions. [2021-11-13 18:47:22,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-13 18:47:22,997 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:47:22,997 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:47:23,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-13 18:47:23,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:47:23,212 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr73REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 18:47:23,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:47:23,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1073849574, now seen corresponding path program 1 times [2021-11-13 18:47:23,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:47:23,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1435483380] [2021-11-13 18:47:23,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:47:23,213 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:47:23,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:47:23,215 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:47:23,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-13 18:47:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:23,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:47:23,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:47:23,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:47:23,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:47:23,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:47:23,908 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:47:23,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1435483380] [2021-11-13 18:47:23,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1435483380] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:47:23,908 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:47:23,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 18:47:23,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152950275] [2021-11-13 18:47:23,909 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:47:23,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:47:23,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:47:23,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:47:23,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:47:23,910 INFO L87 Difference]: Start difference. First operand 2616 states and 3366 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:47:23,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:47:23,995 INFO L93 Difference]: Finished difference Result 3340 states and 3915 transitions. [2021-11-13 18:47:23,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:47:23,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2021-11-13 18:47:23,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:47:24,004 INFO L225 Difference]: With dead ends: 3340 [2021-11-13 18:47:24,005 INFO L226 Difference]: Without dead ends: 3340 [2021-11-13 18:47:24,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:47:24,006 INFO L933 BasicCegarLoop]: 2900 mSDtfsCounter, 1734 mSDsluCounter, 4048 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1744 SdHoareTripleChecker+Valid, 6948 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.13ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.26ms IncrementalHoareTripleChecker+Time [2021-11-13 18:47:24,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1744 Valid, 6948 Invalid, 41 Unknown, 0 Unchecked, 8.13ms Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 37.26ms Time] [2021-11-13 18:47:24,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3340 states. [2021-11-13 18:47:24,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3340 to 2604. [2021-11-13 18:47:24,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2604 states, 1864 states have (on average 1.770922746781116) internal successors, (3301), 2580 states have internal predecessors, (3301), 23 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 19 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-13 18:47:24,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2604 states to 2604 states and 3346 transitions. [2021-11-13 18:47:24,062 INFO L78 Accepts]: Start accepts. Automaton has 2604 states and 3346 transitions. Word has length 58 [2021-11-13 18:47:24,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:47:24,063 INFO L470 AbstractCegarLoop]: Abstraction has 2604 states and 3346 transitions. [2021-11-13 18:47:24,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:47:24,063 INFO L276 IsEmpty]: Start isEmpty. Operand 2604 states and 3346 transitions. [2021-11-13 18:47:24,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-13 18:47:24,064 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:47:24,064 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:47:24,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-13 18:47:24,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:47:24,281 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 18:47:24,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:47:24,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1070168250, now seen corresponding path program 1 times [2021-11-13 18:47:24,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:47:24,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709549061] [2021-11-13 18:47:24,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:47:24,282 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:47:24,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:47:24,284 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:47:24,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-13 18:47:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:24,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:47:24,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:47:24,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:47:24,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:47:24,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:47:24,755 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-13 18:47:24,755 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 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-13 18:47:24,830 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-13 18:47:24,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-13 18:47:24,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:47:24,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:47:25,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:47:25,167 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:47:25,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709549061] [2021-11-13 18:47:25,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1709549061] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:47:25,167 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:47:25,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 18:47:25,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103254684] [2021-11-13 18:47:25,167 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:47:25,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:47:25,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:47:25,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:47:25,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:47:25,169 INFO L87 Difference]: Start difference. First operand 2604 states and 3346 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:47:28,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:47:28,672 INFO L93 Difference]: Finished difference Result 2571 states and 3312 transitions. [2021-11-13 18:47:28,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:47:28,673 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2021-11-13 18:47:28,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:47:28,676 INFO L225 Difference]: With dead ends: 2571 [2021-11-13 18:47:28,676 INFO L226 Difference]: Without dead ends: 2571 [2021-11-13 18:47:28,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:47:28,677 INFO L933 BasicCegarLoop]: 1690 mSDtfsCounter, 755 mSDsluCounter, 5781 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2981.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 7471 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.08ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3432.19ms IncrementalHoareTripleChecker+Time [2021-11-13 18:47:28,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [759 Valid, 7471 Invalid, 757 Unknown, 0 Unchecked, 11.08ms Time], IncrementalHoareTripleChecker [3 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 3432.19ms Time] [2021-11-13 18:47:28,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2571 states. [2021-11-13 18:47:28,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2571 to 2570. [2021-11-13 18:47:28,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2570 states, 1830 states have (on average 1.7846994535519125) internal successors, (3266), 2546 states have internal predecessors, (3266), 23 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 19 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-13 18:47:28,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2570 states to 2570 states and 3311 transitions. [2021-11-13 18:47:28,723 INFO L78 Accepts]: Start accepts. Automaton has 2570 states and 3311 transitions. Word has length 61 [2021-11-13 18:47:28,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:47:28,724 INFO L470 AbstractCegarLoop]: Abstraction has 2570 states and 3311 transitions. [2021-11-13 18:47:28,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:47:28,724 INFO L276 IsEmpty]: Start isEmpty. Operand 2570 states and 3311 transitions. [2021-11-13 18:47:28,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-13 18:47:28,725 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:47:28,725 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:47:28,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-13 18:47:28,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:47:28,942 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr437REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 18:47:28,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:47:28,943 INFO L85 PathProgramCache]: Analyzing trace with hash 170031546, now seen corresponding path program 1 times [2021-11-13 18:47:28,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:47:28,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305588732] [2021-11-13 18:47:28,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:47:28,944 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:47:28,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:47:28,945 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:47:28,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-13 18:47:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:29,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:47:29,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:47:29,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:47:29,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:47:30,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:47:30,222 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:47:30,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305588732] [2021-11-13 18:47:30,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305588732] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:47:30,223 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:47:30,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 18:47:30,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71179756] [2021-11-13 18:47:30,223 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:47:30,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:47:30,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:47:30,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:47:30,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:47:30,224 INFO L87 Difference]: Start difference. First operand 2570 states and 3311 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:47:30,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:47:30,414 INFO L93 Difference]: Finished difference Result 3551 states and 4406 transitions. [2021-11-13 18:47:30,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:47:30,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2021-11-13 18:47:30,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:47:30,420 INFO L225 Difference]: With dead ends: 3551 [2021-11-13 18:47:30,420 INFO L226 Difference]: Without dead ends: 3551 [2021-11-13 18:47:30,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:47:30,421 INFO L933 BasicCegarLoop]: 2015 mSDtfsCounter, 866 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 139.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 3680 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.59ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 165.13ms IncrementalHoareTripleChecker+Time [2021-11-13 18:47:30,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [874 Valid, 3680 Invalid, 64 Unknown, 0 Unchecked, 3.59ms Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 165.13ms Time] [2021-11-13 18:47:30,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3551 states. [2021-11-13 18:47:30,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3551 to 3215. [2021-11-13 18:47:30,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3215 states, 2472 states have (on average 1.756472491909385) internal successors, (4342), 3185 states have internal predecessors, (4342), 29 states have call successors, (29), 5 states have call predecessors, (29), 4 states have return successors, (28), 25 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-13 18:47:30,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 4399 transitions. [2021-11-13 18:47:30,485 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 4399 transitions. Word has length 63 [2021-11-13 18:47:30,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:47:30,486 INFO L470 AbstractCegarLoop]: Abstraction has 3215 states and 4399 transitions. [2021-11-13 18:47:30,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:47:30,486 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 4399 transitions. [2021-11-13 18:47:30,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-13 18:47:30,487 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:47:30,487 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:47:30,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-13 18:47:30,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:47:30,701 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr391REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 18:47:30,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:47:30,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1536826342, now seen corresponding path program 1 times [2021-11-13 18:47:30,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:47:30,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92706112] [2021-11-13 18:47:30,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:47:30,703 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:47:30,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:47:30,704 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:47:30,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-13 18:47:31,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:31,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:47:31,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:47:31,198 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 [2021-11-13 18:47:31,208 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 [2021-11-13 18:47:31,972 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-13 18:47:31,973 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 25 treesize of output 27 [2021-11-13 18:47:31,978 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-13 18:47:31,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2021-11-13 18:47:32,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:47:32,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:47:37,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:47:37,567 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:47:37,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92706112] [2021-11-13 18:47:37,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [92706112] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:47:37,567 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:47:37,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:47:37,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531631279] [2021-11-13 18:47:37,568 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:47:37,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:47:37,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:47:37,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:47:37,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-13 18:47:37,569 INFO L87 Difference]: Start difference. First operand 3215 states and 4399 transitions. Second operand has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:47:48,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:47:48,725 INFO L93 Difference]: Finished difference Result 4702 states and 6324 transitions. [2021-11-13 18:47:48,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:47:48,725 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2021-11-13 18:47:48,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:47:48,731 INFO L225 Difference]: With dead ends: 4702 [2021-11-13 18:47:48,731 INFO L226 Difference]: Without dead ends: 4702 [2021-11-13 18:47:48,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-13 18:47:48,732 INFO L933 BasicCegarLoop]: 1248 mSDtfsCounter, 2734 mSDsluCounter, 2268 mSDsCounter, 0 mSdLazyCounter, 2315 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9492.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2749 SdHoareTripleChecker+Valid, 3516 SdHoareTripleChecker+Invalid, 4804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.48ms SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2403 IncrementalHoareTripleChecker+Unchecked, 10987.14ms IncrementalHoareTripleChecker+Time [2021-11-13 18:47:48,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2749 Valid, 3516 Invalid, 4804 Unknown, 0 Unchecked, 28.48ms Time], IncrementalHoareTripleChecker [86 Valid, 2315 Invalid, 0 Unknown, 2403 Unchecked, 10987.14ms Time] [2021-11-13 18:47:48,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4702 states. [2021-11-13 18:47:48,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4702 to 3207. [2021-11-13 18:47:48,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3207 states, 2525 states have (on average 1.704950495049505) internal successors, (4305), 3177 states have internal predecessors, (4305), 29 states have call successors, (29), 5 states have call predecessors, (29), 4 states have return successors, (28), 25 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-13 18:47:48,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3207 states to 3207 states and 4362 transitions. [2021-11-13 18:47:48,850 INFO L78 Accepts]: Start accepts. Automaton has 3207 states and 4362 transitions. Word has length 66 [2021-11-13 18:47:48,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:47:48,850 INFO L470 AbstractCegarLoop]: Abstraction has 3207 states and 4362 transitions. [2021-11-13 18:47:48,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:47:48,851 INFO L276 IsEmpty]: Start isEmpty. Operand 3207 states and 4362 transitions. [2021-11-13 18:47:48,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-13 18:47:48,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:47:48,852 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:47:48,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-13 18:47:49,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:47:49,071 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr393REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 18:47:49,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:47:49,072 INFO L85 PathProgramCache]: Analyzing trace with hash -578596953, now seen corresponding path program 1 times [2021-11-13 18:47:49,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:47:49,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451255499] [2021-11-13 18:47:49,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:47:49,072 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:47:49,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:47:49,073 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:47:49,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-13 18:47:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:49,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:47:49,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:47:49,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:47:49,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:47:49,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-13 18:47:50,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:47:50,136 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:47:50,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [451255499] [2021-11-13 18:47:50,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [451255499] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:47:50,136 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:47:50,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:47:50,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641940467] [2021-11-13 18:47:50,137 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:47:50,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:47:50,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:47:50,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:47:50,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:47:50,138 INFO L87 Difference]: Start difference. First operand 3207 states and 4362 transitions. Second operand has 6 states, 5 states have (on average 25.0) internal successors, (125), 6 states have internal predecessors, (125), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:47:53,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:47:53,824 INFO L93 Difference]: Finished difference Result 3208 states and 4355 transitions. [2021-11-13 18:47:53,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:47:53,825 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 25.0) internal successors, (125), 6 states have internal predecessors, (125), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2021-11-13 18:47:53,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:47:53,829 INFO L225 Difference]: With dead ends: 3208 [2021-11-13 18:47:53,830 INFO L226 Difference]: Without dead ends: 3208 [2021-11-13 18:47:53,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:47:53,831 INFO L933 BasicCegarLoop]: 1064 mSDtfsCounter, 6080 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3081.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6090 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.56ms SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3626.71ms IncrementalHoareTripleChecker+Time [2021-11-13 18:47:53,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6090 Valid, 1253 Invalid, 885 Unknown, 0 Unchecked, 13.56ms Time], IncrementalHoareTripleChecker [58 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 3626.71ms Time] [2021-11-13 18:47:53,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3208 states. [2021-11-13 18:47:53,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3208 to 3204. [2021-11-13 18:47:53,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3204 states, 2525 states have (on average 1.7021782178217821) internal successors, (4298), 3174 states have internal predecessors, (4298), 29 states have call successors, (29), 5 states have call predecessors, (29), 4 states have return successors, (28), 25 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-13 18:47:53,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3204 states to 3204 states and 4355 transitions. [2021-11-13 18:47:53,876 INFO L78 Accepts]: Start accepts. Automaton has 3204 states and 4355 transitions. Word has length 68 [2021-11-13 18:47:53,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:47:53,877 INFO L470 AbstractCegarLoop]: Abstraction has 3204 states and 4355 transitions. [2021-11-13 18:47:53,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 25.0) internal successors, (125), 6 states have internal predecessors, (125), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:47:53,878 INFO L276 IsEmpty]: Start isEmpty. Operand 3204 states and 4355 transitions. [2021-11-13 18:47:53,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-13 18:47:53,879 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:47:53,879 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:47:53,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-13 18:47:54,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:47:54,096 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr396REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 18:47:54,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:47:54,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1276874355, now seen corresponding path program 1 times [2021-11-13 18:47:54,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:47:54,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1725647136] [2021-11-13 18:47:54,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:47:54,098 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:47:54,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:47:54,099 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:47:54,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-13 18:47:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:54,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:47:54,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:47:54,665 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 [2021-11-13 18:47:54,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-13 18:47:54,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-13 18:47:54,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:47:54,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:47:54,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:47:54,898 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:47:54,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1725647136] [2021-11-13 18:47:54,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1725647136] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:47:54,898 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:47:54,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 18:47:54,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757084074] [2021-11-13 18:47:54,899 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:47:54,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:47:54,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:47:54,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:47:54,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:47:54,900 INFO L87 Difference]: Start difference. First operand 3204 states and 4355 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:48:00,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:48:00,639 INFO L93 Difference]: Finished difference Result 3203 states and 4352 transitions. [2021-11-13 18:48:00,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:48:00,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2021-11-13 18:48:00,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:48:00,644 INFO L225 Difference]: With dead ends: 3203 [2021-11-13 18:48:00,645 INFO L226 Difference]: Without dead ends: 3203 [2021-11-13 18:48:00,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:48:00,646 INFO L933 BasicCegarLoop]: 1728 mSDtfsCounter, 4 mSDsluCounter, 2889 mSDsCounter, 0 mSdLazyCounter, 2300 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4832.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4617 SdHoareTripleChecker+Invalid, 2301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.04ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5640.35ms IncrementalHoareTripleChecker+Time [2021-11-13 18:48:00,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 4617 Invalid, 2301 Unknown, 0 Unchecked, 15.04ms Time], IncrementalHoareTripleChecker [1 Valid, 2300 Invalid, 0 Unknown, 0 Unchecked, 5640.35ms Time] [2021-11-13 18:48:00,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3203 states. [2021-11-13 18:48:00,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3203 to 3203. [2021-11-13 18:48:00,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3203 states, 2525 states have (on average 1.700990099009901) internal successors, (4295), 3173 states have internal predecessors, (4295), 29 states have call successors, (29), 5 states have call predecessors, (29), 4 states have return successors, (28), 25 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-13 18:48:00,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3203 states to 3203 states and 4352 transitions. [2021-11-13 18:48:00,687 INFO L78 Accepts]: Start accepts. Automaton has 3203 states and 4352 transitions. Word has length 71 [2021-11-13 18:48:00,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:48:00,687 INFO L470 AbstractCegarLoop]: Abstraction has 3203 states and 4352 transitions. [2021-11-13 18:48:00,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:48:00,688 INFO L276 IsEmpty]: Start isEmpty. Operand 3203 states and 4352 transitions. [2021-11-13 18:48:00,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-13 18:48:00,689 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:48:00,689 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:48:00,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-11-13 18:48:00,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:48:00,910 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr397REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 18:48:00,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:48:00,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1276874354, now seen corresponding path program 1 times [2021-11-13 18:48:00,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:48:00,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2087379730] [2021-11-13 18:48:00,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:48:00,912 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:48:00,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:48:00,913 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:48:00,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-13 18:48:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:48:01,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:48:01,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:48:01,387 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 [2021-11-13 18:48:01,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-13 18:48:01,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-13 18:48:01,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-13 18:48:01,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-13 18:48:01,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:48:01,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:48:01,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:48:01,812 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:48:01,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2087379730] [2021-11-13 18:48:01,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2087379730] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:48:01,812 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:48:01,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-13 18:48:01,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105001433] [2021-11-13 18:48:01,813 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:48:01,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:48:01,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:48:01,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:48:01,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:48:01,815 INFO L87 Difference]: Start difference. First operand 3203 states and 4352 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:48:17,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:48:17,302 INFO L93 Difference]: Finished difference Result 3202 states and 4349 transitions. [2021-11-13 18:48:17,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:48:17,303 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2021-11-13 18:48:17,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:48:17,307 INFO L225 Difference]: With dead ends: 3202 [2021-11-13 18:48:17,307 INFO L226 Difference]: Without dead ends: 3202 [2021-11-13 18:48:17,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:48:17,308 INFO L933 BasicCegarLoop]: 1728 mSDtfsCounter, 2 mSDsluCounter, 4760 mSDsCounter, 0 mSdLazyCounter, 3882 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13782.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6488 SdHoareTripleChecker+Invalid, 3884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.34ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15354.70ms IncrementalHoareTripleChecker+Time [2021-11-13 18:48:17,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 6488 Invalid, 3884 Unknown, 0 Unchecked, 22.34ms Time], IncrementalHoareTripleChecker [2 Valid, 3882 Invalid, 0 Unknown, 0 Unchecked, 15354.70ms Time] [2021-11-13 18:48:17,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3202 states. [2021-11-13 18:48:17,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3202 to 3202. [2021-11-13 18:48:17,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3202 states, 2522 states have (on average 1.7018239492466296) internal successors, (4292), 3172 states have internal predecessors, (4292), 29 states have call successors, (29), 5 states have call predecessors, (29), 4 states have return successors, (28), 25 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-13 18:48:17,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3202 states to 3202 states and 4349 transitions. [2021-11-13 18:48:17,347 INFO L78 Accepts]: Start accepts. Automaton has 3202 states and 4349 transitions. Word has length 71 [2021-11-13 18:48:17,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:48:17,348 INFO L470 AbstractCegarLoop]: Abstraction has 3202 states and 4349 transitions. [2021-11-13 18:48:17,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:48:17,348 INFO L276 IsEmpty]: Start isEmpty. Operand 3202 states and 4349 transitions. [2021-11-13 18:48:17,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-13 18:48:17,348 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:48:17,348 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:48:17,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-13 18:48:17,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:48:17,549 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr78REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 18:48:17,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:48:17,550 INFO L85 PathProgramCache]: Analyzing trace with hash 536136993, now seen corresponding path program 1 times [2021-11-13 18:48:17,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:48:17,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14334575] [2021-11-13 18:48:17,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:48:17,550 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:48:17,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:48:17,551 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:48:17,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-13 18:48:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:48:17,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:48:17,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:48:17,962 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 [2021-11-13 18:48:17,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-13 18:48:18,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-13 18:48:18,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:48:18,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:48:18,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:48:18,161 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:48:18,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14334575] [2021-11-13 18:48:18,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [14334575] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:48:18,161 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:48:18,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 18:48:18,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348385198] [2021-11-13 18:48:18,162 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:48:18,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:48:18,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:48:18,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:48:18,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:48:18,162 INFO L87 Difference]: Start difference. First operand 3202 states and 4349 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:48:23,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:48:23,415 INFO L93 Difference]: Finished difference Result 3201 states and 4347 transitions. [2021-11-13 18:48:23,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:48:23,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2021-11-13 18:48:23,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:48:23,422 INFO L225 Difference]: With dead ends: 3201 [2021-11-13 18:48:23,422 INFO L226 Difference]: Without dead ends: 3201 [2021-11-13 18:48:23,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:48:23,423 INFO L933 BasicCegarLoop]: 1726 mSDtfsCounter, 4 mSDsluCounter, 2886 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4426.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4612 SdHoareTripleChecker+Invalid, 2298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.41ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5159.19ms IncrementalHoareTripleChecker+Time [2021-11-13 18:48:23,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 4612 Invalid, 2298 Unknown, 0 Unchecked, 14.41ms Time], IncrementalHoareTripleChecker [1 Valid, 2297 Invalid, 0 Unknown, 0 Unchecked, 5159.19ms Time] [2021-11-13 18:48:23,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3201 states. [2021-11-13 18:48:23,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3201 to 3201. [2021-11-13 18:48:23,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3201 states, 2522 states have (on average 1.7010309278350515) internal successors, (4290), 3171 states have internal predecessors, (4290), 29 states have call successors, (29), 5 states have call predecessors, (29), 4 states have return successors, (28), 25 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-13 18:48:23,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3201 states to 3201 states and 4347 transitions. [2021-11-13 18:48:23,474 INFO L78 Accepts]: Start accepts. Automaton has 3201 states and 4347 transitions. Word has length 71 [2021-11-13 18:48:23,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:48:23,475 INFO L470 AbstractCegarLoop]: Abstraction has 3201 states and 4347 transitions. [2021-11-13 18:48:23,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:48:23,475 INFO L276 IsEmpty]: Start isEmpty. Operand 3201 states and 4347 transitions. [2021-11-13 18:48:23,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-13 18:48:23,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:48:23,476 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:48:23,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-13 18:48:23,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:48:23,692 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr79REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 18:48:23,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:48:23,692 INFO L85 PathProgramCache]: Analyzing trace with hash 536136994, now seen corresponding path program 1 times [2021-11-13 18:48:23,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:48:23,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800058829] [2021-11-13 18:48:23,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:48:23,693 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:48:23,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:48:23,695 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:48:23,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-13 18:48:23,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:48:23,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:48:23,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:48:24,075 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 [2021-11-13 18:48:24,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-13 18:48:24,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-13 18:48:24,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-13 18:48:24,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-13 18:48:24,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:48:24,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:48:24,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:48:24,442 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:48:24,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [800058829] [2021-11-13 18:48:24,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [800058829] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:48:24,442 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:48:24,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-13 18:48:24,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807175559] [2021-11-13 18:48:24,443 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:48:24,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:48:24,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:48:24,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:48:24,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:48:24,444 INFO L87 Difference]: Start difference. First operand 3201 states and 4347 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:48:38,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:48:38,589 INFO L93 Difference]: Finished difference Result 3200 states and 4345 transitions. [2021-11-13 18:48:38,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:48:38,590 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2021-11-13 18:48:38,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:48:38,594 INFO L225 Difference]: With dead ends: 3200 [2021-11-13 18:48:38,595 INFO L226 Difference]: Without dead ends: 3200 [2021-11-13 18:48:38,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:48:38,595 INFO L933 BasicCegarLoop]: 1726 mSDtfsCounter, 4 mSDsluCounter, 2855 mSDsCounter, 0 mSdLazyCounter, 2326 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12655.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4581 SdHoareTripleChecker+Invalid, 2328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.97ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14025.75ms IncrementalHoareTripleChecker+Time [2021-11-13 18:48:38,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 4581 Invalid, 2328 Unknown, 0 Unchecked, 16.97ms Time], IncrementalHoareTripleChecker [2 Valid, 2326 Invalid, 0 Unknown, 0 Unchecked, 14025.75ms Time] [2021-11-13 18:48:38,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3200 states. [2021-11-13 18:48:38,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3200 to 3200. [2021-11-13 18:48:38,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3200 states, 2520 states have (on average 1.7015873015873015) internal successors, (4288), 3170 states have internal predecessors, (4288), 29 states have call successors, (29), 5 states have call predecessors, (29), 4 states have return successors, (28), 25 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-13 18:48:38,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 4345 transitions. [2021-11-13 18:48:38,632 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 4345 transitions. Word has length 71 [2021-11-13 18:48:38,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:48:38,633 INFO L470 AbstractCegarLoop]: Abstraction has 3200 states and 4345 transitions. [2021-11-13 18:48:38,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:48:38,633 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 4345 transitions. [2021-11-13 18:48:38,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-13 18:48:38,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:48:38,634 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:48:38,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-13 18:48:38,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:48:38,842 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr400REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 18:48:38,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:48:38,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1561418388, now seen corresponding path program 1 times [2021-11-13 18:48:38,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:48:38,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032804035] [2021-11-13 18:48:38,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:48:38,844 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:48:38,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:48:38,845 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:48:38,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-13 18:48:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:48:39,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:48:39,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:48:39,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:48:39,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:48:39,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:48:39,433 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:48:39,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032804035] [2021-11-13 18:48:39,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1032804035] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:48:39,434 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:48:39,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 18:48:39,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069270124] [2021-11-13 18:48:39,434 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:48:39,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:48:39,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:48:39,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:48:39,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:48:39,435 INFO L87 Difference]: Start difference. First operand 3200 states and 4345 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:48:39,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:48:39,590 INFO L93 Difference]: Finished difference Result 3210 states and 4361 transitions. [2021-11-13 18:48:39,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:48:39,596 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 79 [2021-11-13 18:48:39,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:48:39,604 INFO L225 Difference]: With dead ends: 3210 [2021-11-13 18:48:39,604 INFO L226 Difference]: Without dead ends: 3210 [2021-11-13 18:48:39,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:48:39,605 INFO L933 BasicCegarLoop]: 1724 mSDtfsCounter, 9 mSDsluCounter, 5153 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 6877 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.29ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 112.24ms IncrementalHoareTripleChecker+Time [2021-11-13 18:48:39,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 6877 Invalid, 58 Unknown, 0 Unchecked, 4.29ms Time], IncrementalHoareTripleChecker [10 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 112.24ms Time] [2021-11-13 18:48:39,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3210 states. [2021-11-13 18:48:39,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3210 to 3210. [2021-11-13 18:48:39,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3210 states, 2528 states have (on average 1.7009493670886076) internal successors, (4300), 3179 states have internal predecessors, (4300), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (32), 25 states have call predecessors, (32), 28 states have call successors, (32) [2021-11-13 18:48:39,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3210 states to 3210 states and 4361 transitions. [2021-11-13 18:48:39,657 INFO L78 Accepts]: Start accepts. Automaton has 3210 states and 4361 transitions. Word has length 79 [2021-11-13 18:48:39,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:48:39,658 INFO L470 AbstractCegarLoop]: Abstraction has 3210 states and 4361 transitions. [2021-11-13 18:48:39,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:48:39,658 INFO L276 IsEmpty]: Start isEmpty. Operand 3210 states and 4361 transitions. [2021-11-13 18:48:39,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-13 18:48:39,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:48:39,659 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:48:39,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-13 18:48:39,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:48:39,861 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr400REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 18:48:39,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:48:39,862 INFO L85 PathProgramCache]: Analyzing trace with hash -517599724, now seen corresponding path program 1 times [2021-11-13 18:48:39,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:48:39,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [288077369] [2021-11-13 18:48:39,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:48:39,862 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:48:39,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:48:39,867 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:48:39,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-13 18:48:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:48:40,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:48:40,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:48:40,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:48:40,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:48:40,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:48:40,603 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:48:40,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [288077369] [2021-11-13 18:48:40,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [288077369] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:48:40,603 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:48:40,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-13 18:48:40,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018819347] [2021-11-13 18:48:40,604 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:48:40,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 18:48:40,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:48:40,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 18:48:40,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:48:40,605 INFO L87 Difference]: Start difference. First operand 3210 states and 4361 transitions. Second operand has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:48:41,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:48:41,096 INFO L93 Difference]: Finished difference Result 3224 states and 4385 transitions. [2021-11-13 18:48:41,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 18:48:41,097 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 81 [2021-11-13 18:48:41,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:48:41,106 INFO L225 Difference]: With dead ends: 3224 [2021-11-13 18:48:41,107 INFO L226 Difference]: Without dead ends: 3220 [2021-11-13 18:48:41,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-13 18:48:41,108 INFO L933 BasicCegarLoop]: 1726 mSDtfsCounter, 24 mSDsluCounter, 6883 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 230.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 8609 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.02ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 264.29ms IncrementalHoareTripleChecker+Time [2021-11-13 18:48:41,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 8609 Invalid, 141 Unknown, 0 Unchecked, 6.02ms Time], IncrementalHoareTripleChecker [27 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 264.29ms Time] [2021-11-13 18:48:41,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2021-11-13 18:48:41,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3216. [2021-11-13 18:48:41,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3216 states, 2534 states have (on average 1.7000789265982637) internal successors, (4308), 3185 states have internal predecessors, (4308), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (32), 25 states have call predecessors, (32), 28 states have call successors, (32) [2021-11-13 18:48:41,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3216 states to 3216 states and 4369 transitions. [2021-11-13 18:48:41,156 INFO L78 Accepts]: Start accepts. Automaton has 3216 states and 4369 transitions. Word has length 81 [2021-11-13 18:48:41,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:48:41,156 INFO L470 AbstractCegarLoop]: Abstraction has 3216 states and 4369 transitions. [2021-11-13 18:48:41,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:48:41,157 INFO L276 IsEmpty]: Start isEmpty. Operand 3216 states and 4369 transitions. [2021-11-13 18:48:41,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-13 18:48:41,158 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:48:41,158 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:48:41,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-13 18:48:41,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:48:41,371 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr400REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 986 more)] === [2021-11-13 18:48:41,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:48:41,372 INFO L85 PathProgramCache]: Analyzing trace with hash -294988524, now seen corresponding path program 2 times [2021-11-13 18:48:41,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:48:41,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2138167808] [2021-11-13 18:48:41,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:48:41,372 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:48:41,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:48:41,373 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:48:41,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed18bef5-0617-4bdf-bf19-9e995fd890ca/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-13 18:48:41,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 18:48:41,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:48:41,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:48:41,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:48:41,814 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 [2021-11-13 18:48:41,829 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:48:41,829 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:48:41,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:48:41,889 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-13 18:48:41,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-13 18:48:41,978 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 18:48:41,979 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 [2021-11-13 18:48:42,226 INFO L354 Elim1Store]: treesize reduction 229, result has 11.2 percent of original size [2021-11-13 18:48:42,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 66 treesize of output 86 [2021-11-13 18:48:47,668 INFO L354 Elim1Store]: treesize reduction 1963, result has 5.1 percent of original size [2021-11-13 18:48:47,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 39 case distinctions, treesize of input 118 treesize of output 150 [2021-11-13 18:48:57,530 INFO L354 Elim1Store]: treesize reduction 876, result has 0.1 percent of original size [2021-11-13 18:48:57,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 157 treesize of output 67 [2021-11-13 18:48:57,701 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-13 18:48:57,701 INFO L328 TraceCheckSpWp]: Computing backward predicates...