./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU --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 cb182062e759f3e947e2f86847df2222bda90081d4cc013a50b9baa2d9844063 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 23:15:01,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 23:15:01,171 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 23:15:01,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 23:15:01,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 23:15:01,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 23:15:01,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 23:15:01,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 23:15:01,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 23:15:01,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 23:15:01,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 23:15:01,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 23:15:01,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 23:15:01,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 23:15:01,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 23:15:01,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 23:15:01,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 23:15:01,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 23:15:01,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 23:15:01,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 23:15:01,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 23:15:01,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 23:15:01,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 23:15:01,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 23:15:01,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 23:15:01,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 23:15:01,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 23:15:01,328 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 23:15:01,329 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 23:15:01,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 23:15:01,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 23:15:01,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 23:15:01,335 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 23:15:01,337 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 23:15:01,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 23:15:01,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 23:15:01,341 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 23:15:01,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 23:15:01,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 23:15:01,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 23:15:01,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 23:15:01,345 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-02 23:15:01,403 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 23:15:01,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 23:15:01,404 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 23:15:01,405 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 23:15:01,415 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 23:15:01,415 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 23:15:01,416 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 23:15:01,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 23:15:01,416 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 23:15:01,417 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 23:15:01,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 23:15:01,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 23:15:01,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 23:15:01,419 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-02 23:15:01,419 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-02 23:15:01,420 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-02 23:15:01,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 23:15:01,420 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-02 23:15:01,421 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 23:15:01,421 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 23:15:01,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 23:15:01,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 23:15:01,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 23:15:01,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:15:01,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 23:15:01,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 23:15:01,423 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 23:15:01,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 23:15:01,424 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 23:15:01,424 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_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb182062e759f3e947e2f86847df2222bda90081d4cc013a50b9baa2d9844063 [2021-11-02 23:15:01,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 23:15:01,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 23:15:01,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 23:15:01,806 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 23:15:01,808 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 23:15:01,809 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i [2021-11-02 23:15:01,913 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/data/8be68ca8f/cdca0836f5434079ae284d8439c7ec7a/FLAG49a01ae40 [2021-11-02 23:15:02,700 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 23:15:02,701 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i [2021-11-02 23:15:02,727 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/data/8be68ca8f/cdca0836f5434079ae284d8439c7ec7a/FLAG49a01ae40 [2021-11-02 23:15:02,896 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/data/8be68ca8f/cdca0836f5434079ae284d8439c7ec7a [2021-11-02 23:15:02,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 23:15:02,908 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-02 23:15:02,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 23:15:02,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 23:15:02,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 23:15:02,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:15:02" (1/1) ... [2021-11-02 23:15:02,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fe71328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:15:02, skipping insertion in model container [2021-11-02 23:15:02,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:15:02" (1/1) ... [2021-11-02 23:15:02,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 23:15:03,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 23:15:03,671 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_ac24420f-376f-4358-85dd-ca337bbba9e9/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i[33021,33034] [2021-11-02 23:15:03,871 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_ac24420f-376f-4358-85dd-ca337bbba9e9/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i[49681,49694] [2021-11-02 23:15:03,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:15:03,928 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) [2021-11-02 23:15:03,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5c76d7f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:15:03, skipping insertion in model container [2021-11-02 23:15:03,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 23:15:03,930 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-02 23:15:03,932 INFO L168 Benchmark]: Toolchain (without parser) took 1023.19 ms. Allocated memory is still 102.8 MB. Free memory was 66.2 MB in the beginning and 64.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-02 23:15:03,933 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 102.8 MB. Free memory is still 55.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 23:15:03,934 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1016.32 ms. Allocated memory is still 102.8 MB. Free memory was 66.0 MB in the beginning and 64.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-02 23:15:03,936 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 102.8 MB. Free memory is still 55.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1016.32 ms. Allocated memory is still 102.8 MB. Free memory was 66.0 MB in the beginning and 64.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: 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_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU --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 cb182062e759f3e947e2f86847df2222bda90081d4cc013a50b9baa2d9844063 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 23:15:06,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 23:15:06,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 23:15:06,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 23:15:06,703 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 23:15:06,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 23:15:06,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 23:15:06,710 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 23:15:06,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 23:15:06,715 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 23:15:06,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 23:15:06,718 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 23:15:06,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 23:15:06,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 23:15:06,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 23:15:06,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 23:15:06,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 23:15:06,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 23:15:06,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 23:15:06,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 23:15:06,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 23:15:06,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 23:15:06,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 23:15:06,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 23:15:06,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 23:15:06,747 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 23:15:06,748 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 23:15:06,749 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 23:15:06,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 23:15:06,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 23:15:06,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 23:15:06,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 23:15:06,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 23:15:06,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 23:15:06,758 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 23:15:06,758 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 23:15:06,759 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 23:15:06,760 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 23:15:06,760 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 23:15:06,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 23:15:06,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 23:15:06,764 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-02 23:15:06,796 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 23:15:06,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 23:15:06,797 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 23:15:06,797 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 23:15:06,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 23:15:06,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 23:15:06,799 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 23:15:06,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 23:15:06,800 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 23:15:06,800 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 23:15:06,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 23:15:06,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 23:15:06,801 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 23:15:06,802 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-02 23:15:06,802 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-02 23:15:06,802 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-02 23:15:06,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 23:15:06,803 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-02 23:15:06,804 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-02 23:15:06,804 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-02 23:15:06,804 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 23:15:06,805 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 23:15:06,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 23:15:06,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 23:15:06,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 23:15:06,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:15:06,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 23:15:06,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 23:15:06,807 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-02 23:15:06,808 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-02 23:15:06,808 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 23:15:06,808 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-02 23:15:06,809 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_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb182062e759f3e947e2f86847df2222bda90081d4cc013a50b9baa2d9844063 [2021-11-02 23:15:07,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 23:15:07,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 23:15:07,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 23:15:07,247 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 23:15:07,248 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 23:15:07,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i [2021-11-02 23:15:07,341 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/data/7702531df/06e61b7db25e43a093a7439d8b621c47/FLAG70c20e1e9 [2021-11-02 23:15:08,243 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 23:15:08,244 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i [2021-11-02 23:15:08,288 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/data/7702531df/06e61b7db25e43a093a7439d8b621c47/FLAG70c20e1e9 [2021-11-02 23:15:08,394 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/data/7702531df/06e61b7db25e43a093a7439d8b621c47 [2021-11-02 23:15:08,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 23:15:08,399 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-02 23:15:08,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 23:15:08,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 23:15:08,406 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 23:15:08,407 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:15:08" (1/1) ... [2021-11-02 23:15:08,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d9e90b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:15:08, skipping insertion in model container [2021-11-02 23:15:08,408 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:15:08" (1/1) ... [2021-11-02 23:15:08,418 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 23:15:08,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 23:15:09,037 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_ac24420f-376f-4358-85dd-ca337bbba9e9/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i[33021,33034] [2021-11-02 23:15:09,250 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_ac24420f-376f-4358-85dd-ca337bbba9e9/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i[49681,49694] [2021-11-02 23:15:09,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:15:09,328 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-02 23:15:09,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 23:15:09,410 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_ac24420f-376f-4358-85dd-ca337bbba9e9/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i[33021,33034] [2021-11-02 23:15:09,604 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_ac24420f-376f-4358-85dd-ca337bbba9e9/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i[49681,49694] [2021-11-02 23:15:09,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:15:09,658 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 23:15:09,713 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_ac24420f-376f-4358-85dd-ca337bbba9e9/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i[33021,33034] [2021-11-02 23:15:09,858 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_ac24420f-376f-4358-85dd-ca337bbba9e9/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i[49681,49694] [2021-11-02 23:15:09,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:15:09,938 INFO L208 MainTranslator]: Completed translation [2021-11-02 23:15:09,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:15:09 WrapperNode [2021-11-02 23:15:09,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 23:15:09,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 23:15:09,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 23:15:09,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 23:15:09,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:15:09" (1/1) ... [2021-11-02 23:15:09,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:15:09" (1/1) ... [2021-11-02 23:15:10,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:15:09" (1/1) ... [2021-11-02 23:15:10,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:15:09" (1/1) ... [2021-11-02 23:15:10,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:15:09" (1/1) ... [2021-11-02 23:15:10,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:15:09" (1/1) ... [2021-11-02 23:15:10,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:15:09" (1/1) ... [2021-11-02 23:15:10,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 23:15:10,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 23:15:10,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 23:15:10,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 23:15:10,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:15:09" (1/1) ... [2021-11-02 23:15:10,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:15:10,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:15:10,317 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 23:15:10,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 23:15:10,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-02 23:15:10,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 23:15:10,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-02 23:15:10,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-02 23:15:10,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-02 23:15:10,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-02 23:15:10,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-02 23:15:10,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-02 23:15:10,380 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-02 23:15:10,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-02 23:15:10,380 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-02 23:15:10,380 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-02 23:15:10,381 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-02 23:15:10,381 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-02 23:15:10,381 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-02 23:15:10,381 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-02 23:15:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-02 23:15:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-02 23:15:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-02 23:15:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-02 23:15:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-02 23:15:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-02 23:15:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-02 23:15:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-02 23:15:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-02 23:15:10,384 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-02 23:15:10,384 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-02 23:15:10,384 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-02 23:15:10,384 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-02 23:15:10,384 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-02 23:15:10,385 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-02 23:15:10,385 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-02 23:15:10,385 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-02 23:15:10,385 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-02 23:15:10,387 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-02 23:15:10,387 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-02 23:15:10,387 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-02 23:15:10,387 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-02 23:15:10,387 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-02 23:15:10,388 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-02 23:15:10,389 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-02 23:15:10,389 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-02 23:15:10,389 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-02 23:15:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-02 23:15:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-02 23:15:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-02 23:15:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-02 23:15:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-02 23:15:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-02 23:15:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-02 23:15:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-02 23:15:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-02 23:15:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-02 23:15:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-02 23:15:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-02 23:15:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-02 23:15:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-02 23:15:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-02 23:15:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-02 23:15:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-02 23:15:10,397 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-02 23:15:10,397 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-02 23:15:10,397 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-02 23:15:10,398 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-02 23:15:10,398 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-02 23:15:10,398 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-02 23:15:10,399 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-02 23:15:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-02 23:15:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-02 23:15:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-02 23:15:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-02 23:15:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-02 23:15:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-02 23:15:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-02 23:15:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-02 23:15:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-02 23:15:10,402 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-02 23:15:10,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-02 23:15:10,403 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-02 23:15:10,403 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-02 23:15:10,404 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-02 23:15:10,404 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-02 23:15:10,404 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-02 23:15:10,404 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-02 23:15:10,404 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-02 23:15:10,405 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-02 23:15:10,405 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-02 23:15:10,405 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-02 23:15:10,405 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-02 23:15:10,406 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-02 23:15:10,406 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-02 23:15:10,406 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-02 23:15:10,406 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-02 23:15:10,407 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-02 23:15:10,407 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-02 23:15:10,407 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-02 23:15:10,407 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-02 23:15:10,408 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-02 23:15:10,408 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-02 23:15:10,408 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-02 23:15:10,408 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-02 23:15:10,409 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-02 23:15:10,409 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-02 23:15:10,409 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-02 23:15:10,409 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-02 23:15:10,409 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-02 23:15:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-02 23:15:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-02 23:15:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-02 23:15:10,411 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-02 23:15:10,411 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-02 23:15:10,411 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-02 23:15:10,411 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-02 23:15:10,412 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-02 23:15:10,412 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-02 23:15:10,412 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-02 23:15:10,413 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-02 23:15:10,414 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-02 23:15:10,418 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-02 23:15:10,419 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-02 23:15:10,419 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-02 23:15:10,419 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-02 23:15:10,419 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-02 23:15:10,420 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-02 23:15:10,420 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-02 23:15:10,421 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-02 23:15:10,421 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-02 23:15:10,427 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-02 23:15:10,428 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-02 23:15:10,428 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-02 23:15:10,428 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-02 23:15:10,428 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-02 23:15:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-02 23:15:10,430 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-02 23:15:10,430 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-02 23:15:10,430 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-02 23:15:10,430 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-02 23:15:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-02 23:15:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-02 23:15:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-02 23:15:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-02 23:15:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-02 23:15:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-02 23:15:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-02 23:15:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-02 23:15:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-02 23:15:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-02 23:15:10,433 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-02 23:15:10,433 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-02 23:15:10,433 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-02 23:15:10,433 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-02 23:15:10,433 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-02 23:15:10,434 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-02 23:15:10,434 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-02 23:15:10,434 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-02 23:15:10,434 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-02 23:15:10,434 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-02 23:15:10,435 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-02 23:15:10,435 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-02 23:15:10,435 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-02 23:15:10,435 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-02 23:15:10,435 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-02 23:15:10,436 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-02 23:15:10,436 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-02 23:15:10,436 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-02 23:15:10,436 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-02 23:15:10,436 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-02 23:15:10,436 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-02 23:15:10,437 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-02 23:15:10,437 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-02 23:15:10,437 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-02 23:15:10,437 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-02 23:15:10,437 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-02 23:15:10,438 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-02 23:15:10,438 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-02 23:15:10,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 23:15:10,438 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-02 23:15:10,438 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-02 23:15:10,439 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-02 23:15:10,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 23:15:10,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-02 23:15:10,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-02 23:15:10,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 23:15:10,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 23:15:10,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-02 23:15:10,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 23:15:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-02 23:15:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-02 23:15:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-02 23:15:10,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 23:15:10,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-02 23:15:10,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-02 23:15:11,328 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-02 23:15:20,864 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 23:15:20,865 INFO L299 CfgBuilder]: Removed 100 assume(true) statements. [2021-11-02 23:15:20,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:15:20 BoogieIcfgContainer [2021-11-02 23:15:20,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 23:15:20,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 23:15:20,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 23:15:20,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 23:15:20,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:15:08" (1/3) ... [2021-11-02 23:15:20,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f851f24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:15:20, skipping insertion in model container [2021-11-02 23:15:20,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:15:09" (2/3) ... [2021-11-02 23:15:20,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f851f24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:15:20, skipping insertion in model container [2021-11-02 23:15:20,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:15:20" (3/3) ... [2021-11-02 23:15:20,905 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test5-3.i [2021-11-02 23:15:20,912 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 23:15:20,913 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 932 error locations. [2021-11-02 23:15:20,985 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 23:15:20,995 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 [2021-11-02 23:15:20,995 INFO L340 AbstractCegarLoop]: Starting to check reachability of 932 error locations. [2021-11-02 23:15:21,085 INFO L276 IsEmpty]: Start isEmpty. Operand has 1841 states, 895 states have (on average 2.2614525139664803) internal successors, (2024), 1826 states have internal predecessors, (2024), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 10 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-02 23:15:21,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-02 23:15:21,097 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:15:21,098 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:15:21,098 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-02 23:15:21,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:15:21,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1371675552, now seen corresponding path program 1 times [2021-11-02 23:15:21,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:15:21,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [837922699] [2021-11-02 23:15:21,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:15:21,124 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:15:21,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:15:21,129 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:15:21,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-02 23:15:21,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:15:21,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-02 23:15:21,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:15:21,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:15:21,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:15:21,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:15:21,546 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:15:21,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [837922699] [2021-11-02 23:15:21,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [837922699] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:15:21,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:15:21,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-02 23:15:21,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132270853] [2021-11-02 23:15:21,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 23:15:21,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:15:21,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 23:15:21,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 23:15:21,577 INFO L87 Difference]: Start difference. First operand has 1841 states, 895 states have (on average 2.2614525139664803) internal successors, (2024), 1826 states have internal predecessors, (2024), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 10 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-11-02 23:15:21,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:15:21,757 INFO L93 Difference]: Finished difference Result 1823 states and 1925 transitions. [2021-11-02 23:15:21,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 23:15:21,759 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 9 [2021-11-02 23:15:21,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:15:21,801 INFO L225 Difference]: With dead ends: 1823 [2021-11-02 23:15:21,801 INFO L226 Difference]: Without dead ends: 1820 [2021-11-02 23:15:21,803 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 23:15:21,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2021-11-02 23:15:21,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 1820. [2021-11-02 23:15:21,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1820 states, 886 states have (on average 2.13882618510158) internal successors, (1895), 1806 states have internal predecessors, (1895), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-02 23:15:21,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 1922 transitions. [2021-11-02 23:15:21,969 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 1922 transitions. Word has length 9 [2021-11-02 23:15:21,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:15:21,971 INFO L470 AbstractCegarLoop]: Abstraction has 1820 states and 1922 transitions. [2021-11-02 23:15:21,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-11-02 23:15:21,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 1922 transitions. [2021-11-02 23:15:21,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-02 23:15:21,972 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:15:21,972 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:15:22,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-02 23:15:22,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:15:22,198 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-02 23:15:22,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:15:22,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1371675490, now seen corresponding path program 1 times [2021-11-02 23:15:22,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:15:22,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634013579] [2021-11-02 23:15:22,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:15:22,200 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:15:22,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:15:22,201 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:15:22,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-02 23:15:22,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:15:22,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 23:15:22,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:15:22,656 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 [2021-11-02 23:15:22,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:15:22,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:15:22,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:15:22,707 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:15:22,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634013579] [2021-11-02 23:15:22,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [634013579] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:15:22,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:15:22,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-02 23:15:22,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921967345] [2021-11-02 23:15:22,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:15:22,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:15:22,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:15:22,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:15:22,714 INFO L87 Difference]: Start difference. First operand 1820 states and 1922 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2021-11-02 23:15:26,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:15:26,753 INFO L93 Difference]: Finished difference Result 2065 states and 2201 transitions. [2021-11-02 23:15:26,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:15:26,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 9 [2021-11-02 23:15:26,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:15:26,769 INFO L225 Difference]: With dead ends: 2065 [2021-11-02 23:15:26,769 INFO L226 Difference]: Without dead ends: 2065 [2021-11-02 23:15:26,770 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:15:26,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2065 states. [2021-11-02 23:15:26,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2065 to 1805. [2021-11-02 23:15:26,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1805 states, 962 states have (on average 2.0155925155925156) internal successors, (1939), 1791 states have internal predecessors, (1939), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-02 23:15:26,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 1966 transitions. [2021-11-02 23:15:26,828 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 1966 transitions. Word has length 9 [2021-11-02 23:15:26,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:15:26,828 INFO L470 AbstractCegarLoop]: Abstraction has 1805 states and 1966 transitions. [2021-11-02 23:15:26,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2021-11-02 23:15:26,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 1966 transitions. [2021-11-02 23:15:26,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-02 23:15:26,830 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:15:26,830 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:15:26,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-02 23:15:27,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:15:27,045 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-02 23:15:27,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:15:27,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1371675489, now seen corresponding path program 1 times [2021-11-02 23:15:27,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:15:27,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990011653] [2021-11-02 23:15:27,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:15:27,048 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:15:27,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:15:27,050 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:15:27,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-02 23:15:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:15:27,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 23:15:27,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:15:27,313 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 [2021-11-02 23:15:27,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:15:27,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:15:27,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:15:27,491 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:15:27,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [990011653] [2021-11-02 23:15:27,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [990011653] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:15:27,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:15:27,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-02 23:15:27,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618144254] [2021-11-02 23:15:27,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:15:27,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:15:27,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:15:27,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:15:27,508 INFO L87 Difference]: Start difference. First operand 1805 states and 1966 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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) [2021-11-02 23:15:35,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:15:35,446 INFO L93 Difference]: Finished difference Result 2365 states and 2568 transitions. [2021-11-02 23:15:35,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 23:15:35,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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 9 [2021-11-02 23:15:35,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:15:35,463 INFO L225 Difference]: With dead ends: 2365 [2021-11-02 23:15:35,463 INFO L226 Difference]: Without dead ends: 2365 [2021-11-02 23:15:35,463 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:15:35,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2021-11-02 23:15:35,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 1961. [2021-11-02 23:15:35,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1961 states, 1128 states have (on average 1.9902482269503545) internal successors, (2245), 1947 states have internal predecessors, (2245), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-02 23:15:35,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 2272 transitions. [2021-11-02 23:15:35,563 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 2272 transitions. Word has length 9 [2021-11-02 23:15:35,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:15:35,563 INFO L470 AbstractCegarLoop]: Abstraction has 1961 states and 2272 transitions. [2021-11-02 23:15:35,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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) [2021-11-02 23:15:35,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 2272 transitions. [2021-11-02 23:15:35,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-02 23:15:35,564 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:15:35,565 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:15:35,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-02 23:15:35,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:15:35,765 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr640REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-02 23:15:35,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:15:35,766 INFO L85 PathProgramCache]: Analyzing trace with hash 429420143, now seen corresponding path program 1 times [2021-11-02 23:15:35,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:15:35,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519519643] [2021-11-02 23:15:35,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:15:35,767 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:15:35,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:15:35,768 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:15:35,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-02 23:15:35,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:15:35,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 23:15:35,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:15:35,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:15:35,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:15:36,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:15:36,032 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:15:36,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1519519643] [2021-11-02 23:15:36,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1519519643] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:15:36,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:15:36,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-02 23:15:36,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165618234] [2021-11-02 23:15:36,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:15:36,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:15:36,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:15:36,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:15:36,035 INFO L87 Difference]: Start difference. First operand 1961 states and 2272 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2021-11-02 23:15:36,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:15:36,282 INFO L93 Difference]: Finished difference Result 3512 states and 4106 transitions. [2021-11-02 23:15:36,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 23:15:36,283 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 10 [2021-11-02 23:15:36,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:15:36,306 INFO L225 Difference]: With dead ends: 3512 [2021-11-02 23:15:36,306 INFO L226 Difference]: Without dead ends: 3512 [2021-11-02 23:15:36,307 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:15:36,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3512 states. [2021-11-02 23:15:36,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3512 to 2895. [2021-11-02 23:15:36,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2895 states, 2061 states have (on average 1.9718583212032994) internal successors, (4064), 2874 states have internal predecessors, (4064), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-02 23:15:36,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2895 states to 2895 states and 4105 transitions. [2021-11-02 23:15:36,413 INFO L78 Accepts]: Start accepts. Automaton has 2895 states and 4105 transitions. Word has length 10 [2021-11-02 23:15:36,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:15:36,414 INFO L470 AbstractCegarLoop]: Abstraction has 2895 states and 4105 transitions. [2021-11-02 23:15:36,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-11-02 23:15:36,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2895 states and 4105 transitions. [2021-11-02 23:15:36,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-02 23:15:36,415 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:15:36,415 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:15:36,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-02 23:15:36,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:15:36,630 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr4REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-02 23:15:36,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:15:36,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1992388696, now seen corresponding path program 1 times [2021-11-02 23:15:36,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:15:36,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476753035] [2021-11-02 23:15:36,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:15:36,632 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:15:36,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:15:36,633 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:15:36,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-02 23:15:36,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:15:36,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 23:15:36,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:15:36,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:15:36,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:15:36,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:15:36,996 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:15:36,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [476753035] [2021-11-02 23:15:36,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [476753035] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:15:36,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:15:36,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-02 23:15:36,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797851232] [2021-11-02 23:15:36,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:15:36,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:15:36,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:15:36,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:15:36,999 INFO L87 Difference]: Start difference. First operand 2895 states and 4105 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) [2021-11-02 23:15:37,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:15:37,104 INFO L93 Difference]: Finished difference Result 2835 states and 4019 transitions. [2021-11-02 23:15:37,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:15:37,105 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 [2021-11-02 23:15:37,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:15:37,126 INFO L225 Difference]: With dead ends: 2835 [2021-11-02 23:15:37,126 INFO L226 Difference]: Without dead ends: 2835 [2021-11-02 23:15:37,127 INFO L786 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 [2021-11-02 23:15:37,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2021-11-02 23:15:37,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 2835. [2021-11-02 23:15:37,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2835 states, 2025 states have (on average 1.9644444444444444) internal successors, (3978), 2814 states have internal predecessors, (3978), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-02 23:15:37,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 4019 transitions. [2021-11-02 23:15:37,212 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 4019 transitions. Word has length 15 [2021-11-02 23:15:37,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:15:37,215 INFO L470 AbstractCegarLoop]: Abstraction has 2835 states and 4019 transitions. [2021-11-02 23:15:37,217 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) [2021-11-02 23:15:37,217 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 4019 transitions. [2021-11-02 23:15:37,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-02 23:15:37,218 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:15:37,219 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:15:37,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-02 23:15:37,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:15:37,436 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr29REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-02 23:15:37,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:15:37,437 INFO L85 PathProgramCache]: Analyzing trace with hash 869875523, now seen corresponding path program 1 times [2021-11-02 23:15:37,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:15:37,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2063768341] [2021-11-02 23:15:37,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:15:37,438 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:15:37,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:15:37,439 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:15:37,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-02 23:15:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:15:37,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 23:15:37,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:15:37,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:15:37,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:15:37,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:15:37,762 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:15:37,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2063768341] [2021-11-02 23:15:37,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2063768341] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:15:37,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:15:37,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-02 23:15:37,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047713034] [2021-11-02 23:15:37,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 23:15:37,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:15:37,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 23:15:37,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:15:37,764 INFO L87 Difference]: Start difference. First operand 2835 states and 4019 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) [2021-11-02 23:15:37,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:15:37,892 INFO L93 Difference]: Finished difference Result 2807 states and 3963 transitions. [2021-11-02 23:15:37,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 23:15:37,893 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 [2021-11-02 23:15:37,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:15:37,910 INFO L225 Difference]: With dead ends: 2807 [2021-11-02 23:15:37,911 INFO L226 Difference]: Without dead ends: 2807 [2021-11-02 23:15:37,911 INFO L786 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 [2021-11-02 23:15:37,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2807 states. [2021-11-02 23:15:37,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2807 to 2805. [2021-11-02 23:15:37,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2805 states, 2009 states have (on average 1.951219512195122) internal successors, (3920), 2784 states have internal predecessors, (3920), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-02 23:15:38,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 3961 transitions. [2021-11-02 23:15:38,000 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 3961 transitions. Word has length 17 [2021-11-02 23:15:38,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:15:38,001 INFO L470 AbstractCegarLoop]: Abstraction has 2805 states and 3961 transitions. [2021-11-02 23:15:38,002 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) [2021-11-02 23:15:38,002 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 3961 transitions. [2021-11-02 23:15:38,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 23:15:38,004 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:15:38,004 INFO L513 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] [2021-11-02 23:15:38,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-02 23:15:38,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:15:38,217 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr42REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-02 23:15:38,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:15:38,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1247292016, now seen corresponding path program 1 times [2021-11-02 23:15:38,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:15:38,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [739414800] [2021-11-02 23:15:38,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:15:38,219 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:15:38,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:15:38,220 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:15:38,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-02 23:15:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:15:38,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 23:15:38,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:15:38,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 23:15:38,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:15:38,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:15:38,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:15:38,886 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:15:38,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [739414800] [2021-11-02 23:15:38,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [739414800] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:15:38,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:15:38,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-02 23:15:38,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434937699] [2021-11-02 23:15:38,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:15:38,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:15:38,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:15:38,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:15:38,889 INFO L87 Difference]: Start difference. First operand 2805 states and 3961 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) [2021-11-02 23:15:44,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:15:44,262 INFO L93 Difference]: Finished difference Result 4419 states and 6013 transitions. [2021-11-02 23:15:44,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:15:44,263 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 [2021-11-02 23:15:44,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:15:44,290 INFO L225 Difference]: With dead ends: 4419 [2021-11-02 23:15:44,290 INFO L226 Difference]: Without dead ends: 4419 [2021-11-02 23:15:44,290 INFO L786 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 [2021-11-02 23:15:44,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4419 states. [2021-11-02 23:15:44,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4419 to 2801. [2021-11-02 23:15:44,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2801 states, 2009 states have (on average 1.947237431557989) internal successors, (3912), 2780 states have internal predecessors, (3912), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-02 23:15:44,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 3953 transitions. [2021-11-02 23:15:44,380 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 3953 transitions. Word has length 31 [2021-11-02 23:15:44,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:15:44,381 INFO L470 AbstractCegarLoop]: Abstraction has 2801 states and 3953 transitions. [2021-11-02 23:15:44,381 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) [2021-11-02 23:15:44,381 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 3953 transitions. [2021-11-02 23:15:44,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 23:15:44,382 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:15:44,382 INFO L513 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] [2021-11-02 23:15:44,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-02 23:15:44,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:15:44,594 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr43REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-02 23:15:44,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:15:44,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1247292017, now seen corresponding path program 1 times [2021-11-02 23:15:44,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:15:44,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1053585814] [2021-11-02 23:15:44,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:15:44,596 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:15:44,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:15:44,597 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:15:44,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-02 23:15:44,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:15:44,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 23:15:44,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:15:44,896 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 [2021-11-02 23:15:45,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:15:45,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:15:45,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:15:45,664 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:15:45,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1053585814] [2021-11-02 23:15:45,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1053585814] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:15:45,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:15:45,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-02 23:15:45,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304851277] [2021-11-02 23:15:45,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 23:15:45,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:15:45,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 23:15:45,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 23:15:45,668 INFO L87 Difference]: Start difference. First operand 2801 states and 3953 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 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) [2021-11-02 23:15:58,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:15:58,224 INFO L93 Difference]: Finished difference Result 3743 states and 4936 transitions. [2021-11-02 23:15:58,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 23:15:58,227 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 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 [2021-11-02 23:15:58,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:15:58,246 INFO L225 Difference]: With dead ends: 3743 [2021-11-02 23:15:58,246 INFO L226 Difference]: Without dead ends: 3743 [2021-11-02 23:15:58,247 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 23:15:58,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3743 states. [2021-11-02 23:15:58,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3743 to 2797. [2021-11-02 23:15:58,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2797 states, 2009 states have (on average 1.943255350920856) internal successors, (3904), 2776 states have internal predecessors, (3904), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-02 23:15:58,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 3945 transitions. [2021-11-02 23:15:58,326 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 3945 transitions. Word has length 31 [2021-11-02 23:15:58,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:15:58,328 INFO L470 AbstractCegarLoop]: Abstraction has 2797 states and 3945 transitions. [2021-11-02 23:15:58,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 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) [2021-11-02 23:15:58,329 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 3945 transitions. [2021-11-02 23:15:58,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-02 23:15:58,336 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:15:58,336 INFO L513 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] [2021-11-02 23:15:58,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-02 23:15:58,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:15:58,555 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-02 23:15:58,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:15:58,556 INFO L85 PathProgramCache]: Analyzing trace with hash 931034612, now seen corresponding path program 1 times [2021-11-02 23:15:58,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:15:58,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2100730290] [2021-11-02 23:15:58,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:15:58,557 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:15:58,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:15:58,558 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:15:58,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-02 23:15:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:15:58,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 23:15:58,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:15:59,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:15:59,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:15:59,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:15:59,174 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:15:59,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2100730290] [2021-11-02 23:15:59,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2100730290] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:15:59,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:15:59,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-02 23:15:59,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373749181] [2021-11-02 23:15:59,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:15:59,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:15:59,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:15:59,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:15:59,176 INFO L87 Difference]: Start difference. First operand 2797 states and 3945 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2021-11-02 23:15:59,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:15:59,250 INFO L93 Difference]: Finished difference Result 2785 states and 3925 transitions. [2021-11-02 23:15:59,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 23:15:59,250 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 46 [2021-11-02 23:15:59,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:15:59,264 INFO L225 Difference]: With dead ends: 2785 [2021-11-02 23:15:59,264 INFO L226 Difference]: Without dead ends: 2785 [2021-11-02 23:15:59,264 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:15:59,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2021-11-02 23:15:59,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 2785. [2021-11-02 23:15:59,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2785 states, 1997 states have (on average 1.944917376064096) internal successors, (3884), 2764 states have internal predecessors, (3884), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-02 23:15:59,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 3925 transitions. [2021-11-02 23:15:59,342 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 3925 transitions. Word has length 46 [2021-11-02 23:15:59,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:15:59,343 INFO L470 AbstractCegarLoop]: Abstraction has 2785 states and 3925 transitions. [2021-11-02 23:15:59,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2021-11-02 23:15:59,343 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 3925 transitions. [2021-11-02 23:15:59,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-02 23:15:59,348 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:15:59,349 INFO L513 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] [2021-11-02 23:15:59,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-02 23:15:59,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:15:59,562 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-02 23:15:59,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:15:59,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1498564056, now seen corresponding path program 1 times [2021-11-02 23:15:59,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:15:59,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601138796] [2021-11-02 23:15:59,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:15:59,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:15:59,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:15:59,564 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:15:59,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-02 23:15:59,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:15:59,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 23:15:59,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:16:00,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:16:00,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:16:00,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:16:00,765 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:16:00,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601138796] [2021-11-02 23:16:00,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1601138796] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:16:00,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:16:00,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-02 23:16:00,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374002988] [2021-11-02 23:16:00,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:16:00,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:16:00,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:16:00,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:16:00,769 INFO L87 Difference]: Start difference. First operand 2785 states and 3925 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-02 23:16:01,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:01,039 INFO L93 Difference]: Finished difference Result 2974 states and 3960 transitions. [2021-11-02 23:16:01,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:16:01,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 54 [2021-11-02 23:16:01,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:01,052 INFO L225 Difference]: With dead ends: 2974 [2021-11-02 23:16:01,052 INFO L226 Difference]: Without dead ends: 2974 [2021-11-02 23:16:01,053 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:16:01,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2021-11-02 23:16:01,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 2601. [2021-11-02 23:16:01,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2601 states, 1813 states have (on average 1.9464975179260893) internal successors, (3529), 2580 states have internal predecessors, (3529), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-02 23:16:01,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2601 states to 2601 states and 3570 transitions. [2021-11-02 23:16:01,110 INFO L78 Accepts]: Start accepts. Automaton has 2601 states and 3570 transitions. Word has length 54 [2021-11-02 23:16:01,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:01,110 INFO L470 AbstractCegarLoop]: Abstraction has 2601 states and 3570 transitions. [2021-11-02 23:16:01,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-02 23:16:01,111 INFO L276 IsEmpty]: Start isEmpty. Operand 2601 states and 3570 transitions. [2021-11-02 23:16:01,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-02 23:16:01,111 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:01,112 INFO L513 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] [2021-11-02 23:16:01,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-02 23:16:01,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:16:01,325 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr61REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-02 23:16:01,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:01,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1939122981, now seen corresponding path program 1 times [2021-11-02 23:16:01,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:16:01,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2048081205] [2021-11-02 23:16:01,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:01,326 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:16:01,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:16:01,327 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:16:01,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-02 23:16:01,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:01,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 23:16:01,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:16:01,987 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 [2021-11-02 23:16:01,993 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 [2021-11-02 23:16:02,722 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-02 23:16:02,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2021-11-02 23:16:02,732 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 23:16:02,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-11-02 23:16:02,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:16:02,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:16:07,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:16:07,302 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:16:07,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2048081205] [2021-11-02 23:16:07,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2048081205] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:16:07,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:16:07,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-02 23:16:07,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779203932] [2021-11-02 23:16:07,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 23:16:07,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:16:07,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 23:16:07,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-02 23:16:07,305 INFO L87 Difference]: Start difference. First operand 2601 states and 3570 transitions. Second operand has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 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) [2021-11-02 23:16:31,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:31,399 INFO L93 Difference]: Finished difference Result 4221 states and 5706 transitions. [2021-11-02 23:16:31,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 23:16:31,401 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 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 57 [2021-11-02 23:16:31,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:31,412 INFO L225 Difference]: With dead ends: 4221 [2021-11-02 23:16:31,412 INFO L226 Difference]: Without dead ends: 4221 [2021-11-02 23:16:31,413 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-02 23:16:31,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4221 states. [2021-11-02 23:16:31,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4221 to 2741. [2021-11-02 23:16:31,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2741 states, 1991 states have (on average 1.9010547463586138) internal successors, (3785), 2714 states have internal predecessors, (3785), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-02 23:16:31,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 3838 transitions. [2021-11-02 23:16:31,473 INFO L78 Accepts]: Start accepts. Automaton has 2741 states and 3838 transitions. Word has length 57 [2021-11-02 23:16:31,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:31,474 INFO L470 AbstractCegarLoop]: Abstraction has 2741 states and 3838 transitions. [2021-11-02 23:16:31,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 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) [2021-11-02 23:16:31,474 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 3838 transitions. [2021-11-02 23:16:31,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-02 23:16:31,475 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:31,476 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:16:31,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-02 23:16:31,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:16:31,692 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr66REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-02 23:16:31,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:31,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1549669755, now seen corresponding path program 1 times [2021-11-02 23:16:31,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:16:31,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657301859] [2021-11-02 23:16:31,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:31,693 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:16:31,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:16:31,695 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:16:31,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-02 23:16:32,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:32,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 23:16:32,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:16:32,395 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 [2021-11-02 23:16:32,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-02 23:16:32,453 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 [2021-11-02 23:16:32,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:16:32,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:16:32,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:16:32,614 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:16:32,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657301859] [2021-11-02 23:16:32,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1657301859] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:16:32,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:16:32,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-02 23:16:32,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625968333] [2021-11-02 23:16:32,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 23:16:32,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:16:32,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 23:16:32,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:16:32,617 INFO L87 Difference]: Start difference. First operand 2741 states and 3838 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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) [2021-11-02 23:16:38,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:38,602 INFO L93 Difference]: Finished difference Result 2740 states and 3836 transitions. [2021-11-02 23:16:38,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 23:16:38,603 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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 62 [2021-11-02 23:16:38,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:38,609 INFO L225 Difference]: With dead ends: 2740 [2021-11-02 23:16:38,609 INFO L226 Difference]: Without dead ends: 2740 [2021-11-02 23:16:38,609 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-02 23:16:38,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2740 states. [2021-11-02 23:16:38,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2740 to 2740. [2021-11-02 23:16:38,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2740 states, 1991 states have (on average 1.9000502260170768) internal successors, (3783), 2713 states have internal predecessors, (3783), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-02 23:16:38,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2740 states to 2740 states and 3836 transitions. [2021-11-02 23:16:38,655 INFO L78 Accepts]: Start accepts. Automaton has 2740 states and 3836 transitions. Word has length 62 [2021-11-02 23:16:38,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:38,656 INFO L470 AbstractCegarLoop]: Abstraction has 2740 states and 3836 transitions. [2021-11-02 23:16:38,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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) [2021-11-02 23:16:38,656 INFO L276 IsEmpty]: Start isEmpty. Operand 2740 states and 3836 transitions. [2021-11-02 23:16:38,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-02 23:16:38,657 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:38,657 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:16:38,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-02 23:16:38,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:16:38,873 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr67REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-02 23:16:38,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:38,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1549669756, now seen corresponding path program 1 times [2021-11-02 23:16:38,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:16:38,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13162340] [2021-11-02 23:16:38,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:38,875 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:16:38,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:16:38,876 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:16:38,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-02 23:16:39,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:39,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 23:16:39,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:16:39,617 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 [2021-11-02 23:16:39,657 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 [2021-11-02 23:16:39,670 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 [2021-11-02 23:16:39,747 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 [2021-11-02 23:16:39,751 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 [2021-11-02 23:16:39,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:16:39,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:16:40,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:16:40,104 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:16:40,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [13162340] [2021-11-02 23:16:40,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [13162340] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:16:40,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:16:40,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-02 23:16:40,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266535864] [2021-11-02 23:16:40,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 23:16:40,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:16:40,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 23:16:40,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-02 23:16:40,106 INFO L87 Difference]: Start difference. First operand 2740 states and 3836 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 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) [2021-11-02 23:16:56,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:56,073 INFO L93 Difference]: Finished difference Result 2739 states and 3834 transitions. [2021-11-02 23:16:56,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 23:16:56,075 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 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 62 [2021-11-02 23:16:56,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:56,082 INFO L225 Difference]: With dead ends: 2739 [2021-11-02 23:16:56,082 INFO L226 Difference]: Without dead ends: 2739 [2021-11-02 23:16:56,082 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-02 23:16:56,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2739 states. [2021-11-02 23:16:56,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2739 to 2739. [2021-11-02 23:16:56,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2739 states, 1989 states have (on average 1.9009552538964303) internal successors, (3781), 2712 states have internal predecessors, (3781), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-02 23:16:56,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2739 states to 2739 states and 3834 transitions. [2021-11-02 23:16:56,137 INFO L78 Accepts]: Start accepts. Automaton has 2739 states and 3834 transitions. Word has length 62 [2021-11-02 23:16:56,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:56,137 INFO L470 AbstractCegarLoop]: Abstraction has 2739 states and 3834 transitions. [2021-11-02 23:16:56,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 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) [2021-11-02 23:16:56,138 INFO L276 IsEmpty]: Start isEmpty. Operand 2739 states and 3834 transitions. [2021-11-02 23:16:56,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-02 23:16:56,138 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:56,139 INFO L513 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] [2021-11-02 23:16:56,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-02 23:16:56,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:16:56,354 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-02 23:16:56,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:56,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1507172066, now seen corresponding path program 1 times [2021-11-02 23:16:56,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:16:56,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983937691] [2021-11-02 23:16:56,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:56,356 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:16:56,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:16:56,357 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:16:56,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-02 23:16:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:56,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 23:16:56,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:16:57,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:16:57,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:16:57,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:16:57,235 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:16:57,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1983937691] [2021-11-02 23:16:57,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1983937691] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:16:57,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:16:57,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-02 23:16:57,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045146167] [2021-11-02 23:16:57,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 23:16:57,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:16:57,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 23:16:57,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-02 23:16:57,238 INFO L87 Difference]: Start difference. First operand 2739 states and 3834 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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) [2021-11-02 23:16:57,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:57,389 INFO L93 Difference]: Finished difference Result 2749 states and 3852 transitions. [2021-11-02 23:16:57,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 23:16:57,390 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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 70 [2021-11-02 23:16:57,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:57,399 INFO L225 Difference]: With dead ends: 2749 [2021-11-02 23:16:57,399 INFO L226 Difference]: Without dead ends: 2749 [2021-11-02 23:16:57,399 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-02 23:16:57,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2749 states. [2021-11-02 23:16:57,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2749 to 2749. [2021-11-02 23:16:57,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2749 states, 1997 states have (on average 1.899349023535303) internal successors, (3793), 2721 states have internal predecessors, (3793), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (32), 22 states have call predecessors, (32), 26 states have call successors, (32) [2021-11-02 23:16:57,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2749 states to 2749 states and 3852 transitions. [2021-11-02 23:16:57,464 INFO L78 Accepts]: Start accepts. Automaton has 2749 states and 3852 transitions. Word has length 70 [2021-11-02 23:16:57,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:57,464 INFO L470 AbstractCegarLoop]: Abstraction has 2749 states and 3852 transitions. [2021-11-02 23:16:57,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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) [2021-11-02 23:16:57,465 INFO L276 IsEmpty]: Start isEmpty. Operand 2749 states and 3852 transitions. [2021-11-02 23:16:57,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-02 23:16:57,466 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:57,466 INFO L513 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] [2021-11-02 23:16:57,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-02 23:16:57,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:16:57,682 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-02 23:16:57,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:57,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1329602274, now seen corresponding path program 1 times [2021-11-02 23:16:57,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:16:57,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1435339678] [2021-11-02 23:16:57,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:57,683 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:16:57,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:16:57,685 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:16:57,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-02 23:16:58,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:58,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 23:16:58,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:16:58,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:16:58,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:16:58,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:16:58,730 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:16:58,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1435339678] [2021-11-02 23:16:58,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1435339678] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 23:16:58,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:16:58,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-02 23:16:58,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692616369] [2021-11-02 23:16:58,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 23:16:58,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:16:58,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 23:16:58,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-02 23:16:58,733 INFO L87 Difference]: Start difference. First operand 2749 states and 3852 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 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) [2021-11-02 23:16:59,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:59,367 INFO L93 Difference]: Finished difference Result 2763 states and 3880 transitions. [2021-11-02 23:16:59,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 23:16:59,368 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 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 72 [2021-11-02 23:16:59,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:59,375 INFO L225 Difference]: With dead ends: 2763 [2021-11-02 23:16:59,376 INFO L226 Difference]: Without dead ends: 2759 [2021-11-02 23:16:59,379 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-02 23:16:59,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2759 states. [2021-11-02 23:16:59,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2759 to 2755. [2021-11-02 23:16:59,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2755 states, 2003 states have (on average 1.8976535197204194) internal successors, (3801), 2727 states have internal predecessors, (3801), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (32), 22 states have call predecessors, (32), 26 states have call successors, (32) [2021-11-02 23:16:59,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2755 states to 2755 states and 3860 transitions. [2021-11-02 23:16:59,432 INFO L78 Accepts]: Start accepts. Automaton has 2755 states and 3860 transitions. Word has length 72 [2021-11-02 23:16:59,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:59,433 INFO L470 AbstractCegarLoop]: Abstraction has 2755 states and 3860 transitions. [2021-11-02 23:16:59,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 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) [2021-11-02 23:16:59,433 INFO L276 IsEmpty]: Start isEmpty. Operand 2755 states and 3860 transitions. [2021-11-02 23:16:59,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 23:16:59,440 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:59,440 INFO L513 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] [2021-11-02 23:16:59,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-02 23:16:59,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:16:59,657 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-02 23:16:59,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:59,657 INFO L85 PathProgramCache]: Analyzing trace with hash -801825054, now seen corresponding path program 2 times [2021-11-02 23:16:59,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:16:59,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [131764460] [2021-11-02 23:16:59,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 23:16:59,659 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:16:59,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:16:59,660 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:16:59,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-02 23:17:00,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 23:17:00,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:17:00,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 23:17:00,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:17:00,755 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:17:00,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:17:01,392 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:17:01,392 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:17:01,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [131764460] [2021-11-02 23:17:01,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [131764460] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 23:17:01,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:17:01,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-02 23:17:01,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884404512] [2021-11-02 23:17:01,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 23:17:01,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:17:01,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 23:17:01,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-02 23:17:01,394 INFO L87 Difference]: Start difference. First operand 2755 states and 3860 transitions. Second operand has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 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) [2021-11-02 23:17:03,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:17:03,215 INFO L93 Difference]: Finished difference Result 2783 states and 3928 transitions. [2021-11-02 23:17:03,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-02 23:17:03,218 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 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 76 [2021-11-02 23:17:03,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:17:03,225 INFO L225 Difference]: With dead ends: 2783 [2021-11-02 23:17:03,225 INFO L226 Difference]: Without dead ends: 2779 [2021-11-02 23:17:03,226 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-02 23:17:03,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2779 states. [2021-11-02 23:17:03,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2779 to 2767. [2021-11-02 23:17:03,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2767 states, 2015 states have (on average 1.8942928039702234) internal successors, (3817), 2739 states have internal predecessors, (3817), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (32), 22 states have call predecessors, (32), 26 states have call successors, (32) [2021-11-02 23:17:03,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2767 states to 2767 states and 3876 transitions. [2021-11-02 23:17:03,278 INFO L78 Accepts]: Start accepts. Automaton has 2767 states and 3876 transitions. Word has length 76 [2021-11-02 23:17:03,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:17:03,278 INFO L470 AbstractCegarLoop]: Abstraction has 2767 states and 3876 transitions. [2021-11-02 23:17:03,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 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) [2021-11-02 23:17:03,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2767 states and 3876 transitions. [2021-11-02 23:17:03,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-02 23:17:03,279 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:17:03,280 INFO L513 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:17:03,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-02 23:17:03,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:17:03,493 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-02 23:17:03,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:17:03,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1969283358, now seen corresponding path program 3 times [2021-11-02 23:17:03,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:17:03,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1267459063] [2021-11-02 23:17:03,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 23:17:03,494 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:17:03,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:17:03,495 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:17:03,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-02 23:17:04,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-02 23:17:04,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:17:04,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-02 23:17:04,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:17:05,368 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:17:05,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:17:06,934 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:17:06,935 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:17:06,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1267459063] [2021-11-02 23:17:06,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1267459063] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 23:17:06,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:17:06,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-02 23:17:06,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578559503] [2021-11-02 23:17:06,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-02 23:17:06,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:17:06,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-02 23:17:06,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-02 23:17:06,938 INFO L87 Difference]: Start difference. First operand 2767 states and 3876 transitions. Second operand has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 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) [2021-11-02 23:17:15,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:17:15,181 INFO L93 Difference]: Finished difference Result 2823 states and 4024 transitions. [2021-11-02 23:17:15,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-02 23:17:15,182 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 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 84 [2021-11-02 23:17:15,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:17:15,190 INFO L225 Difference]: With dead ends: 2823 [2021-11-02 23:17:15,190 INFO L226 Difference]: Without dead ends: 2819 [2021-11-02 23:17:15,193 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1817, Invalid=4189, Unknown=0, NotChecked=0, Total=6006 [2021-11-02 23:17:15,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2819 states. [2021-11-02 23:17:15,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2819 to 2791. [2021-11-02 23:17:15,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2791 states, 2039 states have (on average 1.8876900441392839) internal successors, (3849), 2763 states have internal predecessors, (3849), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (32), 22 states have call predecessors, (32), 26 states have call successors, (32) [2021-11-02 23:17:15,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 3908 transitions. [2021-11-02 23:17:15,245 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 3908 transitions. Word has length 84 [2021-11-02 23:17:15,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:17:15,246 INFO L470 AbstractCegarLoop]: Abstraction has 2791 states and 3908 transitions. [2021-11-02 23:17:15,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 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) [2021-11-02 23:17:15,246 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 3908 transitions. [2021-11-02 23:17:15,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-02 23:17:15,247 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:17:15,247 INFO L513 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:17:15,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-02 23:17:15,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:17:15,461 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-02 23:17:15,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:17:15,462 INFO L85 PathProgramCache]: Analyzing trace with hash -512549150, now seen corresponding path program 4 times [2021-11-02 23:17:15,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:17:15,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769711505] [2021-11-02 23:17:15,463 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 23:17:15,463 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:17:15,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:17:15,464 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:17:15,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-02 23:17:16,237 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 23:17:16,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:17:16,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-02 23:17:16,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:17:17,422 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:17:17,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:17:22,328 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:17:22,328 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:17:22,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769711505] [2021-11-02 23:17:22,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1769711505] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 23:17:22,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:17:22,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-02 23:17:22,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052500300] [2021-11-02 23:17:22,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-02 23:17:22,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:17:22,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-02 23:17:22,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-02 23:17:22,332 INFO L87 Difference]: Start difference. First operand 2791 states and 3908 transitions. Second operand has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 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) [2021-11-02 23:17:42,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:17:42,539 INFO L93 Difference]: Finished difference Result 2885 states and 4180 transitions. [2021-11-02 23:17:42,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-11-02 23:17:42,540 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 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 100 [2021-11-02 23:17:42,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:17:42,547 INFO L225 Difference]: With dead ends: 2885 [2021-11-02 23:17:42,547 INFO L226 Difference]: Without dead ends: 2881 [2021-11-02 23:17:42,554 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2373 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=4552, Invalid=14908, Unknown=0, NotChecked=0, Total=19460 [2021-11-02 23:17:42,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2021-11-02 23:17:42,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 2821. [2021-11-02 23:17:42,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2821 states, 2069 states have (on average 1.8825519574673755) internal successors, (3895), 2793 states have internal predecessors, (3895), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (32), 22 states have call predecessors, (32), 26 states have call successors, (32) [2021-11-02 23:17:42,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2821 states to 2821 states and 3954 transitions. [2021-11-02 23:17:42,630 INFO L78 Accepts]: Start accepts. Automaton has 2821 states and 3954 transitions. Word has length 100 [2021-11-02 23:17:42,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:17:42,630 INFO L470 AbstractCegarLoop]: Abstraction has 2821 states and 3954 transitions. [2021-11-02 23:17:42,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 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) [2021-11-02 23:17:42,631 INFO L276 IsEmpty]: Start isEmpty. Operand 2821 states and 3954 transitions. [2021-11-02 23:17:42,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-02 23:17:42,632 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:17:42,632 INFO L513 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:17:42,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-02 23:17:42,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:17:42,850 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-02 23:17:42,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:17:42,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1331912990, now seen corresponding path program 5 times [2021-11-02 23:17:42,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:17:42,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87118874] [2021-11-02 23:17:42,852 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 23:17:42,852 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:17:42,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:17:42,861 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:17:42,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24420f-376f-4358-85dd-ca337bbba9e9/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-02 23:17:44,597 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-02 23:17:44,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:17:44,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-02 23:17:44,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:17:44,653 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 [2021-11-02 23:17:44,913 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-02 23:17:44,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-11-02 23:17:44,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-02 23:17:45,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30