./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3f1ddce0da39afb2e81d3f6974a6168ade2d49435b1ce063903c0017c6d40b05 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:24:56,948 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:24:56,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:24:56,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:24:56,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:24:56,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:24:56,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:24:57,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:24:57,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:24:57,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:24:57,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:24:57,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:24:57,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:24:57,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:24:57,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:24:57,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:24:57,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:24:57,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:24:57,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:24:57,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:24:57,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:24:57,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:24:57,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:24:57,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:24:57,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:24:57,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:24:57,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:24:57,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:24:57,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:24:57,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:24:57,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:24:57,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:24:57,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:24:57,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:24:57,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:24:57,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:24:57,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:24:57,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:24:57,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:24:57,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:24:57,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:24:57,065 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-13 18:24:57,097 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:24:57,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:24:57,098 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:24:57,098 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:24:57,099 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:24:57,099 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:24:57,100 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:24:57,101 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:24:57,101 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:24:57,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:24:57,101 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:24:57,102 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 18:24:57,102 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:24:57,102 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:24:57,102 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:24:57,103 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 18:24:57,103 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 18:24:57,103 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 18:24:57,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:24:57,103 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 18:24:57,104 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:24:57,104 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:24:57,104 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:24:57,104 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:24:57,105 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:24:57,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:24:57,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:24:57,105 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:24:57,106 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:24:57,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:24:57,106 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:24:57,106 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_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f1ddce0da39afb2e81d3f6974a6168ade2d49435b1ce063903c0017c6d40b05 [2021-11-13 18:24:57,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:24:57,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:24:57,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:24:57,517 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:24:57,520 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:24:57,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i [2021-11-13 18:24:57,630 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/data/9aa61355b/d9418c5ddf224970a857138539761817/FLAG3cd0180b6 [2021-11-13 18:24:58,621 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:24:58,622 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i [2021-11-13 18:24:58,671 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/data/9aa61355b/d9418c5ddf224970a857138539761817/FLAG3cd0180b6 [2021-11-13 18:24:58,691 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/data/9aa61355b/d9418c5ddf224970a857138539761817 [2021-11-13 18:24:58,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:24:58,698 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 18:24:58,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:24:58,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:24:58,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:24:58,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:24:58" (1/1) ... [2021-11-13 18:24:58,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17407260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:24:58, skipping insertion in model container [2021-11-13 18:24:58,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:24:58" (1/1) ... [2021-11-13 18:24:58,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:24:58,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:24:59,446 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_283fd9cd-18c2-456d-87ab-f06fda58d4eb/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i[33022,33035] [2021-11-13 18:24:59,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:24:59,847 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-13 18:24:59,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4ee330a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:24:59, skipping insertion in model container [2021-11-13 18:24:59,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:24:59,849 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-13 18:24:59,852 INFO L158 Benchmark]: Toolchain (without parser) took 1152.74ms. Allocated memory is still 96.5MB. Free memory was 75.3MB in the beginning and 47.7MB in the end (delta: 27.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2021-11-13 18:24:59,866 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 79.7MB. Free memory is still 53.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:24:59,868 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1149.49ms. Allocated memory is still 96.5MB. Free memory was 75.3MB in the beginning and 47.7MB in the end (delta: 27.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2021-11-13 18:24:59,870 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 79.7MB. Free memory is still 53.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1149.49ms. Allocated memory is still 96.5MB. Free memory was 75.3MB in the beginning and 47.7MB in the end (delta: 27.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 734]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3f1ddce0da39afb2e81d3f6974a6168ade2d49435b1ce063903c0017c6d40b05 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:25:02,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:25:02,741 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:25:02,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:25:02,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:25:02,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:25:02,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:25:02,842 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:25:02,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:25:02,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:25:02,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:25:02,857 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:25:02,858 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:25:02,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:25:02,867 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:25:02,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:25:02,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:25:02,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:25:02,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:25:02,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:25:02,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:25:02,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:25:02,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:25:02,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:25:02,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:25:02,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:25:02,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:25:02,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:25:02,907 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:25:02,908 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:25:02,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:25:02,910 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:25:02,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:25:02,913 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:25:02,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:25:02,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:25:02,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:25:02,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:25:02,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:25:02,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:25:02,918 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:25:02,919 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-13 18:25:02,949 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:25:02,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:25:02,950 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:25:02,951 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:25:02,951 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:25:02,952 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:25:02,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:25:02,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:25:02,953 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:25:02,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:25:02,954 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:25:02,954 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 18:25:02,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:25:02,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:25:02,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:25:02,955 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 18:25:02,956 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 18:25:02,956 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 18:25:02,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:25:02,956 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 18:25:02,957 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 18:25:02,957 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 18:25:02,957 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:25:02,957 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:25:02,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:25:02,958 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:25:02,958 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:25:02,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:25:02,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:25:02,959 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:25:02,959 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 18:25:02,959 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 18:25:02,960 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:25:02,960 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 18:25:02,960 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_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f1ddce0da39afb2e81d3f6974a6168ade2d49435b1ce063903c0017c6d40b05 [2021-11-13 18:25:03,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:25:03,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:25:03,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:25:03,441 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:25:03,442 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:25:03,444 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i [2021-11-13 18:25:03,526 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/data/daf502316/ffc0f3988c3645bda7e2b1086d947043/FLAG42ba65790 [2021-11-13 18:25:04,400 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:25:04,406 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i [2021-11-13 18:25:04,438 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/data/daf502316/ffc0f3988c3645bda7e2b1086d947043/FLAG42ba65790 [2021-11-13 18:25:04,493 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/data/daf502316/ffc0f3988c3645bda7e2b1086d947043 [2021-11-13 18:25:04,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:25:04,500 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 18:25:04,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:25:04,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:25:04,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:25:04,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:25:04" (1/1) ... [2021-11-13 18:25:04,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e9574d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:25:04, skipping insertion in model container [2021-11-13 18:25:04,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:25:04" (1/1) ... [2021-11-13 18:25:04,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:25:04,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:25:05,286 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_283fd9cd-18c2-456d-87ab-f06fda58d4eb/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i[33022,33035] [2021-11-13 18:25:05,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:25:05,785 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 18:25:05,819 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:25:05,866 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_283fd9cd-18c2-456d-87ab-f06fda58d4eb/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i[33022,33035] [2021-11-13 18:25:06,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:25:06,103 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:25:06,145 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_283fd9cd-18c2-456d-87ab-f06fda58d4eb/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i[33022,33035] [2021-11-13 18:25:06,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:25:06,361 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:25:06,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:25:06 WrapperNode [2021-11-13 18:25:06,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:25:06,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:25:06,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:25:06,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:25:06,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:25:06" (1/1) ... [2021-11-13 18:25:06,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:25:06" (1/1) ... [2021-11-13 18:25:06,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:25:06" (1/1) ... [2021-11-13 18:25:06,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:25:06" (1/1) ... [2021-11-13 18:25:06,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:25:06" (1/1) ... [2021-11-13 18:25:06,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:25:06" (1/1) ... [2021-11-13 18:25:06,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:25:06" (1/1) ... [2021-11-13 18:25:06,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:25:06,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:25:06,682 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:25:06,683 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:25:06,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:25:06" (1/1) ... [2021-11-13 18:25:06,692 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:25:06,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:25:06,728 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:25:06,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:25:06,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-13 18:25:06,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:25:06,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 18:25:06,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-13 18:25:06,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-13 18:25:06,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-13 18:25:06,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-13 18:25:06,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-13 18:25:06,780 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-13 18:25:06,781 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 18:25:06,781 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-13 18:25:06,781 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-13 18:25:06,781 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 18:25:06,781 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-13 18:25:06,781 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-13 18:25:06,782 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-13 18:25:06,782 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-13 18:25:06,782 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-13 18:25:06,782 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-13 18:25:06,782 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-13 18:25:06,782 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-13 18:25:06,783 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-13 18:25:06,783 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-13 18:25:06,783 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-13 18:25:06,783 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-13 18:25:06,783 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-13 18:25:06,783 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-13 18:25:06,784 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-13 18:25:06,784 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-13 18:25:06,784 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-13 18:25:06,784 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-13 18:25:06,784 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-13 18:25:06,784 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-13 18:25:06,785 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-13 18:25:06,785 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-13 18:25:06,786 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-13 18:25:06,786 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-13 18:25:06,786 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-13 18:25:06,787 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-13 18:25:06,787 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-13 18:25:06,787 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-13 18:25:06,787 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-13 18:25:06,787 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-13 18:25:06,788 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-13 18:25:06,788 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-13 18:25:06,788 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-13 18:25:06,788 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-13 18:25:06,789 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-13 18:25:06,789 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-13 18:25:06,789 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-13 18:25:06,789 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-13 18:25:06,789 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-13 18:25:06,789 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-13 18:25:06,790 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-13 18:25:06,790 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-13 18:25:06,790 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-13 18:25:06,790 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-13 18:25:06,792 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-13 18:25:06,792 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-13 18:25:06,793 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-13 18:25:06,794 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-13 18:25:06,794 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-13 18:25:06,794 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-13 18:25:06,794 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-13 18:25:06,794 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-13 18:25:06,795 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-13 18:25:06,795 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-13 18:25:06,795 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-13 18:25:06,795 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-13 18:25:06,795 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-13 18:25:06,795 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-13 18:25:06,831 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-13 18:25:06,831 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-13 18:25:06,831 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-13 18:25:06,831 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-13 18:25:06,831 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-13 18:25:06,832 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-13 18:25:06,832 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-13 18:25:06,833 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-13 18:25:06,833 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-13 18:25:06,833 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-13 18:25:06,833 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-13 18:25:06,833 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-13 18:25:06,833 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-13 18:25:06,834 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-13 18:25:06,834 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-13 18:25:06,834 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-13 18:25:06,834 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-13 18:25:06,834 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-13 18:25:06,834 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-13 18:25:06,834 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-13 18:25:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-13 18:25:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-13 18:25:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-13 18:25:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-13 18:25:06,836 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-13 18:25:06,836 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-13 18:25:06,836 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-13 18:25:06,836 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-13 18:25:06,837 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-13 18:25:06,837 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-13 18:25:06,838 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-13 18:25:06,838 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-13 18:25:06,838 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-13 18:25:06,838 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-13 18:25:06,838 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-13 18:25:06,838 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-13 18:25:06,839 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-13 18:25:06,839 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-13 18:25:06,839 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-13 18:25:06,839 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-13 18:25:06,840 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-13 18:25:06,840 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-13 18:25:06,840 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-13 18:25:06,840 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-13 18:25:06,841 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-13 18:25:06,841 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-13 18:25:06,841 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-13 18:25:06,842 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-13 18:25:06,845 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-13 18:25:06,845 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-13 18:25:06,845 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-13 18:25:06,845 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-13 18:25:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-13 18:25:06,848 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-13 18:25:06,849 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-13 18:25:06,849 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-13 18:25:06,849 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-13 18:25:06,853 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-13 18:25:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-13 18:25:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-13 18:25:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-13 18:25:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-13 18:25:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-13 18:25:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-13 18:25:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-13 18:25:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-13 18:25:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-13 18:25:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-13 18:25:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-13 18:25:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-13 18:25:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-13 18:25:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-13 18:25:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-13 18:25:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-13 18:25:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-13 18:25:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-13 18:25:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-13 18:25:06,856 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-13 18:25:06,857 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-13 18:25:06,857 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-13 18:25:06,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-13 18:25:06,857 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-13 18:25:06,857 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-13 18:25:06,857 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-13 18:25:06,858 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-13 18:25:06,858 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-13 18:25:06,858 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-13 18:25:06,858 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-13 18:25:06,858 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-13 18:25:06,858 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-13 18:25:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-13 18:25:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-13 18:25:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-13 18:25:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-13 18:25:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-13 18:25:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-13 18:25:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-13 18:25:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-13 18:25:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-13 18:25:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-13 18:25:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-13 18:25:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-13 18:25:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-13 18:25:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-13 18:25:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:25:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 18:25:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-13 18:25:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-13 18:25:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:25:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 18:25:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 18:25:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 18:25:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:25:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:25:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 18:25:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:25:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-13 18:25:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 18:25:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:25:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 18:25:06,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 18:25:07,474 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-13 18:25:19,066 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:25:19,067 INFO L299 CfgBuilder]: Removed 160 assume(true) statements. [2021-11-13 18:25:19,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:25:19 BoogieIcfgContainer [2021-11-13 18:25:19,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:25:19,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:25:19,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:25:19,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:25:19,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:25:04" (1/3) ... [2021-11-13 18:25:19,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10aa42c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:25:19, skipping insertion in model container [2021-11-13 18:25:19,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:25:06" (2/3) ... [2021-11-13 18:25:19,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10aa42c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:25:19, skipping insertion in model container [2021-11-13 18:25:19,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:25:19" (3/3) ... [2021-11-13 18:25:19,085 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test10-2.i [2021-11-13 18:25:19,093 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:25:19,093 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1095 error locations. [2021-11-13 18:25:19,154 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:25:19,163 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:25:19,170 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1095 error locations. [2021-11-13 18:25:19,249 INFO L276 IsEmpty]: Start isEmpty. Operand has 2264 states, 1153 states have (on average 2.2133564614050303) internal successors, (2552), 2246 states have internal predecessors, (2552), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 18:25:19,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-13 18:25:19,257 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:25:19,258 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:25:19,259 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-13 18:25:19,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:25:19,269 INFO L85 PathProgramCache]: Analyzing trace with hash 2126582278, now seen corresponding path program 1 times [2021-11-13 18:25:19,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:25:19,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489795694] [2021-11-13 18:25:19,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:25:19,284 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:25:19,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:25:19,292 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:25:19,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 18:25:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:25:19,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:25:19,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:25:19,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:25:19,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:25:19,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:25:19,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:25:19,896 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:25:19,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489795694] [2021-11-13 18:25:19,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [489795694] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:25:19,897 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:25:19,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 18:25:19,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920289814] [2021-11-13 18:25:19,901 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:25:19,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:25:19,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:25:19,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:25:19,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:25:19,964 INFO L87 Difference]: Start difference. First operand has 2264 states, 1153 states have (on average 2.2133564614050303) internal successors, (2552), 2246 states have internal predecessors, (2552), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:25:25,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:25:25,513 INFO L93 Difference]: Finished difference Result 2939 states and 3125 transitions. [2021-11-13 18:25:25,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:25:25,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-13 18:25:25,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:25:25,563 INFO L225 Difference]: With dead ends: 2939 [2021-11-13 18:25:25,564 INFO L226 Difference]: Without dead ends: 2936 [2021-11-13 18:25:25,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:25:25,570 INFO L933 BasicCegarLoop]: 1399 mSDtfsCounter, 2142 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4464.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2152 SdHoareTripleChecker+Valid, 1879 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.15ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5317.10ms IncrementalHoareTripleChecker+Time [2021-11-13 18:25:25,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2152 Valid, 1879 Invalid, 1495 Unknown, 0 Unchecked, 38.15ms Time], IncrementalHoareTripleChecker [23 Valid, 1472 Invalid, 0 Unknown, 0 Unchecked, 5317.10ms Time] [2021-11-13 18:25:25,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2021-11-13 18:25:25,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 2405. [2021-11-13 18:25:25,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2405 states, 1319 states have (on average 2.050796057619409) internal successors, (2705), 2386 states have internal predecessors, (2705), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 18:25:25,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2405 states to 2405 states and 2740 transitions. [2021-11-13 18:25:25,792 INFO L78 Accepts]: Start accepts. Automaton has 2405 states and 2740 transitions. Word has length 7 [2021-11-13 18:25:25,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:25:25,794 INFO L470 AbstractCegarLoop]: Abstraction has 2405 states and 2740 transitions. [2021-11-13 18:25:25,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:25:25,795 INFO L276 IsEmpty]: Start isEmpty. Operand 2405 states and 2740 transitions. [2021-11-13 18:25:25,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-13 18:25:25,795 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:25:25,796 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:25:25,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:25:26,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:25:26,015 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-13 18:25:26,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:25:26,016 INFO L85 PathProgramCache]: Analyzing trace with hash 2126582279, now seen corresponding path program 1 times [2021-11-13 18:25:26,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:25:26,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324410727] [2021-11-13 18:25:26,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:25:26,018 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:25:26,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:25:26,019 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:25:26,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 18:25:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:25:26,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:25:26,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:25:26,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:25:26,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:25:26,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:25:26,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:25:26,419 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:25:26,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324410727] [2021-11-13 18:25:26,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [324410727] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:25:26,420 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:25:26,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 18:25:26,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550664850] [2021-11-13 18:25:26,421 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:25:26,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:25:26,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:25:26,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:25:26,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:25:26,423 INFO L87 Difference]: Start difference. First operand 2405 states and 2740 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:25:39,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:25:39,695 INFO L93 Difference]: Finished difference Result 3705 states and 4151 transitions. [2021-11-13 18:25:39,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:25:39,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-13 18:25:39,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:25:39,722 INFO L225 Difference]: With dead ends: 3705 [2021-11-13 18:25:39,723 INFO L226 Difference]: Without dead ends: 3705 [2021-11-13 18:25:39,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:25:39,725 INFO L933 BasicCegarLoop]: 1686 mSDtfsCounter, 2670 mSDsluCounter, 1846 mSDsCounter, 0 mSdLazyCounter, 2313 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11461.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2678 SdHoareTripleChecker+Valid, 3532 SdHoareTripleChecker+Invalid, 2336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.71ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13089.32ms IncrementalHoareTripleChecker+Time [2021-11-13 18:25:39,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2678 Valid, 3532 Invalid, 2336 Unknown, 0 Unchecked, 31.71ms Time], IncrementalHoareTripleChecker [23 Valid, 2313 Invalid, 0 Unknown, 0 Unchecked, 13089.32ms Time] [2021-11-13 18:25:39,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3705 states. [2021-11-13 18:25:39,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3705 to 2569. [2021-11-13 18:25:39,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2569 states, 1495 states have (on average 2.0381270903010034) internal successors, (3047), 2550 states have internal predecessors, (3047), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 18:25:39,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2569 states to 2569 states and 3082 transitions. [2021-11-13 18:25:39,832 INFO L78 Accepts]: Start accepts. Automaton has 2569 states and 3082 transitions. Word has length 7 [2021-11-13 18:25:39,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:25:39,832 INFO L470 AbstractCegarLoop]: Abstraction has 2569 states and 3082 transitions. [2021-11-13 18:25:39,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:25:39,833 INFO L276 IsEmpty]: Start isEmpty. Operand 2569 states and 3082 transitions. [2021-11-13 18:25:39,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 18:25:39,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:25:39,834 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:25:39,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:25:40,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:25:40,051 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-13 18:25:40,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:25:40,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1456660511, now seen corresponding path program 1 times [2021-11-13 18:25:40,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:25:40,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [319398951] [2021-11-13 18:25:40,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:25:40,055 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:25:40,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:25:40,056 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:25:40,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 18:25:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:25:40,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:25:40,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:25:40,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:25:40,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:25:40,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:25:40,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:25:40,483 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:25:40,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [319398951] [2021-11-13 18:25:40,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [319398951] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:25:40,484 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:25:40,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 18:25:40,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53795570] [2021-11-13 18:25:40,485 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:25:40,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:25:40,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:25:40,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:25:40,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:25:40,490 INFO L87 Difference]: Start difference. First operand 2569 states and 3082 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:25:45,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:25:45,318 INFO L93 Difference]: Finished difference Result 3307 states and 3820 transitions. [2021-11-13 18:25:45,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:25:45,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-13 18:25:45,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:25:45,343 INFO L225 Difference]: With dead ends: 3307 [2021-11-13 18:25:45,343 INFO L226 Difference]: Without dead ends: 3307 [2021-11-13 18:25:45,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:25:45,347 INFO L933 BasicCegarLoop]: 2165 mSDtfsCounter, 1987 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 1481 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3904.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 2917 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.05ms SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4739.32ms IncrementalHoareTripleChecker+Time [2021-11-13 18:25:45,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1997 Valid, 2917 Invalid, 1583 Unknown, 0 Unchecked, 16.05ms Time], IncrementalHoareTripleChecker [102 Valid, 1481 Invalid, 0 Unknown, 0 Unchecked, 4739.32ms Time] [2021-11-13 18:25:45,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3307 states. [2021-11-13 18:25:45,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3307 to 2478. [2021-11-13 18:25:45,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2478 states, 1495 states have (on average 1.9545150501672242) internal successors, (2922), 2459 states have internal predecessors, (2922), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 18:25:45,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 2957 transitions. [2021-11-13 18:25:45,441 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 2957 transitions. Word has length 12 [2021-11-13 18:25:45,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:25:45,442 INFO L470 AbstractCegarLoop]: Abstraction has 2478 states and 2957 transitions. [2021-11-13 18:25:45,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:25:45,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 2957 transitions. [2021-11-13 18:25:45,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 18:25:45,443 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:25:45,443 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:25:45,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-13 18:25:45,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:25:45,671 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-13 18:25:45,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:25:45,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1456660512, now seen corresponding path program 1 times [2021-11-13 18:25:45,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:25:45,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877915443] [2021-11-13 18:25:45,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:25:45,673 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:25:45,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:25:45,675 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:25:45,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 18:25:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:25:45,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:25:45,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:25:46,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:25:46,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:25:46,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:25:46,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:25:46,173 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:25:46,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877915443] [2021-11-13 18:25:46,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877915443] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:25:46,175 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:25:46,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 18:25:46,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664388160] [2021-11-13 18:25:46,176 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:25:46,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:25:46,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:25:46,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:25:46,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:25:46,179 INFO L87 Difference]: Start difference. First operand 2478 states and 2957 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:25:57,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:25:57,739 INFO L93 Difference]: Finished difference Result 3433 states and 3848 transitions. [2021-11-13 18:25:57,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:25:57,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-13 18:25:57,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:25:57,766 INFO L225 Difference]: With dead ends: 3433 [2021-11-13 18:25:57,766 INFO L226 Difference]: Without dead ends: 3433 [2021-11-13 18:25:57,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:25:57,771 INFO L933 BasicCegarLoop]: 2495 mSDtfsCounter, 2798 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 1660 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10115.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2804 SdHoareTripleChecker+Valid, 3601 SdHoareTripleChecker+Invalid, 1691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.50ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11443.72ms IncrementalHoareTripleChecker+Time [2021-11-13 18:25:57,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2804 Valid, 3601 Invalid, 1691 Unknown, 0 Unchecked, 26.50ms Time], IncrementalHoareTripleChecker [31 Valid, 1660 Invalid, 0 Unknown, 0 Unchecked, 11443.72ms Time] [2021-11-13 18:25:57,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3433 states. [2021-11-13 18:25:57,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3433 to 2470. [2021-11-13 18:25:57,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2470 states, 1497 states have (on average 1.9385437541750168) internal successors, (2902), 2451 states have internal predecessors, (2902), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 18:25:57,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2470 states to 2470 states and 2937 transitions. [2021-11-13 18:25:57,864 INFO L78 Accepts]: Start accepts. Automaton has 2470 states and 2937 transitions. Word has length 12 [2021-11-13 18:25:57,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:25:57,865 INFO L470 AbstractCegarLoop]: Abstraction has 2470 states and 2937 transitions. [2021-11-13 18:25:57,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:25:57,866 INFO L276 IsEmpty]: Start isEmpty. Operand 2470 states and 2937 transitions. [2021-11-13 18:25:57,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-13 18:25:57,867 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:25:57,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:25:57,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:25:58,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:25:58,082 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr658REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-13 18:25:58,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:25:58,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1450909355, now seen corresponding path program 1 times [2021-11-13 18:25:58,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:25:58,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106254491] [2021-11-13 18:25:58,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:25:58,083 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:25:58,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:25:58,086 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:25:58,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 18:25:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:25:58,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:25:58,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:25:58,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:25:58,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:25:58,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:25:58,474 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:25:58,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106254491] [2021-11-13 18:25:58,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106254491] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:25:58,474 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:25:58,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 18:25:58,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521476145] [2021-11-13 18:25:58,475 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:25:58,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:25:58,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:25:58,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:25:58,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:25:58,477 INFO L87 Difference]: Start difference. First operand 2470 states and 2937 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:25:58,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:25:58,557 INFO L93 Difference]: Finished difference Result 2428 states and 2894 transitions. [2021-11-13 18:25:58,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:25:58,558 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-13 18:25:58,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:25:58,575 INFO L225 Difference]: With dead ends: 2428 [2021-11-13 18:25:58,575 INFO L226 Difference]: Without dead ends: 2428 [2021-11-13 18:25:58,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:25:58,576 INFO L933 BasicCegarLoop]: 2214 mSDtfsCounter, 2012 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2016 SdHoareTripleChecker+Valid, 3429 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.44ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.28ms IncrementalHoareTripleChecker+Time [2021-11-13 18:25:58,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2016 Valid, 3429 Invalid, 16 Unknown, 0 Unchecked, 5.44ms Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 29.28ms Time] [2021-11-13 18:25:58,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2428 states. [2021-11-13 18:25:58,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2428 to 2428. [2021-11-13 18:25:58,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2428 states, 1479 states have (on average 1.9330628803245435) internal successors, (2859), 2409 states have internal predecessors, (2859), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 18:25:58,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2428 states to 2428 states and 2894 transitions. [2021-11-13 18:25:58,647 INFO L78 Accepts]: Start accepts. Automaton has 2428 states and 2894 transitions. Word has length 15 [2021-11-13 18:25:58,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:25:58,648 INFO L470 AbstractCegarLoop]: Abstraction has 2428 states and 2894 transitions. [2021-11-13 18:25:58,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:25:58,649 INFO L276 IsEmpty]: Start isEmpty. Operand 2428 states and 2894 transitions. [2021-11-13 18:25:58,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-13 18:25:58,650 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:25:58,651 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:25:58,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 18:25:58,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:25:58,871 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr682REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-13 18:25:58,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:25:58,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1540536399, now seen corresponding path program 1 times [2021-11-13 18:25:58,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:25:58,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1623357592] [2021-11-13 18:25:58,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:25:58,873 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:25:58,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:25:58,875 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:25:58,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 18:25:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:25:59,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:25:59,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:25:59,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:25:59,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:25:59,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:25:59,243 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:25:59,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1623357592] [2021-11-13 18:25:59,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1623357592] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:25:59,244 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:25:59,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 18:25:59,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421784750] [2021-11-13 18:25:59,244 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:25:59,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:25:59,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:25:59,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:25:59,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:25:59,246 INFO L87 Difference]: Start difference. First operand 2428 states and 2894 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:25:59,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:25:59,413 INFO L93 Difference]: Finished difference Result 2407 states and 2866 transitions. [2021-11-13 18:25:59,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:25:59,415 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-13 18:25:59,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:25:59,435 INFO L225 Difference]: With dead ends: 2407 [2021-11-13 18:25:59,435 INFO L226 Difference]: Without dead ends: 2407 [2021-11-13 18:25:59,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:25:59,437 INFO L933 BasicCegarLoop]: 2169 mSDtfsCounter, 1944 mSDsluCounter, 3378 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1948 SdHoareTripleChecker+Valid, 5547 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.46ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 90.03ms IncrementalHoareTripleChecker+Time [2021-11-13 18:25:59,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1948 Valid, 5547 Invalid, 78 Unknown, 0 Unchecked, 12.46ms Time], IncrementalHoareTripleChecker [46 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 90.03ms Time] [2021-11-13 18:25:59,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2021-11-13 18:25:59,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 2406. [2021-11-13 18:25:59,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2406 states, 1471 states have (on average 1.9238613188307274) internal successors, (2830), 2387 states have internal predecessors, (2830), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 18:25:59,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2406 states to 2406 states and 2865 transitions. [2021-11-13 18:25:59,505 INFO L78 Accepts]: Start accepts. Automaton has 2406 states and 2865 transitions. Word has length 17 [2021-11-13 18:25:59,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:25:59,506 INFO L470 AbstractCegarLoop]: Abstraction has 2406 states and 2865 transitions. [2021-11-13 18:25:59,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:25:59,507 INFO L276 IsEmpty]: Start isEmpty. Operand 2406 states and 2865 transitions. [2021-11-13 18:25:59,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-13 18:25:59,509 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:25:59,509 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:25:59,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 18:25:59,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:25:59,725 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr334REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-13 18:25:59,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:25:59,727 INFO L85 PathProgramCache]: Analyzing trace with hash 192419436, now seen corresponding path program 1 times [2021-11-13 18:25:59,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:25:59,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1373191381] [2021-11-13 18:25:59,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:25:59,728 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:25:59,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:25:59,729 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:25:59,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 18:25:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:25:59,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:25:59,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:26:00,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:00,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:26:00,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:00,108 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:26:00,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1373191381] [2021-11-13 18:26:00,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1373191381] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:26:00,109 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:26:00,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 18:26:00,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144728462] [2021-11-13 18:26:00,110 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:26:00,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:26:00,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:26:00,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:26:00,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:26:00,112 INFO L87 Difference]: Start difference. First operand 2406 states and 2865 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:26:00,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:26:00,236 INFO L93 Difference]: Finished difference Result 3839 states and 4394 transitions. [2021-11-13 18:26:00,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:26:00,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-11-13 18:26:00,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:26:00,259 INFO L225 Difference]: With dead ends: 3839 [2021-11-13 18:26:00,259 INFO L226 Difference]: Without dead ends: 3839 [2021-11-13 18:26:00,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:26:00,261 INFO L933 BasicCegarLoop]: 3707 mSDtfsCounter, 4182 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4192 SdHoareTripleChecker+Valid, 5323 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.52ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.37ms IncrementalHoareTripleChecker+Time [2021-11-13 18:26:00,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4192 Valid, 5323 Invalid, 22 Unknown, 0 Unchecked, 10.52ms Time], IncrementalHoareTripleChecker [10 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 67.37ms Time] [2021-11-13 18:26:00,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3839 states. [2021-11-13 18:26:00,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3839 to 2328. [2021-11-13 18:26:00,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2328 states, 1417 states have (on average 1.9061397318278053) internal successors, (2701), 2309 states have internal predecessors, (2701), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 18:26:00,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2328 states to 2328 states and 2736 transitions. [2021-11-13 18:26:00,342 INFO L78 Accepts]: Start accepts. Automaton has 2328 states and 2736 transitions. Word has length 24 [2021-11-13 18:26:00,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:26:00,343 INFO L470 AbstractCegarLoop]: Abstraction has 2328 states and 2736 transitions. [2021-11-13 18:26:00,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:26:00,344 INFO L276 IsEmpty]: Start isEmpty. Operand 2328 states and 2736 transitions. [2021-11-13 18:26:00,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-13 18:26:00,345 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:26:00,345 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:26:00,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 18:26:00,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:26:00,558 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr16REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-13 18:26:00,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:26:00,559 INFO L85 PathProgramCache]: Analyzing trace with hash 47115756, now seen corresponding path program 1 times [2021-11-13 18:26:00,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:26:00,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1098959096] [2021-11-13 18:26:00,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:26:00,560 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:26:00,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:26:00,561 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:26:00,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 18:26:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:26:00,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:26:00,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:26:00,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:00,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:26:01,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:01,029 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:26:01,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1098959096] [2021-11-13 18:26:01,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1098959096] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:26:01,029 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:26:01,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 18:26:01,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065321246] [2021-11-13 18:26:01,030 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:26:01,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:26:01,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:26:01,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:26:01,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:26:01,031 INFO L87 Difference]: Start difference. First operand 2328 states and 2736 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:26:01,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:26:01,107 INFO L93 Difference]: Finished difference Result 3762 states and 4317 transitions. [2021-11-13 18:26:01,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:26:01,108 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-11-13 18:26:01,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:26:01,129 INFO L225 Difference]: With dead ends: 3762 [2021-11-13 18:26:01,129 INFO L226 Difference]: Without dead ends: 3762 [2021-11-13 18:26:01,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:26:01,130 INFO L933 BasicCegarLoop]: 3628 mSDtfsCounter, 2048 mSDsluCounter, 3160 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2058 SdHoareTripleChecker+Valid, 6788 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.04ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.70ms IncrementalHoareTripleChecker+Time [2021-11-13 18:26:01,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2058 Valid, 6788 Invalid, 12 Unknown, 0 Unchecked, 10.04ms Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 21.70ms Time] [2021-11-13 18:26:01,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3762 states. [2021-11-13 18:26:01,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3762 to 2286. [2021-11-13 18:26:01,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2286 states, 1399 states have (on average 1.899928520371694) internal successors, (2658), 2267 states have internal predecessors, (2658), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 18:26:01,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2286 states to 2286 states and 2693 transitions. [2021-11-13 18:26:01,191 INFO L78 Accepts]: Start accepts. Automaton has 2286 states and 2693 transitions. Word has length 24 [2021-11-13 18:26:01,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:26:01,191 INFO L470 AbstractCegarLoop]: Abstraction has 2286 states and 2693 transitions. [2021-11-13 18:26:01,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:26:01,191 INFO L276 IsEmpty]: Start isEmpty. Operand 2286 states and 2693 transitions. [2021-11-13 18:26:01,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-13 18:26:01,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:26:01,193 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:26:01,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-13 18:26:01,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:26:01,406 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr358REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-13 18:26:01,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:26:01,407 INFO L85 PathProgramCache]: Analyzing trace with hash 231511206, now seen corresponding path program 1 times [2021-11-13 18:26:01,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:26:01,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [972374829] [2021-11-13 18:26:01,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:26:01,408 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:26:01,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:26:01,409 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:26:01,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 18:26:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:26:01,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:26:01,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:26:01,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:01,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:26:01,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:01,944 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:26:01,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [972374829] [2021-11-13 18:26:01,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [972374829] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:26:01,944 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:26:01,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 18:26:01,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778227263] [2021-11-13 18:26:01,945 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:26:01,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:26:01,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:26:01,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:26:01,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:26:01,946 INFO L87 Difference]: Start difference. First operand 2286 states and 2693 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:26:02,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:26:02,133 INFO L93 Difference]: Finished difference Result 3720 states and 4224 transitions. [2021-11-13 18:26:02,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:26:02,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-11-13 18:26:02,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:26:02,152 INFO L225 Difference]: With dead ends: 3720 [2021-11-13 18:26:02,152 INFO L226 Difference]: Without dead ends: 3720 [2021-11-13 18:26:02,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:26:02,153 INFO L933 BasicCegarLoop]: 3576 mSDtfsCounter, 4028 mSDsluCounter, 5143 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4038 SdHoareTripleChecker+Valid, 8719 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.31ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 106.00ms IncrementalHoareTripleChecker+Time [2021-11-13 18:26:02,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4038 Valid, 8719 Invalid, 84 Unknown, 0 Unchecked, 14.31ms Time], IncrementalHoareTripleChecker [52 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 106.00ms Time] [2021-11-13 18:26:02,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3720 states. [2021-11-13 18:26:02,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3720 to 2248. [2021-11-13 18:26:02,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2248 states, 1375 states have (on average 1.8698181818181818) internal successors, (2571), 2229 states have internal predecessors, (2571), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 18:26:02,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2248 states to 2248 states and 2606 transitions. [2021-11-13 18:26:02,223 INFO L78 Accepts]: Start accepts. Automaton has 2248 states and 2606 transitions. Word has length 26 [2021-11-13 18:26:02,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:26:02,223 INFO L470 AbstractCegarLoop]: Abstraction has 2248 states and 2606 transitions. [2021-11-13 18:26:02,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:26:02,224 INFO L276 IsEmpty]: Start isEmpty. Operand 2248 states and 2606 transitions. [2021-11-13 18:26:02,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-13 18:26:02,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:26:02,225 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:26:02,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 18:26:02,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:26:02,441 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr40REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-13 18:26:02,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:26:02,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1966399834, now seen corresponding path program 1 times [2021-11-13 18:26:02,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:26:02,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2114613119] [2021-11-13 18:26:02,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:26:02,443 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:26:02,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:26:02,444 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:26:02,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 18:26:02,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:26:02,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:26:02,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:26:02,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:02,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:26:02,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:02,903 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:26:02,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2114613119] [2021-11-13 18:26:02,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2114613119] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:26:02,903 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:26:02,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 18:26:02,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661349468] [2021-11-13 18:26:02,904 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:26:02,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:26:02,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:26:02,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:26:02,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:26:02,907 INFO L87 Difference]: Start difference. First operand 2248 states and 2606 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:26:03,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:26:03,047 INFO L93 Difference]: Finished difference Result 3681 states and 4173 transitions. [2021-11-13 18:26:03,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:26:03,048 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-11-13 18:26:03,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:26:03,085 INFO L225 Difference]: With dead ends: 3681 [2021-11-13 18:26:03,085 INFO L226 Difference]: Without dead ends: 3681 [2021-11-13 18:26:03,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:26:03,086 INFO L933 BasicCegarLoop]: 3513 mSDtfsCounter, 1984 mSDsluCounter, 6597 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1994 SdHoareTripleChecker+Valid, 10110 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.31ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.56ms IncrementalHoareTripleChecker+Time [2021-11-13 18:26:03,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1994 Valid, 10110 Invalid, 64 Unknown, 0 Unchecked, 13.31ms Time], IncrementalHoareTripleChecker [32 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 66.56ms Time] [2021-11-13 18:26:03,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2021-11-13 18:26:03,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 2226. [2021-11-13 18:26:03,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2226 states, 1367 states have (on average 1.8595464520848572) internal successors, (2542), 2207 states have internal predecessors, (2542), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 18:26:03,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2226 states to 2226 states and 2577 transitions. [2021-11-13 18:26:03,143 INFO L78 Accepts]: Start accepts. Automaton has 2226 states and 2577 transitions. Word has length 26 [2021-11-13 18:26:03,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:26:03,144 INFO L470 AbstractCegarLoop]: Abstraction has 2226 states and 2577 transitions. [2021-11-13 18:26:03,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:26:03,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states and 2577 transitions. [2021-11-13 18:26:03,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 18:26:03,145 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:26:03,145 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:26:03,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 18:26:03,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:26:03,362 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr696REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-13 18:26:03,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:26:03,362 INFO L85 PathProgramCache]: Analyzing trace with hash -500295907, now seen corresponding path program 1 times [2021-11-13 18:26:03,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:26:03,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1284651241] [2021-11-13 18:26:03,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:26:03,363 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:26:03,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:26:03,364 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:26:03,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 18:26:03,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:26:03,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:26:03,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:26:03,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:26:03,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:03,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:26:03,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:03,882 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:26:03,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1284651241] [2021-11-13 18:26:03,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1284651241] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:26:03,883 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:26:03,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 18:26:03,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055957234] [2021-11-13 18:26:03,883 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:26:03,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:26:03,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:26:03,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:26:03,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:26:03,885 INFO L87 Difference]: Start difference. First operand 2226 states and 2577 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:26:08,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:26:08,791 INFO L93 Difference]: Finished difference Result 2678 states and 2940 transitions. [2021-11-13 18:26:08,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:26:08,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-13 18:26:08,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:26:08,799 INFO L225 Difference]: With dead ends: 2678 [2021-11-13 18:26:08,799 INFO L226 Difference]: Without dead ends: 2678 [2021-11-13 18:26:08,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:26:08,800 INFO L933 BasicCegarLoop]: 1247 mSDtfsCounter, 2729 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 1779 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4015.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2735 SdHoareTripleChecker+Valid, 2352 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.12ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4818.82ms IncrementalHoareTripleChecker+Time [2021-11-13 18:26:08,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2735 Valid, 2352 Invalid, 1800 Unknown, 0 Unchecked, 16.12ms Time], IncrementalHoareTripleChecker [21 Valid, 1779 Invalid, 0 Unknown, 0 Unchecked, 4818.82ms Time] [2021-11-13 18:26:08,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2021-11-13 18:26:08,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 2222. [2021-11-13 18:26:08,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2222 states, 1367 states have (on average 1.8566203365032918) internal successors, (2538), 2203 states have internal predecessors, (2538), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 18:26:08,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2222 states to 2222 states and 2573 transitions. [2021-11-13 18:26:08,859 INFO L78 Accepts]: Start accepts. Automaton has 2222 states and 2573 transitions. Word has length 31 [2021-11-13 18:26:08,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:26:08,859 INFO L470 AbstractCegarLoop]: Abstraction has 2222 states and 2573 transitions. [2021-11-13 18:26:08,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:26:08,860 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states and 2573 transitions. [2021-11-13 18:26:08,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 18:26:08,861 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:26:08,861 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:26:08,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 18:26:09,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:26:09,075 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr697REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-13 18:26:09,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:26:09,076 INFO L85 PathProgramCache]: Analyzing trace with hash -500295906, now seen corresponding path program 1 times [2021-11-13 18:26:09,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:26:09,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138971934] [2021-11-13 18:26:09,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:26:09,077 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:26:09,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:26:09,078 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:26:09,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 18:26:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:26:09,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:26:09,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:26:09,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:26:09,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:09,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:26:10,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:10,298 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:26:10,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138971934] [2021-11-13 18:26:10,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138971934] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:26:10,299 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:26:10,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:26:10,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018992114] [2021-11-13 18:26:10,300 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:26:10,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:26:10,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:26:10,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:26:10,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:26:10,302 INFO L87 Difference]: Start difference. First operand 2222 states and 2573 transitions. Second operand has 6 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:26:29,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:26:29,064 INFO L93 Difference]: Finished difference Result 3219 states and 3556 transitions. [2021-11-13 18:26:29,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 18:26:29,066 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-13 18:26:29,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:26:29,075 INFO L225 Difference]: With dead ends: 3219 [2021-11-13 18:26:29,075 INFO L226 Difference]: Without dead ends: 3219 [2021-11-13 18:26:29,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:26:29,077 INFO L933 BasicCegarLoop]: 1485 mSDtfsCounter, 4179 mSDsluCounter, 3090 mSDsCounter, 0 mSdLazyCounter, 3520 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16453.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4179 SdHoareTripleChecker+Valid, 4575 SdHoareTripleChecker+Invalid, 3544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.75ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 3520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18529.27ms IncrementalHoareTripleChecker+Time [2021-11-13 18:26:29,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4179 Valid, 4575 Invalid, 3544 Unknown, 0 Unchecked, 32.75ms Time], IncrementalHoareTripleChecker [24 Valid, 3520 Invalid, 0 Unknown, 0 Unchecked, 18529.27ms Time] [2021-11-13 18:26:29,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2021-11-13 18:26:29,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 2255. [2021-11-13 18:26:29,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 1401 states have (on average 1.8379728765167738) internal successors, (2575), 2236 states have internal predecessors, (2575), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 18:26:29,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 2610 transitions. [2021-11-13 18:26:29,127 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 2610 transitions. Word has length 31 [2021-11-13 18:26:29,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:26:29,128 INFO L470 AbstractCegarLoop]: Abstraction has 2255 states and 2610 transitions. [2021-11-13 18:26:29,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:26:29,129 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 2610 transitions. [2021-11-13 18:26:29,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-13 18:26:29,130 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:26:29,131 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:26:29,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 18:26:29,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:26:29,350 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr372REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-13 18:26:29,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:26:29,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1370503628, now seen corresponding path program 1 times [2021-11-13 18:26:29,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:26:29,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1192642440] [2021-11-13 18:26:29,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:26:29,353 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:26:29,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:26:29,355 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:26:29,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 18:26:29,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:26:29,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:26:29,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:26:29,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:26:29,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:29,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:26:30,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:30,077 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:26:30,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1192642440] [2021-11-13 18:26:30,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1192642440] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:26:30,077 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:26:30,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 18:26:30,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996808384] [2021-11-13 18:26:30,078 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:26:30,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:26:30,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:26:30,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:26:30,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:26:30,080 INFO L87 Difference]: Start difference. First operand 2255 states and 2610 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:26:38,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:26:38,241 INFO L93 Difference]: Finished difference Result 4711 states and 5277 transitions. [2021-11-13 18:26:38,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:26:38,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2021-11-13 18:26:38,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:26:38,255 INFO L225 Difference]: With dead ends: 4711 [2021-11-13 18:26:38,255 INFO L226 Difference]: Without dead ends: 4711 [2021-11-13 18:26:38,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:26:38,257 INFO L933 BasicCegarLoop]: 2262 mSDtfsCounter, 4669 mSDsluCounter, 2308 mSDsCounter, 0 mSdLazyCounter, 2977 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6778.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4679 SdHoareTripleChecker+Valid, 4570 SdHoareTripleChecker+Invalid, 3028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.26ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8017.20ms IncrementalHoareTripleChecker+Time [2021-11-13 18:26:38,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4679 Valid, 4570 Invalid, 3028 Unknown, 0 Unchecked, 27.26ms Time], IncrementalHoareTripleChecker [51 Valid, 2977 Invalid, 0 Unknown, 0 Unchecked, 8017.20ms Time] [2021-11-13 18:26:38,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4711 states. [2021-11-13 18:26:38,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4711 to 2252. [2021-11-13 18:26:38,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2252 states, 1401 states have (on average 1.8301213418986437) internal successors, (2564), 2233 states have internal predecessors, (2564), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 18:26:38,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2252 states to 2252 states and 2599 transitions. [2021-11-13 18:26:38,312 INFO L78 Accepts]: Start accepts. Automaton has 2252 states and 2599 transitions. Word has length 40 [2021-11-13 18:26:38,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:26:38,313 INFO L470 AbstractCegarLoop]: Abstraction has 2252 states and 2599 transitions. [2021-11-13 18:26:38,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:26:38,313 INFO L276 IsEmpty]: Start isEmpty. Operand 2252 states and 2599 transitions. [2021-11-13 18:26:38,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-13 18:26:38,314 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:26:38,314 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:26:38,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-13 18:26:38,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:26:38,530 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr373REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-13 18:26:38,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:26:38,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1370503627, now seen corresponding path program 1 times [2021-11-13 18:26:38,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:26:38,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219712155] [2021-11-13 18:26:38,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:26:38,532 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:26:38,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:26:38,533 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:26:38,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 18:26:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:26:38,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:26:38,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:26:38,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:26:39,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:39,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:26:39,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:39,795 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:26:39,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1219712155] [2021-11-13 18:26:39,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1219712155] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:26:39,796 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:26:39,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:26:39,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412305993] [2021-11-13 18:26:39,796 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:26:39,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:26:39,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:26:39,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:26:39,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:26:39,797 INFO L87 Difference]: Start difference. First operand 2252 states and 2599 transitions. Second operand has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:26:59,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:26:59,531 INFO L93 Difference]: Finished difference Result 4656 states and 5162 transitions. [2021-11-13 18:26:59,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 18:26:59,533 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2021-11-13 18:26:59,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:26:59,543 INFO L225 Difference]: With dead ends: 4656 [2021-11-13 18:26:59,543 INFO L226 Difference]: Without dead ends: 4656 [2021-11-13 18:26:59,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:26:59,545 INFO L933 BasicCegarLoop]: 2523 mSDtfsCounter, 6117 mSDsluCounter, 3447 mSDsCounter, 0 mSdLazyCounter, 3690 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16981.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6122 SdHoareTripleChecker+Valid, 5970 SdHoareTripleChecker+Invalid, 3724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.86ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19493.87ms IncrementalHoareTripleChecker+Time [2021-11-13 18:26:59,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6122 Valid, 5970 Invalid, 3724 Unknown, 0 Unchecked, 33.86ms Time], IncrementalHoareTripleChecker [34 Valid, 3690 Invalid, 0 Unknown, 0 Unchecked, 19493.87ms Time] [2021-11-13 18:26:59,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4656 states. [2021-11-13 18:26:59,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4656 to 2252. [2021-11-13 18:26:59,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2252 states, 1401 states have (on average 1.827266238401142) internal successors, (2560), 2233 states have internal predecessors, (2560), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 18:26:59,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2252 states to 2252 states and 2595 transitions. [2021-11-13 18:26:59,592 INFO L78 Accepts]: Start accepts. Automaton has 2252 states and 2595 transitions. Word has length 40 [2021-11-13 18:26:59,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:26:59,592 INFO L470 AbstractCegarLoop]: Abstraction has 2252 states and 2595 transitions. [2021-11-13 18:26:59,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:26:59,593 INFO L276 IsEmpty]: Start isEmpty. Operand 2252 states and 2595 transitions. [2021-11-13 18:26:59,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-13 18:26:59,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:26:59,594 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:26:59,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-13 18:26:59,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:26:59,808 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr54REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-13 18:26:59,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:26:59,809 INFO L85 PathProgramCache]: Analyzing trace with hash 937079220, now seen corresponding path program 1 times [2021-11-13 18:26:59,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:26:59,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1596723266] [2021-11-13 18:26:59,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:26:59,810 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:26:59,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:26:59,811 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:26:59,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 18:27:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:00,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:27:00,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:27:00,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:27:00,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:00,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:27:00,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:00,471 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:27:00,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1596723266] [2021-11-13 18:27:00,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1596723266] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:00,472 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:00,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 18:27:00,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069585269] [2021-11-13 18:27:00,473 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:00,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:27:00,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:27:00,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:27:00,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:27:00,474 INFO L87 Difference]: Start difference. First operand 2252 states and 2595 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:27:07,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:27:07,221 INFO L93 Difference]: Finished difference Result 4324 states and 4866 transitions. [2021-11-13 18:27:07,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:27:07,222 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2021-11-13 18:27:07,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:27:07,231 INFO L225 Difference]: With dead ends: 4324 [2021-11-13 18:27:07,231 INFO L226 Difference]: Without dead ends: 4324 [2021-11-13 18:27:07,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:27:07,233 INFO L933 BasicCegarLoop]: 2284 mSDtfsCounter, 4289 mSDsluCounter, 2115 mSDsCounter, 0 mSdLazyCounter, 2688 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5593.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4296 SdHoareTripleChecker+Valid, 4399 SdHoareTripleChecker+Invalid, 2731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.15ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6629.51ms IncrementalHoareTripleChecker+Time [2021-11-13 18:27:07,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4296 Valid, 4399 Invalid, 2731 Unknown, 0 Unchecked, 23.15ms Time], IncrementalHoareTripleChecker [43 Valid, 2688 Invalid, 0 Unknown, 0 Unchecked, 6629.51ms Time] [2021-11-13 18:27:07,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4324 states. [2021-11-13 18:27:07,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4324 to 2248. [2021-11-13 18:27:07,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2248 states, 1401 states have (on average 1.8244111349036403) internal successors, (2556), 2229 states have internal predecessors, (2556), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 18:27:07,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2248 states to 2248 states and 2591 transitions. [2021-11-13 18:27:07,295 INFO L78 Accepts]: Start accepts. Automaton has 2248 states and 2591 transitions. Word has length 40 [2021-11-13 18:27:07,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:27:07,296 INFO L470 AbstractCegarLoop]: Abstraction has 2248 states and 2591 transitions. [2021-11-13 18:27:07,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:27:07,296 INFO L276 IsEmpty]: Start isEmpty. Operand 2248 states and 2591 transitions. [2021-11-13 18:27:07,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-13 18:27:07,297 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:27:07,297 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:07,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-13 18:27:07,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:27:07,509 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr55REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-13 18:27:07,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:07,510 INFO L85 PathProgramCache]: Analyzing trace with hash 937079221, now seen corresponding path program 1 times [2021-11-13 18:27:07,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:27:07,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251960919] [2021-11-13 18:27:07,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:07,511 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:27:07,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:27:07,513 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:27:07,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-13 18:27:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:07,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:27:07,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:27:07,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:27:08,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:08,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:27:08,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:08,632 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:27:08,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251960919] [2021-11-13 18:27:08,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [251960919] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:08,632 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:08,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:27:08,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071884504] [2021-11-13 18:27:08,633 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:08,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:27:08,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:27:08,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:27:08,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:27:08,634 INFO L87 Difference]: Start difference. First operand 2248 states and 2591 transitions. Second operand has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:27:26,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:27:26,882 INFO L93 Difference]: Finished difference Result 4223 states and 4645 transitions. [2021-11-13 18:27:26,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:27:26,883 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2021-11-13 18:27:26,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:27:26,891 INFO L225 Difference]: With dead ends: 4223 [2021-11-13 18:27:26,891 INFO L226 Difference]: Without dead ends: 4223 [2021-11-13 18:27:26,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:27:26,893 INFO L933 BasicCegarLoop]: 2734 mSDtfsCounter, 5790 mSDsluCounter, 2651 mSDsCounter, 0 mSdLazyCounter, 3182 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15786.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5795 SdHoareTripleChecker+Valid, 5385 SdHoareTripleChecker+Invalid, 3219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.11ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 3182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18022.32ms IncrementalHoareTripleChecker+Time [2021-11-13 18:27:26,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5795 Valid, 5385 Invalid, 3219 Unknown, 0 Unchecked, 32.11ms Time], IncrementalHoareTripleChecker [37 Valid, 3182 Invalid, 0 Unknown, 0 Unchecked, 18022.32ms Time] [2021-11-13 18:27:26,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4223 states. [2021-11-13 18:27:26,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4223 to 2244. [2021-11-13 18:27:26,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2244 states, 1401 states have (on average 1.8215560314061385) internal successors, (2552), 2225 states have internal predecessors, (2552), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 18:27:26,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2244 states to 2244 states and 2587 transitions. [2021-11-13 18:27:26,946 INFO L78 Accepts]: Start accepts. Automaton has 2244 states and 2587 transitions. Word has length 40 [2021-11-13 18:27:26,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:27:26,946 INFO L470 AbstractCegarLoop]: Abstraction has 2244 states and 2587 transitions. [2021-11-13 18:27:26,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:27:26,947 INFO L276 IsEmpty]: Start isEmpty. Operand 2244 states and 2587 transitions. [2021-11-13 18:27:26,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-13 18:27:26,948 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:27:26,948 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:26,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-13 18:27:27,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:27:27,163 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr704REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-13 18:27:27,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:27,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1883921252, now seen corresponding path program 1 times [2021-11-13 18:27:27,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:27:27,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [132658130] [2021-11-13 18:27:27,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:27,165 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:27:27,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:27:27,166 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:27:27,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-13 18:27:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:27,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:27:27,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:27:27,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:27,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:27:27,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:27,757 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:27:27,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [132658130] [2021-11-13 18:27:27,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [132658130] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:27,757 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:27,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 18:27:27,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546475011] [2021-11-13 18:27:27,758 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:27,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:27:27,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:27:27,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:27:27,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:27:27,761 INFO L87 Difference]: Start difference. First operand 2244 states and 2587 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:27:27,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:27:27,825 INFO L93 Difference]: Finished difference Result 2238 states and 2573 transitions. [2021-11-13 18:27:27,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:27:27,826 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2021-11-13 18:27:27,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:27:27,830 INFO L225 Difference]: With dead ends: 2238 [2021-11-13 18:27:27,830 INFO L226 Difference]: Without dead ends: 2238 [2021-11-13 18:27:27,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:27:27,831 INFO L933 BasicCegarLoop]: 1999 mSDtfsCounter, 959 mSDsluCounter, 3028 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 5027 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.20ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.72ms IncrementalHoareTripleChecker+Time [2021-11-13 18:27:27,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [963 Valid, 5027 Invalid, 41 Unknown, 0 Unchecked, 4.20ms Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 38.72ms Time] [2021-11-13 18:27:27,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2238 states. [2021-11-13 18:27:27,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2238 to 2238. [2021-11-13 18:27:27,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2238 states, 1395 states have (on average 1.8193548387096774) internal successors, (2538), 2219 states have internal predecessors, (2538), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-13 18:27:27,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2238 states to 2238 states and 2573 transitions. [2021-11-13 18:27:27,873 INFO L78 Accepts]: Start accepts. Automaton has 2238 states and 2573 transitions. Word has length 44 [2021-11-13 18:27:27,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:27:27,873 INFO L470 AbstractCegarLoop]: Abstraction has 2238 states and 2573 transitions. [2021-11-13 18:27:27,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:27:27,874 INFO L276 IsEmpty]: Start isEmpty. Operand 2238 states and 2573 transitions. [2021-11-13 18:27:27,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-13 18:27:27,875 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:27:27,875 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:27,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-13 18:27:28,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:27:28,091 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr704REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-13 18:27:28,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:28,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1519568976, now seen corresponding path program 1 times [2021-11-13 18:27:28,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:27:28,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482314160] [2021-11-13 18:27:28,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:28,093 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:27:28,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:27:28,094 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:27:28,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-13 18:27:28,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:28,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:27:28,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:27:28,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:28,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:27:29,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:29,139 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:27:29,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482314160] [2021-11-13 18:27:29,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482314160] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:29,140 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:29,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 18:27:29,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119225693] [2021-11-13 18:27:29,140 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:29,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:27:29,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:27:29,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:27:29,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:27:29,147 INFO L87 Difference]: Start difference. First operand 2238 states and 2573 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:27:29,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:27:29,536 INFO L93 Difference]: Finished difference Result 3578 states and 4039 transitions. [2021-11-13 18:27:29,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:27:29,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2021-11-13 18:27:29,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:27:29,541 INFO L225 Difference]: With dead ends: 3578 [2021-11-13 18:27:29,541 INFO L226 Difference]: Without dead ends: 3578 [2021-11-13 18:27:29,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:27:29,542 INFO L933 BasicCegarLoop]: 2088 mSDtfsCounter, 1378 mSDsluCounter, 1846 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 296.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 3934 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.68ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 354.56ms IncrementalHoareTripleChecker+Time [2021-11-13 18:27:29,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1387 Valid, 3934 Invalid, 138 Unknown, 0 Unchecked, 5.68ms Time], IncrementalHoareTripleChecker [9 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 354.56ms Time] [2021-11-13 18:27:29,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3578 states. [2021-11-13 18:27:29,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3578 to 2957. [2021-11-13 18:27:29,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2957 states, 2110 states have (on average 1.7943127962085308) internal successors, (3786), 2931 states have internal predecessors, (3786), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:27:29,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2957 states to 2957 states and 3835 transitions. [2021-11-13 18:27:29,597 INFO L78 Accepts]: Start accepts. Automaton has 2957 states and 3835 transitions. Word has length 52 [2021-11-13 18:27:29,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:27:29,597 INFO L470 AbstractCegarLoop]: Abstraction has 2957 states and 3835 transitions. [2021-11-13 18:27:29,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:27:29,598 INFO L276 IsEmpty]: Start isEmpty. Operand 2957 states and 3835 transitions. [2021-11-13 18:27:29,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-13 18:27:29,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:27:29,598 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:29,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-13 18:27:29,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:27:29,799 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr437REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-13 18:27:29,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:29,800 INFO L85 PathProgramCache]: Analyzing trace with hash 2035581901, now seen corresponding path program 1 times [2021-11-13 18:27:29,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:27:29,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1504235131] [2021-11-13 18:27:29,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:29,801 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:27:29,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:27:29,803 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:27:29,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-13 18:27:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:30,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:27:30,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:27:30,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:30,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:27:30,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:30,430 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:27:30,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1504235131] [2021-11-13 18:27:30,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1504235131] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:30,431 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:30,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 18:27:30,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170131795] [2021-11-13 18:27:30,431 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:30,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:27:30,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:27:30,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:27:30,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:27:30,432 INFO L87 Difference]: Start difference. First operand 2957 states and 3835 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:27:30,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:27:30,549 INFO L93 Difference]: Finished difference Result 4107 states and 5051 transitions. [2021-11-13 18:27:30,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:27:30,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-11-13 18:27:30,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:27:30,557 INFO L225 Difference]: With dead ends: 4107 [2021-11-13 18:27:30,557 INFO L226 Difference]: Without dead ends: 4107 [2021-11-13 18:27:30,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:27:30,558 INFO L933 BasicCegarLoop]: 3052 mSDtfsCounter, 1953 mSDsluCounter, 4355 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1963 SdHoareTripleChecker+Valid, 7407 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.56ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.33ms IncrementalHoareTripleChecker+Time [2021-11-13 18:27:30,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1963 Valid, 7407 Invalid, 41 Unknown, 0 Unchecked, 9.56ms Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 42.33ms Time] [2021-11-13 18:27:30,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4107 states. [2021-11-13 18:27:30,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4107 to 2933. [2021-11-13 18:27:30,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2933 states, 2086 states have (on average 1.7957813998082455) internal successors, (3746), 2907 states have internal predecessors, (3746), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:27:30,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2933 states to 2933 states and 3795 transitions. [2021-11-13 18:27:30,615 INFO L78 Accepts]: Start accepts. Automaton has 2933 states and 3795 transitions. Word has length 55 [2021-11-13 18:27:30,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:27:30,616 INFO L470 AbstractCegarLoop]: Abstraction has 2933 states and 3795 transitions. [2021-11-13 18:27:30,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:27:30,616 INFO L276 IsEmpty]: Start isEmpty. Operand 2933 states and 3795 transitions. [2021-11-13 18:27:30,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-13 18:27:30,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:27:30,617 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:30,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-13 18:27:30,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:27:30,830 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr73REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-13 18:27:30,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:30,831 INFO L85 PathProgramCache]: Analyzing trace with hash -619632909, now seen corresponding path program 1 times [2021-11-13 18:27:30,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:27:30,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045370738] [2021-11-13 18:27:30,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:30,832 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:27:30,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:27:30,834 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:27:30,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-13 18:27:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:31,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:27:31,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:27:31,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:31,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:27:31,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:31,542 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:27:31,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045370738] [2021-11-13 18:27:31,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045370738] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:31,543 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:31,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 18:27:31,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571591010] [2021-11-13 18:27:31,543 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:31,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:27:31,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:27:31,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:27:31,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:27:31,545 INFO L87 Difference]: Start difference. First operand 2933 states and 3795 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:27:31,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:27:31,636 INFO L93 Difference]: Finished difference Result 3852 states and 4549 transitions. [2021-11-13 18:27:31,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:27:31,637 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2021-11-13 18:27:31,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:27:31,644 INFO L225 Difference]: With dead ends: 3852 [2021-11-13 18:27:31,644 INFO L226 Difference]: Without dead ends: 3852 [2021-11-13 18:27:31,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:27:31,645 INFO L933 BasicCegarLoop]: 3315 mSDtfsCounter, 1944 mSDsluCounter, 4668 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1954 SdHoareTripleChecker+Valid, 7983 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.00ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.83ms IncrementalHoareTripleChecker+Time [2021-11-13 18:27:31,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1954 Valid, 7983 Invalid, 41 Unknown, 0 Unchecked, 10.00ms Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 35.83ms Time] [2021-11-13 18:27:31,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3852 states. [2021-11-13 18:27:31,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3852 to 2921. [2021-11-13 18:27:31,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2921 states, 2074 states have (on average 1.7965284474445515) internal successors, (3726), 2895 states have internal predecessors, (3726), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:27:31,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2921 states to 2921 states and 3775 transitions. [2021-11-13 18:27:31,742 INFO L78 Accepts]: Start accepts. Automaton has 2921 states and 3775 transitions. Word has length 58 [2021-11-13 18:27:31,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:27:31,743 INFO L470 AbstractCegarLoop]: Abstraction has 2921 states and 3775 transitions. [2021-11-13 18:27:31,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:27:31,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2921 states and 3775 transitions. [2021-11-13 18:27:31,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-13 18:27:31,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:27:31,744 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:31,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-13 18:27:31,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:27:31,951 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-13 18:27:31,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:31,951 INFO L85 PathProgramCache]: Analyzing trace with hash -973745247, now seen corresponding path program 1 times [2021-11-13 18:27:31,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:27:31,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1493905088] [2021-11-13 18:27:31,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:31,952 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:27:31,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:27:31,954 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:27:31,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-13 18:27:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:32,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:27:32,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:27:32,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:27:32,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:27:32,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:27:32,450 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-13 18:27:32,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-13 18:27:32,510 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-13 18:27:32,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-13 18:27:32,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:32,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:27:32,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:32,817 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:27:32,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1493905088] [2021-11-13 18:27:32,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1493905088] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:32,817 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:32,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 18:27:32,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880650169] [2021-11-13 18:27:32,818 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:32,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:27:32,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:27:32,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:27:32,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:27:32,820 INFO L87 Difference]: Start difference. First operand 2921 states and 3775 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:27:35,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:27:35,470 INFO L93 Difference]: Finished difference Result 3026 states and 3886 transitions. [2021-11-13 18:27:35,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:27:35,472 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2021-11-13 18:27:35,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:27:35,475 INFO L225 Difference]: With dead ends: 3026 [2021-11-13 18:27:35,475 INFO L226 Difference]: Without dead ends: 3026 [2021-11-13 18:27:35,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:27:35,476 INFO L933 BasicCegarLoop]: 1890 mSDtfsCounter, 906 mSDsluCounter, 3745 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2215.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 5635 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.49ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2580.06ms IncrementalHoareTripleChecker+Time [2021-11-13 18:27:35,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [910 Valid, 5635 Invalid, 529 Unknown, 0 Unchecked, 9.49ms Time], IncrementalHoareTripleChecker [4 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 2580.06ms Time] [2021-11-13 18:27:35,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3026 states. [2021-11-13 18:27:35,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3026 to 2887. [2021-11-13 18:27:35,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2887 states, 2040 states have (on average 1.809313725490196) internal successors, (3691), 2861 states have internal predecessors, (3691), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:27:35,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2887 states to 2887 states and 3740 transitions. [2021-11-13 18:27:35,519 INFO L78 Accepts]: Start accepts. Automaton has 2887 states and 3740 transitions. Word has length 61 [2021-11-13 18:27:35,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:27:35,519 INFO L470 AbstractCegarLoop]: Abstraction has 2887 states and 3740 transitions. [2021-11-13 18:27:35,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:27:35,520 INFO L276 IsEmpty]: Start isEmpty. Operand 2887 states and 3740 transitions. [2021-11-13 18:27:35,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-13 18:27:35,521 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:27:35,521 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:35,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-11-13 18:27:35,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:27:35,760 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr437REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-13 18:27:35,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:35,761 INFO L85 PathProgramCache]: Analyzing trace with hash -463327871, now seen corresponding path program 1 times [2021-11-13 18:27:35,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:27:35,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1784062746] [2021-11-13 18:27:35,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:35,763 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:27:35,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:27:35,764 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:27:35,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-13 18:27:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:36,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:27:36,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:27:36,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:36,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:27:37,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:37,169 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:27:37,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1784062746] [2021-11-13 18:27:37,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1784062746] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:37,170 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:37,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 18:27:37,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246890798] [2021-11-13 18:27:37,170 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:37,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:27:37,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:27:37,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:27:37,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:27:37,172 INFO L87 Difference]: Start difference. First operand 2887 states and 3740 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:27:37,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:27:37,412 INFO L93 Difference]: Finished difference Result 4151 states and 5189 transitions. [2021-11-13 18:27:37,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:27:37,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2021-11-13 18:27:37,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:27:37,420 INFO L225 Difference]: With dead ends: 4151 [2021-11-13 18:27:37,420 INFO L226 Difference]: Without dead ends: 4151 [2021-11-13 18:27:37,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:27:37,421 INFO L933 BasicCegarLoop]: 2285 mSDtfsCounter, 1075 mSDsluCounter, 1875 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 177.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 4160 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.02ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 208.98ms IncrementalHoareTripleChecker+Time [2021-11-13 18:27:37,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1083 Valid, 4160 Invalid, 64 Unknown, 0 Unchecked, 5.02ms Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 208.98ms Time] [2021-11-13 18:27:37,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4151 states. [2021-11-13 18:27:37,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4151 to 3610. [2021-11-13 18:27:37,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3610 states, 2759 states have (on average 1.7767306995288148) internal successors, (4902), 3577 states have internal predecessors, (4902), 32 states have call successors, (32), 5 states have call predecessors, (32), 4 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-13 18:27:37,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 4965 transitions. [2021-11-13 18:27:37,491 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 4965 transitions. Word has length 63 [2021-11-13 18:27:37,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:27:37,491 INFO L470 AbstractCegarLoop]: Abstraction has 3610 states and 4965 transitions. [2021-11-13 18:27:37,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:27:37,492 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 4965 transitions. [2021-11-13 18:27:37,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-13 18:27:37,493 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:27:37,493 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:37,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-13 18:27:37,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:27:37,706 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr391REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-13 18:27:37,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:37,707 INFO L85 PathProgramCache]: Analyzing trace with hash 917765823, now seen corresponding path program 1 times [2021-11-13 18:27:37,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:27:37,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1520079664] [2021-11-13 18:27:37,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:37,708 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:27:37,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:27:37,711 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:27:37,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-13 18:27:38,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:38,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:27:38,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:27:38,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:27:38,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:27:39,255 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-13 18:27:39,256 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 27 treesize of output 29 [2021-11-13 18:27:39,263 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-13 18:27:39,263 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 26 treesize of output 22 [2021-11-13 18:27:39,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:39,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:27:45,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:45,039 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:27:45,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1520079664] [2021-11-13 18:27:45,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1520079664] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:45,039 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:45,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:27:45,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612371155] [2021-11-13 18:27:45,040 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:45,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:27:45,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:27:45,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:27:45,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-13 18:27:45,042 INFO L87 Difference]: Start difference. First operand 3610 states and 4965 transitions. Second operand has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:27:53,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:27:53,906 INFO L93 Difference]: Finished difference Result 3853 states and 5093 transitions. [2021-11-13 18:27:53,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:27:53,907 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2021-11-13 18:27:53,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:27:53,916 INFO L225 Difference]: With dead ends: 3853 [2021-11-13 18:27:53,916 INFO L226 Difference]: Without dead ends: 3853 [2021-11-13 18:27:53,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-13 18:27:53,917 INFO L933 BasicCegarLoop]: 1493 mSDtfsCounter, 2238 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7621.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2246 SdHoareTripleChecker+Valid, 2647 SdHoareTripleChecker+Invalid, 2749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.27ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1534 IncrementalHoareTripleChecker+Unchecked, 8776.05ms IncrementalHoareTripleChecker+Time [2021-11-13 18:27:53,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2246 Valid, 2647 Invalid, 2749 Unknown, 0 Unchecked, 18.27ms Time], IncrementalHoareTripleChecker [42 Valid, 1173 Invalid, 0 Unknown, 1534 Unchecked, 8776.05ms Time] [2021-11-13 18:27:53,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3853 states. [2021-11-13 18:27:53,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3853 to 3585. [2021-11-13 18:27:53,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3585 states, 2765 states have (on average 1.749005424954792) internal successors, (4836), 3552 states have internal predecessors, (4836), 32 states have call successors, (32), 5 states have call predecessors, (32), 4 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-13 18:27:54,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 4899 transitions. [2021-11-13 18:27:54,008 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 4899 transitions. Word has length 66 [2021-11-13 18:27:54,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:27:54,009 INFO L470 AbstractCegarLoop]: Abstraction has 3585 states and 4899 transitions. [2021-11-13 18:27:54,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:27:54,009 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 4899 transitions. [2021-11-13 18:27:54,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-13 18:27:54,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:27:54,010 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:54,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-13 18:27:54,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:27:54,220 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr73REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-13 18:27:54,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:54,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1144339135, now seen corresponding path program 1 times [2021-11-13 18:27:54,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:27:54,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225960921] [2021-11-13 18:27:54,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:54,222 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:27:54,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:27:54,223 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:27:54,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-13 18:27:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:54,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:27:54,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:27:54,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:27:54,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:27:55,636 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-13 18:27:55,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2021-11-13 18:27:55,644 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-13 18:27:55,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 21 [2021-11-13 18:27:55,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:55,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:28:00,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:28:00,798 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:28:00,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225960921] [2021-11-13 18:28:00,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1225960921] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:00,799 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:00,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:28:00,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866818054] [2021-11-13 18:28:00,800 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:00,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:28:00,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:28:00,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:28:00,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-13 18:28:00,802 INFO L87 Difference]: Start difference. First operand 3585 states and 4899 transitions. Second operand has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:28:11,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:28:11,518 INFO L93 Difference]: Finished difference Result 5328 states and 7188 transitions. [2021-11-13 18:28:11,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:28:11,519 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2021-11-13 18:28:11,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:28:11,533 INFO L225 Difference]: With dead ends: 5328 [2021-11-13 18:28:11,533 INFO L226 Difference]: Without dead ends: 5328 [2021-11-13 18:28:11,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-13 18:28:11,534 INFO L933 BasicCegarLoop]: 2110 mSDtfsCounter, 2424 mSDsluCounter, 2571 mSDsCounter, 0 mSdLazyCounter, 1506 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9175.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2432 SdHoareTripleChecker+Valid, 4681 SdHoareTripleChecker+Invalid, 4148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.35ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2601 IncrementalHoareTripleChecker+Unchecked, 10613.68ms IncrementalHoareTripleChecker+Time [2021-11-13 18:28:11,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2432 Valid, 4681 Invalid, 4148 Unknown, 0 Unchecked, 21.35ms Time], IncrementalHoareTripleChecker [41 Valid, 1506 Invalid, 0 Unknown, 2601 Unchecked, 10613.68ms Time] [2021-11-13 18:28:11,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5328 states. [2021-11-13 18:28:11,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5328 to 3555. [2021-11-13 18:28:11,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3555 states, 2767 states have (on average 1.7253342970726417) internal successors, (4774), 3522 states have internal predecessors, (4774), 32 states have call successors, (32), 5 states have call predecessors, (32), 4 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-13 18:28:11,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3555 states to 3555 states and 4837 transitions. [2021-11-13 18:28:11,603 INFO L78 Accepts]: Start accepts. Automaton has 3555 states and 4837 transitions. Word has length 66 [2021-11-13 18:28:11,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:28:11,603 INFO L470 AbstractCegarLoop]: Abstraction has 3555 states and 4837 transitions. [2021-11-13 18:28:11,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:28:11,604 INFO L276 IsEmpty]: Start isEmpty. Operand 3555 states and 4837 transitions. [2021-11-13 18:28:11,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-13 18:28:11,605 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:11,605 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:28:11,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-13 18:28:11,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:28:11,823 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr393REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-13 18:28:11,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:11,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1504698432, now seen corresponding path program 1 times [2021-11-13 18:28:11,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:28:11,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1357325633] [2021-11-13 18:28:11,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:11,825 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:28:11,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:28:11,826 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:28:11,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-13 18:28:12,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:12,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:28:12,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:28:12,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:28:12,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:28:12,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-13 18:28:12,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:28:12,907 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:28:12,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1357325633] [2021-11-13 18:28:12,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1357325633] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:12,907 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:12,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:28:12,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780757283] [2021-11-13 18:28:12,908 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:12,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:28:12,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:28:12,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:28:12,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:28:12,909 INFO L87 Difference]: Start difference. First operand 3555 states and 4837 transitions. Second operand has 6 states, 5 states have (on average 25.0) internal successors, (125), 6 states have internal predecessors, (125), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:28:18,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:28:18,436 INFO L93 Difference]: Finished difference Result 3552 states and 4819 transitions. [2021-11-13 18:28:18,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:28:18,437 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 25.0) internal successors, (125), 6 states have internal predecessors, (125), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2021-11-13 18:28:18,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:28:18,445 INFO L225 Difference]: With dead ends: 3552 [2021-11-13 18:28:18,445 INFO L226 Difference]: Without dead ends: 3552 [2021-11-13 18:28:18,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:28:18,446 INFO L933 BasicCegarLoop]: 1274 mSDtfsCounter, 1673 mSDsluCounter, 1052 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4657.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1683 SdHoareTripleChecker+Valid, 2326 SdHoareTripleChecker+Invalid, 1234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.93ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5461.14ms IncrementalHoareTripleChecker+Time [2021-11-13 18:28:18,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1683 Valid, 2326 Invalid, 1234 Unknown, 0 Unchecked, 11.93ms Time], IncrementalHoareTripleChecker [20 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 5461.14ms Time] [2021-11-13 18:28:18,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3552 states. [2021-11-13 18:28:18,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3552 to 3545. [2021-11-13 18:28:18,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3545 states, 2765 states have (on average 1.7193490054249547) internal successors, (4754), 3512 states have internal predecessors, (4754), 32 states have call successors, (32), 5 states have call predecessors, (32), 4 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-13 18:28:18,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 4817 transitions. [2021-11-13 18:28:18,489 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 4817 transitions. Word has length 68 [2021-11-13 18:28:18,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:28:18,489 INFO L470 AbstractCegarLoop]: Abstraction has 3545 states and 4817 transitions. [2021-11-13 18:28:18,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 25.0) internal successors, (125), 6 states have internal predecessors, (125), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:28:18,489 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 4817 transitions. [2021-11-13 18:28:18,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-13 18:28:18,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:18,491 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:28:18,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-13 18:28:18,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:28:18,692 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr396REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-13 18:28:18,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:18,692 INFO L85 PathProgramCache]: Analyzing trace with hash -101487020, now seen corresponding path program 1 times [2021-11-13 18:28:18,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:28:18,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [111781956] [2021-11-13 18:28:18,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:18,693 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:28:18,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:28:18,694 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:28:18,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-13 18:28:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:28:19,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:28:19,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:28:19,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-13 18:28:19,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-13 18:28:19,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:28:19,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:28:19,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:28:19,368 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:28:19,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [111781956] [2021-11-13 18:28:19,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [111781956] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:19,369 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:19,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 18:28:19,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267015571] [2021-11-13 18:28:19,370 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:19,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:28:19,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:28:19,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:28:19,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:28:19,372 INFO L87 Difference]: Start difference. First operand 3545 states and 4817 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:28:25,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:28:25,820 INFO L93 Difference]: Finished difference Result 3544 states and 4814 transitions. [2021-11-13 18:28:25,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:28:25,825 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2021-11-13 18:28:25,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:28:25,833 INFO L225 Difference]: With dead ends: 3544 [2021-11-13 18:28:25,834 INFO L226 Difference]: Without dead ends: 3544 [2021-11-13 18:28:25,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:28:25,835 INFO L933 BasicCegarLoop]: 1931 mSDtfsCounter, 4 mSDsluCounter, 3190 mSDsCounter, 0 mSdLazyCounter, 2608 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5420.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5121 SdHoareTripleChecker+Invalid, 2609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.75ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6339.95ms IncrementalHoareTripleChecker+Time [2021-11-13 18:28:25,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5121 Invalid, 2609 Unknown, 0 Unchecked, 16.75ms Time], IncrementalHoareTripleChecker [1 Valid, 2608 Invalid, 0 Unknown, 0 Unchecked, 6339.95ms Time] [2021-11-13 18:28:25,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3544 states. [2021-11-13 18:28:25,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3544 to 3544. [2021-11-13 18:28:25,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3544 states, 2765 states have (on average 1.7182640144665462) internal successors, (4751), 3511 states have internal predecessors, (4751), 32 states have call successors, (32), 5 states have call predecessors, (32), 4 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-13 18:28:25,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3544 states to 3544 states and 4814 transitions. [2021-11-13 18:28:25,880 INFO L78 Accepts]: Start accepts. Automaton has 3544 states and 4814 transitions. Word has length 71 [2021-11-13 18:28:25,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:28:25,881 INFO L470 AbstractCegarLoop]: Abstraction has 3544 states and 4814 transitions. [2021-11-13 18:28:25,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:28:25,881 INFO L276 IsEmpty]: Start isEmpty. Operand 3544 states and 4814 transitions. [2021-11-13 18:28:25,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-13 18:28:25,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:25,882 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:28:25,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-13 18:28:26,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:28:26,082 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr397REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-13 18:28:26,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:26,083 INFO L85 PathProgramCache]: Analyzing trace with hash -101487019, now seen corresponding path program 1 times [2021-11-13 18:28:26,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:28:26,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980519374] [2021-11-13 18:28:26,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:26,084 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:28:26,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:28:26,085 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:28:26,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-13 18:28:26,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:26,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:28:26,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:28:26,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:28:26,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-13 18:28:26,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-13 18:28:26,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-13 18:28:26,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-13 18:28:26,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:28:26,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:28:27,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:28:27,182 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:28:27,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980519374] [2021-11-13 18:28:27,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1980519374] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:27,183 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:27,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-13 18:28:27,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044184856] [2021-11-13 18:28:27,183 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:27,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:28:27,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:28:27,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:28:27,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:28:27,185 INFO L87 Difference]: Start difference. First operand 3544 states and 4814 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:28:46,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:28:46,520 INFO L93 Difference]: Finished difference Result 3543 states and 4811 transitions. [2021-11-13 18:28:46,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:28:46,522 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2021-11-13 18:28:46,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:28:46,526 INFO L225 Difference]: With dead ends: 3543 [2021-11-13 18:28:46,526 INFO L226 Difference]: Without dead ends: 3543 [2021-11-13 18:28:46,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:28:46,527 INFO L933 BasicCegarLoop]: 1931 mSDtfsCounter, 3 mSDsluCounter, 4259 mSDsCounter, 0 mSdLazyCounter, 3469 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17263.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6190 SdHoareTripleChecker+Invalid, 3471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.40ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19174.54ms IncrementalHoareTripleChecker+Time [2021-11-13 18:28:46,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6190 Invalid, 3471 Unknown, 0 Unchecked, 24.40ms Time], IncrementalHoareTripleChecker [2 Valid, 3469 Invalid, 0 Unknown, 0 Unchecked, 19174.54ms Time] [2021-11-13 18:28:46,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3543 states. [2021-11-13 18:28:46,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3543 to 3543. [2021-11-13 18:28:46,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3543 states, 2762 states have (on average 1.719044170890659) internal successors, (4748), 3510 states have internal predecessors, (4748), 32 states have call successors, (32), 5 states have call predecessors, (32), 4 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-13 18:28:46,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3543 states to 3543 states and 4811 transitions. [2021-11-13 18:28:46,577 INFO L78 Accepts]: Start accepts. Automaton has 3543 states and 4811 transitions. Word has length 71 [2021-11-13 18:28:46,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:28:46,578 INFO L470 AbstractCegarLoop]: Abstraction has 3543 states and 4811 transitions. [2021-11-13 18:28:46,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:28:46,578 INFO L276 IsEmpty]: Start isEmpty. Operand 3543 states and 4811 transitions. [2021-11-13 18:28:46,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-13 18:28:46,579 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:46,579 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:28:46,597 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-11-13 18:28:46,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:28:46,797 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr78REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-13 18:28:46,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:46,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1711524328, now seen corresponding path program 1 times [2021-11-13 18:28:46,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:28:46,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1669158594] [2021-11-13 18:28:46,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:46,798 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:28:46,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:28:46,800 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:28:46,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-13 18:28:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:47,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:28:47,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:28:47,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:28:47,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-13 18:28:47,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-13 18:28:47,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:28:47,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:28:47,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:28:47,390 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:28:47,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1669158594] [2021-11-13 18:28:47,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1669158594] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:47,391 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:47,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 18:28:47,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239950164] [2021-11-13 18:28:47,391 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:47,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:28:47,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:28:47,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:28:47,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:28:47,392 INFO L87 Difference]: Start difference. First operand 3543 states and 4811 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:28:53,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:28:53,113 INFO L93 Difference]: Finished difference Result 3542 states and 4809 transitions. [2021-11-13 18:28:53,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:28:53,114 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2021-11-13 18:28:53,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:28:53,118 INFO L225 Difference]: With dead ends: 3542 [2021-11-13 18:28:53,119 INFO L226 Difference]: Without dead ends: 3542 [2021-11-13 18:28:53,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:28:53,119 INFO L933 BasicCegarLoop]: 1929 mSDtfsCounter, 4 mSDsluCounter, 3187 mSDsCounter, 0 mSdLazyCounter, 2605 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4832.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5116 SdHoareTripleChecker+Invalid, 2606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.01ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5630.45ms IncrementalHoareTripleChecker+Time [2021-11-13 18:28:53,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5116 Invalid, 2606 Unknown, 0 Unchecked, 15.01ms Time], IncrementalHoareTripleChecker [1 Valid, 2605 Invalid, 0 Unknown, 0 Unchecked, 5630.45ms Time] [2021-11-13 18:28:53,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3542 states. [2021-11-13 18:28:53,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3542 to 3542. [2021-11-13 18:28:53,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3542 states, 2762 states have (on average 1.718320057929037) internal successors, (4746), 3509 states have internal predecessors, (4746), 32 states have call successors, (32), 5 states have call predecessors, (32), 4 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-13 18:28:53,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3542 states to 3542 states and 4809 transitions. [2021-11-13 18:28:53,172 INFO L78 Accepts]: Start accepts. Automaton has 3542 states and 4809 transitions. Word has length 71 [2021-11-13 18:28:53,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:28:53,172 INFO L470 AbstractCegarLoop]: Abstraction has 3542 states and 4809 transitions. [2021-11-13 18:28:53,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:28:53,172 INFO L276 IsEmpty]: Start isEmpty. Operand 3542 states and 4809 transitions. [2021-11-13 18:28:53,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-13 18:28:53,173 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:53,173 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:28:53,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-13 18:28:53,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:28:53,374 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr79REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-13 18:28:53,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:53,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1711524329, now seen corresponding path program 1 times [2021-11-13 18:28:53,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:28:53,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931512892] [2021-11-13 18:28:53,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:53,376 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:28:53,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:28:53,377 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:28:53,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-13 18:28:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:53,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:28:53,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:28:53,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:28:53,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-13 18:28:53,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-13 18:28:53,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-13 18:28:53,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-13 18:28:53,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:28:53,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:28:54,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:28:54,185 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:28:54,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1931512892] [2021-11-13 18:28:54,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1931512892] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:54,186 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:54,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-13 18:28:54,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763195236] [2021-11-13 18:28:54,187 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:54,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:28:54,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:28:54,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:28:54,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:28:54,188 INFO L87 Difference]: Start difference. First operand 3542 states and 4809 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:29:13,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:13,406 INFO L93 Difference]: Finished difference Result 3541 states and 4807 transitions. [2021-11-13 18:29:13,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:29:13,407 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2021-11-13 18:29:13,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:29:13,415 INFO L225 Difference]: With dead ends: 3541 [2021-11-13 18:29:13,416 INFO L226 Difference]: Without dead ends: 3541 [2021-11-13 18:29:13,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:29:13,417 INFO L933 BasicCegarLoop]: 1929 mSDtfsCounter, 4 mSDsluCounter, 4255 mSDsCounter, 0 mSdLazyCounter, 3465 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17167.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6184 SdHoareTripleChecker+Invalid, 3466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.29ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19051.60ms IncrementalHoareTripleChecker+Time [2021-11-13 18:29:13,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 6184 Invalid, 3466 Unknown, 0 Unchecked, 23.29ms Time], IncrementalHoareTripleChecker [1 Valid, 3465 Invalid, 0 Unknown, 0 Unchecked, 19051.60ms Time] [2021-11-13 18:29:13,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3541 states. [2021-11-13 18:29:13,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3541 to 3541. [2021-11-13 18:29:13,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3541 states, 2760 states have (on average 1.718840579710145) internal successors, (4744), 3508 states have internal predecessors, (4744), 32 states have call successors, (32), 5 states have call predecessors, (32), 4 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-13 18:29:13,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3541 states to 3541 states and 4807 transitions. [2021-11-13 18:29:13,469 INFO L78 Accepts]: Start accepts. Automaton has 3541 states and 4807 transitions. Word has length 71 [2021-11-13 18:29:13,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:29:13,470 INFO L470 AbstractCegarLoop]: Abstraction has 3541 states and 4807 transitions. [2021-11-13 18:29:13,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:29:13,471 INFO L276 IsEmpty]: Start isEmpty. Operand 3541 states and 4807 transitions. [2021-11-13 18:29:13,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-13 18:29:13,472 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:13,472 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:29:13,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-13 18:29:13,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:29:13,690 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr400REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-13 18:29:13,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:13,691 INFO L85 PathProgramCache]: Analyzing trace with hash 788046843, now seen corresponding path program 1 times [2021-11-13 18:29:13,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:29:13,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1450013564] [2021-11-13 18:29:13,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:29:13,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:29:13,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:29:13,693 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:29:13,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-13 18:29:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:14,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:29:14,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:29:14,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:29:14,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:29:14,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:29:14,507 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:29:14,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1450013564] [2021-11-13 18:29:14,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1450013564] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:29:14,507 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:29:14,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 18:29:14,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259666480] [2021-11-13 18:29:14,507 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:29:14,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:29:14,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:29:14,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:29:14,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:29:14,509 INFO L87 Difference]: Start difference. First operand 3541 states and 4807 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:29:14,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:14,647 INFO L93 Difference]: Finished difference Result 3551 states and 4823 transitions. [2021-11-13 18:29:14,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:29:14,648 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 79 [2021-11-13 18:29:14,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:29:14,657 INFO L225 Difference]: With dead ends: 3551 [2021-11-13 18:29:14,657 INFO L226 Difference]: Without dead ends: 3551 [2021-11-13 18:29:14,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:29:14,659 INFO L933 BasicCegarLoop]: 1927 mSDtfsCounter, 11 mSDsluCounter, 1926 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 79.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3853 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.20ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 93.37ms IncrementalHoareTripleChecker+Time [2021-11-13 18:29:14,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 3853 Invalid, 46 Unknown, 0 Unchecked, 3.20ms Time], IncrementalHoareTripleChecker [14 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 93.37ms Time] [2021-11-13 18:29:14,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3551 states. [2021-11-13 18:29:14,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3551 to 3551. [2021-11-13 18:29:14,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3551 states, 2768 states have (on average 1.7182080924855492) internal successors, (4756), 3517 states have internal predecessors, (4756), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (35), 28 states have call predecessors, (35), 31 states have call successors, (35) [2021-11-13 18:29:14,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3551 states to 3551 states and 4823 transitions. [2021-11-13 18:29:14,715 INFO L78 Accepts]: Start accepts. Automaton has 3551 states and 4823 transitions. Word has length 79 [2021-11-13 18:29:14,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:29:14,716 INFO L470 AbstractCegarLoop]: Abstraction has 3551 states and 4823 transitions. [2021-11-13 18:29:14,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:29:14,716 INFO L276 IsEmpty]: Start isEmpty. Operand 3551 states and 4823 transitions. [2021-11-13 18:29:14,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-13 18:29:14,718 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:14,718 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:29:14,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-13 18:29:14,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:29:14,936 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr400REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-13 18:29:14,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:14,936 INFO L85 PathProgramCache]: Analyzing trace with hash -545188869, now seen corresponding path program 1 times [2021-11-13 18:29:14,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:29:14,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [996830079] [2021-11-13 18:29:14,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:29:14,937 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:29:14,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:29:14,939 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:29:14,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-13 18:29:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:15,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:29:15,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:29:15,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:29:15,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:29:15,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:29:15,721 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:29:15,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [996830079] [2021-11-13 18:29:15,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [996830079] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:29:15,722 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:29:15,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-13 18:29:15,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631342710] [2021-11-13 18:29:15,722 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:29:15,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 18:29:15,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:29:15,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 18:29:15,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:29:15,724 INFO L87 Difference]: Start difference. First operand 3551 states and 4823 transitions. Second operand has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:29:16,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:16,288 INFO L93 Difference]: Finished difference Result 3565 states and 4847 transitions. [2021-11-13 18:29:16,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 18:29:16,289 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 81 [2021-11-13 18:29:16,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:29:16,297 INFO L225 Difference]: With dead ends: 3565 [2021-11-13 18:29:16,298 INFO L226 Difference]: Without dead ends: 3561 [2021-11-13 18:29:16,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-13 18:29:16,299 INFO L933 BasicCegarLoop]: 1929 mSDtfsCounter, 30 mSDsluCounter, 7696 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 267.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 9625 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.21ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 307.03ms IncrementalHoareTripleChecker+Time [2021-11-13 18:29:16,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 9625 Invalid, 152 Unknown, 0 Unchecked, 7.21ms Time], IncrementalHoareTripleChecker [35 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 307.03ms Time] [2021-11-13 18:29:16,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2021-11-13 18:29:16,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 3557. [2021-11-13 18:29:16,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 2774 states have (on average 1.7173756308579669) internal successors, (4764), 3523 states have internal predecessors, (4764), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (35), 28 states have call predecessors, (35), 31 states have call successors, (35) [2021-11-13 18:29:16,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 4831 transitions. [2021-11-13 18:29:16,355 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 4831 transitions. Word has length 81 [2021-11-13 18:29:16,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:29:16,355 INFO L470 AbstractCegarLoop]: Abstraction has 3557 states and 4831 transitions. [2021-11-13 18:29:16,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:29:16,356 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 4831 transitions. [2021-11-13 18:29:16,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-13 18:29:16,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:16,357 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:29:16,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-13 18:29:16,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:29:16,575 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr400REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1091 more)] === [2021-11-13 18:29:16,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:16,576 INFO L85 PathProgramCache]: Analyzing trace with hash -427953157, now seen corresponding path program 2 times [2021-11-13 18:29:16,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:29:16,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [699102072] [2021-11-13 18:29:16,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:29:16,577 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:29:16,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:29:16,578 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:29:16,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_283fd9cd-18c2-456d-87ab-f06fda58d4eb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-11-13 18:29:17,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 18:29:17,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:29:17,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:29:17,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:29:17,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:29:17,145 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:29:17,145 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:29:17,146 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:29:17,214 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-13 18:29:17,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-13 18:29:17,334 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 18:29:17,334 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 14 treesize of output 14 [2021-11-13 18:29:17,600 INFO L354 Elim1Store]: treesize reduction 229, result has 11.2 percent of original size [2021-11-13 18:29:17,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 66 treesize of output 86 [2021-11-13 18:29:23,232 INFO L354 Elim1Store]: treesize reduction 1963, result has 5.1 percent of original size [2021-11-13 18:29:23,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 39 case distinctions, treesize of input 118 treesize of output 150 [2021-11-13 18:29:33,523 INFO L354 Elim1Store]: treesize reduction 876, result has 0.1 percent of original size [2021-11-13 18:29:33,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 157 treesize of output 67 [2021-11-13 18:29:33,711 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-13 18:29:33,711 INFO L328 TraceCheckSpWp]: Computing backward predicates...