./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-2.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_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/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_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/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_0264d781-1de9-4521-adff-20fd1448967f/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 2c8bfc4504f1d1d767281638f115bf6ca8337de4769381189ae1d6a9b301298b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:30:59,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:30:59,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:30:59,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:30:59,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:30:59,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:30:59,331 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:30:59,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:30:59,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:30:59,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:30:59,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:30:59,350 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:30:59,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:30:59,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:30:59,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:30:59,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:30:59,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:30:59,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:30:59,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:30:59,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:30:59,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:30:59,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:30:59,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:30:59,386 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:30:59,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:30:59,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:30:59,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:30:59,392 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:30:59,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:30:59,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:30:59,394 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:30:59,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:30:59,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:30:59,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:30:59,398 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:30:59,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:30:59,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:30:59,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:30:59,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:30:59,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:30:59,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:30:59,402 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-13 17:30:59,426 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:30:59,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:30:59,427 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:30:59,427 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:30:59,427 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:30:59,428 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:30:59,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:30:59,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:30:59,429 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:30:59,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:30:59,429 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:30:59,430 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 17:30:59,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:30:59,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:30:59,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:30:59,430 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 17:30:59,430 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 17:30:59,431 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 17:30:59,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:30:59,431 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 17:30:59,431 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:30:59,431 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:30:59,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:30:59,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:30:59,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:30:59,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:30:59,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:30:59,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:30:59,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:30:59,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:30:59,433 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:30:59,433 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_0264d781-1de9-4521-adff-20fd1448967f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c8bfc4504f1d1d767281638f115bf6ca8337de4769381189ae1d6a9b301298b [2021-11-13 17:30:59,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:30:59,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:30:59,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:30:59,773 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:30:59,775 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:30:59,777 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-2.i [2021-11-13 17:30:59,853 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/data/c40fa2035/d71d4b5b562f41e48c25ce2658e0b8a2/FLAG6ef5f0458 [2021-11-13 17:31:00,481 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:31:00,498 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-2.i [2021-11-13 17:31:00,530 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/data/c40fa2035/d71d4b5b562f41e48c25ce2658e0b8a2/FLAG6ef5f0458 [2021-11-13 17:31:00,679 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/data/c40fa2035/d71d4b5b562f41e48c25ce2658e0b8a2 [2021-11-13 17:31:00,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:31:00,685 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 17:31:00,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:31:00,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:31:00,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:31:00,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:31:00" (1/1) ... [2021-11-13 17:31:00,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@505f8791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:00, skipping insertion in model container [2021-11-13 17:31:00,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:31:00" (1/1) ... [2021-11-13 17:31:00,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:31:00,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:31:01,321 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_0264d781-1de9-4521-adff-20fd1448967f/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-2.i[33021,33034] [2021-11-13 17:31:01,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:31:01,506 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 17:31:01,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@71e87880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:01, skipping insertion in model container [2021-11-13 17:31:01,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:31:01,507 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-13 17:31:01,509 INFO L158 Benchmark]: Toolchain (without parser) took 823.03ms. Allocated memory is still 104.9MB. Free memory was 64.5MB in the beginning and 66.6MB in the end (delta: -2.1MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2021-11-13 17:31:01,510 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 104.9MB. Free memory is still 83.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:31:01,511 INFO L158 Benchmark]: CACSL2BoogieTranslator took 819.59ms. Allocated memory is still 104.9MB. Free memory was 64.3MB in the beginning and 66.6MB in the end (delta: -2.3MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2021-11-13 17:31:01,513 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 104.9MB. Free memory is still 83.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 819.59ms. Allocated memory is still 104.9MB. Free memory was 64.3MB in the beginning and 66.6MB in the end (delta: -2.3MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 752]: 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_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/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_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/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_0264d781-1de9-4521-adff-20fd1448967f/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 2c8bfc4504f1d1d767281638f115bf6ca8337de4769381189ae1d6a9b301298b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:31:03,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:31:03,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:31:03,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:31:03,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:31:03,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:31:03,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:31:03,916 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:31:03,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:31:03,927 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:31:03,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:31:03,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:31:03,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:31:03,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:31:03,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:31:03,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:31:03,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:31:03,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:31:03,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:31:03,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:31:03,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:31:03,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:31:03,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:31:03,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:31:03,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:31:03,975 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:31:03,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:31:03,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:31:03,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:31:03,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:31:03,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:31:03,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:31:03,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:31:03,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:31:03,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:31:03,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:31:03,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:31:03,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:31:03,989 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:31:03,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:31:03,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:31:03,993 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-13 17:31:04,039 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:31:04,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:31:04,040 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:31:04,041 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:31:04,042 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:31:04,042 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:31:04,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:31:04,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:31:04,044 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:31:04,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:31:04,046 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:31:04,046 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 17:31:04,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:31:04,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:31:04,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:31:04,047 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 17:31:04,047 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 17:31:04,048 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 17:31:04,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:31:04,048 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 17:31:04,048 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 17:31:04,048 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 17:31:04,049 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:31:04,049 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:31:04,049 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:31:04,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:31:04,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:31:04,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:31:04,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:31:04,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:31:04,051 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 17:31:04,051 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 17:31:04,051 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:31:04,052 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 17:31:04,052 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_0264d781-1de9-4521-adff-20fd1448967f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c8bfc4504f1d1d767281638f115bf6ca8337de4769381189ae1d6a9b301298b [2021-11-13 17:31:04,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:31:04,498 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:31:04,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:31:04,504 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:31:04,505 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:31:04,506 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-2.i [2021-11-13 17:31:04,616 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/data/c781cf38c/698ee60809324b22a261d0fa2a6b14d8/FLAG11a7435ba [2021-11-13 17:31:05,313 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:31:05,314 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-2.i [2021-11-13 17:31:05,336 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/data/c781cf38c/698ee60809324b22a261d0fa2a6b14d8/FLAG11a7435ba [2021-11-13 17:31:05,526 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/data/c781cf38c/698ee60809324b22a261d0fa2a6b14d8 [2021-11-13 17:31:05,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:31:05,529 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 17:31:05,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:31:05,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:31:05,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:31:05,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:31:05" (1/1) ... [2021-11-13 17:31:05,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a3f0c14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:05, skipping insertion in model container [2021-11-13 17:31:05,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:31:05" (1/1) ... [2021-11-13 17:31:05,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:31:05,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:31:06,115 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_0264d781-1de9-4521-adff-20fd1448967f/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-2.i[33021,33034] [2021-11-13 17:31:06,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:31:06,332 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 17:31:06,345 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:31:06,368 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_0264d781-1de9-4521-adff-20fd1448967f/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-2.i[33021,33034] [2021-11-13 17:31:06,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:31:06,520 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:31:06,553 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_0264d781-1de9-4521-adff-20fd1448967f/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-2.i[33021,33034] [2021-11-13 17:31:06,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:31:06,760 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:31:06,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:06 WrapperNode [2021-11-13 17:31:06,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:31:06,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:31:06,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:31:06,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:31:06,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:06" (1/1) ... [2021-11-13 17:31:06,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:06" (1/1) ... [2021-11-13 17:31:06,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:06" (1/1) ... [2021-11-13 17:31:06,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:06" (1/1) ... [2021-11-13 17:31:06,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:06" (1/1) ... [2021-11-13 17:31:06,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:06" (1/1) ... [2021-11-13 17:31:06,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:06" (1/1) ... [2021-11-13 17:31:06,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:31:06,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:31:06,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:31:06,990 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:31:06,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:06" (1/1) ... [2021-11-13 17:31:07,009 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:31:07,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:31:07,035 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:31:07,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:31:07,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-13 17:31:07,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:31:07,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 17:31:07,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-13 17:31:07,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-13 17:31:07,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-13 17:31:07,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-13 17:31:07,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-13 17:31:07,090 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-13 17:31:07,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 17:31:07,091 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-13 17:31:07,091 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-13 17:31:07,092 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 17:31:07,092 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-13 17:31:07,092 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-13 17:31:07,092 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-13 17:31:07,092 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-13 17:31:07,092 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-13 17:31:07,093 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-13 17:31:07,093 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-13 17:31:07,093 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-13 17:31:07,093 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-13 17:31:07,093 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-13 17:31:07,094 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-13 17:31:07,094 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-13 17:31:07,094 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-13 17:31:07,094 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-13 17:31:07,094 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-13 17:31:07,094 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-13 17:31:07,095 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-13 17:31:07,095 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-13 17:31:07,095 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-13 17:31:07,095 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-13 17:31:07,095 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-13 17:31:07,096 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-13 17:31:07,096 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-13 17:31:07,097 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-13 17:31:07,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-13 17:31:07,098 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-13 17:31:07,098 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-13 17:31:07,098 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-13 17:31:07,098 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-13 17:31:07,098 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-13 17:31:07,099 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-13 17:31:07,099 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-13 17:31:07,099 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-13 17:31:07,099 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-13 17:31:07,099 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-13 17:31:07,100 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-13 17:31:07,100 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-13 17:31:07,100 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-13 17:31:07,100 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-13 17:31:07,100 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-13 17:31:07,101 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-13 17:31:07,101 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-13 17:31:07,101 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-13 17:31:07,102 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-13 17:31:07,103 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-13 17:31:07,103 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-13 17:31:07,104 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-13 17:31:07,105 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-13 17:31:07,105 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-13 17:31:07,105 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-13 17:31:07,105 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-13 17:31:07,106 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-13 17:31:07,106 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-13 17:31:07,106 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-13 17:31:07,107 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-13 17:31:07,107 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-13 17:31:07,107 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-13 17:31:07,107 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-13 17:31:07,107 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-13 17:31:07,107 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-13 17:31:07,108 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-13 17:31:07,108 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-13 17:31:07,108 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-13 17:31:07,109 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-13 17:31:07,109 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-13 17:31:07,109 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-13 17:31:07,109 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-13 17:31:07,109 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-13 17:31:07,110 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-13 17:31:07,110 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-13 17:31:07,110 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-13 17:31:07,110 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-13 17:31:07,110 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-13 17:31:07,110 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-13 17:31:07,111 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-13 17:31:07,111 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-13 17:31:07,111 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-13 17:31:07,111 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-13 17:31:07,111 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-13 17:31:07,111 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-13 17:31:07,112 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-13 17:31:07,112 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-13 17:31:07,112 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-13 17:31:07,112 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-13 17:31:07,113 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-13 17:31:07,113 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-13 17:31:07,113 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-13 17:31:07,113 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-13 17:31:07,113 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-13 17:31:07,114 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-13 17:31:07,114 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-13 17:31:07,114 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-13 17:31:07,114 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-13 17:31:07,114 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-13 17:31:07,114 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-13 17:31:07,115 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-13 17:31:07,115 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-13 17:31:07,115 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-13 17:31:07,115 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-13 17:31:07,115 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-13 17:31:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-13 17:31:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-13 17:31:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-13 17:31:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-13 17:31:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-13 17:31:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-13 17:31:07,120 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-13 17:31:07,121 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-13 17:31:07,121 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-13 17:31:07,122 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-13 17:31:07,122 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-13 17:31:07,123 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-13 17:31:07,123 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-13 17:31:07,124 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-13 17:31:07,124 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-13 17:31:07,130 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-13 17:31:07,130 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-13 17:31:07,130 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-13 17:31:07,130 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-13 17:31:07,131 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-13 17:31:07,131 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-13 17:31:07,131 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-13 17:31:07,131 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-13 17:31:07,131 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-13 17:31:07,131 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-13 17:31:07,131 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-13 17:31:07,131 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-13 17:31:07,131 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-13 17:31:07,131 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-13 17:31:07,132 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-13 17:31:07,132 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-13 17:31:07,132 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-13 17:31:07,132 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-13 17:31:07,132 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-13 17:31:07,132 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-13 17:31:07,132 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-13 17:31:07,132 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-13 17:31:07,132 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-13 17:31:07,132 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-13 17:31:07,132 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-13 17:31:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-13 17:31:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-13 17:31:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-13 17:31:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-13 17:31:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-13 17:31:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-13 17:31:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-13 17:31:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-13 17:31:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-13 17:31:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-13 17:31:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-13 17:31:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-13 17:31:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-13 17:31:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-13 17:31:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-13 17:31:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-13 17:31:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-13 17:31:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-13 17:31:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-13 17:31:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-13 17:31:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-13 17:31:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-13 17:31:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:31:07,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 17:31:07,136 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-13 17:31:07,136 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-13 17:31:07,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 17:31:07,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 17:31:07,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 17:31:07,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 17:31:07,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 17:31:07,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 17:31:07,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:31:07,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 17:31:07,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-13 17:31:07,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 17:31:07,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:31:07,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 17:31:07,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 17:31:07,730 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-13 17:31:13,996 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:31:13,997 INFO L299 CfgBuilder]: Removed 69 assume(true) statements. [2021-11-13 17:31:14,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:31:14 BoogieIcfgContainer [2021-11-13 17:31:14,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:31:14,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:31:14,003 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:31:14,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:31:14,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:31:05" (1/3) ... [2021-11-13 17:31:14,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4692a175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:31:14, skipping insertion in model container [2021-11-13 17:31:14,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:06" (2/3) ... [2021-11-13 17:31:14,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4692a175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:31:14, skipping insertion in model container [2021-11-13 17:31:14,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:31:14" (3/3) ... [2021-11-13 17:31:14,010 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test4-2.i [2021-11-13 17:31:14,015 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:31:14,016 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 753 error locations. [2021-11-13 17:31:14,066 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:31:14,074 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 17:31:14,074 INFO L340 AbstractCegarLoop]: Starting to check reachability of 753 error locations. [2021-11-13 17:31:14,139 INFO L276 IsEmpty]: Start isEmpty. Operand has 1481 states, 709 states have (on average 2.2637517630465442) internal successors, (1605), 1466 states have internal predecessors, (1605), 19 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-13 17:31:14,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-13 17:31:14,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:14,148 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:14,149 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-13 17:31:14,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:14,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1877376258, now seen corresponding path program 1 times [2021-11-13 17:31:14,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:31:14,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838604507] [2021-11-13 17:31:14,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:14,170 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:31:14,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:31:14,173 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:31:14,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 17:31:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:14,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 17:31:14,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:31:14,522 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 17:31:14,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:31:14,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:14,551 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:31:14,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [838604507] [2021-11-13 17:31:14,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [838604507] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:14,552 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:14,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 17:31:14,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932814017] [2021-11-13 17:31:14,555 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:14,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 17:31:14,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:31:14,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 17:31:14,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 17:31:14,605 INFO L87 Difference]: Start difference. First operand has 1481 states, 709 states have (on average 2.2637517630465442) internal successors, (1605), 1466 states have internal predecessors, (1605), 19 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:31:14,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:14,801 INFO L93 Difference]: Finished difference Result 1463 states and 1548 transitions. [2021-11-13 17:31:14,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 17:31:14,816 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-13 17:31:14,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:14,866 INFO L225 Difference]: With dead ends: 1463 [2021-11-13 17:31:14,866 INFO L226 Difference]: Without dead ends: 1460 [2021-11-13 17:31:14,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 17:31:14,876 INFO L933 BasicCegarLoop]: 1548 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.38ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:14,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1548 Invalid, 0 Unknown, 0 Unchecked, 28.38ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 17:31:14,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2021-11-13 17:31:15,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1460. [2021-11-13 17:31:15,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 700 states have (on average 2.1542857142857144) internal successors, (1508), 1446 states have internal predecessors, (1508), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-13 17:31:15,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 1545 transitions. [2021-11-13 17:31:15,022 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 1545 transitions. Word has length 9 [2021-11-13 17:31:15,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:15,022 INFO L470 AbstractCegarLoop]: Abstraction has 1460 states and 1545 transitions. [2021-11-13 17:31:15,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:31:15,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 1545 transitions. [2021-11-13 17:31:15,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-13 17:31:15,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:15,024 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:15,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-13 17:31:15,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:31:15,249 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-13 17:31:15,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:15,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1877376196, now seen corresponding path program 1 times [2021-11-13 17:31:15,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:31:15,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934086134] [2021-11-13 17:31:15,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:15,251 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:31:15,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:31:15,252 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:31:15,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 17:31:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:15,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:31:15,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:31:15,540 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 17:31:15,565 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 17:31:15,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:31:15,616 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 17:31:15,616 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:31:15,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [934086134] [2021-11-13 17:31:15,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [934086134] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:15,621 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:15,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 17:31:15,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930571967] [2021-11-13 17:31:15,622 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:15,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:31:15,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:31:15,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:31:15,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:31:15,626 INFO L87 Difference]: Start difference. First operand 1460 states and 1545 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:31:18,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:18,625 INFO L93 Difference]: Finished difference Result 1497 states and 1595 transitions. [2021-11-13 17:31:18,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:31:18,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-13 17:31:18,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:18,634 INFO L225 Difference]: With dead ends: 1497 [2021-11-13 17:31:18,635 INFO L226 Difference]: Without dead ends: 1497 [2021-11-13 17:31:18,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:31:18,636 INFO L933 BasicCegarLoop]: 817 mSDtfsCounter, 1137 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2353.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.99ms SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2871.82ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:18,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1144 Valid, 1069 Invalid, 927 Unknown, 0 Unchecked, 21.99ms Time], IncrementalHoareTripleChecker [105 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 2871.82ms Time] [2021-11-13 17:31:18,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2021-11-13 17:31:18,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1443. [2021-11-13 17:31:18,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 776 states have (on average 1.9974226804123711) internal successors, (1550), 1429 states have internal predecessors, (1550), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-13 17:31:18,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 1587 transitions. [2021-11-13 17:31:18,708 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 1587 transitions. Word has length 9 [2021-11-13 17:31:18,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:18,708 INFO L470 AbstractCegarLoop]: Abstraction has 1443 states and 1587 transitions. [2021-11-13 17:31:18,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:31:18,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 1587 transitions. [2021-11-13 17:31:18,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-13 17:31:18,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:18,709 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:18,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-13 17:31:18,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:31:18,921 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-13 17:31:18,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:18,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1877376195, now seen corresponding path program 1 times [2021-11-13 17:31:18,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:31:18,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339443499] [2021-11-13 17:31:18,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:18,923 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:31:18,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:31:18,924 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:31:18,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 17:31:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:19,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:31:19,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:31:19,134 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 17:31:19,159 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 17:31:19,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:31:19,246 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 17:31:19,246 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:31:19,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [339443499] [2021-11-13 17:31:19,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [339443499] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:19,247 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:19,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 17:31:19,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430168565] [2021-11-13 17:31:19,247 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:19,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:31:19,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:31:19,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:31:19,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:31:19,249 INFO L87 Difference]: Start difference. First operand 1443 states and 1587 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:31:25,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:25,142 INFO L93 Difference]: Finished difference Result 1797 states and 1962 transitions. [2021-11-13 17:31:25,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:31:25,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-13 17:31:25,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:25,153 INFO L225 Difference]: With dead ends: 1797 [2021-11-13 17:31:25,153 INFO L226 Difference]: Without dead ends: 1797 [2021-11-13 17:31:25,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:31:25,155 INFO L933 BasicCegarLoop]: 1148 mSDtfsCounter, 1097 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5055.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.47ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5796.16ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:25,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1100 Valid, 1754 Invalid, 1036 Unknown, 0 Unchecked, 19.47ms Time], IncrementalHoareTripleChecker [28 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 5796.16ms Time] [2021-11-13 17:31:25,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2021-11-13 17:31:25,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1599. [2021-11-13 17:31:25,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 942 states have (on average 1.970276008492569) internal successors, (1856), 1585 states have internal predecessors, (1856), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-13 17:31:25,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 1893 transitions. [2021-11-13 17:31:25,206 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 1893 transitions. Word has length 9 [2021-11-13 17:31:25,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:25,207 INFO L470 AbstractCegarLoop]: Abstraction has 1599 states and 1893 transitions. [2021-11-13 17:31:25,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:31:25,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 1893 transitions. [2021-11-13 17:31:25,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-13 17:31:25,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:25,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:25,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 17:31:25,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:31:25,423 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr640REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-13 17:31:25,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:25,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1932567471, now seen corresponding path program 1 times [2021-11-13 17:31:25,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:31:25,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1218496826] [2021-11-13 17:31:25,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:25,425 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:31:25,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:31:25,426 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:31:25,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 17:31:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:25,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:31:25,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:31:25,626 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 17:31:25,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:31:25,660 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 17:31:25,661 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:31:25,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1218496826] [2021-11-13 17:31:25,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1218496826] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:25,668 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:25,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 17:31:25,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240967841] [2021-11-13 17:31:25,669 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:25,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:31:25,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:31:25,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:31:25,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:31:25,671 INFO L87 Difference]: Start difference. First operand 1599 states and 1893 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:31:25,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:25,839 INFO L93 Difference]: Finished difference Result 2944 states and 3501 transitions. [2021-11-13 17:31:25,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:31:25,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-11-13 17:31:25,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:25,856 INFO L225 Difference]: With dead ends: 2944 [2021-11-13 17:31:25,856 INFO L226 Difference]: Without dead ends: 2944 [2021-11-13 17:31:25,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:31:25,858 INFO L933 BasicCegarLoop]: 1499 mSDtfsCounter, 2286 mSDsluCounter, 1722 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2298 SdHoareTripleChecker+Valid, 3221 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.99ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 89.70ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:25,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2298 Valid, 3221 Invalid, 19 Unknown, 0 Unchecked, 10.99ms Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 89.70ms Time] [2021-11-13 17:31:25,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2021-11-13 17:31:25,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 2415. [2021-11-13 17:31:25,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2415 states, 1758 states have (on average 1.963594994311718) internal successors, (3452), 2395 states have internal predecessors, (3452), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 17:31:25,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2415 states to 2415 states and 3501 transitions. [2021-11-13 17:31:25,937 INFO L78 Accepts]: Start accepts. Automaton has 2415 states and 3501 transitions. Word has length 10 [2021-11-13 17:31:25,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:25,937 INFO L470 AbstractCegarLoop]: Abstraction has 2415 states and 3501 transitions. [2021-11-13 17:31:25,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:31:25,938 INFO L276 IsEmpty]: Start isEmpty. Operand 2415 states and 3501 transitions. [2021-11-13 17:31:25,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-13 17:31:25,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:25,939 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:25,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-13 17:31:26,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:31:26,150 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr4REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-13 17:31:26,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:26,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1315601158, now seen corresponding path program 1 times [2021-11-13 17:31:26,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:31:26,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126040323] [2021-11-13 17:31:26,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:26,151 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:31:26,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:31:26,152 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:31:26,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 17:31:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:26,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:31:26,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:31:26,424 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 17:31:26,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:31:26,466 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 17:31:26,467 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:31:26,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2126040323] [2021-11-13 17:31:26,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2126040323] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:26,467 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:26,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 17:31:26,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983631331] [2021-11-13 17:31:26,468 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:26,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:31:26,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:31:26,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:31:26,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:31:26,469 INFO L87 Difference]: Start difference. First operand 2415 states and 3501 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 17:31:26,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:26,535 INFO L93 Difference]: Finished difference Result 2355 states and 3415 transitions. [2021-11-13 17:31:26,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:31:26,535 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 17:31:26,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:26,553 INFO L225 Difference]: With dead ends: 2355 [2021-11-13 17:31:26,555 INFO L226 Difference]: Without dead ends: 2355 [2021-11-13 17:31:26,555 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 17:31:26,558 INFO L933 BasicCegarLoop]: 1394 mSDtfsCounter, 1325 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1332 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.10ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.53ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:26,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1332 Valid, 1538 Invalid, 12 Unknown, 0 Unchecked, 6.10ms Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 17.53ms Time] [2021-11-13 17:31:26,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2355 states. [2021-11-13 17:31:26,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2355 to 2355. [2021-11-13 17:31:26,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2355 states, 1722 states have (on average 1.9547038327526132) internal successors, (3366), 2335 states have internal predecessors, (3366), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 17:31:26,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 3415 transitions. [2021-11-13 17:31:26,637 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 3415 transitions. Word has length 15 [2021-11-13 17:31:26,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:26,637 INFO L470 AbstractCegarLoop]: Abstraction has 2355 states and 3415 transitions. [2021-11-13 17:31:26,638 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 17:31:26,638 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 3415 transitions. [2021-11-13 17:31:26,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-13 17:31:26,639 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:26,639 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 17:31:26,650 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-13 17:31:26,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:31:26,850 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr28REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-13 17:31:26,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:26,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1572327136, now seen corresponding path program 1 times [2021-11-13 17:31:26,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:31:26,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436820882] [2021-11-13 17:31:26,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:26,852 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:31:26,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:31:26,853 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:31:26,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 17:31:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:27,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:31:27,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:31:27,151 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 17:31:27,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:31:27,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:27,198 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:31:27,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [436820882] [2021-11-13 17:31:27,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [436820882] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:27,198 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:27,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 17:31:27,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785984142] [2021-11-13 17:31:27,198 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:27,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:31:27,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:31:27,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:31:27,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:31:27,200 INFO L87 Difference]: Start difference. First operand 2355 states and 3415 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 17:31:27,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:27,326 INFO L93 Difference]: Finished difference Result 2327 states and 3359 transitions. [2021-11-13 17:31:27,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:31:27,327 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 17:31:27,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:27,342 INFO L225 Difference]: With dead ends: 2327 [2021-11-13 17:31:27,342 INFO L226 Difference]: Without dead ends: 2327 [2021-11-13 17:31:27,342 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 17:31:27,345 INFO L933 BasicCegarLoop]: 1349 mSDtfsCounter, 1296 mSDsluCounter, 1487 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 2836 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.37ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.33ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:27,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1303 Valid, 2836 Invalid, 64 Unknown, 0 Unchecked, 11.37ms Time], IncrementalHoareTripleChecker [32 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 57.33ms Time] [2021-11-13 17:31:27,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2327 states. [2021-11-13 17:31:27,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2327 to 2325. [2021-11-13 17:31:27,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2325 states, 1706 states have (on average 1.9390386869871044) internal successors, (3308), 2305 states have internal predecessors, (3308), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 17:31:27,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2325 states to 2325 states and 3357 transitions. [2021-11-13 17:31:27,425 INFO L78 Accepts]: Start accepts. Automaton has 2325 states and 3357 transitions. Word has length 17 [2021-11-13 17:31:27,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:27,427 INFO L470 AbstractCegarLoop]: Abstraction has 2325 states and 3357 transitions. [2021-11-13 17:31:27,427 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 17:31:27,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2325 states and 3357 transitions. [2021-11-13 17:31:27,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 17:31:27,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:27,429 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 17:31:27,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 17:31:27,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:31:27,645 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr42REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-13 17:31:27,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:27,646 INFO L85 PathProgramCache]: Analyzing trace with hash 928479182, now seen corresponding path program 1 times [2021-11-13 17:31:27,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:31:27,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1403585573] [2021-11-13 17:31:27,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:27,646 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:31:27,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:31:27,647 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:31:27,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 17:31:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:27,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:31:27,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:31:27,877 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 17:31:27,971 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 17:31:27,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:31:28,086 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 17:31:28,086 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:31:28,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1403585573] [2021-11-13 17:31:28,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1403585573] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:28,087 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:28,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 17:31:28,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114311994] [2021-11-13 17:31:28,087 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:28,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:31:28,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:31:28,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:31:28,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:31:28,089 INFO L87 Difference]: Start difference. First operand 2325 states and 3357 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 17:31:32,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:32,446 INFO L93 Difference]: Finished difference Result 3136 states and 4343 transitions. [2021-11-13 17:31:32,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:31:32,447 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 17:31:32,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:32,465 INFO L225 Difference]: With dead ends: 3136 [2021-11-13 17:31:32,466 INFO L226 Difference]: Without dead ends: 3136 [2021-11-13 17:31:32,466 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 17:31:32,467 INFO L933 BasicCegarLoop]: 685 mSDtfsCounter, 2519 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3611.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2523 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.46ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4242.78ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:32,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2523 Valid, 1411 Invalid, 1410 Unknown, 0 Unchecked, 21.46ms Time], IncrementalHoareTripleChecker [43 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 4242.78ms Time] [2021-11-13 17:31:32,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3136 states. [2021-11-13 17:31:32,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3136 to 2321. [2021-11-13 17:31:32,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2321 states, 1706 states have (on average 1.9343493552168816) internal successors, (3300), 2301 states have internal predecessors, (3300), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 17:31:32,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2321 states to 2321 states and 3349 transitions. [2021-11-13 17:31:32,542 INFO L78 Accepts]: Start accepts. Automaton has 2321 states and 3349 transitions. Word has length 31 [2021-11-13 17:31:32,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:32,542 INFO L470 AbstractCegarLoop]: Abstraction has 2321 states and 3349 transitions. [2021-11-13 17:31:32,543 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 17:31:32,543 INFO L276 IsEmpty]: Start isEmpty. Operand 2321 states and 3349 transitions. [2021-11-13 17:31:32,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 17:31:32,544 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:32,544 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 17:31:32,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 17:31:32,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:31:32,757 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr43REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-13 17:31:32,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:32,758 INFO L85 PathProgramCache]: Analyzing trace with hash 928479183, now seen corresponding path program 1 times [2021-11-13 17:31:32,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:31:32,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [776795022] [2021-11-13 17:31:32,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:32,759 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:31:32,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:31:32,760 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:31:32,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 17:31:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:32,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:31:32,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:31:33,012 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 17:31:33,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:33,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:31:33,720 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 17:31:33,721 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:31:33,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [776795022] [2021-11-13 17:31:33,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [776795022] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:33,721 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:33,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 17:31:33,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382396751] [2021-11-13 17:31:33,721 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:33,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:31:33,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:31:33,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:31:33,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:31:33,723 INFO L87 Difference]: Start difference. First operand 2321 states and 3349 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:31:44,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:44,980 INFO L93 Difference]: Finished difference Result 2773 states and 3708 transitions. [2021-11-13 17:31:44,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 17:31:44,995 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-13 17:31:44,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:45,010 INFO L225 Difference]: With dead ends: 2773 [2021-11-13 17:31:45,010 INFO L226 Difference]: Without dead ends: 2773 [2021-11-13 17:31:45,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:31:45,012 INFO L933 BasicCegarLoop]: 1007 mSDtfsCounter, 1217 mSDsluCounter, 2393 mSDsCounter, 0 mSdLazyCounter, 2951 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9743.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 3400 SdHoareTripleChecker+Invalid, 2971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.28ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11062.93ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:45,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1218 Valid, 3400 Invalid, 2971 Unknown, 0 Unchecked, 20.28ms Time], IncrementalHoareTripleChecker [20 Valid, 2951 Invalid, 0 Unknown, 0 Unchecked, 11062.93ms Time] [2021-11-13 17:31:45,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2773 states. [2021-11-13 17:31:45,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2773 to 2317. [2021-11-13 17:31:45,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2317 states, 1706 states have (on average 1.9296600234466588) internal successors, (3292), 2297 states have internal predecessors, (3292), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 17:31:45,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 3341 transitions. [2021-11-13 17:31:45,068 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 3341 transitions. Word has length 31 [2021-11-13 17:31:45,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:45,070 INFO L470 AbstractCegarLoop]: Abstraction has 2317 states and 3341 transitions. [2021-11-13 17:31:45,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:31:45,071 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 3341 transitions. [2021-11-13 17:31:45,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-13 17:31:45,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:45,076 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] [2021-11-13 17:31:45,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 17:31:45,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:31:45,289 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-13 17:31:45,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:45,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1635573428, now seen corresponding path program 1 times [2021-11-13 17:31:45,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:31:45,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [993627342] [2021-11-13 17:31:45,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:45,290 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:31:45,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:31:45,291 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:31:45,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 17:31:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:45,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:31:45,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:31:45,653 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 17:31:45,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:31:45,791 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 17:31:45,792 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:31:45,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [993627342] [2021-11-13 17:31:45,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [993627342] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:45,792 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:45,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 17:31:45,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987634417] [2021-11-13 17:31:45,793 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:45,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:31:45,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:31:45,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:31:45,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:31:45,795 INFO L87 Difference]: Start difference. First operand 2317 states and 3341 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:31:45,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:45,881 INFO L93 Difference]: Finished difference Result 2305 states and 3321 transitions. [2021-11-13 17:31:45,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:31:45,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2021-11-13 17:31:45,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:45,897 INFO L225 Difference]: With dead ends: 2305 [2021-11-13 17:31:45,897 INFO L226 Difference]: Without dead ends: 2305 [2021-11-13 17:31:45,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:31:45,900 INFO L933 BasicCegarLoop]: 1343 mSDtfsCounter, 1272 mSDsluCounter, 1399 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 2742 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.38ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.01ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:45,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1279 Valid, 2742 Invalid, 41 Unknown, 0 Unchecked, 8.38ms Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 50.01ms Time] [2021-11-13 17:31:45,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2305 states. [2021-11-13 17:31:45,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2305 to 2305. [2021-11-13 17:31:45,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2305 states, 1694 states have (on average 1.9315230224321134) internal successors, (3272), 2285 states have internal predecessors, (3272), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 17:31:45,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 3321 transitions. [2021-11-13 17:31:45,975 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 3321 transitions. Word has length 46 [2021-11-13 17:31:45,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:45,976 INFO L470 AbstractCegarLoop]: Abstraction has 2305 states and 3321 transitions. [2021-11-13 17:31:45,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:31:45,976 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 3321 transitions. [2021-11-13 17:31:45,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-13 17:31:45,982 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:45,982 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] [2021-11-13 17:31:45,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 17:31:46,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:31:46,198 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-13 17:31:46,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:46,199 INFO L85 PathProgramCache]: Analyzing trace with hash -2024025624, now seen corresponding path program 1 times [2021-11-13 17:31:46,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:31:46,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1505765643] [2021-11-13 17:31:46,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:46,200 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:31:46,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:31:46,201 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:31:46,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 17:31:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:46,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:31:46,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:31:46,873 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 17:31:46,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:31:47,261 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 17:31:47,261 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:31:47,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1505765643] [2021-11-13 17:31:47,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1505765643] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:47,262 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:47,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 17:31:47,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955217111] [2021-11-13 17:31:47,262 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:47,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:31:47,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:31:47,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:31:47,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:31:47,263 INFO L87 Difference]: Start difference. First operand 2305 states and 3321 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:31:47,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:47,475 INFO L93 Difference]: Finished difference Result 2316 states and 3170 transitions. [2021-11-13 17:31:47,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:31:47,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2021-11-13 17:31:47,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:47,487 INFO L225 Difference]: With dead ends: 2316 [2021-11-13 17:31:47,488 INFO L226 Difference]: Without dead ends: 2316 [2021-11-13 17:31:47,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:31:47,488 INFO L933 BasicCegarLoop]: 1422 mSDtfsCounter, 269 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 164.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2640 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.74ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 197.65ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:47,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 2640 Invalid, 97 Unknown, 0 Unchecked, 2.74ms Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 197.65ms Time] [2021-11-13 17:31:47,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2021-11-13 17:31:47,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 2121. [2021-11-13 17:31:47,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2121 states, 1510 states have (on average 1.9317880794701987) internal successors, (2917), 2101 states have internal predecessors, (2917), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 17:31:47,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2121 states to 2121 states and 2966 transitions. [2021-11-13 17:31:47,537 INFO L78 Accepts]: Start accepts. Automaton has 2121 states and 2966 transitions. Word has length 54 [2021-11-13 17:31:47,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:47,538 INFO L470 AbstractCegarLoop]: Abstraction has 2121 states and 2966 transitions. [2021-11-13 17:31:47,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:31:47,538 INFO L276 IsEmpty]: Start isEmpty. Operand 2121 states and 2966 transitions. [2021-11-13 17:31:47,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-13 17:31:47,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:47,539 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] [2021-11-13 17:31:47,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 17:31:47,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:31:47,752 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr61REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-13 17:31:47,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:47,752 INFO L85 PathProgramCache]: Analyzing trace with hash -808871559, now seen corresponding path program 1 times [2021-11-13 17:31:47,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:31:47,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504554030] [2021-11-13 17:31:47,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:47,753 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:31:47,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:31:47,755 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:31:47,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 17:31:48,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:48,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 17:31:48,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:31:48,129 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 17:31:48,137 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 17:31:48,782 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-13 17:31:48,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-11-13 17:31:48,790 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-13 17:31:48,790 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 17:31:48,822 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 17:31:48,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:31:57,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:57,265 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:31:57,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504554030] [2021-11-13 17:31:57,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504554030] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:57,265 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:57,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 17:31:57,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610419553] [2021-11-13 17:31:57,266 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:57,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:31:57,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:31:57,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:31:57,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=15, Unknown=2, NotChecked=0, Total=30 [2021-11-13 17:31:57,267 INFO L87 Difference]: Start difference. First operand 2121 states and 2966 transitions. Second operand has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:32:07,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:32:07,038 INFO L93 Difference]: Finished difference Result 2827 states and 3606 transitions. [2021-11-13 17:32:07,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:32:07,039 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2021-11-13 17:32:07,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:32:07,053 INFO L225 Difference]: With dead ends: 2827 [2021-11-13 17:32:07,053 INFO L226 Difference]: Without dead ends: 2827 [2021-11-13 17:32:07,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=19, Invalid=21, Unknown=2, NotChecked=0, Total=42 [2021-11-13 17:32:07,054 INFO L933 BasicCegarLoop]: 1191 mSDtfsCounter, 1451 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 2234 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8333.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 2800 SdHoareTripleChecker+Invalid, 3590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.69ms SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1281 IncrementalHoareTripleChecker+Unchecked, 9648.91ms IncrementalHoareTripleChecker+Time [2021-11-13 17:32:07,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1458 Valid, 2800 Invalid, 3590 Unknown, 0 Unchecked, 25.69ms Time], IncrementalHoareTripleChecker [75 Valid, 2234 Invalid, 0 Unknown, 1281 Unchecked, 9648.91ms Time] [2021-11-13 17:32:07,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2021-11-13 17:32:07,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 2216. [2021-11-13 17:32:07,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2216 states, 1637 states have (on average 1.8851557727550396) internal successors, (3086), 2193 states have internal predecessors, (3086), 28 states have call successors, (28), 5 states have call predecessors, (28), 4 states have return successors, (27), 18 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-13 17:32:07,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 3141 transitions. [2021-11-13 17:32:07,105 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 3141 transitions. Word has length 57 [2021-11-13 17:32:07,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:32:07,105 INFO L470 AbstractCegarLoop]: Abstraction has 2216 states and 3141 transitions. [2021-11-13 17:32:07,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:32:07,106 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 3141 transitions. [2021-11-13 17:32:07,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-13 17:32:07,106 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:32:07,106 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] [2021-11-13 17:32:07,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 17:32:07,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:32:07,321 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr63REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-13 17:32:07,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:07,322 INFO L85 PathProgramCache]: Analyzing trace with hash 63522970, now seen corresponding path program 1 times [2021-11-13 17:32:07,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:32:07,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105767644] [2021-11-13 17:32:07,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:07,323 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:32:07,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:32:07,324 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:32:07,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 17:32:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:07,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:32:07,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:32:07,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:07,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:32:07,937 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 17:32:08,198 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 17:32:08,198 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:32:08,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105767644] [2021-11-13 17:32:08,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105767644] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:08,198 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:08,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 17:32:08,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431778855] [2021-11-13 17:32:08,198 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:08,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:32:08,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:32:08,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:32:08,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:32:08,199 INFO L87 Difference]: Start difference. First operand 2216 states and 3141 transitions. Second operand has 6 states, 5 states have (on average 21.8) internal successors, (109), 6 states have internal predecessors, (109), 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 17:32:11,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:32:11,344 INFO L93 Difference]: Finished difference Result 2214 states and 3137 transitions. [2021-11-13 17:32:11,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:32:11,345 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.8) internal successors, (109), 6 states have internal predecessors, (109), 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 59 [2021-11-13 17:32:11,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:32:11,354 INFO L225 Difference]: With dead ends: 2214 [2021-11-13 17:32:11,354 INFO L226 Difference]: Without dead ends: 2214 [2021-11-13 17:32:11,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 113 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 17:32:11,355 INFO L933 BasicCegarLoop]: 782 mSDtfsCounter, 2930 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2635.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2936 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.41ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3104.16ms IncrementalHoareTripleChecker+Time [2021-11-13 17:32:11,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2936 Valid, 1490 Invalid, 755 Unknown, 0 Unchecked, 10.41ms Time], IncrementalHoareTripleChecker [41 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 3104.16ms Time] [2021-11-13 17:32:11,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2214 states. [2021-11-13 17:32:11,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2214 to 2214. [2021-11-13 17:32:11,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2214 states, 1637 states have (on average 1.8827122785583383) internal successors, (3082), 2191 states have internal predecessors, (3082), 28 states have call successors, (28), 5 states have call predecessors, (28), 4 states have return successors, (27), 18 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-13 17:32:11,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2214 states to 2214 states and 3137 transitions. [2021-11-13 17:32:11,400 INFO L78 Accepts]: Start accepts. Automaton has 2214 states and 3137 transitions. Word has length 59 [2021-11-13 17:32:11,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:32:11,401 INFO L470 AbstractCegarLoop]: Abstraction has 2214 states and 3137 transitions. [2021-11-13 17:32:11,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.8) internal successors, (109), 6 states have internal predecessors, (109), 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 17:32:11,401 INFO L276 IsEmpty]: Start isEmpty. Operand 2214 states and 3137 transitions. [2021-11-13 17:32:11,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-13 17:32:11,402 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:32:11,402 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:32:11,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 17:32:11,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:32:11,615 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr66REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-13 17:32:11,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:11,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1667441605, now seen corresponding path program 1 times [2021-11-13 17:32:11,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:32:11,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1160870796] [2021-11-13 17:32:11,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:11,616 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:32:11,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:32:11,616 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:32:11,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 17:32:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:11,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 17:32:11,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:32:11,935 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 17:32:11,949 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 17:32:11,987 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 17:32:12,000 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 17:32:12,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:32:12,116 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 17:32:12,116 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:32:12,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1160870796] [2021-11-13 17:32:12,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1160870796] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:12,117 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:12,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 17:32:12,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363300667] [2021-11-13 17:32:12,117 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:12,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:32:12,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:32:12,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:32:12,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:32:12,118 INFO L87 Difference]: Start difference. First operand 2214 states and 3137 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:32:16,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:32:16,415 INFO L93 Difference]: Finished difference Result 2213 states and 3135 transitions. [2021-11-13 17:32:16,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:32:16,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-13 17:32:16,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:32:16,422 INFO L225 Difference]: With dead ends: 2213 [2021-11-13 17:32:16,423 INFO L226 Difference]: Without dead ends: 2213 [2021-11-13 17:32:16,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:32:16,424 INFO L933 BasicCegarLoop]: 1313 mSDtfsCounter, 4 mSDsluCounter, 2041 mSDsCounter, 0 mSdLazyCounter, 1903 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3607.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3354 SdHoareTripleChecker+Invalid, 1904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.11ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4219.93ms IncrementalHoareTripleChecker+Time [2021-11-13 17:32:16,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 3354 Invalid, 1904 Unknown, 0 Unchecked, 12.11ms Time], IncrementalHoareTripleChecker [1 Valid, 1903 Invalid, 0 Unknown, 0 Unchecked, 4219.93ms Time] [2021-11-13 17:32:16,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2213 states. [2021-11-13 17:32:16,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2213 to 2213. [2021-11-13 17:32:16,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2213 states, 1637 states have (on average 1.8814905314599877) internal successors, (3080), 2190 states have internal predecessors, (3080), 28 states have call successors, (28), 5 states have call predecessors, (28), 4 states have return successors, (27), 18 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-13 17:32:16,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2213 states to 2213 states and 3135 transitions. [2021-11-13 17:32:16,464 INFO L78 Accepts]: Start accepts. Automaton has 2213 states and 3135 transitions. Word has length 62 [2021-11-13 17:32:16,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:32:16,464 INFO L470 AbstractCegarLoop]: Abstraction has 2213 states and 3135 transitions. [2021-11-13 17:32:16,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:32:16,465 INFO L276 IsEmpty]: Start isEmpty. Operand 2213 states and 3135 transitions. [2021-11-13 17:32:16,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-13 17:32:16,465 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:32:16,465 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:32:16,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-13 17:32:16,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:32:16,678 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr67REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-13 17:32:16,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:16,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1667441604, now seen corresponding path program 1 times [2021-11-13 17:32:16,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:32:16,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [577706734] [2021-11-13 17:32:16,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:16,680 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:32:16,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:32:16,681 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:32:16,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 17:32:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:16,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:32:16,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:32:17,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 17:32:17,072 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 17:32:17,088 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 17:32:17,142 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 17:32:17,145 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 17:32:17,165 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 17:32:17,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:32:17,484 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 17:32:17,484 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:32:17,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [577706734] [2021-11-13 17:32:17,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [577706734] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:17,484 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:17,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-13 17:32:17,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935530335] [2021-11-13 17:32:17,485 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:17,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:32:17,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:32:17,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:32:17,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:32:17,486 INFO L87 Difference]: Start difference. First operand 2213 states and 3135 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:32:32,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:32:32,283 INFO L93 Difference]: Finished difference Result 2212 states and 3133 transitions. [2021-11-13 17:32:32,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:32:32,284 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-13 17:32:32,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:32:32,290 INFO L225 Difference]: With dead ends: 2212 [2021-11-13 17:32:32,290 INFO L226 Difference]: Without dead ends: 2212 [2021-11-13 17:32:32,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:32:32,291 INFO L933 BasicCegarLoop]: 1313 mSDtfsCounter, 2 mSDsluCounter, 3960 mSDsCounter, 0 mSdLazyCounter, 3921 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13051.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5273 SdHoareTripleChecker+Invalid, 3922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.43ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14658.57ms IncrementalHoareTripleChecker+Time [2021-11-13 17:32:32,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 5273 Invalid, 3922 Unknown, 0 Unchecked, 23.43ms Time], IncrementalHoareTripleChecker [1 Valid, 3921 Invalid, 0 Unknown, 0 Unchecked, 14658.57ms Time] [2021-11-13 17:32:32,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2212 states. [2021-11-13 17:32:32,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2212 to 2212. [2021-11-13 17:32:32,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2212 states, 1635 states have (on average 1.8825688073394495) internal successors, (3078), 2189 states have internal predecessors, (3078), 28 states have call successors, (28), 5 states have call predecessors, (28), 4 states have return successors, (27), 18 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-13 17:32:32,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 3133 transitions. [2021-11-13 17:32:32,342 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 3133 transitions. Word has length 62 [2021-11-13 17:32:32,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:32:32,342 INFO L470 AbstractCegarLoop]: Abstraction has 2212 states and 3133 transitions. [2021-11-13 17:32:32,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:32:32,343 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 3133 transitions. [2021-11-13 17:32:32,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-13 17:32:32,343 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:32:32,343 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] [2021-11-13 17:32:32,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-13 17:32:32,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:32:32,556 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-13 17:32:32,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:32,557 INFO L85 PathProgramCache]: Analyzing trace with hash -2058509150, now seen corresponding path program 1 times [2021-11-13 17:32:32,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:32:32,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477765324] [2021-11-13 17:32:32,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:32,558 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:32:32,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:32:32,559 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:32:32,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 17:32:32,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:32,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:32:32,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:32:32,966 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 17:32:32,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:32:33,122 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 17:32:33,122 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:32:33,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477765324] [2021-11-13 17:32:33,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1477765324] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:33,123 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:33,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 17:32:33,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109130468] [2021-11-13 17:32:33,123 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:33,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:32:33,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:32:33,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:32:33,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:32:33,125 INFO L87 Difference]: Start difference. First operand 2212 states and 3133 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:32:33,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:32:33,291 INFO L93 Difference]: Finished difference Result 2222 states and 3150 transitions. [2021-11-13 17:32:33,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:32:33,292 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 70 [2021-11-13 17:32:33,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:32:33,298 INFO L225 Difference]: With dead ends: 2222 [2021-11-13 17:32:33,299 INFO L226 Difference]: Without dead ends: 2222 [2021-11-13 17:32:33,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:32:33,300 INFO L933 BasicCegarLoop]: 1311 mSDtfsCounter, 7 mSDsluCounter, 5218 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 111.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 6529 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.62ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 125.89ms IncrementalHoareTripleChecker+Time [2021-11-13 17:32:33,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 6529 Invalid, 62 Unknown, 0 Unchecked, 4.62ms Time], IncrementalHoareTripleChecker [10 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 125.89ms Time] [2021-11-13 17:32:33,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2021-11-13 17:32:33,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 2222. [2021-11-13 17:32:33,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2222 states, 1643 states have (on average 1.8807060255629946) internal successors, (3090), 2198 states have internal predecessors, (3090), 28 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (32), 18 states have call predecessors, (32), 27 states have call successors, (32) [2021-11-13 17:32:33,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2222 states to 2222 states and 3150 transitions. [2021-11-13 17:32:33,351 INFO L78 Accepts]: Start accepts. Automaton has 2222 states and 3150 transitions. Word has length 70 [2021-11-13 17:32:33,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:32:33,352 INFO L470 AbstractCegarLoop]: Abstraction has 2222 states and 3150 transitions. [2021-11-13 17:32:33,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:32:33,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states and 3150 transitions. [2021-11-13 17:32:33,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-13 17:32:33,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:32:33,353 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] [2021-11-13 17:32:33,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-13 17:32:33,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:32:33,566 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-13 17:32:33,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:33,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1077389214, now seen corresponding path program 1 times [2021-11-13 17:32:33,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:32:33,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2120967339] [2021-11-13 17:32:33,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:33,568 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:32:33,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:32:33,568 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:32:33,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-13 17:32:33,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:33,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:32:33,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:32:33,960 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 17:32:33,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:32:34,187 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 17:32:34,188 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:32:34,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2120967339] [2021-11-13 17:32:34,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2120967339] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:32:34,188 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:32:34,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-13 17:32:34,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206497835] [2021-11-13 17:32:34,189 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:32:34,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 17:32:34,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:32:34,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 17:32:34,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:32:34,190 INFO L87 Difference]: Start difference. First operand 2222 states and 3150 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:32:34,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:32:34,671 INFO L93 Difference]: Finished difference Result 2236 states and 3176 transitions. [2021-11-13 17:32:34,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 17:32:34,672 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 72 [2021-11-13 17:32:34,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:32:34,678 INFO L225 Difference]: With dead ends: 2236 [2021-11-13 17:32:34,678 INFO L226 Difference]: Without dead ends: 2232 [2021-11-13 17:32:34,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-13 17:32:34,681 INFO L933 BasicCegarLoop]: 1313 mSDtfsCounter, 30 mSDsluCounter, 6533 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 238.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 7846 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.56ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 270.68ms IncrementalHoareTripleChecker+Time [2021-11-13 17:32:34,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 7846 Invalid, 149 Unknown, 0 Unchecked, 16.56ms Time], IncrementalHoareTripleChecker [23 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 270.68ms Time] [2021-11-13 17:32:34,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2232 states. [2021-11-13 17:32:34,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2232 to 2228. [2021-11-13 17:32:34,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2228 states, 1649 states have (on average 1.8787143723468769) internal successors, (3098), 2204 states have internal predecessors, (3098), 28 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (32), 18 states have call predecessors, (32), 27 states have call successors, (32) [2021-11-13 17:32:34,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 3158 transitions. [2021-11-13 17:32:34,721 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 3158 transitions. Word has length 72 [2021-11-13 17:32:34,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:32:34,721 INFO L470 AbstractCegarLoop]: Abstraction has 2228 states and 3158 transitions. [2021-11-13 17:32:34,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:32:34,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 3158 transitions. [2021-11-13 17:32:34,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-13 17:32:34,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:32:34,728 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] [2021-11-13 17:32:34,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-13 17:32:34,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:32:34,942 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-13 17:32:34,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:34,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1730154526, now seen corresponding path program 2 times [2021-11-13 17:32:34,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:32:34,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1773039620] [2021-11-13 17:32:34,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 17:32:34,943 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:32:34,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:32:34,944 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:32:34,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-13 17:32:35,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 17:32:35,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:32:35,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 17:32:35,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:32:35,563 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:35,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:32:36,087 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:36,087 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:32:36,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1773039620] [2021-11-13 17:32:36,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1773039620] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:32:36,088 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:32:36,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-13 17:32:36,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930668380] [2021-11-13 17:32:36,088 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:32:36,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 17:32:36,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:32:36,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 17:32:36,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-13 17:32:36,090 INFO L87 Difference]: Start difference. First operand 2228 states and 3158 transitions. Second operand has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:32:37,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:32:37,837 INFO L93 Difference]: Finished difference Result 2256 states and 3220 transitions. [2021-11-13 17:32:37,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-13 17:32:37,838 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 76 [2021-11-13 17:32:37,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:32:37,843 INFO L225 Difference]: With dead ends: 2256 [2021-11-13 17:32:37,844 INFO L226 Difference]: Without dead ends: 2252 [2021-11-13 17:32:37,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-13 17:32:37,845 INFO L933 BasicCegarLoop]: 1317 mSDtfsCounter, 99 mSDsluCounter, 9188 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 723.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 10505 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.95ms SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 826.74ms IncrementalHoareTripleChecker+Time [2021-11-13 17:32:37,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 10505 Invalid, 470 Unknown, 0 Unchecked, 8.95ms Time], IncrementalHoareTripleChecker [89 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 826.74ms Time] [2021-11-13 17:32:37,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2252 states. [2021-11-13 17:32:37,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2252 to 2240. [2021-11-13 17:32:37,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2240 states, 1661 states have (on average 1.8747742323901264) internal successors, (3114), 2216 states have internal predecessors, (3114), 28 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (32), 18 states have call predecessors, (32), 27 states have call successors, (32) [2021-11-13 17:32:37,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2240 states to 2240 states and 3174 transitions. [2021-11-13 17:32:37,912 INFO L78 Accepts]: Start accepts. Automaton has 2240 states and 3174 transitions. Word has length 76 [2021-11-13 17:32:37,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:32:37,913 INFO L470 AbstractCegarLoop]: Abstraction has 2240 states and 3174 transitions. [2021-11-13 17:32:37,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:32:37,913 INFO L276 IsEmpty]: Start isEmpty. Operand 2240 states and 3174 transitions. [2021-11-13 17:32:37,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-13 17:32:37,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:32:37,914 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:32:37,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-13 17:32:38,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:32:38,130 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-13 17:32:38,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:38,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1222123806, now seen corresponding path program 3 times [2021-11-13 17:32:38,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:32:38,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1949276254] [2021-11-13 17:32:38,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 17:32:38,131 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:32:38,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:32:38,132 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:32:38,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-13 17:32:38,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-13 17:32:38,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:32:38,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 17:32:38,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:32:39,306 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:39,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:32:41,039 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:41,039 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:32:41,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1949276254] [2021-11-13 17:32:41,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1949276254] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:32:41,040 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:32:41,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-13 17:32:41,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405037619] [2021-11-13 17:32:41,041 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:32:41,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-13 17:32:41,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:32:41,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-13 17:32:41,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-13 17:32:41,043 INFO L87 Difference]: Start difference. First operand 2240 states and 3174 transitions. Second operand has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:32:50,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:32:50,195 INFO L93 Difference]: Finished difference Result 2296 states and 3338 transitions. [2021-11-13 17:32:50,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-13 17:32:50,196 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 84 [2021-11-13 17:32:50,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:32:50,201 INFO L225 Difference]: With dead ends: 2296 [2021-11-13 17:32:50,202 INFO L226 Difference]: Without dead ends: 2290 [2021-11-13 17:32:50,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-13 17:32:50,204 INFO L933 BasicCegarLoop]: 1323 mSDtfsCounter, 204 mSDsluCounter, 24977 mSDsCounter, 0 mSdLazyCounter, 1763 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2993.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 26300 SdHoareTripleChecker+Invalid, 1944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.92ms SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3372.99ms IncrementalHoareTripleChecker+Time [2021-11-13 17:32:50,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 26300 Invalid, 1944 Unknown, 0 Unchecked, 26.92ms Time], IncrementalHoareTripleChecker [181 Valid, 1763 Invalid, 0 Unknown, 0 Unchecked, 3372.99ms Time] [2021-11-13 17:32:50,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2290 states. [2021-11-13 17:32:50,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2290 to 2264. [2021-11-13 17:32:50,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2264 states, 1685 states have (on average 1.8664688427299703) internal successors, (3145), 2240 states have internal predecessors, (3145), 28 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (32), 18 states have call predecessors, (32), 27 states have call successors, (32) [2021-11-13 17:32:50,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2264 states to 2264 states and 3205 transitions. [2021-11-13 17:32:50,248 INFO L78 Accepts]: Start accepts. Automaton has 2264 states and 3205 transitions. Word has length 84 [2021-11-13 17:32:50,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:32:50,249 INFO L470 AbstractCegarLoop]: Abstraction has 2264 states and 3205 transitions. [2021-11-13 17:32:50,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:32:50,249 INFO L276 IsEmpty]: Start isEmpty. Operand 2264 states and 3205 transitions. [2021-11-13 17:32:50,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-13 17:32:50,250 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:32:50,250 INFO L514 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:32:50,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-13 17:32:50,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:32:50,483 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-13 17:32:50,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:50,484 INFO L85 PathProgramCache]: Analyzing trace with hash -929383198, now seen corresponding path program 4 times [2021-11-13 17:32:50,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:32:50,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [161202932] [2021-11-13 17:32:50,484 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 17:32:50,484 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:32:50,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:32:50,485 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:32:50,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-13 17:32:50,799 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 17:32:50,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:32:50,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-13 17:32:50,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:32:52,050 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:52,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:32:56,072 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:56,073 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:32:56,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [161202932] [2021-11-13 17:32:56,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [161202932] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:32:56,073 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:32:56,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-13 17:32:56,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504223746] [2021-11-13 17:32:56,074 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:32:56,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-13 17:32:56,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:32:56,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-13 17:32:56,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-13 17:32:56,077 INFO L87 Difference]: Start difference. First operand 2264 states and 3205 transitions. Second operand has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:33:12,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:33:12,818 INFO L93 Difference]: Finished difference Result 2356 states and 3441 transitions. [2021-11-13 17:33:12,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-13 17:33:12,819 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 100 [2021-11-13 17:33:12,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:33:12,824 INFO L225 Difference]: With dead ends: 2356 [2021-11-13 17:33:12,824 INFO L226 Difference]: Without dead ends: 2352 [2021-11-13 17:33:12,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-13 17:33:12,832 INFO L933 BasicCegarLoop]: 1340 mSDtfsCounter, 309 mSDsluCounter, 41389 mSDsCounter, 0 mSdLazyCounter, 5007 mSolverCounterSat, 512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8721.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 42729 SdHoareTripleChecker+Invalid, 5519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 55.69ms SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 5007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9834.96ms IncrementalHoareTripleChecker+Time [2021-11-13 17:33:12,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 42729 Invalid, 5519 Unknown, 0 Unchecked, 55.69ms Time], IncrementalHoareTripleChecker [512 Valid, 5007 Invalid, 0 Unknown, 0 Unchecked, 9834.96ms Time] [2021-11-13 17:33:12,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2021-11-13 17:33:12,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 2294. [2021-11-13 17:33:12,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2294 states, 1715 states have (on average 1.8606413994169095) internal successors, (3191), 2270 states have internal predecessors, (3191), 28 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (32), 18 states have call predecessors, (32), 27 states have call successors, (32) [2021-11-13 17:33:12,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2294 states to 2294 states and 3251 transitions. [2021-11-13 17:33:12,876 INFO L78 Accepts]: Start accepts. Automaton has 2294 states and 3251 transitions. Word has length 100 [2021-11-13 17:33:12,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:33:12,877 INFO L470 AbstractCegarLoop]: Abstraction has 2294 states and 3251 transitions. [2021-11-13 17:33:12,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:33:12,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2294 states and 3251 transitions. [2021-11-13 17:33:12,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-13 17:33:12,878 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:33:12,878 INFO L514 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:33:12,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-13 17:33:13,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:33:13,112 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-13 17:33:13,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:33:13,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1199208670, now seen corresponding path program 5 times [2021-11-13 17:33:13,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:33:13,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [127145078] [2021-11-13 17:33:13,115 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 17:33:13,115 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:33:13,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:33:13,116 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:33:13,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0264d781-1de9-4521-adff-20fd1448967f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-13 17:33:14,366 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-13 17:33:14,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:33:14,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-13 17:33:14,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:33:14,416 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 17:33:14,626 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-13 17:33:14,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-13 17:33:14,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-13 17:33:14,900 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 48 treesize of output 36