./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/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_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/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_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/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 b9bf0bad0cbe69b5d3c479fc9571d5ea3a755c149f856a4942bf9e49854dfec3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:54:29,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:54:29,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:54:29,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:54:29,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:54:29,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:54:29,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:54:29,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:54:29,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:54:29,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:54:29,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:54:29,685 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:54:29,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:54:29,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:54:29,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:54:29,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:54:29,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:54:29,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:54:29,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:54:29,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:54:29,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:54:29,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:54:29,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:54:29,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:54:29,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:54:29,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:54:29,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:54:29,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:54:29,740 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:54:29,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:54:29,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:54:29,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:54:29,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:54:29,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:54:29,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:54:29,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:54:29,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:54:29,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:54:29,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:54:29,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:54:29,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:54:29,753 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-13 17:54:29,779 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:54:29,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:54:29,780 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:54:29,780 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:54:29,781 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:54:29,781 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:54:29,782 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:54:29,782 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:54:29,782 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:54:29,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:54:29,783 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:54:29,783 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 17:54:29,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:54:29,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:54:29,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:54:29,784 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 17:54:29,784 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 17:54:29,784 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 17:54:29,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:54:29,784 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 17:54:29,785 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:54:29,785 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:54:29,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:54:29,785 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:54:29,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:54:29,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:54:29,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:54:29,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:54:29,786 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:54:29,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:54:29,787 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:54:29,787 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_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9bf0bad0cbe69b5d3c479fc9571d5ea3a755c149f856a4942bf9e49854dfec3 [2021-11-13 17:54:30,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:54:30,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:54:30,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:54:30,075 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:54:30,076 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:54:30,078 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i [2021-11-13 17:54:30,139 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/data/d4fbbd46f/0414a58326094b36b56eb78fd201b7f8/FLAG6272397e4 [2021-11-13 17:54:30,783 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:54:30,784 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i [2021-11-13 17:54:30,813 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/data/d4fbbd46f/0414a58326094b36b56eb78fd201b7f8/FLAG6272397e4 [2021-11-13 17:54:30,978 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/data/d4fbbd46f/0414a58326094b36b56eb78fd201b7f8 [2021-11-13 17:54:30,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:54:30,981 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 17:54:30,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:54:30,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:54:31,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:54:31,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:54:30" (1/1) ... [2021-11-13 17:54:31,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7afe522a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:54:31, skipping insertion in model container [2021-11-13 17:54:31,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:54:30" (1/1) ... [2021-11-13 17:54:31,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:54:31,064 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:54:31,568 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_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i[33021,33034] [2021-11-13 17:54:31,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:54:31,730 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 17:54:31,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6eb8587a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:54:31, skipping insertion in model container [2021-11-13 17:54:31,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:54:31,731 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-13 17:54:31,733 INFO L158 Benchmark]: Toolchain (without parser) took 750.78ms. Allocated memory is still 109.1MB. Free memory was 70.6MB in the beginning and 75.6MB in the end (delta: -4.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 17:54:31,734 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 109.1MB. Free memory is still 89.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:54:31,735 INFO L158 Benchmark]: CACSL2BoogieTranslator took 733.25ms. Allocated memory is still 109.1MB. Free memory was 70.5MB in the beginning and 75.6MB in the end (delta: -5.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 17:54:31,737 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 109.1MB. Free memory is still 89.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 733.25ms. Allocated memory is still 109.1MB. Free memory was 70.5MB in the beginning and 75.6MB in the end (delta: -5.1MB). Peak memory consumption was 10.5MB. 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_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/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_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/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_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/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 b9bf0bad0cbe69b5d3c479fc9571d5ea3a755c149f856a4942bf9e49854dfec3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:54:34,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:54:34,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:54:34,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:54:34,155 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:54:34,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:54:34,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:54:34,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:54:34,174 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:54:34,182 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:54:34,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:54:34,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:54:34,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:54:34,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:54:34,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:54:34,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:54:34,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:54:34,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:54:34,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:54:34,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:54:34,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:54:34,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:54:34,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:54:34,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:54:34,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:54:34,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:54:34,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:54:34,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:54:34,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:54:34,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:54:34,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:54:34,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:54:34,221 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:54:34,222 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:54:34,224 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:54:34,224 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:54:34,225 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:54:34,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:54:34,226 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:54:34,227 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:54:34,228 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:54:34,229 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-13 17:54:34,281 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:54:34,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:54:34,282 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:54:34,282 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:54:34,283 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:54:34,283 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:54:34,285 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:54:34,285 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:54:34,285 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:54:34,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:54:34,286 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:54:34,287 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 17:54:34,287 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:54:34,287 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:54:34,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:54:34,287 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 17:54:34,288 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 17:54:34,288 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 17:54:34,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:54:34,288 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 17:54:34,288 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 17:54:34,289 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 17:54:34,289 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:54:34,289 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:54:34,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:54:34,289 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:54:34,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:54:34,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:54:34,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:54:34,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:54:34,290 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 17:54:34,291 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 17:54:34,291 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:54:34,291 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 17:54:34,291 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_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9bf0bad0cbe69b5d3c479fc9571d5ea3a755c149f856a4942bf9e49854dfec3 [2021-11-13 17:54:34,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:54:34,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:54:34,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:54:34,729 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:54:34,731 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:54:34,733 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i [2021-11-13 17:54:34,807 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/data/444f57744/3071a502ca5646daa98ed238da561b5e/FLAG84dad2b08 [2021-11-13 17:54:35,501 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:54:35,502 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i [2021-11-13 17:54:35,534 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/data/444f57744/3071a502ca5646daa98ed238da561b5e/FLAG84dad2b08 [2021-11-13 17:54:35,709 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/data/444f57744/3071a502ca5646daa98ed238da561b5e [2021-11-13 17:54:35,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:54:35,722 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 17:54:35,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:54:35,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:54:35,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:54:35,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:54:35" (1/1) ... [2021-11-13 17:54:35,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cbaa156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:54:35, skipping insertion in model container [2021-11-13 17:54:35,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:54:35" (1/1) ... [2021-11-13 17:54:35,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:54:35,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:54:36,238 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_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i[33021,33034] [2021-11-13 17:54:36,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:54:36,388 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 17:54:36,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:54:36,420 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_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i[33021,33034] [2021-11-13 17:54:36,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:54:36,512 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:54:36,539 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_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i[33021,33034] [2021-11-13 17:54:36,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:54:36,690 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:54:36,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:54:36 WrapperNode [2021-11-13 17:54:36,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:54:36,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:54:36,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:54:36,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:54:36,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:54:36" (1/1) ... [2021-11-13 17:54:36,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:54:36" (1/1) ... [2021-11-13 17:54:36,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:54:36" (1/1) ... [2021-11-13 17:54:36,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:54:36" (1/1) ... [2021-11-13 17:54:36,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:54:36" (1/1) ... [2021-11-13 17:54:36,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:54:36" (1/1) ... [2021-11-13 17:54:36,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:54:36" (1/1) ... [2021-11-13 17:54:36,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:54:36,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:54:36,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:54:36,911 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:54:36,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:54:36" (1/1) ... [2021-11-13 17:54:36,920 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:54:36,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:54:36,945 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:54:36,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:54:36,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-13 17:54:36,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:54:36,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 17:54:36,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-13 17:54:36,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-13 17:54:36,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-13 17:54:36,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-13 17:54:36,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-13 17:54:36,995 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-13 17:54:36,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 17:54:36,996 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-13 17:54:36,997 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-13 17:54:36,997 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 17:54:36,997 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-13 17:54:36,997 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-13 17:54:36,997 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-13 17:54:36,998 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-13 17:54:36,998 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-13 17:54:36,998 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-13 17:54:37,000 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-13 17:54:37,000 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-13 17:54:37,000 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-13 17:54:37,000 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-13 17:54:37,000 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-13 17:54:37,001 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-13 17:54:37,001 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-13 17:54:37,001 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-13 17:54:37,001 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-13 17:54:37,001 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-13 17:54:37,001 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-13 17:54:37,002 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-13 17:54:37,002 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-13 17:54:37,002 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-13 17:54:37,002 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-13 17:54:37,002 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-13 17:54:37,003 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-13 17:54:37,004 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-13 17:54:37,004 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-13 17:54:37,005 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-13 17:54:37,005 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-13 17:54:37,005 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-13 17:54:37,005 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-13 17:54:37,005 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-13 17:54:37,006 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-13 17:54:37,006 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-13 17:54:37,006 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-13 17:54:37,006 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-13 17:54:37,006 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-13 17:54:37,006 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-13 17:54:37,007 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-13 17:54:37,007 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-13 17:54:37,007 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-13 17:54:37,007 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-13 17:54:37,008 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-13 17:54:37,008 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-13 17:54:37,008 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-13 17:54:37,008 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-13 17:54:37,010 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-13 17:54:37,010 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-13 17:54:37,011 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-13 17:54:37,012 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-13 17:54:37,012 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-13 17:54:37,013 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-13 17:54:37,013 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-13 17:54:37,013 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-13 17:54:37,013 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-13 17:54:37,013 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-13 17:54:37,013 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-13 17:54:37,014 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-13 17:54:37,014 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-13 17:54:37,014 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-13 17:54:37,014 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-13 17:54:37,014 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-13 17:54:37,014 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-13 17:54:37,015 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-13 17:54:37,015 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-13 17:54:37,016 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-13 17:54:37,016 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-13 17:54:37,016 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-13 17:54:37,016 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-13 17:54:37,016 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-13 17:54:37,017 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-13 17:54:37,017 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-13 17:54:37,017 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-13 17:54:37,018 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-13 17:54:37,018 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-13 17:54:37,018 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-13 17:54:37,018 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-13 17:54:37,018 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-13 17:54:37,018 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-13 17:54:37,019 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-13 17:54:37,019 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-13 17:54:37,019 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-13 17:54:37,019 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-13 17:54:37,019 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-13 17:54:37,020 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-13 17:54:37,020 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-13 17:54:37,020 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-13 17:54:37,020 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-13 17:54:37,021 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-13 17:54:37,021 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-13 17:54:37,021 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-13 17:54:37,021 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-13 17:54:37,021 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-13 17:54:37,021 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-13 17:54:37,022 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-13 17:54:37,022 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-13 17:54:37,022 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-13 17:54:37,022 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-13 17:54:37,022 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-13 17:54:37,022 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-13 17:54:37,022 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-13 17:54:37,023 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-13 17:54:37,023 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-13 17:54:37,023 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-13 17:54:37,023 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-13 17:54:37,024 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-13 17:54:37,024 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-13 17:54:37,025 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-13 17:54:37,028 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-13 17:54:37,029 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-13 17:54:37,029 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-13 17:54:37,029 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-13 17:54:37,029 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-13 17:54:37,030 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-13 17:54:37,030 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-13 17:54:37,030 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-13 17:54:37,032 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-13 17:54:37,039 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-13 17:54:37,039 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-13 17:54:37,039 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-13 17:54:37,039 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-13 17:54:37,040 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-13 17:54:37,040 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-13 17:54:37,040 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-13 17:54:37,040 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-13 17:54:37,040 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-13 17:54:37,040 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-13 17:54:37,040 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-13 17:54:37,041 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-13 17:54:37,041 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-13 17:54:37,041 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-13 17:54:37,041 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-13 17:54:37,041 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-13 17:54:37,041 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-13 17:54:37,042 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-13 17:54:37,042 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-13 17:54:37,042 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-13 17:54:37,042 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-13 17:54:37,042 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-13 17:54:37,042 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-13 17:54:37,042 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-13 17:54:37,043 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-13 17:54:37,043 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-13 17:54:37,043 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-13 17:54:37,043 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-13 17:54:37,043 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-13 17:54:37,043 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-13 17:54:37,043 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-13 17:54:37,044 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-13 17:54:37,044 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-13 17:54:37,044 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-13 17:54:37,044 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-13 17:54:37,044 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-13 17:54:37,044 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-13 17:54:37,044 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-13 17:54:37,045 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-13 17:54:37,045 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-13 17:54:37,045 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-13 17:54:37,045 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-13 17:54:37,045 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-13 17:54:37,045 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-13 17:54:37,046 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-13 17:54:37,046 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-13 17:54:37,046 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-13 17:54:37,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:54:37,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 17:54:37,046 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-13 17:54:37,046 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-13 17:54:37,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 17:54:37,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 17:54:37,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 17:54:37,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 17:54:37,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 17:54:37,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 17:54:37,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:54:37,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 17:54:37,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-13 17:54:37,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 17:54:37,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:54:37,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 17:54:37,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 17:54:37,702 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-13 17:54:43,149 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:54:43,149 INFO L299 CfgBuilder]: Removed 60 assume(true) statements. [2021-11-13 17:54:43,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:54:43 BoogieIcfgContainer [2021-11-13 17:54:43,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:54:43,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:54:43,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:54:43,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:54:43,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:54:35" (1/3) ... [2021-11-13 17:54:43,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b7fae07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:54:43, skipping insertion in model container [2021-11-13 17:54:43,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:54:36" (2/3) ... [2021-11-13 17:54:43,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b7fae07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:54:43, skipping insertion in model container [2021-11-13 17:54:43,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:54:43" (3/3) ... [2021-11-13 17:54:43,161 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test4-1.i [2021-11-13 17:54:43,166 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:54:43,167 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 648 error locations. [2021-11-13 17:54:43,213 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:54:43,220 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 17:54:43,221 INFO L340 AbstractCegarLoop]: Starting to check reachability of 648 error locations. [2021-11-13 17:54:43,265 INFO L276 IsEmpty]: Start isEmpty. Operand has 1282 states, 615 states have (on average 2.2536585365853656) internal successors, (1386), 1267 states have internal predecessors, (1386), 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 17:54:43,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-13 17:54:43,273 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:54:43,273 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:54:43,274 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-13 17:54:43,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:54:43,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1382358025, now seen corresponding path program 1 times [2021-11-13 17:54:43,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:54:43,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65064331] [2021-11-13 17:54:43,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:54:43,315 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:54:43,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:54:43,320 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:54:43,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 17:54:43,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:43,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 17:54:43,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:54:43,658 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 17:54:43,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:54:43,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:54:43,699 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:54:43,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65064331] [2021-11-13 17:54:43,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65064331] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:54:43,700 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:54:43,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 17:54:43,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115442665] [2021-11-13 17:54:43,703 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:54:43,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 17:54:43,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:54:43,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 17:54:43,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 17:54:43,738 INFO L87 Difference]: Start difference. First operand has 1282 states, 615 states have (on average 2.2536585365853656) internal successors, (1386), 1267 states have internal predecessors, (1386), 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 17:54:43,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:54:43,866 INFO L93 Difference]: Finished difference Result 1264 states and 1338 transitions. [2021-11-13 17:54:43,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 17:54:43,871 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 17:54:43,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:54:43,911 INFO L225 Difference]: With dead ends: 1264 [2021-11-13 17:54:43,911 INFO L226 Difference]: Without dead ends: 1261 [2021-11-13 17:54:43,916 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 17:54:43,923 INFO L933 BasicCegarLoop]: 1338 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, 1338 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.08ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 17:54:43,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1338 Invalid, 0 Unknown, 0 Unchecked, 13.08ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 17:54:43,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2021-11-13 17:54:44,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 1261. [2021-11-13 17:54:44,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1261 states, 606 states have (on average 2.1419141914191417) internal successors, (1298), 1247 states have internal predecessors, (1298), 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 17:54:44,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 1335 transitions. [2021-11-13 17:54:44,052 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 1335 transitions. Word has length 9 [2021-11-13 17:54:44,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:54:44,053 INFO L470 AbstractCegarLoop]: Abstraction has 1261 states and 1335 transitions. [2021-11-13 17:54:44,053 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 17:54:44,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 1335 transitions. [2021-11-13 17:54:44,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-13 17:54:44,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:54:44,054 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:54:44,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 17:54:44,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:54:44,266 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-13 17:54:44,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:54:44,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1382357963, now seen corresponding path program 1 times [2021-11-13 17:54:44,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:54:44,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1181790500] [2021-11-13 17:54:44,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:54:44,268 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:54:44,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:54:44,269 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:54:44,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 17:54:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:44,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:54:44,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:54:44,560 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 17:54:44,585 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 17:54:44,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:54:44,617 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 17:54:44,617 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:54:44,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1181790500] [2021-11-13 17:54:44,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1181790500] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:54:44,618 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:54:44,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 17:54:44,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299844240] [2021-11-13 17:54:44,618 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:54:44,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:54:44,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:54:44,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:54:44,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:54:44,621 INFO L87 Difference]: Start difference. First operand 1261 states and 1335 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 17:54:47,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:54:47,303 INFO L93 Difference]: Finished difference Result 1298 states and 1385 transitions. [2021-11-13 17:54:47,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:54:47,304 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 17:54:47,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:54:47,311 INFO L225 Difference]: With dead ends: 1298 [2021-11-13 17:54:47,312 INFO L226 Difference]: Without dead ends: 1298 [2021-11-13 17:54:47,312 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 17:54:47,314 INFO L933 BasicCegarLoop]: 607 mSDtfsCounter, 1137 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2170.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.63ms SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2597.90ms IncrementalHoareTripleChecker+Time [2021-11-13 17:54:47,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1144 Valid, 758 Invalid, 818 Unknown, 0 Unchecked, 20.63ms Time], IncrementalHoareTripleChecker [105 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 2597.90ms Time] [2021-11-13 17:54:47,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2021-11-13 17:54:47,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1244. [2021-11-13 17:54:47,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 682 states have (on average 1.964809384164223) internal successors, (1340), 1230 states have internal predecessors, (1340), 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 17:54:47,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1377 transitions. [2021-11-13 17:54:47,367 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1377 transitions. Word has length 9 [2021-11-13 17:54:47,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:54:47,367 INFO L470 AbstractCegarLoop]: Abstraction has 1244 states and 1377 transitions. [2021-11-13 17:54:47,367 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 17:54:47,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1377 transitions. [2021-11-13 17:54:47,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-13 17:54:47,368 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:54:47,368 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:54:47,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 17:54:47,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:54:47,578 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-13 17:54:47,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:54:47,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1382357962, now seen corresponding path program 1 times [2021-11-13 17:54:47,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:54:47,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1393620990] [2021-11-13 17:54:47,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:54:47,579 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:54:47,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:54:47,580 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:54:47,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 17:54:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:47,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:54:47,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:54:47,794 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 17:54:47,823 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 17:54:47,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:54:47,911 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 17:54:47,912 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:54:47,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1393620990] [2021-11-13 17:54:47,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1393620990] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:54:47,915 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:54:47,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 17:54:47,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893647495] [2021-11-13 17:54:47,916 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:54:47,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:54:47,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:54:47,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:54:47,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:54:47,919 INFO L87 Difference]: Start difference. First operand 1244 states and 1377 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 17:54:53,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:54:53,582 INFO L93 Difference]: Finished difference Result 1598 states and 1752 transitions. [2021-11-13 17:54:53,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:54:53,583 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 17:54:53,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:54:53,592 INFO L225 Difference]: With dead ends: 1598 [2021-11-13 17:54:53,593 INFO L226 Difference]: Without dead ends: 1598 [2021-11-13 17:54:53,593 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 17:54:53,594 INFO L933 BasicCegarLoop]: 938 mSDtfsCounter, 1097 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4874.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.11ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5559.69ms IncrementalHoareTripleChecker+Time [2021-11-13 17:54:53,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1100 Valid, 1441 Invalid, 929 Unknown, 0 Unchecked, 20.11ms Time], IncrementalHoareTripleChecker [28 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 5559.69ms Time] [2021-11-13 17:54:53,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2021-11-13 17:54:53,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1400. [2021-11-13 17:54:53,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 848 states have (on average 1.9410377358490567) internal successors, (1646), 1386 states have internal predecessors, (1646), 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 17:54:53,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 1683 transitions. [2021-11-13 17:54:53,669 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 1683 transitions. Word has length 9 [2021-11-13 17:54:53,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:54:53,670 INFO L470 AbstractCegarLoop]: Abstraction has 1400 states and 1683 transitions. [2021-11-13 17:54:53,670 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 17:54:53,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 1683 transitions. [2021-11-13 17:54:53,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-13 17:54:53,671 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:54:53,671 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:54:53,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 17:54:53,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:54:53,882 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr640REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-13 17:54:53,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:54:53,883 INFO L85 PathProgramCache]: Analyzing trace with hash 98263510, now seen corresponding path program 1 times [2021-11-13 17:54:53,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:54:53,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [964465834] [2021-11-13 17:54:53,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:54:53,884 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:54:53,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:54:53,886 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:54:53,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 17:54:54,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:54,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:54:54,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:54:54,059 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 17:54:54,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:54:54,087 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 17:54:54,087 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:54:54,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [964465834] [2021-11-13 17:54:54,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [964465834] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:54:54,088 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:54:54,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 17:54:54,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743830632] [2021-11-13 17:54:54,088 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:54:54,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:54:54,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:54:54,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:54:54,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:54:54,090 INFO L87 Difference]: Start difference. First operand 1400 states and 1683 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 17:54:54,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:54:54,257 INFO L93 Difference]: Finished difference Result 2745 states and 3291 transitions. [2021-11-13 17:54:54,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:54:54,258 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 17:54:54,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:54:54,275 INFO L225 Difference]: With dead ends: 2745 [2021-11-13 17:54:54,275 INFO L226 Difference]: Without dead ends: 2745 [2021-11-13 17:54:54,275 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 17:54:54,276 INFO L933 BasicCegarLoop]: 1511 mSDtfsCounter, 3153 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3165 SdHoareTripleChecker+Valid, 2732 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.53ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 111.02ms IncrementalHoareTripleChecker+Time [2021-11-13 17:54:54,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3165 Valid, 2732 Invalid, 24 Unknown, 0 Unchecked, 8.53ms Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 111.02ms Time] [2021-11-13 17:54:54,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2021-11-13 17:54:54,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 2216. [2021-11-13 17:54:54,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2216 states, 1664 states have (on average 1.9483173076923077) internal successors, (3242), 2196 states have internal predecessors, (3242), 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 17:54:54,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 3291 transitions. [2021-11-13 17:54:54,349 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 3291 transitions. Word has length 10 [2021-11-13 17:54:54,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:54:54,349 INFO L470 AbstractCegarLoop]: Abstraction has 2216 states and 3291 transitions. [2021-11-13 17:54:54,349 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 17:54:54,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 3291 transitions. [2021-11-13 17:54:54,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-13 17:54:54,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:54:54,350 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:54:54,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 17:54:54,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:54:54,562 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr4REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-13 17:54:54,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:54:54,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1364426047, now seen corresponding path program 1 times [2021-11-13 17:54:54,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:54:54,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675898199] [2021-11-13 17:54:54,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:54:54,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:54:54,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:54:54,564 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:54:54,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 17:54:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:54,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:54:54,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:54:54,829 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 17:54:54,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:54:54,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:54:54,886 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:54:54,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675898199] [2021-11-13 17:54:54,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1675898199] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:54:54,887 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:54:54,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 17:54:54,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104181868] [2021-11-13 17:54:54,887 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:54:54,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:54:54,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:54:54,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:54:54,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:54:54,889 INFO L87 Difference]: Start difference. First operand 2216 states and 3291 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 17:54:54,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:54:54,942 INFO L93 Difference]: Finished difference Result 2156 states and 3205 transitions. [2021-11-13 17:54:54,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:54:54,942 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 17:54:54,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:54:54,958 INFO L225 Difference]: With dead ends: 2156 [2021-11-13 17:54:54,958 INFO L226 Difference]: Without dead ends: 2156 [2021-11-13 17:54:54,958 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 17:54:54,961 INFO L933 BasicCegarLoop]: 1184 mSDtfsCounter, 1115 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.61ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.94ms IncrementalHoareTripleChecker+Time [2021-11-13 17:54:54,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1122 Valid, 1328 Invalid, 12 Unknown, 0 Unchecked, 3.61ms Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 14.94ms Time] [2021-11-13 17:54:54,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2156 states. [2021-11-13 17:54:55,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2156 to 2156. [2021-11-13 17:54:55,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 1628 states have (on average 1.9385749385749387) internal successors, (3156), 2136 states have internal predecessors, (3156), 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 17:54:55,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 3205 transitions. [2021-11-13 17:54:55,030 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 3205 transitions. Word has length 15 [2021-11-13 17:54:55,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:54:55,032 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 3205 transitions. [2021-11-13 17:54:55,032 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 17:54:55,032 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 3205 transitions. [2021-11-13 17:54:55,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-13 17:54:55,033 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:54:55,033 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 17:54:55,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 17:54:55,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:54:55,245 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr28REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-13 17:54:55,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:54:55,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1248405209, now seen corresponding path program 1 times [2021-11-13 17:54:55,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:54:55,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2067602726] [2021-11-13 17:54:55,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:54:55,246 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:54:55,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:54:55,247 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:54:55,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 17:54:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:55,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:54:55,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:54:55,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:54:55,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:54:55,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:54:55,558 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:54:55,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2067602726] [2021-11-13 17:54:55,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2067602726] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:54:55,558 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:54:55,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 17:54:55,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415875724] [2021-11-13 17:54:55,559 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:54:55,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:54:55,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:54:55,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:54:55,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:54:55,560 INFO L87 Difference]: Start difference. First operand 2156 states and 3205 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 17:54:55,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:54:55,663 INFO L93 Difference]: Finished difference Result 2128 states and 3149 transitions. [2021-11-13 17:54:55,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:54:55,664 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 17:54:55,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:54:55,677 INFO L225 Difference]: With dead ends: 2128 [2021-11-13 17:54:55,677 INFO L226 Difference]: Without dead ends: 2128 [2021-11-13 17:54:55,678 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 17:54:55,679 INFO L933 BasicCegarLoop]: 1139 mSDtfsCounter, 1086 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 2416 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.95ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.01ms IncrementalHoareTripleChecker+Time [2021-11-13 17:54:55,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1093 Valid, 2416 Invalid, 64 Unknown, 0 Unchecked, 8.95ms Time], IncrementalHoareTripleChecker [32 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 48.01ms Time] [2021-11-13 17:54:55,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2128 states. [2021-11-13 17:54:55,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2128 to 2126. [2021-11-13 17:54:55,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2126 states, 1612 states have (on average 1.9218362282878412) internal successors, (3098), 2106 states have internal predecessors, (3098), 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 17:54:55,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2126 states to 2126 states and 3147 transitions. [2021-11-13 17:54:55,770 INFO L78 Accepts]: Start accepts. Automaton has 2126 states and 3147 transitions. Word has length 17 [2021-11-13 17:54:55,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:54:55,770 INFO L470 AbstractCegarLoop]: Abstraction has 2126 states and 3147 transitions. [2021-11-13 17:54:55,770 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 17:54:55,771 INFO L276 IsEmpty]: Start isEmpty. Operand 2126 states and 3147 transitions. [2021-11-13 17:54:55,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 17:54:55,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:54:55,773 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 17:54:55,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 17:54:55,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:54:55,984 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr42REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-13 17:54:55,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:54:55,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1848711161, now seen corresponding path program 1 times [2021-11-13 17:54:55,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:54:55,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157325753] [2021-11-13 17:54:55,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:54:55,986 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:54:55,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:54:55,987 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:54:56,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 17:54:56,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:56,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:54:56,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:54:56,229 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 17:54:56,324 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 17:54:56,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:54:56,428 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 17:54:56,428 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:54:56,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [157325753] [2021-11-13 17:54:56,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [157325753] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:54:56,429 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:54:56,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 17:54:56,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285999055] [2021-11-13 17:54:56,429 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:54:56,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:54:56,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:54:56,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:54:56,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:54:56,431 INFO L87 Difference]: Start difference. First operand 2126 states and 3147 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 17:55:00,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:55:00,391 INFO L93 Difference]: Finished difference Result 2754 states and 3940 transitions. [2021-11-13 17:55:00,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:55:00,391 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 17:55:00,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:55:00,408 INFO L225 Difference]: With dead ends: 2754 [2021-11-13 17:55:00,408 INFO L226 Difference]: Without dead ends: 2754 [2021-11-13 17:55:00,408 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 17:55:00,409 INFO L933 BasicCegarLoop]: 564 mSDtfsCounter, 2328 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3309.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2332 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.85ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3859.46ms IncrementalHoareTripleChecker+Time [2021-11-13 17:55:00,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2332 Valid, 1078 Invalid, 1098 Unknown, 0 Unchecked, 16.85ms Time], IncrementalHoareTripleChecker [43 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 3859.46ms Time] [2021-11-13 17:55:00,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2754 states. [2021-11-13 17:55:00,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2754 to 2122. [2021-11-13 17:55:00,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2122 states, 1612 states have (on average 1.9168734491315136) internal successors, (3090), 2102 states have internal predecessors, (3090), 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 17:55:00,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 3139 transitions. [2021-11-13 17:55:00,480 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 3139 transitions. Word has length 31 [2021-11-13 17:55:00,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:55:00,481 INFO L470 AbstractCegarLoop]: Abstraction has 2122 states and 3139 transitions. [2021-11-13 17:55:00,481 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 17:55:00,481 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 3139 transitions. [2021-11-13 17:55:00,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 17:55:00,482 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:55:00,482 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 17:55:00,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 17:55:00,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:55:00,717 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr43REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-13 17:55:00,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:55:00,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1848711160, now seen corresponding path program 1 times [2021-11-13 17:55:00,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:55:00,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780485620] [2021-11-13 17:55:00,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:55:00,718 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:55:00,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:55:00,720 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:55:00,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 17:55:00,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:00,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:55:00,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:55:00,975 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 17:55:01,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:55:01,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:55:01,666 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 17:55:01,666 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:55:01,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780485620] [2021-11-13 17:55:01,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780485620] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:55:01,666 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:55:01,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 17:55:01,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188169765] [2021-11-13 17:55:01,667 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:55:01,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:55:01,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:55:01,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:55:01,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:55:01,668 INFO L87 Difference]: Start difference. First operand 2122 states and 3139 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 17:55:10,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:55:10,758 INFO L93 Difference]: Finished difference Result 2375 states and 3288 transitions. [2021-11-13 17:55:10,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 17:55:10,759 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 17:55:10,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:55:10,772 INFO L225 Difference]: With dead ends: 2375 [2021-11-13 17:55:10,772 INFO L226 Difference]: Without dead ends: 2375 [2021-11-13 17:55:10,772 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 17:55:10,773 INFO L933 BasicCegarLoop]: 893 mSDtfsCounter, 1422 mSDsluCounter, 1482 mSDsCounter, 0 mSdLazyCounter, 1955 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7909.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 1977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.03ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8885.97ms IncrementalHoareTripleChecker+Time [2021-11-13 17:55:10,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1423 Valid, 2375 Invalid, 1977 Unknown, 0 Unchecked, 15.03ms Time], IncrementalHoareTripleChecker [22 Valid, 1955 Invalid, 0 Unknown, 0 Unchecked, 8885.97ms Time] [2021-11-13 17:55:10,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2021-11-13 17:55:10,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 2118. [2021-11-13 17:55:10,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2118 states, 1612 states have (on average 1.911910669975186) internal successors, (3082), 2098 states have internal predecessors, (3082), 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 17:55:10,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2118 states to 2118 states and 3131 transitions. [2021-11-13 17:55:10,829 INFO L78 Accepts]: Start accepts. Automaton has 2118 states and 3131 transitions. Word has length 31 [2021-11-13 17:55:10,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:55:10,829 INFO L470 AbstractCegarLoop]: Abstraction has 2118 states and 3131 transitions. [2021-11-13 17:55:10,830 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 17:55:10,830 INFO L276 IsEmpty]: Start isEmpty. Operand 2118 states and 3131 transitions. [2021-11-13 17:55:10,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-13 17:55:10,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:55:10,831 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 17:55:10,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-13 17:55:11,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:55:11,046 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-13 17:55:11,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:55:11,046 INFO L85 PathProgramCache]: Analyzing trace with hash -189672101, now seen corresponding path program 1 times [2021-11-13 17:55:11,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:55:11,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1949392673] [2021-11-13 17:55:11,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:55:11,047 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:55:11,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:55:11,049 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:55:11,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 17:55:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:11,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:55:11,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:55:11,400 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 17:55:11,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:55:11,516 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 17:55:11,516 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:55:11,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1949392673] [2021-11-13 17:55:11,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1949392673] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:55:11,517 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:55:11,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 17:55:11,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307983023] [2021-11-13 17:55:11,517 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:55:11,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:55:11,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:55:11,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:55:11,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:55:11,521 INFO L87 Difference]: Start difference. First operand 2118 states and 3131 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 17:55:11,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:55:11,593 INFO L93 Difference]: Finished difference Result 2106 states and 3111 transitions. [2021-11-13 17:55:11,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:55:11,593 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 17:55:11,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:55:11,608 INFO L225 Difference]: With dead ends: 2106 [2021-11-13 17:55:11,608 INFO L226 Difference]: Without dead ends: 2106 [2021-11-13 17:55:11,608 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 17:55:11,611 INFO L933 BasicCegarLoop]: 1133 mSDtfsCounter, 1062 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 2322 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.06ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.05ms IncrementalHoareTripleChecker+Time [2021-11-13 17:55:11,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1069 Valid, 2322 Invalid, 41 Unknown, 0 Unchecked, 6.06ms Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 39.05ms Time] [2021-11-13 17:55:11,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2021-11-13 17:55:11,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 2106. [2021-11-13 17:55:11,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2106 states, 1600 states have (on average 1.91375) internal successors, (3062), 2086 states have internal predecessors, (3062), 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 17:55:11,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 3111 transitions. [2021-11-13 17:55:11,662 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 3111 transitions. Word has length 46 [2021-11-13 17:55:11,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:55:11,663 INFO L470 AbstractCegarLoop]: Abstraction has 2106 states and 3111 transitions. [2021-11-13 17:55:11,663 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 17:55:11,663 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 3111 transitions. [2021-11-13 17:55:11,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-13 17:55:11,672 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:55:11,672 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 17:55:11,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 17:55:11,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:55:11,885 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-13 17:55:11,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:55:11,886 INFO L85 PathProgramCache]: Analyzing trace with hash 568275343, now seen corresponding path program 1 times [2021-11-13 17:55:11,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:55:11,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1751806856] [2021-11-13 17:55:11,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:55:11,887 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:55:11,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:55:11,888 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:55:11,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 17:55:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:12,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:55:12,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:55:12,535 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 17:55:12,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:55:12,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:55:12,892 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:55:12,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1751806856] [2021-11-13 17:55:12,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1751806856] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:55:12,892 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:55:12,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 17:55:12,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334809278] [2021-11-13 17:55:12,892 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:55:12,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:55:12,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:55:12,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:55:12,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:55:12,893 INFO L87 Difference]: Start difference. First operand 2106 states and 3111 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 17:55:12,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:55:12,986 INFO L93 Difference]: Finished difference Result 1922 states and 2756 transitions. [2021-11-13 17:55:12,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:55:12,987 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 17:55:12,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:55:12,998 INFO L225 Difference]: With dead ends: 1922 [2021-11-13 17:55:12,998 INFO L226 Difference]: Without dead ends: 1922 [2021-11-13 17:55:12,998 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 17:55:12,999 INFO L933 BasicCegarLoop]: 1141 mSDtfsCounter, 67 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.30ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78.63ms IncrementalHoareTripleChecker+Time [2021-11-13 17:55:13,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 2187 Invalid, 28 Unknown, 0 Unchecked, 2.30ms Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 78.63ms Time] [2021-11-13 17:55:13,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1922 states. [2021-11-13 17:55:13,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1922 to 1922. [2021-11-13 17:55:13,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1922 states, 1416 states have (on average 1.911723163841808) internal successors, (2707), 1902 states have internal predecessors, (2707), 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 17:55:13,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1922 states to 1922 states and 2756 transitions. [2021-11-13 17:55:13,042 INFO L78 Accepts]: Start accepts. Automaton has 1922 states and 2756 transitions. Word has length 54 [2021-11-13 17:55:13,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:55:13,044 INFO L470 AbstractCegarLoop]: Abstraction has 1922 states and 2756 transitions. [2021-11-13 17:55:13,045 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 17:55:13,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1922 states and 2756 transitions. [2021-11-13 17:55:13,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-13 17:55:13,046 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:55:13,047 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 17:55:13,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 17:55:13,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:55:13,260 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr61REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-13 17:55:13,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:55:13,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1377713038, now seen corresponding path program 1 times [2021-11-13 17:55:13,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:55:13,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1955414933] [2021-11-13 17:55:13,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:55:13,263 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:55:13,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:55:13,264 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:55:13,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 17:55:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:13,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 17:55:13,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:55:13,604 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 17:55:13,615 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 17:55:14,270 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-13 17:55:14,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2021-11-13 17:55:14,279 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-13 17:55:14,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-11-13 17:55:14,319 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 17:55:14,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:55:20,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:55:20,989 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:55:20,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1955414933] [2021-11-13 17:55:20,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1955414933] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:55:20,989 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:55:20,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 17:55:20,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673121065] [2021-11-13 17:55:20,989 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:55:20,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:55:20,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:55:20,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:55:20,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=15, Unknown=2, NotChecked=0, Total=30 [2021-11-13 17:55:20,991 INFO L87 Difference]: Start difference. First operand 1922 states and 2756 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 17:55:29,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:55:29,129 INFO L93 Difference]: Finished difference Result 2628 states and 3396 transitions. [2021-11-13 17:55:29,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:55:29,131 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 17:55:29,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:55:29,143 INFO L225 Difference]: With dead ends: 2628 [2021-11-13 17:55:29,143 INFO L226 Difference]: Without dead ends: 2628 [2021-11-13 17:55:29,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=13, Invalid=15, Unknown=2, NotChecked=0, Total=30 [2021-11-13 17:55:29,144 INFO L933 BasicCegarLoop]: 706 mSDtfsCounter, 2596 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 1598 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6988.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2603 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 3394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.64ms SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1698 IncrementalHoareTripleChecker+Unchecked, 8048.25ms IncrementalHoareTripleChecker+Time [2021-11-13 17:55:29,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2603 Valid, 1579 Invalid, 3394 Unknown, 0 Unchecked, 20.64ms Time], IncrementalHoareTripleChecker [98 Valid, 1598 Invalid, 0 Unknown, 1698 Unchecked, 8048.25ms Time] [2021-11-13 17:55:29,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2628 states. [2021-11-13 17:55:29,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2628 to 2017. [2021-11-13 17:55:29,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2017 states, 1543 states have (on average 1.863901490602722) internal successors, (2876), 1994 states have internal predecessors, (2876), 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 17:55:29,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2017 states to 2017 states and 2931 transitions. [2021-11-13 17:55:29,199 INFO L78 Accepts]: Start accepts. Automaton has 2017 states and 2931 transitions. Word has length 57 [2021-11-13 17:55:29,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:55:29,199 INFO L470 AbstractCegarLoop]: Abstraction has 2017 states and 2931 transitions. [2021-11-13 17:55:29,200 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 17:55:29,200 INFO L276 IsEmpty]: Start isEmpty. Operand 2017 states and 2931 transitions. [2021-11-13 17:55:29,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-13 17:55:29,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:55:29,201 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 17:55:29,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 17:55:29,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:55:29,415 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr63REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-13 17:55:29,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:55:29,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1132291757, now seen corresponding path program 1 times [2021-11-13 17:55:29,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:55:29,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [474437893] [2021-11-13 17:55:29,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:55:29,417 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:55:29,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:55:29,418 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:55:29,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 17:55:29,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:29,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:55:29,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:55:29,897 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 17:55:29,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:55:29,984 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 17:55:30,340 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 17:55:30,340 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:55:30,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [474437893] [2021-11-13 17:55:30,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [474437893] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:55:30,340 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:55:30,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 17:55:30,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145305467] [2021-11-13 17:55:30,341 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:55:30,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:55:30,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:55:30,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:55:30,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:55:30,342 INFO L87 Difference]: Start difference. First operand 2017 states and 2931 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 17:55:32,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:55:32,783 INFO L93 Difference]: Finished difference Result 2015 states and 2927 transitions. [2021-11-13 17:55:32,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:55:32,784 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 17:55:32,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:55:32,795 INFO L225 Difference]: With dead ends: 2015 [2021-11-13 17:55:32,795 INFO L226 Difference]: Without dead ends: 2015 [2021-11-13 17:55:32,796 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 17:55:32,796 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 1040 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2036.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.78ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2407.15ms IncrementalHoareTripleChecker+Time [2021-11-13 17:55:32,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1046 Valid, 723 Invalid, 628 Unknown, 0 Unchecked, 5.78ms Time], IncrementalHoareTripleChecker [20 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 2407.15ms Time] [2021-11-13 17:55:32,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2015 states. [2021-11-13 17:55:32,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2015 to 2015. [2021-11-13 17:55:32,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2015 states, 1543 states have (on average 1.8613091380427738) internal successors, (2872), 1992 states have internal predecessors, (2872), 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 17:55:32,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2015 states to 2015 states and 2927 transitions. [2021-11-13 17:55:32,838 INFO L78 Accepts]: Start accepts. Automaton has 2015 states and 2927 transitions. Word has length 59 [2021-11-13 17:55:32,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:55:32,839 INFO L470 AbstractCegarLoop]: Abstraction has 2015 states and 2927 transitions. [2021-11-13 17:55:32,839 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 17:55:32,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2015 states and 2927 transitions. [2021-11-13 17:55:32,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-13 17:55:32,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:55:32,840 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 17:55:32,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 17:55:33,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:55:33,053 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr66REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-13 17:55:33,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:55:33,054 INFO L85 PathProgramCache]: Analyzing trace with hash 569746658, now seen corresponding path program 1 times [2021-11-13 17:55:33,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:55:33,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773438134] [2021-11-13 17:55:33,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:55:33,055 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:55:33,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:55:33,056 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:55:33,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 17:55:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:33,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 17:55:33,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:55:33,463 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 17:55:33,475 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 17:55:33,534 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 17:55:33,551 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 17:55:33,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:55:33,716 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 17:55:33,716 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:55:33,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773438134] [2021-11-13 17:55:33,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773438134] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:55:33,717 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:55:33,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 17:55:33,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447062702] [2021-11-13 17:55:33,718 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:55:33,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:55:33,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:55:33,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:55:33,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:55:33,719 INFO L87 Difference]: Start difference. First operand 2015 states and 2927 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 17:55:37,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:55:37,651 INFO L93 Difference]: Finished difference Result 2014 states and 2925 transitions. [2021-11-13 17:55:37,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:55:37,652 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 17:55:37,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:55:37,662 INFO L225 Difference]: With dead ends: 2014 [2021-11-13 17:55:37,662 INFO L226 Difference]: Without dead ends: 2014 [2021-11-13 17:55:37,662 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 17:55:37,663 INFO L933 BasicCegarLoop]: 1103 mSDtfsCounter, 4 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 1588 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3305.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2829 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.06ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3858.31ms IncrementalHoareTripleChecker+Time [2021-11-13 17:55:37,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2829 Invalid, 1589 Unknown, 0 Unchecked, 11.06ms Time], IncrementalHoareTripleChecker [1 Valid, 1588 Invalid, 0 Unknown, 0 Unchecked, 3858.31ms Time] [2021-11-13 17:55:37,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2014 states. [2021-11-13 17:55:37,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2014 to 2014. [2021-11-13 17:55:37,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2014 states, 1543 states have (on average 1.8600129617627998) internal successors, (2870), 1991 states have internal predecessors, (2870), 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 17:55:37,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2014 states to 2014 states and 2925 transitions. [2021-11-13 17:55:37,710 INFO L78 Accepts]: Start accepts. Automaton has 2014 states and 2925 transitions. Word has length 62 [2021-11-13 17:55:37,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:55:37,711 INFO L470 AbstractCegarLoop]: Abstraction has 2014 states and 2925 transitions. [2021-11-13 17:55:37,711 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 17:55:37,711 INFO L276 IsEmpty]: Start isEmpty. Operand 2014 states and 2925 transitions. [2021-11-13 17:55:37,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-13 17:55:37,712 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:55:37,712 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 17:55:37,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-13 17:55:37,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:55:37,925 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr67REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-13 17:55:37,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:55:37,925 INFO L85 PathProgramCache]: Analyzing trace with hash 569746659, now seen corresponding path program 1 times [2021-11-13 17:55:37,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:55:37,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1210555364] [2021-11-13 17:55:37,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:55:37,926 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:55:37,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:55:37,927 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:55:37,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 17:55:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:38,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:55:38,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:55:38,253 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 17:55:38,274 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 17:55:38,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-13 17:55:38,343 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 17:55:38,346 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 17:55:38,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:55:38,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:55:38,711 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 17:55:38,712 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:55:38,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1210555364] [2021-11-13 17:55:38,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1210555364] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:55:38,712 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:55:38,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-13 17:55:38,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965923896] [2021-11-13 17:55:38,713 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:55:38,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:55:38,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:55:38,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:55:38,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:55:38,714 INFO L87 Difference]: Start difference. First operand 2014 states and 2925 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 17:55:49,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:55:49,842 INFO L93 Difference]: Finished difference Result 2013 states and 2923 transitions. [2021-11-13 17:55:49,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:55:49,843 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 17:55:49,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:55:49,852 INFO L225 Difference]: With dead ends: 2013 [2021-11-13 17:55:49,852 INFO L226 Difference]: Without dead ends: 2013 [2021-11-13 17:55:49,853 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 17:55:49,854 INFO L933 BasicCegarLoop]: 1103 mSDtfsCounter, 3 mSDsluCounter, 2188 mSDsCounter, 0 mSdLazyCounter, 2225 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9834.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3291 SdHoareTripleChecker+Invalid, 2227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.96ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11014.40ms IncrementalHoareTripleChecker+Time [2021-11-13 17:55:49,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 3291 Invalid, 2227 Unknown, 0 Unchecked, 14.96ms Time], IncrementalHoareTripleChecker [2 Valid, 2225 Invalid, 0 Unknown, 0 Unchecked, 11014.40ms Time] [2021-11-13 17:55:49,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2021-11-13 17:55:49,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 2013. [2021-11-13 17:55:49,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2013 states, 1541 states have (on average 1.8611291369240752) internal successors, (2868), 1990 states have internal predecessors, (2868), 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 17:55:49,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2013 states to 2013 states and 2923 transitions. [2021-11-13 17:55:49,894 INFO L78 Accepts]: Start accepts. Automaton has 2013 states and 2923 transitions. Word has length 62 [2021-11-13 17:55:49,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:55:49,895 INFO L470 AbstractCegarLoop]: Abstraction has 2013 states and 2923 transitions. [2021-11-13 17:55:49,895 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 17:55:49,895 INFO L276 IsEmpty]: Start isEmpty. Operand 2013 states and 2923 transitions. [2021-11-13 17:55:49,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-13 17:55:49,896 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:55:49,896 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 17:55:49,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-13 17:55:50,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:55:50,109 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-13 17:55:50,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:55:50,110 INFO L85 PathProgramCache]: Analyzing trace with hash -2036280663, now seen corresponding path program 1 times [2021-11-13 17:55:50,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:55:50,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1154269312] [2021-11-13 17:55:50,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:55:50,111 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:55:50,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:55:50,112 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:55:50,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 17:55:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:50,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:55:50,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:55:50,507 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 17:55:50,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:55:50,674 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 17:55:50,675 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:55:50,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1154269312] [2021-11-13 17:55:50,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1154269312] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:55:50,675 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:55:50,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 17:55:50,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922536483] [2021-11-13 17:55:50,675 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:55:50,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:55:50,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:55:50,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:55:50,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:55:50,688 INFO L87 Difference]: Start difference. First operand 2013 states and 2923 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 17:55:50,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:55:50,853 INFO L93 Difference]: Finished difference Result 2023 states and 2940 transitions. [2021-11-13 17:55:50,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:55:50,854 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 17:55:50,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:55:50,861 INFO L225 Difference]: With dead ends: 2023 [2021-11-13 17:55:50,861 INFO L226 Difference]: Without dead ends: 2023 [2021-11-13 17:55:50,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:55:50,862 INFO L933 BasicCegarLoop]: 1101 mSDtfsCounter, 9 mSDsluCounter, 3284 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 4385 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.13ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 114.37ms IncrementalHoareTripleChecker+Time [2021-11-13 17:55:50,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 4385 Invalid, 58 Unknown, 0 Unchecked, 4.13ms Time], IncrementalHoareTripleChecker [10 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 114.37ms Time] [2021-11-13 17:55:50,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2023 states. [2021-11-13 17:55:50,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2023 to 2023. [2021-11-13 17:55:50,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2023 states, 1549 states have (on average 1.8592640413169788) internal successors, (2880), 1999 states have internal predecessors, (2880), 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 17:55:50,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2023 states to 2023 states and 2940 transitions. [2021-11-13 17:55:50,903 INFO L78 Accepts]: Start accepts. Automaton has 2023 states and 2940 transitions. Word has length 70 [2021-11-13 17:55:50,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:55:50,904 INFO L470 AbstractCegarLoop]: Abstraction has 2023 states and 2940 transitions. [2021-11-13 17:55:50,904 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 17:55:50,905 INFO L276 IsEmpty]: Start isEmpty. Operand 2023 states and 2940 transitions. [2021-11-13 17:55:50,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-13 17:55:50,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:55:50,906 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 17:55:50,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-13 17:55:51,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:55:51,118 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-13 17:55:51,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:55:51,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1343773079, now seen corresponding path program 1 times [2021-11-13 17:55:51,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:55:51,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025679693] [2021-11-13 17:55:51,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:55:51,120 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:55:51,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:55:51,121 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:55:51,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-13 17:55:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:51,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:55:51,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:55:51,591 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 17:55:51,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:55:51,839 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 17:55:51,839 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:55:51,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1025679693] [2021-11-13 17:55:51,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1025679693] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:55:51,839 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:55:51,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-13 17:55:51,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7218859] [2021-11-13 17:55:51,839 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:55:51,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 17:55:51,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:55:51,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 17:55:51,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:55:51,840 INFO L87 Difference]: Start difference. First operand 2023 states and 2940 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 17:55:52,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:55:52,371 INFO L93 Difference]: Finished difference Result 2037 states and 2966 transitions. [2021-11-13 17:55:52,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 17:55:52,372 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 17:55:52,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:55:52,379 INFO L225 Difference]: With dead ends: 2037 [2021-11-13 17:55:52,379 INFO L226 Difference]: Without dead ends: 2033 [2021-11-13 17:55:52,380 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 17:55:52,380 INFO L933 BasicCegarLoop]: 1103 mSDtfsCounter, 24 mSDsluCounter, 6577 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 261.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 7680 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.74ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 308.01ms IncrementalHoareTripleChecker+Time [2021-11-13 17:55:52,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 7680 Invalid, 157 Unknown, 0 Unchecked, 7.74ms Time], IncrementalHoareTripleChecker [23 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 308.01ms Time] [2021-11-13 17:55:52,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2033 states. [2021-11-13 17:55:52,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2033 to 2029. [2021-11-13 17:55:52,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2029 states, 1555 states have (on average 1.8572347266881029) internal successors, (2888), 2005 states have internal predecessors, (2888), 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 17:55:52,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2029 states to 2029 states and 2948 transitions. [2021-11-13 17:55:52,449 INFO L78 Accepts]: Start accepts. Automaton has 2029 states and 2948 transitions. Word has length 72 [2021-11-13 17:55:52,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:55:52,450 INFO L470 AbstractCegarLoop]: Abstraction has 2029 states and 2948 transitions. [2021-11-13 17:55:52,450 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 17:55:52,450 INFO L276 IsEmpty]: Start isEmpty. Operand 2029 states and 2948 transitions. [2021-11-13 17:55:52,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-13 17:55:52,456 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:55:52,457 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 17:55:52,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-13 17:55:52,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:55:52,674 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-13 17:55:52,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:55:52,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1627356649, now seen corresponding path program 2 times [2021-11-13 17:55:52,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:55:52,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521373146] [2021-11-13 17:55:52,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 17:55:52,675 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:55:52,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:55:52,676 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:55:52,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-13 17:55:53,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 17:55:53,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:55:53,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 17:55:53,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:55:53,320 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 17:55:53,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:55:53,866 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 17:55:53,866 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:55:53,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521373146] [2021-11-13 17:55:53,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [521373146] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:55:53,869 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:55:53,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-13 17:55:53,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678845974] [2021-11-13 17:55:53,870 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:55:53,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 17:55:53,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:55:53,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 17:55:53,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-13 17:55:53,873 INFO L87 Difference]: Start difference. First operand 2029 states and 2948 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 17:55:55,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:55:55,576 INFO L93 Difference]: Finished difference Result 2057 states and 3010 transitions. [2021-11-13 17:55:55,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-13 17:55:55,576 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 17:55:55,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:55:55,582 INFO L225 Difference]: With dead ends: 2057 [2021-11-13 17:55:55,582 INFO L226 Difference]: Without dead ends: 2053 [2021-11-13 17:55:55,583 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 17:55:55,584 INFO L933 BasicCegarLoop]: 1107 mSDtfsCounter, 82 mSDsluCounter, 7718 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 695.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 8825 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.11ms SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 797.47ms IncrementalHoareTripleChecker+Time [2021-11-13 17:55:55,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 8825 Invalid, 470 Unknown, 0 Unchecked, 9.11ms Time], IncrementalHoareTripleChecker [89 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 797.47ms Time] [2021-11-13 17:55:55,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2053 states. [2021-11-13 17:55:55,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2053 to 2041. [2021-11-13 17:55:55,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2041 states, 1567 states have (on average 1.853222718570517) internal successors, (2904), 2017 states have internal predecessors, (2904), 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 17:55:55,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2041 states to 2041 states and 2964 transitions. [2021-11-13 17:55:55,624 INFO L78 Accepts]: Start accepts. Automaton has 2041 states and 2964 transitions. Word has length 76 [2021-11-13 17:55:55,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:55:55,624 INFO L470 AbstractCegarLoop]: Abstraction has 2041 states and 2964 transitions. [2021-11-13 17:55:55,624 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 17:55:55,625 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 2964 transitions. [2021-11-13 17:55:55,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-13 17:55:55,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:55:55,626 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 17:55:55,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-13 17:55:55,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:55:55,841 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-13 17:55:55,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:55:55,842 INFO L85 PathProgramCache]: Analyzing trace with hash -790106903, now seen corresponding path program 3 times [2021-11-13 17:55:55,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:55:55,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71736805] [2021-11-13 17:55:55,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 17:55:55,842 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:55:55,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:55:55,843 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:55:55,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-13 17:55:56,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-13 17:55:56,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:55:56,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 17:55:56,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:55:57,129 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 17:55:57,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:55:59,016 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 17:55:59,017 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:55:59,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71736805] [2021-11-13 17:55:59,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71736805] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:55:59,017 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:55:59,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-13 17:55:59,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054249643] [2021-11-13 17:55:59,018 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:55:59,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-13 17:55:59,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:55:59,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-13 17:55:59,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-13 17:55:59,020 INFO L87 Difference]: Start difference. First operand 2041 states and 2964 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 17:56:08,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:56:08,746 INFO L93 Difference]: Finished difference Result 2097 states and 3128 transitions. [2021-11-13 17:56:08,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-13 17:56:08,747 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 17:56:08,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:56:08,754 INFO L225 Difference]: With dead ends: 2097 [2021-11-13 17:56:08,754 INFO L226 Difference]: Without dead ends: 2091 [2021-11-13 17:56:08,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-13 17:56:08,757 INFO L933 BasicCegarLoop]: 1113 mSDtfsCounter, 231 mSDsluCounter, 17711 mSDsCounter, 0 mSdLazyCounter, 1645 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3132.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 18824 SdHoareTripleChecker+Invalid, 1866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.74ms SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 1645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3555.63ms IncrementalHoareTripleChecker+Time [2021-11-13 17:56:08,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 18824 Invalid, 1866 Unknown, 0 Unchecked, 26.74ms Time], IncrementalHoareTripleChecker [221 Valid, 1645 Invalid, 0 Unknown, 0 Unchecked, 3555.63ms Time] [2021-11-13 17:56:08,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2091 states. [2021-11-13 17:56:08,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2091 to 2065. [2021-11-13 17:56:08,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2065 states, 1591 states have (on average 1.8447517284726587) internal successors, (2935), 2041 states have internal predecessors, (2935), 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 17:56:08,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2065 states to 2065 states and 2995 transitions. [2021-11-13 17:56:08,811 INFO L78 Accepts]: Start accepts. Automaton has 2065 states and 2995 transitions. Word has length 84 [2021-11-13 17:56:08,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:56:08,812 INFO L470 AbstractCegarLoop]: Abstraction has 2065 states and 2995 transitions. [2021-11-13 17:56:08,812 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 17:56:08,812 INFO L276 IsEmpty]: Start isEmpty. Operand 2065 states and 2995 transitions. [2021-11-13 17:56:08,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-13 17:56:08,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:56:08,813 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 17:56:08,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-13 17:56:09,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:56:09,032 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-13 17:56:09,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:56:09,032 INFO L85 PathProgramCache]: Analyzing trace with hash -870593815, now seen corresponding path program 4 times [2021-11-13 17:56:09,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:56:09,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [662131066] [2021-11-13 17:56:09,033 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 17:56:09,033 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:56:09,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:56:09,034 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:56:09,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-13 17:56:09,353 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 17:56:09,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:56:09,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-13 17:56:09,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:56:10,639 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 17:56:10,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:56:15,062 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 17:56:15,063 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:56:15,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [662131066] [2021-11-13 17:56:15,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [662131066] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:56:15,063 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:56:15,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-13 17:56:15,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208457540] [2021-11-13 17:56:15,064 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:56:15,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-13 17:56:15,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:56:15,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-13 17:56:15,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-13 17:56:15,068 INFO L87 Difference]: Start difference. First operand 2065 states and 2995 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 17:56:33,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:56:33,492 INFO L93 Difference]: Finished difference Result 2157 states and 3231 transitions. [2021-11-13 17:56:33,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-13 17:56:33,493 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 17:56:33,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:56:33,500 INFO L225 Difference]: With dead ends: 2157 [2021-11-13 17:56:33,500 INFO L226 Difference]: Without dead ends: 2153 [2021-11-13 17:56:33,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-13 17:56:33,510 INFO L933 BasicCegarLoop]: 1130 mSDtfsCounter, 302 mSDsluCounter, 40349 mSDsCounter, 0 mSdLazyCounter, 5359 mSolverCounterSat, 516 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9826.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 41479 SdHoareTripleChecker+Invalid, 5875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 67.17ms SdHoareTripleChecker+Time, 516 IncrementalHoareTripleChecker+Valid, 5359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11059.17ms IncrementalHoareTripleChecker+Time [2021-11-13 17:56:33,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 41479 Invalid, 5875 Unknown, 0 Unchecked, 67.17ms Time], IncrementalHoareTripleChecker [516 Valid, 5359 Invalid, 0 Unknown, 0 Unchecked, 11059.17ms Time] [2021-11-13 17:56:33,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2021-11-13 17:56:33,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2095. [2021-11-13 17:56:33,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2095 states, 1621 states have (on average 1.838988278840222) internal successors, (2981), 2071 states have internal predecessors, (2981), 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 17:56:33,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2095 states to 2095 states and 3041 transitions. [2021-11-13 17:56:33,565 INFO L78 Accepts]: Start accepts. Automaton has 2095 states and 3041 transitions. Word has length 100 [2021-11-13 17:56:33,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:56:33,566 INFO L470 AbstractCegarLoop]: Abstraction has 2095 states and 3041 transitions. [2021-11-13 17:56:33,566 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 17:56:33,566 INFO L276 IsEmpty]: Start isEmpty. Operand 2095 states and 3041 transitions. [2021-11-13 17:56:33,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-13 17:56:33,568 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:56:33,568 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 17:56:33,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-13 17:56:33,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:56:33,795 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-13 17:56:33,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:56:33,795 INFO L85 PathProgramCache]: Analyzing trace with hash -22317783, now seen corresponding path program 5 times [2021-11-13 17:56:33,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:56:33,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1568004517] [2021-11-13 17:56:33,797 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 17:56:33,797 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:56:33,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:56:33,798 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:56:33,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8d944d-2db7-41f8-865a-9c3ebbf76a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-13 17:56:35,173 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-13 17:56:35,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:56:35,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-13 17:56:35,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:56:35,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 17:56:35,447 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-13 17:56:35,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-11-13 17:56:35,520 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 17:56:35,744 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 [2021-11-13 18:08:24,759 WARN L227 SmtUtils]: Spent 5.69s on a formula simplification that was a NOOP. DAG size: 90 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)