./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL --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 2bd23b8476745cc5eeb44766af6c01d42c768ef8188ecd9b3f71230eca21db6b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:30:16,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:30:16,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:30:16,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:30:16,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:30:16,818 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:30:16,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:30:16,824 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:30:16,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:30:16,829 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:30:16,831 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:30:16,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:30:16,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:30:16,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:30:16,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:30:16,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:30:16,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:30:16,843 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:30:16,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:30:16,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:30:16,853 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:30:16,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:30:16,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:30:16,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:30:16,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:30:16,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:30:16,867 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:30:16,869 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:30:16,870 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:30:16,872 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:30:16,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:30:16,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:30:16,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:30:16,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:30:16,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:30:16,880 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:30:16,881 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:30:16,882 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:30:16,882 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:30:16,884 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:30:16,885 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:30:16,887 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-19 05:30:16,918 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:30:16,919 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:30:16,920 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:30:16,920 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:30:16,921 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:30:16,921 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:30:16,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:30:16,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:30:16,923 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:30:16,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:30:16,924 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:30:16,925 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 05:30:16,925 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:30:16,925 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:30:16,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:30:16,926 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 05:30:16,926 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 05:30:16,927 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 05:30:16,927 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:30:16,927 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 05:30:16,928 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:30:16,928 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:30:16,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:30:16,929 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:30:16,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:30:16,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:30:16,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:30:16,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:30:16,931 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:30:16,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:30:16,932 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:30:16,932 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_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bd23b8476745cc5eeb44766af6c01d42c768ef8188ecd9b3f71230eca21db6b [2021-11-19 05:30:17,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:30:17,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:30:17,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:30:17,390 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:30:17,391 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:30:17,393 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i [2021-11-19 05:30:17,493 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/data/74635064c/ead53b90024c4ab08ac3214964c1565f/FLAG71869623a [2021-11-19 05:30:18,344 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:30:18,344 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i [2021-11-19 05:30:18,382 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/data/74635064c/ead53b90024c4ab08ac3214964c1565f/FLAG71869623a [2021-11-19 05:30:18,528 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/data/74635064c/ead53b90024c4ab08ac3214964c1565f [2021-11-19 05:30:18,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:30:18,533 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 05:30:18,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:30:18,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:30:18,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:30:18,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:30:18" (1/1) ... [2021-11-19 05:30:18,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6be972ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:30:18, skipping insertion in model container [2021-11-19 05:30:18,544 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:30:18" (1/1) ... [2021-11-19 05:30:18,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:30:18,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:30:19,021 WARN L230 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_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[22673,22686] [2021-11-19 05:30:19,027 WARN L230 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_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[22743,22756] [2021-11-19 05:30:19,028 WARN L230 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_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[22807,22820] [2021-11-19 05:30:19,030 WARN L230 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_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[22902,22915] [2021-11-19 05:30:19,032 WARN L230 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_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[22974,22987] [2021-11-19 05:30:19,034 WARN L230 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_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[23113,23126] [2021-11-19 05:30:19,035 WARN L230 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_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[23187,23200] [2021-11-19 05:30:19,044 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:30:19,055 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:30:19,102 WARN L230 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_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[22673,22686] [2021-11-19 05:30:19,103 WARN L230 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_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[22743,22756] [2021-11-19 05:30:19,104 WARN L230 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_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[22807,22820] [2021-11-19 05:30:19,106 WARN L230 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_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[22902,22915] [2021-11-19 05:30:19,107 WARN L230 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_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[22974,22987] [2021-11-19 05:30:19,108 WARN L230 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_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[23113,23126] [2021-11-19 05:30:19,122 WARN L230 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_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[23187,23200] [2021-11-19 05:30:19,127 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:30:19,177 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:30:19,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:30:19 WrapperNode [2021-11-19 05:30:19,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:30:19,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:30:19,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:30:19,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:30:19,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:30:19" (1/1) ... [2021-11-19 05:30:19,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:30:19" (1/1) ... [2021-11-19 05:30:19,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:30:19" (1/1) ... [2021-11-19 05:30:19,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:30:19" (1/1) ... [2021-11-19 05:30:19,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:30:19" (1/1) ... [2021-11-19 05:30:19,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:30:19" (1/1) ... [2021-11-19 05:30:19,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:30:19" (1/1) ... [2021-11-19 05:30:19,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:30:19,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:30:19,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:30:19,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:30:19,344 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:30:19" (1/1) ... [2021-11-19 05:30:19,354 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:30:19,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:30:19,388 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:30:19,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:30:19,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-19 05:30:19,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:30:19,458 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-19 05:30:19,458 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-19 05:30:19,458 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-19 05:30:19,458 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-19 05:30:19,459 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-19 05:30:19,459 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-19 05:30:19,459 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-19 05:30:19,459 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-19 05:30:19,460 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-19 05:30:19,460 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-19 05:30:19,460 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-19 05:30:19,460 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-19 05:30:19,460 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-19 05:30:19,461 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-19 05:30:19,462 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-19 05:30:19,462 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-19 05:30:19,462 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-19 05:30:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-19 05:30:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-19 05:30:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-19 05:30:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-19 05:30:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-19 05:30:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-19 05:30:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-19 05:30:19,466 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-19 05:30:19,466 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-19 05:30:19,467 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-19 05:30:19,467 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-19 05:30:19,467 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-19 05:30:19,467 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-19 05:30:19,468 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-19 05:30:19,468 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-19 05:30:19,468 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-19 05:30:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-19 05:30:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-19 05:30:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-19 05:30:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-19 05:30:19,471 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-19 05:30:19,471 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-19 05:30:19,471 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-19 05:30:19,472 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-19 05:30:19,472 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-19 05:30:19,472 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-19 05:30:19,472 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-19 05:30:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-19 05:30:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-19 05:30:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-19 05:30:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-19 05:30:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-19 05:30:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-19 05:30:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-19 05:30:19,476 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-19 05:30:19,476 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-19 05:30:19,478 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-19 05:30:19,478 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-19 05:30:19,478 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-19 05:30:19,478 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-11-19 05:30:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-19 05:30:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-19 05:30:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-19 05:30:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-19 05:30:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-19 05:30:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-19 05:30:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-19 05:30:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-19 05:30:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-19 05:30:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-19 05:30:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-19 05:30:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-19 05:30:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-19 05:30:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-19 05:30:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-19 05:30:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-19 05:30:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-19 05:30:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-19 05:30:19,484 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-19 05:30:19,484 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-19 05:30:19,484 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-19 05:30:19,484 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-19 05:30:19,484 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-19 05:30:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-19 05:30:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-19 05:30:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-19 05:30:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-19 05:30:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-19 05:30:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-19 05:30:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-19 05:30:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-19 05:30:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-19 05:30:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-19 05:30:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-19 05:30:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-19 05:30:19,488 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-19 05:30:19,488 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-19 05:30:19,488 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-19 05:30:19,488 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-19 05:30:19,488 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-19 05:30:19,489 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-19 05:30:19,489 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-19 05:30:19,489 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-19 05:30:19,489 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-19 05:30:19,489 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-19 05:30:19,490 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-19 05:30:19,490 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-19 05:30:19,490 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-19 05:30:19,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-19 05:30:19,490 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-19 05:30:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-19 05:30:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-19 05:30:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-19 05:30:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:30:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-19 05:30:19,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 05:30:19,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 05:30:19,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 05:30:19,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 05:30:19,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 05:30:19,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 05:30:19,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-19 05:30:19,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 05:30:19,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:30:19,780 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:30:19,783 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:30:20,522 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:30:20,538 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:30:20,539 INFO L301 CfgBuilder]: Removed 17 assume(true) statements. [2021-11-19 05:30:20,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:30:20 BoogieIcfgContainer [2021-11-19 05:30:20,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:30:20,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:30:20,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:30:20,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:30:20,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:30:18" (1/3) ... [2021-11-19 05:30:20,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756f8b1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:30:20, skipping insertion in model container [2021-11-19 05:30:20,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:30:19" (2/3) ... [2021-11-19 05:30:20,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756f8b1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:30:20, skipping insertion in model container [2021-11-19 05:30:20,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:30:20" (3/3) ... [2021-11-19 05:30:20,561 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-2.i [2021-11-19 05:30:20,597 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:30:20,598 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 80 error locations. [2021-11-19 05:30:20,672 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:30:20,685 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 [2021-11-19 05:30:20,686 INFO L340 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2021-11-19 05:30:20,724 INFO L276 IsEmpty]: Start isEmpty. Operand has 176 states, 91 states have (on average 2.208791208791209) internal successors, (201), 171 states have internal predecessors, (201), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:30:20,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 05:30:20,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:30:20,756 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:30:20,757 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-11-19 05:30:20,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:30:20,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1606277154, now seen corresponding path program 1 times [2021-11-19 05:30:20,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:30:20,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385282345] [2021-11-19 05:30:20,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:20,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:30:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:21,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:30:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:21,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:30:21,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:30:21,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385282345] [2021-11-19 05:30:21,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385282345] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:30:21,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:30:21,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:30:21,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822722118] [2021-11-19 05:30:21,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:30:21,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:30:21,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:30:21,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:30:21,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:30:21,157 INFO L87 Difference]: Start difference. First operand has 176 states, 91 states have (on average 2.208791208791209) internal successors, (201), 171 states have internal predecessors, (201), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:21,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:30:21,533 INFO L93 Difference]: Finished difference Result 203 states and 210 transitions. [2021-11-19 05:30:21,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:30:21,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-19 05:30:21,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:30:21,558 INFO L225 Difference]: With dead ends: 203 [2021-11-19 05:30:21,558 INFO L226 Difference]: Without dead ends: 200 [2021-11-19 05:30:21,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:30:21,568 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 348 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:30:21,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 107 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:30:21,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-19 05:30:21,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 174. [2021-11-19 05:30:21,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 94 states have (on average 1.9042553191489362) internal successors, (179), 170 states have internal predecessors, (179), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:21,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 182 transitions. [2021-11-19 05:30:21,640 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 182 transitions. Word has length 7 [2021-11-19 05:30:21,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:30:21,641 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 182 transitions. [2021-11-19 05:30:21,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:21,642 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 182 transitions. [2021-11-19 05:30:21,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 05:30:21,643 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:30:21,643 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:30:21,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 05:30:21,644 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-11-19 05:30:21,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:30:21,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1606277155, now seen corresponding path program 1 times [2021-11-19 05:30:21,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:30:21,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885696048] [2021-11-19 05:30:21,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:21,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:30:21,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:21,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:30:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:21,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:30:21,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:30:21,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885696048] [2021-11-19 05:30:21,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885696048] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:30:21,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:30:21,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:30:21,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673318241] [2021-11-19 05:30:21,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:30:21,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:30:21,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:30:21,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:30:21,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:30:21,746 INFO L87 Difference]: Start difference. First operand 174 states and 182 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:22,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:30:22,013 INFO L93 Difference]: Finished difference Result 170 states and 177 transitions. [2021-11-19 05:30:22,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:30:22,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-19 05:30:22,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:30:22,016 INFO L225 Difference]: With dead ends: 170 [2021-11-19 05:30:22,017 INFO L226 Difference]: Without dead ends: 170 [2021-11-19 05:30:22,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:30:22,019 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 325 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:30:22,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 100 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:30:22,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-11-19 05:30:22,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-11-19 05:30:22,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 94 states have (on average 1.851063829787234) internal successors, (174), 166 states have internal predecessors, (174), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:22,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 177 transitions. [2021-11-19 05:30:22,036 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 177 transitions. Word has length 7 [2021-11-19 05:30:22,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:30:22,037 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 177 transitions. [2021-11-19 05:30:22,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:22,037 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 177 transitions. [2021-11-19 05:30:22,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 05:30:22,038 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:30:22,038 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:30:22,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 05:30:22,038 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-11-19 05:30:22,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:30:22,039 INFO L85 PathProgramCache]: Analyzing trace with hash 518588134, now seen corresponding path program 1 times [2021-11-19 05:30:22,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:30:22,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194050420] [2021-11-19 05:30:22,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:22,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:30:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:22,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:30:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:22,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:30:22,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:30:22,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194050420] [2021-11-19 05:30:22,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194050420] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:30:22,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:30:22,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:30:22,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211486240] [2021-11-19 05:30:22,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:30:22,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:30:22,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:30:22,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:30:22,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:30:22,176 INFO L87 Difference]: Start difference. First operand 170 states and 177 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:22,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:30:22,428 INFO L93 Difference]: Finished difference Result 166 states and 172 transitions. [2021-11-19 05:30:22,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:30:22,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 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 11 [2021-11-19 05:30:22,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:30:22,436 INFO L225 Difference]: With dead ends: 166 [2021-11-19 05:30:22,436 INFO L226 Difference]: Without dead ends: 166 [2021-11-19 05:30:22,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:30:22,441 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 298 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:30:22,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 105 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:30:22,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-19 05:30:22,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2021-11-19 05:30:22,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 95 states have (on average 1.7789473684210526) internal successors, (169), 160 states have internal predecessors, (169), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:22,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 172 transitions. [2021-11-19 05:30:22,483 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 172 transitions. Word has length 11 [2021-11-19 05:30:22,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:30:22,484 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 172 transitions. [2021-11-19 05:30:22,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:22,485 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 172 transitions. [2021-11-19 05:30:22,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 05:30:22,487 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:30:22,487 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:30:22,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 05:30:22,488 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-11-19 05:30:22,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:30:22,490 INFO L85 PathProgramCache]: Analyzing trace with hash 518588135, now seen corresponding path program 1 times [2021-11-19 05:30:22,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:30:22,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225251517] [2021-11-19 05:30:22,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:22,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:30:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:22,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:30:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:22,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:30:22,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:30:22,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225251517] [2021-11-19 05:30:22,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225251517] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:30:22,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:30:22,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:30:22,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931216406] [2021-11-19 05:30:22,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:30:22,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:30:22,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:30:22,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:30:22,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:30:22,654 INFO L87 Difference]: Start difference. First operand 164 states and 172 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:22,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:30:22,916 INFO L93 Difference]: Finished difference Result 181 states and 187 transitions. [2021-11-19 05:30:22,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:30:22,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 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 11 [2021-11-19 05:30:22,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:30:22,918 INFO L225 Difference]: With dead ends: 181 [2021-11-19 05:30:22,918 INFO L226 Difference]: Without dead ends: 181 [2021-11-19 05:30:22,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:30:22,920 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 313 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:30:22,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 105 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:30:22,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-19 05:30:22,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 168. [2021-11-19 05:30:22,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 102 states have (on average 1.696078431372549) internal successors, (173), 164 states have internal predecessors, (173), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:22,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 176 transitions. [2021-11-19 05:30:22,949 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 176 transitions. Word has length 11 [2021-11-19 05:30:22,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:30:22,949 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 176 transitions. [2021-11-19 05:30:22,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:22,950 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 176 transitions. [2021-11-19 05:30:22,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 05:30:22,951 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:30:22,951 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:30:22,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 05:30:22,953 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr12REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-11-19 05:30:22,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:30:22,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1815811023, now seen corresponding path program 1 times [2021-11-19 05:30:22,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:30:22,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977535453] [2021-11-19 05:30:22,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:22,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:30:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:23,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:30:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:23,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:30:23,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:30:23,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977535453] [2021-11-19 05:30:23,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977535453] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:30:23,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:30:23,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 05:30:23,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559993709] [2021-11-19 05:30:23,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:30:23,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:30:23,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:30:23,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:30:23,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:30:23,109 INFO L87 Difference]: Start difference. First operand 168 states and 176 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:23,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:30:23,437 INFO L93 Difference]: Finished difference Result 168 states and 178 transitions. [2021-11-19 05:30:23,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:30:23,438 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 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 [2021-11-19 05:30:23,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:30:23,439 INFO L225 Difference]: With dead ends: 168 [2021-11-19 05:30:23,440 INFO L226 Difference]: Without dead ends: 168 [2021-11-19 05:30:23,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:30:23,452 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 374 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:30:23,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 85 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:30:23,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-11-19 05:30:23,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 155. [2021-11-19 05:30:23,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 104 states have (on average 1.5576923076923077) internal successors, (162), 151 states have internal predecessors, (162), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:23,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 165 transitions. [2021-11-19 05:30:23,461 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 165 transitions. Word has length 17 [2021-11-19 05:30:23,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:30:23,462 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 165 transitions. [2021-11-19 05:30:23,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:23,462 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 165 transitions. [2021-11-19 05:30:23,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 05:30:23,463 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:30:23,463 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:30:23,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 05:30:23,464 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr13REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-11-19 05:30:23,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:30:23,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1815811024, now seen corresponding path program 1 times [2021-11-19 05:30:23,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:30:23,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487470701] [2021-11-19 05:30:23,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:23,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:30:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:23,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:30:23,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:23,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:30:23,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:30:23,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487470701] [2021-11-19 05:30:23,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487470701] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:30:23,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:30:23,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 05:30:23,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462066660] [2021-11-19 05:30:23,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:30:23,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:30:23,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:30:23,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:30:23,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:30:23,569 INFO L87 Difference]: Start difference. First operand 155 states and 165 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:23,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:30:23,987 INFO L93 Difference]: Finished difference Result 197 states and 207 transitions. [2021-11-19 05:30:23,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:30:23,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 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 [2021-11-19 05:30:23,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:30:23,989 INFO L225 Difference]: With dead ends: 197 [2021-11-19 05:30:23,989 INFO L226 Difference]: Without dead ends: 197 [2021-11-19 05:30:23,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:30:23,991 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 384 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:30:23,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 90 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 05:30:23,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-11-19 05:30:23,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 165. [2021-11-19 05:30:23,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 115 states have (on average 1.5217391304347827) internal successors, (175), 161 states have internal predecessors, (175), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:24,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 178 transitions. [2021-11-19 05:30:24,000 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 178 transitions. Word has length 17 [2021-11-19 05:30:24,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:30:24,001 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 178 transitions. [2021-11-19 05:30:24,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:24,001 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 178 transitions. [2021-11-19 05:30:24,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-19 05:30:24,002 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:30:24,003 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:30:24,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 05:30:24,003 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr45ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-11-19 05:30:24,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:30:24,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1237724066, now seen corresponding path program 1 times [2021-11-19 05:30:24,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:30:24,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690453293] [2021-11-19 05:30:24,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:24,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:30:24,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:24,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:30:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:24,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:30:24,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:30:24,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690453293] [2021-11-19 05:30:24,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690453293] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:30:24,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:30:24,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:30:24,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422859433] [2021-11-19 05:30:24,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:30:24,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:30:24,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:30:24,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:30:24,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:30:24,084 INFO L87 Difference]: Start difference. First operand 165 states and 178 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:24,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:30:24,528 INFO L93 Difference]: Finished difference Result 206 states and 216 transitions. [2021-11-19 05:30:24,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:30:24,529 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 2 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 19 [2021-11-19 05:30:24,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:30:24,533 INFO L225 Difference]: With dead ends: 206 [2021-11-19 05:30:24,533 INFO L226 Difference]: Without dead ends: 206 [2021-11-19 05:30:24,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:30:24,535 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 502 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:30:24,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [502 Valid, 95 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 05:30:24,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-19 05:30:24,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 166. [2021-11-19 05:30:24,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 117 states have (on average 1.5042735042735043) internal successors, (176), 162 states have internal predecessors, (176), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:24,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 179 transitions. [2021-11-19 05:30:24,547 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 179 transitions. Word has length 19 [2021-11-19 05:30:24,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:30:24,548 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 179 transitions. [2021-11-19 05:30:24,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:24,549 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 179 transitions. [2021-11-19 05:30:24,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 05:30:24,556 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:30:24,556 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] [2021-11-19 05:30:24,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 05:30:24,557 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr16REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-11-19 05:30:24,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:30:24,558 INFO L85 PathProgramCache]: Analyzing trace with hash -286893983, now seen corresponding path program 1 times [2021-11-19 05:30:24,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:30:24,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435393383] [2021-11-19 05:30:24,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:24,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:30:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:24,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:30:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:24,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:30:24,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:30:24,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435393383] [2021-11-19 05:30:24,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435393383] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:30:24,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:30:24,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:30:24,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956605568] [2021-11-19 05:30:24,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:30:24,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:30:24,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:30:24,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:30:24,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:30:24,692 INFO L87 Difference]: Start difference. First operand 166 states and 179 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:25,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:30:25,147 INFO L93 Difference]: Finished difference Result 165 states and 177 transitions. [2021-11-19 05:30:25,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:30:25,148 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 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 20 [2021-11-19 05:30:25,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:30:25,149 INFO L225 Difference]: With dead ends: 165 [2021-11-19 05:30:25,150 INFO L226 Difference]: Without dead ends: 165 [2021-11-19 05:30:25,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:30:25,151 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 145 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:30:25,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 149 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 05:30:25,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-19 05:30:25,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2021-11-19 05:30:25,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 117 states have (on average 1.4871794871794872) internal successors, (174), 161 states have internal predecessors, (174), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:25,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 177 transitions. [2021-11-19 05:30:25,159 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 177 transitions. Word has length 20 [2021-11-19 05:30:25,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:30:25,159 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 177 transitions. [2021-11-19 05:30:25,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:25,160 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 177 transitions. [2021-11-19 05:30:25,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 05:30:25,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:30:25,161 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] [2021-11-19 05:30:25,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-19 05:30:25,161 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr17REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-11-19 05:30:25,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:30:25,162 INFO L85 PathProgramCache]: Analyzing trace with hash -286893982, now seen corresponding path program 1 times [2021-11-19 05:30:25,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:30:25,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106894814] [2021-11-19 05:30:25,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:25,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:30:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:25,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:30:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:25,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:30:25,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:30:25,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106894814] [2021-11-19 05:30:25,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106894814] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:30:25,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:30:25,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:30:25,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311481554] [2021-11-19 05:30:25,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:30:25,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:30:25,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:30:25,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:30:25,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:30:25,265 INFO L87 Difference]: Start difference. First operand 165 states and 177 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:25,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:30:25,753 INFO L93 Difference]: Finished difference Result 164 states and 175 transitions. [2021-11-19 05:30:25,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 05:30:25,754 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 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 20 [2021-11-19 05:30:25,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:30:25,755 INFO L225 Difference]: With dead ends: 164 [2021-11-19 05:30:25,755 INFO L226 Difference]: Without dead ends: 164 [2021-11-19 05:30:25,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-19 05:30:25,756 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 139 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:30:25,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 150 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 05:30:25,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-19 05:30:25,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2021-11-19 05:30:25,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 117 states have (on average 1.4700854700854702) internal successors, (172), 160 states have internal predecessors, (172), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:25,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 175 transitions. [2021-11-19 05:30:25,763 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 175 transitions. Word has length 20 [2021-11-19 05:30:25,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:30:25,763 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 175 transitions. [2021-11-19 05:30:25,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:25,763 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 175 transitions. [2021-11-19 05:30:25,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-19 05:30:25,764 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:30:25,765 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] [2021-11-19 05:30:25,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-19 05:30:25,765 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr48ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-11-19 05:30:25,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:30:25,766 INFO L85 PathProgramCache]: Analyzing trace with hash 747489610, now seen corresponding path program 1 times [2021-11-19 05:30:25,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:30:25,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111718908] [2021-11-19 05:30:25,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:25,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:30:25,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:26,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:30:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:26,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:30:26,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:30:26,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111718908] [2021-11-19 05:30:26,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111718908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:30:26,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:30:26,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 05:30:26,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249368449] [2021-11-19 05:30:26,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:30:26,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 05:30:26,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:30:26,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 05:30:26,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:30:26,028 INFO L87 Difference]: Start difference. First operand 164 states and 175 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:26,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:30:26,866 INFO L93 Difference]: Finished difference Result 218 states and 233 transitions. [2021-11-19 05:30:26,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 05:30:26,867 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (2), 2 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 22 [2021-11-19 05:30:26,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:30:26,869 INFO L225 Difference]: With dead ends: 218 [2021-11-19 05:30:26,869 INFO L226 Difference]: Without dead ends: 218 [2021-11-19 05:30:26,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-11-19 05:30:26,871 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 531 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 05:30:26,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 113 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 05:30:26,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-19 05:30:26,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 169. [2021-11-19 05:30:26,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 122 states have (on average 1.4508196721311475) internal successors, (177), 165 states have internal predecessors, (177), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:26,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 180 transitions. [2021-11-19 05:30:26,882 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 180 transitions. Word has length 22 [2021-11-19 05:30:26,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:30:26,882 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 180 transitions. [2021-11-19 05:30:26,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:26,883 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 180 transitions. [2021-11-19 05:30:26,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 05:30:26,884 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:30:26,884 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:30:26,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-19 05:30:26,885 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr20REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-11-19 05:30:26,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:30:26,886 INFO L85 PathProgramCache]: Analyzing trace with hash -379934429, now seen corresponding path program 1 times [2021-11-19 05:30:26,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:30:26,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826080623] [2021-11-19 05:30:26,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:26,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:30:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:27,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:30:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:27,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:30:27,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:30:27,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826080623] [2021-11-19 05:30:27,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826080623] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:30:27,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:30:27,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 05:30:27,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181421429] [2021-11-19 05:30:27,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:30:27,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 05:30:27,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:30:27,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 05:30:27,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:30:27,075 INFO L87 Difference]: Start difference. First operand 169 states and 180 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:27,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:30:27,907 INFO L93 Difference]: Finished difference Result 168 states and 179 transitions. [2021-11-19 05:30:27,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 05:30:27,907 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-11-19 05:30:27,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:30:27,909 INFO L225 Difference]: With dead ends: 168 [2021-11-19 05:30:27,909 INFO L226 Difference]: Without dead ends: 168 [2021-11-19 05:30:27,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-11-19 05:30:27,911 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 314 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:30:27,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 105 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 05:30:27,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-11-19 05:30:27,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2021-11-19 05:30:27,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 122 states have (on average 1.4426229508196722) internal successors, (176), 164 states have internal predecessors, (176), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:27,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 179 transitions. [2021-11-19 05:30:27,918 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 179 transitions. Word has length 24 [2021-11-19 05:30:27,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:30:27,919 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 179 transitions. [2021-11-19 05:30:27,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:27,919 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 179 transitions. [2021-11-19 05:30:27,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 05:30:27,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:30:27,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:30:27,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-19 05:30:27,921 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr21REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-11-19 05:30:27,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:30:27,922 INFO L85 PathProgramCache]: Analyzing trace with hash -379934428, now seen corresponding path program 1 times [2021-11-19 05:30:27,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:30:27,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771575485] [2021-11-19 05:30:27,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:27,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:30:27,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:28,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:30:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:28,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:30:28,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:30:28,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771575485] [2021-11-19 05:30:28,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771575485] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:30:28,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:30:28,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 05:30:28,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179270559] [2021-11-19 05:30:28,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:30:28,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 05:30:28,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:30:28,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 05:30:28,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 05:30:28,175 INFO L87 Difference]: Start difference. First operand 168 states and 179 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:29,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:30:29,211 INFO L93 Difference]: Finished difference Result 186 states and 198 transitions. [2021-11-19 05:30:29,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 05:30:29,211 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-11-19 05:30:29,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:30:29,213 INFO L225 Difference]: With dead ends: 186 [2021-11-19 05:30:29,213 INFO L226 Difference]: Without dead ends: 186 [2021-11-19 05:30:29,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=462, Unknown=0, NotChecked=0, Total=650 [2021-11-19 05:30:29,215 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 376 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:30:29,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 104 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 05:30:29,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-19 05:30:29,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 172. [2021-11-19 05:30:29,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 132 states have (on average 1.393939393939394) internal successors, (184), 168 states have internal predecessors, (184), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:29,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 187 transitions. [2021-11-19 05:30:29,224 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 187 transitions. Word has length 24 [2021-11-19 05:30:29,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:30:29,225 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 187 transitions. [2021-11-19 05:30:29,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:29,225 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 187 transitions. [2021-11-19 05:30:29,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 05:30:29,227 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:30:29,227 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] [2021-11-19 05:30:29,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-19 05:30:29,227 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr49REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-11-19 05:30:29,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:30:29,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1999955632, now seen corresponding path program 1 times [2021-11-19 05:30:29,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:30:29,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34732432] [2021-11-19 05:30:29,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:29,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:30:29,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:29,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:30:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:29,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:30:29,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:30:29,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34732432] [2021-11-19 05:30:29,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34732432] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:30:29,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047657226] [2021-11-19 05:30:29,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:29,358 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:30:29,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:30:29,362 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:30:29,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 05:30:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:29,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-19 05:30:29,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:30:29,627 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 11 treesize of output 7 [2021-11-19 05:30:29,635 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 11 treesize of output 7 [2021-11-19 05:30:29,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:30:29,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-19 05:30:29,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:30:29,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-19 05:30:29,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:30:29,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:30:29,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:30:29,800 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 05:30:29,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 23 [2021-11-19 05:30:29,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:30:29,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:30:29,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:30:29,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-19 05:30:30,213 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 05:30:30,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 31 [2021-11-19 05:30:30,225 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 05:30:30,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2021-11-19 05:30:30,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:30:30,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:30:30,503 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 15 treesize of output 13 [2021-11-19 05:30:30,514 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 15 treesize of output 13 [2021-11-19 05:30:30,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:30:30,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047657226] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:30:30,546 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:30:30,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 11 [2021-11-19 05:30:30,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205478215] [2021-11-19 05:30:30,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:30:30,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 05:30:30,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:30:30,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 05:30:30,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-19 05:30:30,551 INFO L87 Difference]: Start difference. First operand 172 states and 187 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:31,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:30:31,608 INFO L93 Difference]: Finished difference Result 223 states and 242 transitions. [2021-11-19 05:30:31,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 05:30:31,609 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-11-19 05:30:31,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:30:31,611 INFO L225 Difference]: With dead ends: 223 [2021-11-19 05:30:31,611 INFO L226 Difference]: Without dead ends: 223 [2021-11-19 05:30:31,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 55 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-11-19 05:30:31,613 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 441 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:30:31,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [441 Valid, 123 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 05:30:31,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-11-19 05:30:31,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 179. [2021-11-19 05:30:31,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 139 states have (on average 1.381294964028777) internal successors, (192), 175 states have internal predecessors, (192), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:31,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 195 transitions. [2021-11-19 05:30:31,621 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 195 transitions. Word has length 29 [2021-11-19 05:30:31,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:30:31,622 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 195 transitions. [2021-11-19 05:30:31,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:31,622 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 195 transitions. [2021-11-19 05:30:31,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 05:30:31,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:30:31,623 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] [2021-11-19 05:30:31,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 05:30:31,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:30:31,824 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr53ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-11-19 05:30:31,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:30:31,825 INFO L85 PathProgramCache]: Analyzing trace with hash -2041973885, now seen corresponding path program 1 times [2021-11-19 05:30:31,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:30:31,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310852419] [2021-11-19 05:30:31,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:31,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:30:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:31,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:30:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:31,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:30:31,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:30:31,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310852419] [2021-11-19 05:30:31,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310852419] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:30:31,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:30:31,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:30:31,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000534167] [2021-11-19 05:30:31,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:30:31,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:30:31,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:30:31,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:30:31,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:30:31,991 INFO L87 Difference]: Start difference. First operand 179 states and 195 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:32,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:30:32,419 INFO L93 Difference]: Finished difference Result 183 states and 197 transitions. [2021-11-19 05:30:32,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:30:32,420 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 2 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 29 [2021-11-19 05:30:32,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:30:32,421 INFO L225 Difference]: With dead ends: 183 [2021-11-19 05:30:32,422 INFO L226 Difference]: Without dead ends: 183 [2021-11-19 05:30:32,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:30:32,423 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 156 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:30:32,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 140 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 05:30:32,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-19 05:30:32,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 178. [2021-11-19 05:30:32,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 138 states have (on average 1.3695652173913044) internal successors, (189), 174 states have internal predecessors, (189), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:32,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 192 transitions. [2021-11-19 05:30:32,434 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 192 transitions. Word has length 29 [2021-11-19 05:30:32,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:30:32,435 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 192 transitions. [2021-11-19 05:30:32,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:32,435 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 192 transitions. [2021-11-19 05:30:32,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 05:30:32,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:30:32,440 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] [2021-11-19 05:30:32,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-19 05:30:32,441 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr40ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-11-19 05:30:32,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:30:32,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1744704903, now seen corresponding path program 1 times [2021-11-19 05:30:32,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:30:32,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827789248] [2021-11-19 05:30:32,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:32,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:30:32,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:32,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:30:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:32,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:30:32,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:30:32,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827789248] [2021-11-19 05:30:32,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827789248] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:30:32,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:30:32,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:30:32,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740779062] [2021-11-19 05:30:32,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:30:32,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:30:32,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:30:32,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:30:32,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:30:32,539 INFO L87 Difference]: Start difference. First operand 178 states and 192 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:32,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:30:32,856 INFO L93 Difference]: Finished difference Result 180 states and 193 transitions. [2021-11-19 05:30:32,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:30:32,857 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (2), 2 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 30 [2021-11-19 05:30:32,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:30:32,858 INFO L225 Difference]: With dead ends: 180 [2021-11-19 05:30:32,858 INFO L226 Difference]: Without dead ends: 180 [2021-11-19 05:30:32,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:30:32,860 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 146 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:30:32,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 139 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:30:32,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-11-19 05:30:32,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 176. [2021-11-19 05:30:32,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 137 states have (on average 1.3576642335766422) internal successors, (186), 172 states have internal predecessors, (186), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:32,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 189 transitions. [2021-11-19 05:30:32,868 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 189 transitions. Word has length 30 [2021-11-19 05:30:32,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:30:32,868 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 189 transitions. [2021-11-19 05:30:32,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:32,869 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 189 transitions. [2021-11-19 05:30:32,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-19 05:30:32,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:30:32,870 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] [2021-11-19 05:30:32,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-19 05:30:32,871 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr31REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-11-19 05:30:32,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:30:32,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1885887701, now seen corresponding path program 1 times [2021-11-19 05:30:32,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:30:32,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649279922] [2021-11-19 05:30:32,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:32,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:30:32,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:32,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:30:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:32,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:30:32,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:30:32,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649279922] [2021-11-19 05:30:32,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649279922] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:30:32,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:30:32,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:30:32,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263063029] [2021-11-19 05:30:32,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:30:32,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:30:32,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:30:32,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:30:32,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:30:32,971 INFO L87 Difference]: Start difference. First operand 176 states and 189 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:33,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:30:33,413 INFO L93 Difference]: Finished difference Result 175 states and 188 transitions. [2021-11-19 05:30:33,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 05:30:33,414 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 2 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 32 [2021-11-19 05:30:33,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:30:33,416 INFO L225 Difference]: With dead ends: 175 [2021-11-19 05:30:33,416 INFO L226 Difference]: Without dead ends: 175 [2021-11-19 05:30:33,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-19 05:30:33,417 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 129 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:30:33,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 141 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 05:30:33,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-19 05:30:33,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2021-11-19 05:30:33,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 137 states have (on average 1.3503649635036497) internal successors, (185), 171 states have internal predecessors, (185), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:33,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 188 transitions. [2021-11-19 05:30:33,426 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 188 transitions. Word has length 32 [2021-11-19 05:30:33,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:30:33,427 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 188 transitions. [2021-11-19 05:30:33,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:33,428 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 188 transitions. [2021-11-19 05:30:33,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-19 05:30:33,430 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:30:33,430 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] [2021-11-19 05:30:33,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-19 05:30:33,430 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr30REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-11-19 05:30:33,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:30:33,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1885887700, now seen corresponding path program 1 times [2021-11-19 05:30:33,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:30:33,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039127263] [2021-11-19 05:30:33,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:33,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:30:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:33,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:30:33,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:33,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:30:33,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:30:33,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039127263] [2021-11-19 05:30:33,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039127263] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:30:33,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:30:33,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:30:33,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897473604] [2021-11-19 05:30:33,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:30:33,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:30:33,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:30:33,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:30:33,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:30:33,546 INFO L87 Difference]: Start difference. First operand 175 states and 188 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:33,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:30:33,935 INFO L93 Difference]: Finished difference Result 174 states and 187 transitions. [2021-11-19 05:30:33,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:30:33,936 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 2 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 32 [2021-11-19 05:30:33,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:30:33,937 INFO L225 Difference]: With dead ends: 174 [2021-11-19 05:30:33,938 INFO L226 Difference]: Without dead ends: 174 [2021-11-19 05:30:33,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:30:33,939 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 128 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:30:33,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 140 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:30:33,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-11-19 05:30:33,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2021-11-19 05:30:33,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 137 states have (on average 1.3430656934306568) internal successors, (184), 170 states have internal predecessors, (184), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:33,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 187 transitions. [2021-11-19 05:30:33,947 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 187 transitions. Word has length 32 [2021-11-19 05:30:33,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:30:33,947 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 187 transitions. [2021-11-19 05:30:33,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:33,948 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 187 transitions. [2021-11-19 05:30:33,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-19 05:30:33,950 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:30:33,950 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] [2021-11-19 05:30:33,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-19 05:30:33,950 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr43ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-11-19 05:30:33,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:30:33,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1186433942, now seen corresponding path program 1 times [2021-11-19 05:30:33,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:30:33,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32565157] [2021-11-19 05:30:33,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:33,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:30:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:34,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:30:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:34,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:30:34,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:30:34,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32565157] [2021-11-19 05:30:34,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32565157] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:30:34,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:30:34,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:30:34,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552503626] [2021-11-19 05:30:34,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:30:34,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:30:34,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:30:34,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:30:34,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:30:34,092 INFO L87 Difference]: Start difference. First operand 174 states and 187 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:34,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:30:34,395 INFO L93 Difference]: Finished difference Result 173 states and 185 transitions. [2021-11-19 05:30:34,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:30:34,396 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (2), 2 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 33 [2021-11-19 05:30:34,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:30:34,398 INFO L225 Difference]: With dead ends: 173 [2021-11-19 05:30:34,398 INFO L226 Difference]: Without dead ends: 173 [2021-11-19 05:30:34,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:30:34,399 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 133 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:30:34,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 131 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:30:34,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-19 05:30:34,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 172. [2021-11-19 05:30:34,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 136 states have (on average 1.3308823529411764) internal successors, (181), 168 states have internal predecessors, (181), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:34,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 184 transitions. [2021-11-19 05:30:34,406 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 184 transitions. Word has length 33 [2021-11-19 05:30:34,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:30:34,407 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 184 transitions. [2021-11-19 05:30:34,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:34,407 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 184 transitions. [2021-11-19 05:30:34,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-19 05:30:34,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:30:34,408 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] [2021-11-19 05:30:34,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-19 05:30:34,408 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr74ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-11-19 05:30:34,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:30:34,410 INFO L85 PathProgramCache]: Analyzing trace with hash -928549615, now seen corresponding path program 1 times [2021-11-19 05:30:34,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:30:34,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802383376] [2021-11-19 05:30:34,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:34,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:30:34,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:34,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:30:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:34,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 05:30:34,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:30:34,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802383376] [2021-11-19 05:30:34,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802383376] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:30:34,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:30:34,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:30:34,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425699112] [2021-11-19 05:30:34,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:30:34,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:30:34,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:30:34,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:30:34,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:30:34,472 INFO L87 Difference]: Start difference. First operand 172 states and 184 transitions. Second operand has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:34,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:30:34,564 INFO L93 Difference]: Finished difference Result 173 states and 184 transitions. [2021-11-19 05:30:34,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:30:34,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 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 35 [2021-11-19 05:30:34,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:30:34,566 INFO L225 Difference]: With dead ends: 173 [2021-11-19 05:30:34,567 INFO L226 Difference]: Without dead ends: 173 [2021-11-19 05:30:34,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:30:34,568 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 206 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:30:34,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 119 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:30:34,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-19 05:30:34,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-11-19 05:30:34,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 137 states have (on average 1.3211678832116789) internal successors, (181), 169 states have internal predecessors, (181), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:34,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 184 transitions. [2021-11-19 05:30:34,577 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 184 transitions. Word has length 35 [2021-11-19 05:30:34,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:30:34,578 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 184 transitions. [2021-11-19 05:30:34,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:34,578 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 184 transitions. [2021-11-19 05:30:34,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-19 05:30:34,579 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:30:34,580 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] [2021-11-19 05:30:34,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-19 05:30:34,580 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr44ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-11-19 05:30:34,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:30:34,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1996554546, now seen corresponding path program 1 times [2021-11-19 05:30:34,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:30:34,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522457464] [2021-11-19 05:30:34,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:34,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:30:34,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:34,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:30:34,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:34,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:30:34,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:30:34,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522457464] [2021-11-19 05:30:34,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522457464] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:30:34,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:30:34,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-19 05:30:34,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643277824] [2021-11-19 05:30:34,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:30:34,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 05:30:34,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:30:34,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 05:30:34,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-19 05:30:34,805 INFO L87 Difference]: Start difference. First operand 173 states and 184 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:35,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:30:35,760 INFO L93 Difference]: Finished difference Result 186 states and 196 transitions. [2021-11-19 05:30:35,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-19 05:30:35,761 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 1 states have call successors, (2), 2 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 35 [2021-11-19 05:30:35,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:30:35,762 INFO L225 Difference]: With dead ends: 186 [2021-11-19 05:30:35,762 INFO L226 Difference]: Without dead ends: 186 [2021-11-19 05:30:35,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=247, Invalid=565, Unknown=0, NotChecked=0, Total=812 [2021-11-19 05:30:35,764 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 439 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:30:35,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 98 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 05:30:35,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-19 05:30:35,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 173. [2021-11-19 05:30:35,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 137 states have (on average 1.313868613138686) internal successors, (180), 169 states have internal predecessors, (180), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:35,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 183 transitions. [2021-11-19 05:30:35,771 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 183 transitions. Word has length 35 [2021-11-19 05:30:35,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:30:35,771 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 183 transitions. [2021-11-19 05:30:35,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:35,772 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 183 transitions. [2021-11-19 05:30:35,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-19 05:30:35,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:30:35,773 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, 1, 1, 1, 1, 1] [2021-11-19 05:30:35,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-19 05:30:35,774 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr34REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-11-19 05:30:35,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:30:35,774 INFO L85 PathProgramCache]: Analyzing trace with hash 412994518, now seen corresponding path program 1 times [2021-11-19 05:30:35,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:30:35,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663717874] [2021-11-19 05:30:35,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:35,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:30:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:35,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:30:35,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:35,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:30:35,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:30:35,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663717874] [2021-11-19 05:30:35,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663717874] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:30:35,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:30:35,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 05:30:35,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527844126] [2021-11-19 05:30:35,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:30:35,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 05:30:35,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:30:35,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 05:30:35,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:30:35,912 INFO L87 Difference]: Start difference. First operand 173 states and 183 transitions. Second operand has 9 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:36,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:30:36,394 INFO L93 Difference]: Finished difference Result 173 states and 183 transitions. [2021-11-19 05:30:36,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 05:30:36,395 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (2), 2 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 36 [2021-11-19 05:30:36,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:30:36,397 INFO L225 Difference]: With dead ends: 173 [2021-11-19 05:30:36,397 INFO L226 Difference]: Without dead ends: 173 [2021-11-19 05:30:36,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-11-19 05:30:36,399 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 181 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:30:36,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 115 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 05:30:36,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-19 05:30:36,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 172. [2021-11-19 05:30:36,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 137 states have (on average 1.3065693430656935) internal successors, (179), 168 states have internal predecessors, (179), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:36,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 182 transitions. [2021-11-19 05:30:36,407 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 182 transitions. Word has length 36 [2021-11-19 05:30:36,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:30:36,407 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 182 transitions. [2021-11-19 05:30:36,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:36,408 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 182 transitions. [2021-11-19 05:30:36,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-19 05:30:36,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:30:36,409 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] [2021-11-19 05:30:36,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-19 05:30:36,409 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr35REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-11-19 05:30:36,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:30:36,410 INFO L85 PathProgramCache]: Analyzing trace with hash 412994519, now seen corresponding path program 1 times [2021-11-19 05:30:36,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:30:36,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920790659] [2021-11-19 05:30:36,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:36,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:30:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:36,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:30:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:36,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:30:36,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:30:36,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920790659] [2021-11-19 05:30:36,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920790659] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:30:36,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:30:36,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 05:30:36,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288178215] [2021-11-19 05:30:36,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:30:36,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 05:30:36,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:30:36,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 05:30:36,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:30:36,594 INFO L87 Difference]: Start difference. First operand 172 states and 182 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:37,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:30:37,416 INFO L93 Difference]: Finished difference Result 168 states and 178 transitions. [2021-11-19 05:30:37,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 05:30:37,420 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (2), 2 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 36 [2021-11-19 05:30:37,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:30:37,422 INFO L225 Difference]: With dead ends: 168 [2021-11-19 05:30:37,422 INFO L226 Difference]: Without dead ends: 168 [2021-11-19 05:30:37,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-11-19 05:30:37,423 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 186 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 05:30:37,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 134 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 05:30:37,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-11-19 05:30:37,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 156. [2021-11-19 05:30:37,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 128 states have (on average 1.265625) internal successors, (162), 152 states have internal predecessors, (162), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:37,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 165 transitions. [2021-11-19 05:30:37,430 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 165 transitions. Word has length 36 [2021-11-19 05:30:37,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:30:37,430 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 165 transitions. [2021-11-19 05:30:37,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:37,430 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 165 transitions. [2021-11-19 05:30:37,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-19 05:30:37,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:30:37,432 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] [2021-11-19 05:30:37,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-19 05:30:37,432 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr66REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-11-19 05:30:37,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:30:37,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1979019618, now seen corresponding path program 1 times [2021-11-19 05:30:37,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:30:37,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435020801] [2021-11-19 05:30:37,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:37,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:30:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:37,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:30:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:37,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:30:37,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:30:37,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435020801] [2021-11-19 05:30:37,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435020801] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:30:37,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982477436] [2021-11-19 05:30:37,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:37,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:30:37,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:30:37,567 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:30:37,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 05:30:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:37,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 05:30:37,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:30:37,754 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 [2021-11-19 05:30:37,829 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 19 treesize of output 7 [2021-11-19 05:30:37,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 05:30:37,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 05:30:37,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982477436] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:30:37,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 05:30:37,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 10 [2021-11-19 05:30:37,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122830136] [2021-11-19 05:30:37,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:30:37,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:30:37,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:30:37,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:30:37,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:30:37,861 INFO L87 Difference]: Start difference. First operand 156 states and 165 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:37,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:30:37,969 INFO L93 Difference]: Finished difference Result 165 states and 174 transitions. [2021-11-19 05:30:37,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:30:37,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (2), 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 37 [2021-11-19 05:30:37,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:30:37,971 INFO L225 Difference]: With dead ends: 165 [2021-11-19 05:30:37,971 INFO L226 Difference]: Without dead ends: 165 [2021-11-19 05:30:37,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-19 05:30:37,973 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 6 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:30:37,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 292 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:30:37,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-19 05:30:37,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 159. [2021-11-19 05:30:37,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 131 states have (on average 1.2595419847328244) internal successors, (165), 155 states have internal predecessors, (165), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:37,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 168 transitions. [2021-11-19 05:30:37,981 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 168 transitions. Word has length 37 [2021-11-19 05:30:37,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:30:37,981 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 168 transitions. [2021-11-19 05:30:37,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:37,982 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 168 transitions. [2021-11-19 05:30:37,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-19 05:30:37,982 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:30:37,983 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] [2021-11-19 05:30:38,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 05:30:38,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:30:38,197 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr59REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-11-19 05:30:38,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:30:38,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1463102527, now seen corresponding path program 1 times [2021-11-19 05:30:38,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:30:38,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290922410] [2021-11-19 05:30:38,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:38,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:30:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:38,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:30:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:38,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:30:38,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:30:38,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290922410] [2021-11-19 05:30:38,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290922410] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:30:38,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403061235] [2021-11-19 05:30:38,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:38,376 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:30:38,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:30:38,381 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:30:38,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 05:30:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:38,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-19 05:30:38,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:30:38,548 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 11 treesize of output 7 [2021-11-19 05:30:38,556 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 11 treesize of output 7 [2021-11-19 05:30:38,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 26 treesize of output 21 [2021-11-19 05:30:38,595 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-19 05:30:38,595 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 29 treesize of output 33 [2021-11-19 05:30:38,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 26 treesize of output 21 [2021-11-19 05:30:38,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:30:38,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:30:38,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2021-11-19 05:30:38,688 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-11-19 05:30:38,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 36 treesize of output 23 [2021-11-19 05:30:38,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:30:38,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:30:38,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:30:38,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-19 05:30:39,033 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-19 05:30:39,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 47 treesize of output 33 [2021-11-19 05:30:39,041 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-19 05:30:39,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 [2021-11-19 05:30:39,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 05:30:39,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:30:39,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 05:30:39,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403061235] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:30:39,366 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:30:39,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6] total 9 [2021-11-19 05:30:39,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913189725] [2021-11-19 05:30:39,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:30:39,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 05:30:39,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:30:39,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 05:30:39,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:30:39,369 INFO L87 Difference]: Start difference. First operand 159 states and 168 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:40,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:30:40,062 INFO L93 Difference]: Finished difference Result 172 states and 180 transitions. [2021-11-19 05:30:40,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 05:30:40,063 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-11-19 05:30:40,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:30:40,065 INFO L225 Difference]: With dead ends: 172 [2021-11-19 05:30:40,065 INFO L226 Difference]: Without dead ends: 172 [2021-11-19 05:30:40,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 74 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2021-11-19 05:30:40,066 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 185 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:30:40,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 123 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 05:30:40,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-11-19 05:30:40,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 165. [2021-11-19 05:30:40,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 137 states have (on average 1.2481751824817517) internal successors, (171), 161 states have internal predecessors, (171), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:40,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 174 transitions. [2021-11-19 05:30:40,074 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 174 transitions. Word has length 38 [2021-11-19 05:30:40,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:30:40,074 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 174 transitions. [2021-11-19 05:30:40,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:40,075 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 174 transitions. [2021-11-19 05:30:40,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-19 05:30:40,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:30:40,076 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:30:40,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-19 05:30:40,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-19 05:30:40,289 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr77ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-11-19 05:30:40,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:30:40,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1888462229, now seen corresponding path program 1 times [2021-11-19 05:30:40,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:30:40,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370881072] [2021-11-19 05:30:40,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:40,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:30:40,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:40,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:30:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:40,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 05:30:40,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:30:40,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370881072] [2021-11-19 05:30:40,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370881072] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:30:40,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:30:40,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:30:40,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5708922] [2021-11-19 05:30:40,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:30:40,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:30:40,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:30:40,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:30:40,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:30:40,359 INFO L87 Difference]: Start difference. First operand 165 states and 174 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:40,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:30:40,417 INFO L93 Difference]: Finished difference Result 164 states and 172 transitions. [2021-11-19 05:30:40,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:30:40,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 2 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 39 [2021-11-19 05:30:40,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:30:40,419 INFO L225 Difference]: With dead ends: 164 [2021-11-19 05:30:40,419 INFO L226 Difference]: Without dead ends: 164 [2021-11-19 05:30:40,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:30:40,421 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 195 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:30:40,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 96 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:30:40,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-19 05:30:40,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2021-11-19 05:30:40,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 137 states have (on average 1.2335766423357664) internal successors, (169), 160 states have internal predecessors, (169), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:40,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 172 transitions. [2021-11-19 05:30:40,428 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 172 transitions. Word has length 39 [2021-11-19 05:30:40,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:30:40,428 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 172 transitions. [2021-11-19 05:30:40,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:40,429 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 172 transitions. [2021-11-19 05:30:40,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-19 05:30:40,430 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:30:40,430 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] [2021-11-19 05:30:40,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-19 05:30:40,430 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr79ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-11-19 05:30:40,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:30:40,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1958975118, now seen corresponding path program 1 times [2021-11-19 05:30:40,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:30:40,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366496279] [2021-11-19 05:30:40,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:40,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:30:40,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:40,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:30:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:40,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 05:30:40,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:30:40,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366496279] [2021-11-19 05:30:40,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366496279] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:30:40,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203307396] [2021-11-19 05:30:40,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:40,612 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:30:40,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:30:40,617 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:30:40,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-19 05:30:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:40,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-19 05:30:40,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:30:41,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 05:30:41,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:30:42,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 05:30:42,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203307396] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:30:42,273 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:30:42,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2021-11-19 05:30:42,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41314848] [2021-11-19 05:30:42,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:30:42,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 05:30:42,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:30:42,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 05:30:42,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-11-19 05:30:42,277 INFO L87 Difference]: Start difference. First operand 164 states and 172 transitions. Second operand has 18 states, 17 states have (on average 6.235294117647059) internal successors, (106), 16 states have internal predecessors, (106), 1 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:43,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:30:43,042 INFO L93 Difference]: Finished difference Result 168 states and 175 transitions. [2021-11-19 05:30:43,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 05:30:43,043 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 6.235294117647059) internal successors, (106), 16 states have internal predecessors, (106), 1 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2021-11-19 05:30:43,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:30:43,044 INFO L225 Difference]: With dead ends: 168 [2021-11-19 05:30:43,044 INFO L226 Difference]: Without dead ends: 143 [2021-11-19 05:30:43,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2021-11-19 05:30:43,045 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 209 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 535 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:30:43,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 100 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 704 Invalid, 0 Unknown, 535 Unchecked, 0.6s Time] [2021-11-19 05:30:43,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-19 05:30:43,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-11-19 05:30:43,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 116 states have (on average 1.2672413793103448) internal successors, (147), 139 states have internal predecessors, (147), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:43,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 150 transitions. [2021-11-19 05:30:43,051 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 150 transitions. Word has length 41 [2021-11-19 05:30:43,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:30:43,052 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 150 transitions. [2021-11-19 05:30:43,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 6.235294117647059) internal successors, (106), 16 states have internal predecessors, (106), 1 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:30:43,052 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 150 transitions. [2021-11-19 05:30:43,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 05:30:43,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:30:43,053 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] [2021-11-19 05:30:43,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-19 05:30:43,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-19 05:30:43,281 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr48ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-11-19 05:30:43,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:30:43,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1052942342, now seen corresponding path program 1 times [2021-11-19 05:30:43,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:30:43,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736476410] [2021-11-19 05:30:43,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:43,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:30:43,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:44,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:30:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:44,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:30:44,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:30:44,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736476410] [2021-11-19 05:30:44,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736476410] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:30:44,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889142049] [2021-11-19 05:30:44,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:44,028 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:30:44,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:30:44,033 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:30:44,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-19 05:30:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:44,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-19 05:30:44,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:30:44,222 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 [2021-11-19 05:30:44,248 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 [2021-11-19 05:30:44,360 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 05:30:44,361 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 11 treesize of output 11 [2021-11-19 05:30:44,416 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 16 treesize of output 12 [2021-11-19 05:30:44,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:30:44,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2021-11-19 05:30:44,566 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-19 05:30:44,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 52 [2021-11-19 05:30:44,588 INFO L354 Elim1Store]: treesize reduction 53, result has 14.5 percent of original size [2021-11-19 05:30:44,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 62 treesize of output 34 [2021-11-19 05:30:44,683 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-19 05:30:44,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 17 [2021-11-19 05:30:44,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 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 [2021-11-19 05:30:44,801 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-19 05:30:44,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-11-19 05:30:45,204 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-11-19 05:30:45,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 14 [2021-11-19 05:30:45,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:30:45,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:30:51,437 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_5 Int) (main_~end~0.offset Int)) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| |c_main_#t~mem6.base| (store (store (select |c_#memory_int| |c_main_#t~mem6.base|) main_~end~0.offset v_DerPreprocessor_5) (+ main_~end~0.offset 8) ~unnamed1~0~BLACK)) c_main_~list~0.base) (+ c_main_~list~0.offset 8)))) is different from false [2021-11-19 05:30:52,280 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_main_~end~0.offset_76 Int) (v_DerPreprocessor_5 Int)) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset))) (store |c_#memory_int| .cse0 (store (store (select |c_#memory_int| .cse0) v_main_~end~0.offset_76 v_DerPreprocessor_5) (+ v_main_~end~0.offset_76 8) ~unnamed1~0~BLACK))) c_main_~list~0.base) (+ c_main_~list~0.offset 8)))) is different from false [2021-11-19 05:32:22,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:32:22,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889142049] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:32:22,565 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:32:22,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 15] total 41 [2021-11-19 05:32:22,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108222222] [2021-11-19 05:32:22,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:32:22,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-19 05:32:22,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:32:22,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-19 05:32:22,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1246, Unknown=34, NotChecked=150, Total=1640 [2021-11-19 05:32:22,569 INFO L87 Difference]: Start difference. First operand 143 states and 150 transitions. Second operand has 41 states, 41 states have (on average 2.658536585365854) internal successors, (109), 40 states have internal predecessors, (109), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:32:36,674 WARN L227 SmtUtils]: Spent 11.79s on a formula simplification. DAG size of input: 64 DAG size of output: 48 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:32:56,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:32:56,106 INFO L93 Difference]: Finished difference Result 182 states and 191 transitions. [2021-11-19 05:32:56,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-19 05:32:56,107 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.658536585365854) internal successors, (109), 40 states have internal predecessors, (109), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2021-11-19 05:32:56,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:32:56,108 INFO L225 Difference]: With dead ends: 182 [2021-11-19 05:32:56,108 INFO L226 Difference]: Without dead ends: 182 [2021-11-19 05:32:56,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 864 ImplicationChecksByTransitivity, 127.6s TimeCoverageRelationStatistics Valid=497, Invalid=2433, Unknown=48, NotChecked=214, Total=3192 [2021-11-19 05:32:56,111 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 210 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 922 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:32:56,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 321 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 789 Invalid, 0 Unknown, 922 Unchecked, 0.8s Time] [2021-11-19 05:32:56,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-19 05:32:56,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 169. [2021-11-19 05:32:56,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 142 states have (on average 1.232394366197183) internal successors, (175), 165 states have internal predecessors, (175), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:32:56,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 178 transitions. [2021-11-19 05:32:56,121 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 178 transitions. Word has length 43 [2021-11-19 05:32:56,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:32:56,121 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 178 transitions. [2021-11-19 05:32:56,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.658536585365854) internal successors, (109), 40 states have internal predecessors, (109), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:32:56,122 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 178 transitions. [2021-11-19 05:32:56,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-19 05:32:56,122 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:32:56,123 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] [2021-11-19 05:32:56,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-19 05:32:56,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-19 05:32:56,349 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr44ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-11-19 05:32:56,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:32:56,350 INFO L85 PathProgramCache]: Analyzing trace with hash 445531641, now seen corresponding path program 1 times [2021-11-19 05:32:56,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:32:56,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8456992] [2021-11-19 05:32:56,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:32:56,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:32:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:32:56,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:32:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:32:56,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:32:56,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:32:56,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8456992] [2021-11-19 05:32:56,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8456992] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:32:56,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:32:56,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-19 05:32:56,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844946633] [2021-11-19 05:32:56,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:32:56,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 05:32:56,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:32:56,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 05:32:56,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-19 05:32:56,627 INFO L87 Difference]: Start difference. First operand 169 states and 178 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:32:57,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:32:57,689 INFO L93 Difference]: Finished difference Result 183 states and 193 transitions. [2021-11-19 05:32:57,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 05:32:57,690 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 1 states have call successors, (2), 2 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 45 [2021-11-19 05:32:57,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:32:57,691 INFO L225 Difference]: With dead ends: 183 [2021-11-19 05:32:57,692 INFO L226 Difference]: Without dead ends: 183 [2021-11-19 05:32:57,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2021-11-19 05:32:57,693 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 352 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:32:57,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 120 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 980 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 05:32:57,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-19 05:32:57,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 160. [2021-11-19 05:32:57,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 134 states have (on average 1.2388059701492538) internal successors, (166), 156 states have internal predecessors, (166), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:32:57,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 169 transitions. [2021-11-19 05:32:57,699 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 169 transitions. Word has length 45 [2021-11-19 05:32:57,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:32:57,700 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 169 transitions. [2021-11-19 05:32:57,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:32:57,700 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 169 transitions. [2021-11-19 05:32:57,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-19 05:32:57,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:32:57,701 INFO L514 BasicCegarLoop]: trace histogram [2, 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] [2021-11-19 05:32:57,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-19 05:32:57,701 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr49REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-11-19 05:32:57,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:32:57,702 INFO L85 PathProgramCache]: Analyzing trace with hash -654936300, now seen corresponding path program 1 times [2021-11-19 05:32:57,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:32:57,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561542522] [2021-11-19 05:32:57,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:32:57,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:32:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:32:58,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:32:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:32:58,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:32:58,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:32:58,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561542522] [2021-11-19 05:32:58,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561542522] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:32:58,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87648591] [2021-11-19 05:32:58,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:32:58,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:32:58,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:32:58,045 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:32:58,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-19 05:32:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:32:58,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-19 05:32:58,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:32:58,228 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 [2021-11-19 05:32:58,363 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 05:32:58,364 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 11 treesize of output 11 [2021-11-19 05:32:58,421 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 16 treesize of output 12 [2021-11-19 05:32:58,563 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-19 05:32:58,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-11-19 05:32:58,835 INFO L354 Elim1Store]: treesize reduction 62, result has 27.1 percent of original size [2021-11-19 05:32:58,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 43 [2021-11-19 05:32:58,974 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-11-19 05:32:58,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 35 [2021-11-19 05:32:59,283 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 [2021-11-19 05:32:59,294 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:32:59,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:32:59,540 INFO L354 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2021-11-19 05:32:59,540 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 29 treesize of output 28 [2021-11-19 05:33:06,948 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~null~0.base Int) (v_DerPreprocessor_8 Int) (main_~end~0.offset Int)) (= (select (select (store |c_#memory_$Pointer$.base| |c_main_#t~mem6.base| (store (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem6.base|) main_~end~0.offset main_~null~0.base) (+ main_~end~0.offset 8) v_DerPreprocessor_8)) c_main_~list~0.base) c_main_~list~0.offset) |c_main_#t~mem6.base|)) is different from false [2021-11-19 05:33:14,163 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~null~0.base Int) (v_DerPreprocessor_8 Int) (v_main_~end~0.offset_81 Int) (|main_#t~mem5.offset| Int)) (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_main_#t~mem5.base| (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem5.base|) (+ |main_#t~mem5.offset| 4) c_main_~end~0.base)))) (let ((.cse1 (select (select .cse0 c_main_~end~0.base) c_main_~end~0.offset))) (= (select (select (store .cse0 .cse1 (store (store (select .cse0 .cse1) v_main_~end~0.offset_81 main_~null~0.base) (+ v_main_~end~0.offset_81 8) v_DerPreprocessor_8)) c_main_~list~0.base) c_main_~list~0.offset) .cse1)))) is different from false [2021-11-19 05:33:21,246 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 9071 treesize of output 9007 [2021-11-19 05:33:44,892 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:44,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87648591] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:33:44,892 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:33:44,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 33 [2021-11-19 05:33:44,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497271157] [2021-11-19 05:33:44,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:33:44,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-19 05:33:44,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:33:44,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-19 05:33:44,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=874, Unknown=13, NotChecked=122, Total=1122 [2021-11-19 05:33:44,895 INFO L87 Difference]: Start difference. First operand 160 states and 169 transitions. Second operand has 34 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:46,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:46,551 INFO L93 Difference]: Finished difference Result 226 states and 240 transitions. [2021-11-19 05:33:46,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 05:33:46,551 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2021-11-19 05:33:46,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:46,553 INFO L225 Difference]: With dead ends: 226 [2021-11-19 05:33:46,553 INFO L226 Difference]: Without dead ends: 226 [2021-11-19 05:33:46,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 23.3s TimeCoverageRelationStatistics Valid=388, Invalid=2157, Unknown=13, NotChecked=198, Total=2756 [2021-11-19 05:33:46,555 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 539 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 2670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1245 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:46,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [539 Valid, 177 Invalid, 2670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1350 Invalid, 0 Unknown, 1245 Unchecked, 0.8s Time] [2021-11-19 05:33:46,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-11-19 05:33:46,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 168. [2021-11-19 05:33:46,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 142 states have (on average 1.2394366197183098) internal successors, (176), 164 states have internal predecessors, (176), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:46,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 179 transitions. [2021-11-19 05:33:46,560 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 179 transitions. Word has length 50 [2021-11-19 05:33:46,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:46,561 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 179 transitions. [2021-11-19 05:33:46,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:46,561 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 179 transitions. [2021-11-19 05:33:46,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-19 05:33:46,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:46,562 INFO L514 BasicCegarLoop]: trace histogram [2, 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] [2021-11-19 05:33:46,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-19 05:33:46,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-19 05:33:46,777 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr50REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-11-19 05:33:46,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:46,778 INFO L85 PathProgramCache]: Analyzing trace with hash -654936299, now seen corresponding path program 1 times [2021-11-19 05:33:46,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:33:46,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356905939] [2021-11-19 05:33:46,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:46,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:33:46,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:47,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:33:47,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:47,112 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:47,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:33:47,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356905939] [2021-11-19 05:33:47,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356905939] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:33:47,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060908058] [2021-11-19 05:33:47,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:47,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:33:47,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:33:47,117 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:33:47,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-19 05:33:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:47,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-19 05:33:47,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:33:47,286 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 [2021-11-19 05:33:47,414 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 [2021-11-19 05:33:47,429 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 05:33:47,429 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 11 treesize of output 11 [2021-11-19 05:33:47,488 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 21 treesize of output 17 [2021-11-19 05:33:47,498 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 11 treesize of output 7 [2021-11-19 05:33:47,672 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-19 05:33:47,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 49 [2021-11-19 05:33:47,686 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-19 05:33:47,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 59 treesize of output 54 [2021-11-19 05:33:47,970 INFO L354 Elim1Store]: treesize reduction 62, result has 27.1 percent of original size [2021-11-19 05:33:47,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 75 [2021-11-19 05:33:47,992 INFO L354 Elim1Store]: treesize reduction 84, result has 20.0 percent of original size [2021-11-19 05:33:47,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 75 treesize of output 77 [2021-11-19 05:33:48,112 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-11-19 05:33:48,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 98 treesize of output 68 [2021-11-19 05:33:48,133 INFO L354 Elim1Store]: treesize reduction 96, result has 16.5 percent of original size [2021-11-19 05:33:48,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 67 treesize of output 42 [2021-11-19 05:33:48,514 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 50 treesize of output 34 [2021-11-19 05:33:48,518 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-19 05:33:48,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 31 treesize of output 19 [2021-11-19 05:33:48,535 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:48,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:34:57,071 WARN L227 SmtUtils]: Spent 5.45s on a formula simplification that was a NOOP. DAG size: 45 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:34:59,106 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((main_~null~0.base Int) (v_DerPreprocessor_9 Int) (v_subst_1 Int) (v_DerPreprocessor_10 Int) (|main_#t~mem5.offset| Int)) (let ((.cse3 (+ |main_#t~mem5.offset| 4))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_main_#t~mem5.base| (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem5.base|) .cse3 c_main_~end~0.base)))) (let ((.cse1 (select (select .cse4 c_main_~end~0.base) c_main_~end~0.offset)) (.cse2 (+ v_subst_1 8))) (<= (+ (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_main_#t~mem5.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem5.base|) .cse3 c_main_~end~0.offset)))) (store .cse0 .cse1 (store (store (select .cse0 .cse1) v_subst_1 c_main_~null~0.offset) .cse2 v_DerPreprocessor_10))) c_main_~list~0.base) c_main_~list~0.offset) 12) (select |c_#length| (select (select (store .cse4 .cse1 (store (store (select .cse4 .cse1) v_subst_1 main_~null~0.base) .cse2 v_DerPreprocessor_9)) c_main_~list~0.base) c_main_~list~0.offset))))))) (forall ((v_subst_2 Int) (v_DerPreprocessor_10 Int) (|main_#t~mem5.offset| Int)) (<= 0 (+ (select (select (let ((.cse7 (+ |main_#t~mem5.offset| 4))) (let ((.cse5 (store |c_#memory_$Pointer$.offset| |c_main_#t~mem5.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem5.base|) .cse7 c_main_~end~0.offset))) (.cse6 (select (select (store |c_#memory_$Pointer$.base| |c_main_#t~mem5.base| (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem5.base|) .cse7 c_main_~end~0.base)) c_main_~end~0.base) c_main_~end~0.offset))) (store .cse5 .cse6 (store (store (select .cse5 .cse6) v_subst_2 c_main_~null~0.offset) (+ v_subst_2 8) v_DerPreprocessor_10)))) c_main_~list~0.base) c_main_~list~0.offset) 8)))) is different from false [2021-11-19 05:35:01,138 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((main_~null~0.base Int) (v_DerPreprocessor_9 Int) (v_subst_1 Int) (v_DerPreprocessor_10 Int) (|main_#t~mem5.offset| Int)) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset)) (.cse4 (+ |main_#t~mem5.offset| 4))) (let ((.cse5 (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) .cse4 c_main_~end~0.base)))) (let ((.cse1 (select (select .cse5 c_main_~end~0.base) c_main_~end~0.offset)) (.cse2 (+ v_subst_1 8))) (<= (+ (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| .cse3 (store (select |c_#memory_$Pointer$.offset| .cse3) .cse4 c_main_~end~0.offset)))) (store .cse0 .cse1 (store (store (select .cse0 .cse1) v_subst_1 c_main_~null~0.offset) .cse2 v_DerPreprocessor_10))) c_main_~list~0.base) c_main_~list~0.offset) 12) (select |c_#length| (select (select (store .cse5 .cse1 (store (store (select .cse5 .cse1) v_subst_1 main_~null~0.base) .cse2 v_DerPreprocessor_9)) c_main_~list~0.base) c_main_~list~0.offset))))))) (forall ((v_subst_2 Int) (v_DerPreprocessor_10 Int) (|main_#t~mem5.offset| Int)) (<= 0 (+ (select (select (let ((.cse8 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset)) (.cse9 (+ |main_#t~mem5.offset| 4))) (let ((.cse6 (store |c_#memory_$Pointer$.offset| .cse8 (store (select |c_#memory_$Pointer$.offset| .cse8) .cse9 c_main_~end~0.offset))) (.cse7 (select (select (store |c_#memory_$Pointer$.base| .cse8 (store (select |c_#memory_$Pointer$.base| .cse8) .cse9 c_main_~end~0.base)) c_main_~end~0.base) c_main_~end~0.offset))) (store .cse6 .cse7 (store (store (select .cse6 .cse7) v_subst_2 c_main_~null~0.offset) (+ v_subst_2 8) v_DerPreprocessor_10)))) c_main_~list~0.base) c_main_~list~0.offset) 8)))) is different from false [2021-11-19 05:35:01,164 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 6858 treesize of output 6826 [2021-11-19 05:35:01,540 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-19 05:35:01,540 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-19 05:35:01,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-11-19 05:35:01,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646693836] [2021-11-19 05:35:01,540 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-19 05:35:01,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 05:35:01,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:35:01,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 05:35:01,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=953, Unknown=19, NotChecked=130, Total=1260 [2021-11-19 05:35:01,542 INFO L87 Difference]: Start difference. First operand 168 states and 179 transitions. Second operand has 14 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:35:02,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:35:02,791 INFO L93 Difference]: Finished difference Result 230 states and 245 transitions. [2021-11-19 05:35:02,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 05:35:02,793 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (2), 2 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 50 [2021-11-19 05:35:02,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:35:02,795 INFO L225 Difference]: With dead ends: 230 [2021-11-19 05:35:02,795 INFO L226 Difference]: Without dead ends: 230 [2021-11-19 05:35:02,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 73.3s TimeCoverageRelationStatistics Valid=319, Invalid=1832, Unknown=19, NotChecked=182, Total=2352 [2021-11-19 05:35:02,797 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 503 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:35:02,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [503 Valid, 95 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 05:35:02,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-11-19 05:35:02,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 170. [2021-11-19 05:35:02,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 144 states have (on average 1.2361111111111112) internal successors, (178), 166 states have internal predecessors, (178), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:35:02,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 181 transitions. [2021-11-19 05:35:02,809 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 181 transitions. Word has length 50 [2021-11-19 05:35:02,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:35:02,810 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 181 transitions. [2021-11-19 05:35:02,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:35:02,810 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 181 transitions. [2021-11-19 05:35:02,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-19 05:35:02,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:35:02,811 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] [2021-11-19 05:35:02,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-19 05:35:03,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:35:03,030 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr48ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-11-19 05:35:03,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:35:03,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1281782735, now seen corresponding path program 1 times [2021-11-19 05:35:03,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:35:03,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79054452] [2021-11-19 05:35:03,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:35:03,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:35:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:35:03,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:35:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:35:03,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:35:03,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:35:03,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79054452] [2021-11-19 05:35:03,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79054452] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:35:03,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560849750] [2021-11-19 05:35:03,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:35:03,953 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:35:03,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:35:03,960 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:35:03,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-19 05:35:04,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:35:04,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-19 05:35:04,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:35:04,139 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 [2021-11-19 05:35:04,164 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 [2021-11-19 05:35:04,262 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 05:35:04,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-19 05:35:04,321 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 16 treesize of output 12 [2021-11-19 05:35:04,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:35:04,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2021-11-19 05:35:04,458 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-19 05:35:04,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 52 [2021-11-19 05:35:04,473 INFO L354 Elim1Store]: treesize reduction 53, result has 14.5 percent of original size [2021-11-19 05:35:04,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 62 treesize of output 34 [2021-11-19 05:35:04,554 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-19 05:35:04,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 17 [2021-11-19 05:35:04,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 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 [2021-11-19 05:35:04,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-19 05:35:04,751 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-19 05:35:04,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-11-19 05:35:04,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-11-19 05:35:04,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:35:04,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2021-11-19 05:35:04,926 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-19 05:35:04,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 65 [2021-11-19 05:35:04,955 INFO L354 Elim1Store]: treesize reduction 104, result has 15.4 percent of original size [2021-11-19 05:35:04,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 79 treesize of output 54 [2021-11-19 05:35:05,058 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-19 05:35:05,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 31 [2021-11-19 05:35:05,209 INFO L354 Elim1Store]: treesize reduction 51, result has 15.0 percent of original size [2021-11-19 05:35:05,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 33 [2021-11-19 05:35:05,279 INFO L354 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2021-11-19 05:35:05,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 44 treesize of output 46 [2021-11-19 05:35:06,123 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-11-19 05:35:06,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 25 [2021-11-19 05:35:06,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:35:06,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:35:15,109 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_11 Int) (main_~end~0.offset Int)) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| |c_main_#t~mem10.base| (store (store (select |c_#memory_int| |c_main_#t~mem10.base|) main_~end~0.offset v_DerPreprocessor_11) (+ main_~end~0.offset 8) ~unnamed1~0~BLACK)) c_main_~list~0.base) (+ c_main_~list~0.offset 8)))) is different from false [2021-11-19 05:36:53,406 INFO L354 Elim1Store]: treesize reduction 14, result has 44.0 percent of original size [2021-11-19 05:36:53,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 332 treesize of output 334 [2021-11-19 05:36:55,612 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_13 Int) (v_DerPreprocessor_14 Int) (v_DerPreprocessor_11 Int) (v_DerPreprocessor_12 Int) (v_DerPreprocessor_15 Int) (v_DerPreprocessor_16 Int) (|main_#t~mem9.offset| Int) (v_main_~end~0.offset_92 Int) (v_main_~end~0.offset_94 Int) (|v_main_#t~malloc8.base_5| Int) (|main_#t~mem5.offset| Int)) (or (= |v_main_#t~malloc8.base_5| c_main_~end~0.base) (= |c_main_#t~malloc4.base| |v_main_#t~malloc8.base_5|) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_main_~end~0.base (store (select |c_#memory_int| c_main_~end~0.base) c_main_~end~0.offset v_DerPreprocessor_16)))) (store .cse1 |c_main_#t~malloc4.base| (store (store (store (store (select .cse1 |c_main_#t~malloc4.base|) (+ |main_#t~mem5.offset| 4) v_DerPreprocessor_15) v_main_~end~0.offset_94 v_DerPreprocessor_14) (+ v_main_~end~0.offset_94 8) ~unnamed1~0~RED) v_main_~end~0.offset_94 v_DerPreprocessor_13))))) (store .cse0 |v_main_#t~malloc8.base_5| (store (store (store (select .cse0 |v_main_#t~malloc8.base_5|) (+ 4 |main_#t~mem9.offset|) v_DerPreprocessor_12) v_main_~end~0.offset_92 v_DerPreprocessor_11) (+ v_main_~end~0.offset_92 8) ~unnamed1~0~BLACK))) c_main_~list~0.base) (+ c_main_~list~0.offset 8))))) is different from false [2021-11-19 05:37:38,424 WARN L227 SmtUtils]: Spent 7.01s on a formula simplification. DAG size of input: 233 DAG size of output: 224 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-19 05:37:38,428 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-19 05:37:38,429 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-19 05:37:38,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2021-11-19 05:37:38,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122710970] [2021-11-19 05:37:38,429 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-19 05:37:38,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-19 05:37:38,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:37:38,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-19 05:37:38,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=3156, Unknown=65, NotChecked=238, Total=3906 [2021-11-19 05:37:38,432 INFO L87 Difference]: Start difference. First operand 170 states and 181 transitions. Second operand has 25 states, 25 states have (on average 2.0) internal successors, (50), 24 states have internal predecessors, (50), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:37:41,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:37:41,205 INFO L93 Difference]: Finished difference Result 248 states and 263 transitions. [2021-11-19 05:37:41,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 05:37:41,206 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.0) internal successors, (50), 24 states have internal predecessors, (50), 1 states have call successors, (2), 2 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 53 [2021-11-19 05:37:41,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:37:41,207 INFO L225 Difference]: With dead ends: 248 [2021-11-19 05:37:41,208 INFO L226 Difference]: Without dead ends: 248 [2021-11-19 05:37:41,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2263 ImplicationChecksByTransitivity, 146.3s TimeCoverageRelationStatistics Valid=997, Invalid=5426, Unknown=65, NotChecked=318, Total=6806 [2021-11-19 05:37:41,211 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 640 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1622 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 1712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:37:41,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [640 Valid, 102 Invalid, 1712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1622 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 05:37:41,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-11-19 05:37:41,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 196. [2021-11-19 05:37:41,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 170 states have (on average 1.2058823529411764) internal successors, (205), 192 states have internal predecessors, (205), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:37:41,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 208 transitions. [2021-11-19 05:37:41,219 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 208 transitions. Word has length 53 [2021-11-19 05:37:41,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:37:41,219 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 208 transitions. [2021-11-19 05:37:41,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.0) internal successors, (50), 24 states have internal predecessors, (50), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:37:41,219 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 208 transitions. [2021-11-19 05:37:41,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-19 05:37:41,220 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:37:41,220 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 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] [2021-11-19 05:37:41,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-19 05:37:41,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:37:41,437 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr49REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 75 more)] === [2021-11-19 05:37:41,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:37:41,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1877818165, now seen corresponding path program 2 times [2021-11-19 05:37:41,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:37:41,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5090822] [2021-11-19 05:37:41,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:37:41,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:37:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:37:42,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:37:42,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:37:42,071 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:37:42,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:37:42,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5090822] [2021-11-19 05:37:42,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5090822] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:37:42,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762899400] [2021-11-19 05:37:42,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 05:37:42,072 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:37:42,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:37:42,073 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:37:42,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff6d383-79f9-4f35-9b21-20bbe31fe21d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-19 05:37:42,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 05:37:42,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:37:42,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-19 05:37:42,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:37:42,284 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 [2021-11-19 05:37:42,416 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 05:37:42,416 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 11 treesize of output 11 [2021-11-19 05:37:42,464 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 11 treesize of output 7 [2021-11-19 05:37:42,470 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 16 treesize of output 12 [2021-11-19 05:37:42,601 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-19 05:37:42,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 37 [2021-11-19 05:37:42,612 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 43 treesize of output 35 [2021-11-19 05:37:42,914 INFO L354 Elim1Store]: treesize reduction 62, result has 27.1 percent of original size [2021-11-19 05:37:42,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 70 [2021-11-19 05:37:42,939 INFO L354 Elim1Store]: treesize reduction 60, result has 22.1 percent of original size [2021-11-19 05:37:42,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 61 treesize of output 63 [2021-11-19 05:37:43,075 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-19 05:37:43,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2021-11-19 05:37:43,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:37:43,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-19 05:37:43,828 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-11-19 05:37:43,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 36 [2021-11-19 05:37:43,845 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-19 05:37:43,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 17 [2021-11-19 05:37:43,940 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:37:43,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:38:07,818 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_17 Int) (v_DerPreprocessor_18 Int) (main_~null~0.base Int)) (= (let ((.cse1 (+ 8 |c_main_#t~mem6.offset|))) (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_main_#t~mem6.base| (store (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem6.base|) |c_main_#t~mem6.offset| main_~null~0.base) .cse1 v_DerPreprocessor_17)))) (select .cse0 (select (select .cse0 c_main_~list~0.base) c_main_~list~0.offset))) (select (select (store |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base| (store (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base|) |c_main_#t~mem6.offset| c_main_~null~0.offset) .cse1 v_DerPreprocessor_18)) c_main_~list~0.base) c_main_~list~0.offset))) main_~null~0.base)) (forall ((v_DerPreprocessor_17 Int) (v_DerPreprocessor_18 Int) (main_~null~0.base Int)) (= (let ((.cse3 (+ 8 |c_main_#t~mem6.offset|))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base| (store (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base|) |c_main_#t~mem6.offset| c_main_~null~0.offset) .cse3 v_DerPreprocessor_18)))) (select (select .cse2 (select (select (store |c_#memory_$Pointer$.base| |c_main_#t~mem6.base| (store (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem6.base|) |c_main_#t~mem6.offset| main_~null~0.base) .cse3 v_DerPreprocessor_17)) c_main_~list~0.base) c_main_~list~0.offset)) (select (select .cse2 c_main_~list~0.base) c_main_~list~0.offset)))) c_main_~null~0.offset))) is different from false [2021-11-19 05:38:23,900 WARN L227 SmtUtils]: Spent 6.05s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:38:25,933 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_17 Int) (v_DerPreprocessor_18 Int) (main_~null~0.base Int) (|main_#t~mem5.offset| Int)) (= (let ((.cse6 (+ |main_#t~mem5.offset| 4))) (let ((.cse5 (store |c_#memory_$Pointer$.offset| |c_main_#t~mem5.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem5.base|) .cse6 c_main_~end~0.offset)))) (let ((.cse3 (select (select .cse5 c_main_~end~0.base) c_main_~end~0.offset)) (.cse1 (store |c_#memory_$Pointer$.base| |c_main_#t~mem5.base| (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem5.base|) .cse6 c_main_~end~0.base)))) (let ((.cse2 (select (select .cse1 c_main_~end~0.base) c_main_~end~0.offset)) (.cse4 (+ .cse3 8))) (let ((.cse0 (store .cse5 .cse2 (store (store (select .cse5 .cse2) .cse3 c_main_~null~0.offset) .cse4 v_DerPreprocessor_18)))) (select (select .cse0 (select (select (store .cse1 .cse2 (store (store (select .cse1 .cse2) .cse3 main_~null~0.base) .cse4 v_DerPreprocessor_17)) c_main_~list~0.base) c_main_~list~0.offset)) (select (select .cse0 c_main_~list~0.base) c_main_~list~0.offset))))))) c_main_~null~0.offset)) (forall ((v_DerPreprocessor_17 Int) (v_DerPreprocessor_18 Int) (main_~null~0.base Int) (|main_#t~mem5.offset| Int)) (= main_~null~0.base (let ((.cse13 (+ |main_#t~mem5.offset| 4))) (let ((.cse12 (store |c_#memory_$Pointer$.offset| |c_main_#t~mem5.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem5.base|) .cse13 c_main_~end~0.offset)))) (let ((.cse10 (select (select .cse12 c_main_~end~0.base) c_main_~end~0.offset)) (.cse8 (store |c_#memory_$Pointer$.base| |c_main_#t~mem5.base| (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem5.base|) .cse13 c_main_~end~0.base)))) (let ((.cse9 (select (select .cse8 c_main_~end~0.base) c_main_~end~0.offset)) (.cse11 (+ .cse10 8))) (select (let ((.cse7 (store .cse8 .cse9 (store (store (select .cse8 .cse9) .cse10 main_~null~0.base) .cse11 v_DerPreprocessor_17)))) (select .cse7 (select (select .cse7 c_main_~list~0.base) c_main_~list~0.offset))) (select (select (store .cse12 .cse9 (store (store (select .cse12 .cse9) .cse10 c_main_~null~0.offset) .cse11 v_DerPreprocessor_18)) c_main_~list~0.base) c_main_~list~0.offset))))))))) is different from false [2021-11-19 05:38:27,992 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_17 Int) (v_DerPreprocessor_18 Int) (main_~null~0.base Int) (|main_#t~mem5.offset| Int)) (= (let ((.cse6 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset)) (.cse7 (+ |main_#t~mem5.offset| 4))) (let ((.cse5 (store |c_#memory_$Pointer$.offset| .cse6 (store (select |c_#memory_$Pointer$.offset| .cse6) .cse7 c_main_~end~0.offset)))) (let ((.cse3 (select (select .cse5 c_main_~end~0.base) c_main_~end~0.offset)) (.cse1 (store |c_#memory_$Pointer$.base| .cse6 (store (select |c_#memory_$Pointer$.base| .cse6) .cse7 c_main_~end~0.base)))) (let ((.cse2 (select (select .cse1 c_main_~end~0.base) c_main_~end~0.offset)) (.cse4 (+ .cse3 8))) (let ((.cse0 (store .cse5 .cse2 (store (store (select .cse5 .cse2) .cse3 c_main_~null~0.offset) .cse4 v_DerPreprocessor_18)))) (select (select .cse0 (select (select (store .cse1 .cse2 (store (store (select .cse1 .cse2) .cse3 main_~null~0.base) .cse4 v_DerPreprocessor_17)) c_main_~list~0.base) c_main_~list~0.offset)) (select (select .cse0 c_main_~list~0.base) c_main_~list~0.offset))))))) c_main_~null~0.offset)) (forall ((v_DerPreprocessor_17 Int) (v_DerPreprocessor_18 Int) (main_~null~0.base Int) (|main_#t~mem5.offset| Int)) (= (let ((.cse14 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset)) (.cse15 (+ |main_#t~mem5.offset| 4))) (let ((.cse13 (store |c_#memory_$Pointer$.offset| .cse14 (store (select |c_#memory_$Pointer$.offset| .cse14) .cse15 c_main_~end~0.offset)))) (let ((.cse11 (select (select .cse13 c_main_~end~0.base) c_main_~end~0.offset)) (.cse9 (store |c_#memory_$Pointer$.base| .cse14 (store (select |c_#memory_$Pointer$.base| .cse14) .cse15 c_main_~end~0.base)))) (let ((.cse10 (select (select .cse9 c_main_~end~0.base) c_main_~end~0.offset)) (.cse12 (+ .cse11 8))) (select (let ((.cse8 (store .cse9 .cse10 (store (store (select .cse9 .cse10) .cse11 main_~null~0.base) .cse12 v_DerPreprocessor_17)))) (select .cse8 (select (select .cse8 c_main_~list~0.base) c_main_~list~0.offset))) (select (select (store .cse13 .cse10 (store (store (select .cse13 .cse10) .cse11 c_main_~null~0.offset) .cse12 v_DerPreprocessor_18)) c_main_~list~0.base) c_main_~list~0.offset)))))) main_~null~0.base))) is different from false [2021-11-19 05:38:32,568 INFO L354 Elim1Store]: treesize reduction 5388, result has 34.9 percent of original size [2021-11-19 05:38:32,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 12 new quantified variables, introduced 55 case distinctions, treesize of input 91164656 treesize of output 82083382