./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.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_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/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_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/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_cb07254d-1e39-4320-93a5-2c401887849f/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 2dcad53e9f7fd6e0b6384d19db4719ec6aa2601fd94c6ce0d3c746f1ec6b3601 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:20:36,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:20:36,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:20:36,773 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:20:36,774 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:20:36,775 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:20:36,778 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:20:36,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:20:36,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:20:36,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:20:36,787 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:20:36,789 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:20:36,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:20:36,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:20:36,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:20:36,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:20:36,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:20:36,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:20:36,803 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:20:36,806 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:20:36,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:20:36,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:20:36,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:20:36,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:20:36,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:20:36,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:20:36,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:20:36,823 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:20:36,824 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:20:36,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:20:36,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:20:36,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:20:36,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:20:36,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:20:36,833 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:20:36,834 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:20:36,835 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:20:36,835 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:20:36,836 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:20:36,837 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:20:36,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:20:36,839 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-19 04:20:36,871 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:20:36,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:20:36,872 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:20:36,872 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:20:36,873 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:20:36,874 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:20:36,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:20:36,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:20:36,876 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:20:36,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:20:36,877 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:20:36,877 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 04:20:36,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:20:36,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:20:36,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:20:36,878 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 04:20:36,879 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 04:20:36,879 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 04:20:36,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:20:36,880 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 04:20:36,880 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:20:36,880 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:20:36,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:20:36,881 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:20:36,882 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:20:36,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:20:36,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:20:36,883 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:20:36,883 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 04:20:36,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 04:20:36,884 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:20:36,884 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_cb07254d-1e39-4320-93a5-2c401887849f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2dcad53e9f7fd6e0b6384d19db4719ec6aa2601fd94c6ce0d3c746f1ec6b3601 [2021-11-19 04:20:37,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:20:37,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:20:37,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:20:37,239 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:20:37,240 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:20:37,241 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i [2021-11-19 04:20:37,329 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/data/a39e26407/891566c88ebb452bbbd059ed6f271aee/FLAG94799eab5 [2021-11-19 04:20:38,136 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:20:38,138 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i [2021-11-19 04:20:38,173 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/data/a39e26407/891566c88ebb452bbbd059ed6f271aee/FLAG94799eab5 [2021-11-19 04:20:38,325 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/data/a39e26407/891566c88ebb452bbbd059ed6f271aee [2021-11-19 04:20:38,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:20:38,330 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 04:20:38,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:20:38,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:20:38,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:20:38,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:20:38" (1/1) ... [2021-11-19 04:20:38,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70ef6cfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:38, skipping insertion in model container [2021-11-19 04:20:38,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:20:38" (1/1) ... [2021-11-19 04:20:38,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:20:38,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:20:39,001 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_cb07254d-1e39-4320-93a5-2c401887849f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i[33021,33034] [2021-11-19 04:20:39,253 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:20:39,275 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 04:20:39,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6fa5d109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:39, skipping insertion in model container [2021-11-19 04:20:39,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:20:39,278 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-19 04:20:39,281 INFO L158 Benchmark]: Toolchain (without parser) took 948.66ms. Allocated memory is still 104.9MB. Free memory was 67.9MB in the beginning and 69.8MB in the end (delta: -1.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 04:20:39,285 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 81.8MB. Free memory was 54.2MB in the beginning and 54.2MB in the end (delta: 30.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:20:39,286 INFO L158 Benchmark]: CACSL2BoogieTranslator took 944.37ms. Allocated memory is still 104.9MB. Free memory was 67.9MB in the beginning and 69.8MB in the end (delta: -1.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 04:20:39,289 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 81.8MB. Free memory was 54.2MB in the beginning and 54.2MB in the end (delta: 30.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 944.37ms. Allocated memory is still 104.9MB. Free memory was 67.9MB in the beginning and 69.8MB in the end (delta: -1.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 752]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/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_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/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 2dcad53e9f7fd6e0b6384d19db4719ec6aa2601fd94c6ce0d3c746f1ec6b3601 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:20:41,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:20:41,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:20:41,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:20:41,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:20:41,902 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:20:41,905 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:20:41,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:20:41,917 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:20:41,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:20:41,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:20:41,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:20:41,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:20:41,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:20:41,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:20:41,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:20:41,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:20:41,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:20:41,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:20:41,950 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:20:41,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:20:41,956 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:20:41,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:20:41,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:20:41,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:20:41,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:20:41,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:20:41,979 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:20:41,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:20:41,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:20:41,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:20:41,983 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:20:41,986 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:20:41,987 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:20:41,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:20:41,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:20:41,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:20:41,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:20:41,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:20:41,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:20:41,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:20:41,995 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-19 04:20:42,047 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:20:42,047 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:20:42,048 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:20:42,049 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:20:42,050 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:20:42,050 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:20:42,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:20:42,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:20:42,052 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:20:42,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:20:42,054 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:20:42,054 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 04:20:42,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:20:42,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:20:42,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:20:42,055 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 04:20:42,055 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 04:20:42,056 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 04:20:42,056 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:20:42,056 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 04:20:42,056 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 04:20:42,056 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 04:20:42,057 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:20:42,057 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:20:42,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:20:42,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:20:42,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:20:42,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:20:42,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:20:42,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:20:42,059 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-19 04:20:42,059 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 04:20:42,060 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:20:42,060 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 04:20:42,060 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2dcad53e9f7fd6e0b6384d19db4719ec6aa2601fd94c6ce0d3c746f1ec6b3601 [2021-11-19 04:20:42,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:20:42,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:20:42,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:20:42,598 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:20:42,599 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:20:42,601 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i [2021-11-19 04:20:42,685 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/data/572d4a0a1/83099d49aac54fa2a0fb1bf0f42e9315/FLAGf6868432a [2021-11-19 04:20:43,621 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:20:43,622 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i [2021-11-19 04:20:43,650 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/data/572d4a0a1/83099d49aac54fa2a0fb1bf0f42e9315/FLAGf6868432a [2021-11-19 04:20:43,697 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/data/572d4a0a1/83099d49aac54fa2a0fb1bf0f42e9315 [2021-11-19 04:20:43,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:20:43,701 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 04:20:43,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:20:43,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:20:43,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:20:43,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:20:43" (1/1) ... [2021-11-19 04:20:43,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13a0b1c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:43, skipping insertion in model container [2021-11-19 04:20:43,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:20:43" (1/1) ... [2021-11-19 04:20:43,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:20:43,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:20:44,332 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_cb07254d-1e39-4320-93a5-2c401887849f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i[33021,33034] [2021-11-19 04:20:44,527 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:20:44,540 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 04:20:44,555 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:20:44,585 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_cb07254d-1e39-4320-93a5-2c401887849f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i[33021,33034] [2021-11-19 04:20:44,710 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:20:44,716 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:20:44,767 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_cb07254d-1e39-4320-93a5-2c401887849f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i[33021,33034] [2021-11-19 04:20:44,866 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:20:44,940 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:20:44,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:44 WrapperNode [2021-11-19 04:20:44,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:20:44,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:20:44,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:20:44,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:20:44,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:44" (1/1) ... [2021-11-19 04:20:44,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:44" (1/1) ... [2021-11-19 04:20:45,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:44" (1/1) ... [2021-11-19 04:20:45,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:44" (1/1) ... [2021-11-19 04:20:45,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:44" (1/1) ... [2021-11-19 04:20:45,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:44" (1/1) ... [2021-11-19 04:20:45,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:44" (1/1) ... [2021-11-19 04:20:45,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:20:45,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:20:45,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:20:45,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:20:45,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:44" (1/1) ... [2021-11-19 04:20:45,228 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:20:45,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:20:45,268 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:20:45,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:20:45,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-19 04:20:45,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:20:45,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-19 04:20:45,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-19 04:20:45,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-19 04:20:45,325 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-19 04:20:45,325 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-19 04:20:45,325 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-19 04:20:45,325 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-19 04:20:45,326 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 04:20:45,326 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-19 04:20:45,326 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-19 04:20:45,326 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 04:20:45,326 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-19 04:20:45,327 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-19 04:20:45,327 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-19 04:20:45,327 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-19 04:20:45,327 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 04:20:45,327 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-19 04:20:45,327 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-19 04:20:45,327 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-19 04:20:45,328 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-19 04:20:45,328 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-19 04:20:45,328 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-19 04:20:45,328 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-19 04:20:45,328 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-19 04:20:45,328 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-19 04:20:45,329 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-19 04:20:45,329 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-19 04:20:45,329 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-19 04:20:45,329 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-19 04:20:45,329 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-19 04:20:45,329 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-19 04:20:45,330 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-19 04:20:45,330 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-19 04:20:45,331 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-19 04:20:45,331 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-19 04:20:45,331 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-19 04:20:45,332 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-19 04:20:45,332 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-19 04:20:45,332 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-19 04:20:45,333 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-19 04:20:45,333 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-19 04:20:45,333 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-19 04:20:45,333 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-19 04:20:45,334 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-19 04:20:45,334 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-19 04:20:45,334 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-19 04:20:45,334 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-19 04:20:45,334 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-19 04:20:45,334 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-19 04:20:45,335 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-19 04:20:45,335 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-19 04:20:45,335 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-19 04:20:45,335 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-19 04:20:45,336 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-19 04:20:45,336 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-19 04:20:45,337 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-19 04:20:45,337 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-19 04:20:45,338 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-19 04:20:45,339 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-19 04:20:45,339 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-19 04:20:45,340 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-19 04:20:45,340 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-19 04:20:45,340 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-19 04:20:45,340 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-19 04:20:45,341 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-19 04:20:45,341 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-19 04:20:45,341 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-19 04:20:45,341 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-19 04:20:45,341 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-19 04:20:45,341 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-19 04:20:45,342 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-19 04:20:45,342 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-19 04:20:45,342 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-19 04:20:45,342 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-19 04:20:45,342 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-19 04:20:45,342 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-19 04:20:45,343 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-19 04:20:45,343 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-19 04:20:45,344 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-19 04:20:45,344 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-19 04:20:45,344 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-19 04:20:45,344 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-19 04:20:45,344 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-19 04:20:45,345 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-19 04:20:45,345 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-19 04:20:45,345 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-19 04:20:45,345 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-19 04:20:45,345 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-19 04:20:45,345 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-19 04:20:45,345 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-19 04:20:45,346 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-19 04:20:45,346 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-19 04:20:45,346 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-19 04:20:45,347 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-19 04:20:45,347 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-19 04:20:45,347 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-19 04:20:45,347 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-19 04:20:45,347 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-19 04:20:45,347 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-19 04:20:45,348 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-19 04:20:45,348 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-19 04:20:45,348 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-19 04:20:45,348 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-19 04:20:45,348 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-19 04:20:45,348 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-19 04:20:45,349 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-19 04:20:45,349 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-19 04:20:45,349 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-19 04:20:45,349 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-19 04:20:45,349 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-19 04:20:45,349 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-19 04:20:45,350 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-19 04:20:45,350 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-19 04:20:45,350 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-19 04:20:45,350 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-19 04:20:45,352 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-19 04:20:45,352 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-19 04:20:45,355 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-19 04:20:45,356 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-19 04:20:45,357 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-19 04:20:45,357 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-19 04:20:45,357 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-19 04:20:45,358 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-19 04:20:45,359 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-19 04:20:45,359 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-19 04:20:45,359 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-19 04:20:45,365 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-19 04:20:45,365 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-19 04:20:45,366 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-19 04:20:45,366 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-19 04:20:45,366 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-19 04:20:45,366 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-19 04:20:45,366 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-19 04:20:45,366 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-19 04:20:45,366 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-19 04:20:45,367 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-19 04:20:45,367 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-19 04:20:45,367 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-19 04:20:45,367 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-19 04:20:45,367 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-19 04:20:45,367 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-19 04:20:45,367 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-19 04:20:45,368 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-19 04:20:45,368 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-19 04:20:45,368 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-19 04:20:45,368 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-19 04:20:45,368 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-19 04:20:45,368 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-19 04:20:45,369 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-19 04:20:45,369 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-19 04:20:45,369 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-19 04:20:45,369 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-19 04:20:45,369 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-19 04:20:45,369 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-19 04:20:45,369 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-19 04:20:45,370 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-19 04:20:45,370 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-19 04:20:45,370 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-19 04:20:45,370 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-19 04:20:45,370 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-19 04:20:45,370 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-19 04:20:45,371 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-19 04:20:45,371 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-19 04:20:45,371 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-19 04:20:45,371 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-19 04:20:45,371 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-19 04:20:45,371 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-19 04:20:45,371 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-19 04:20:45,372 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-19 04:20:45,372 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-19 04:20:45,372 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-19 04:20:45,372 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-19 04:20:45,372 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-19 04:20:45,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 04:20:45,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 04:20:45,373 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-19 04:20:45,373 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-19 04:20:45,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 04:20:45,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 04:20:45,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 04:20:45,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 04:20:45,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 04:20:45,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 04:20:45,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 04:20:45,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 04:20:45,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 04:20:45,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-19 04:20:45,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 04:20:45,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:20:45,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-19 04:20:45,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 04:20:45,921 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:20:45,923 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:20:46,060 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 04:20:53,222 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:20:53,244 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:20:53,245 INFO L301 CfgBuilder]: Removed 77 assume(true) statements. [2021-11-19 04:20:53,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:20:53 BoogieIcfgContainer [2021-11-19 04:20:53,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:20:53,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:20:53,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:20:53,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:20:53,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:20:43" (1/3) ... [2021-11-19 04:20:53,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aedff7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:20:53, skipping insertion in model container [2021-11-19 04:20:53,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:44" (2/3) ... [2021-11-19 04:20:53,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aedff7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:20:53, skipping insertion in model container [2021-11-19 04:20:53,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:20:53" (3/3) ... [2021-11-19 04:20:53,260 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test4-3.i [2021-11-19 04:20:53,266 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:20:53,267 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 851 error locations. [2021-11-19 04:20:53,321 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:20:53,330 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 04:20:53,330 INFO L340 AbstractCegarLoop]: Starting to check reachability of 851 error locations. [2021-11-19 04:20:53,384 INFO L276 IsEmpty]: Start isEmpty. Operand has 1659 states, 789 states have (on average 2.280101394169835) internal successors, (1799), 1644 states have internal predecessors, (1799), 19 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-19 04:20:53,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 04:20:53,393 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:20:53,394 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:20:53,395 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 04:20:53,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:20:53,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1062938490, now seen corresponding path program 1 times [2021-11-19 04:20:53,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:20:53,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1871698391] [2021-11-19 04:20:53,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:20:53,418 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:20:53,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:20:53,425 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:20:53,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 04:20:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:53,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 04:20:53,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:20:53,768 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 04:20:53,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:20:53,807 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 04:20:53,808 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:20:53,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1871698391] [2021-11-19 04:20:53,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1871698391] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:20:53,809 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:20:53,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 04:20:53,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415655651] [2021-11-19 04:20:53,812 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:20:53,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 04:20:53,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:20:53,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 04:20:53,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 04:20:53,849 INFO L87 Difference]: Start difference. First operand has 1659 states, 789 states have (on average 2.280101394169835) internal successors, (1799), 1644 states have internal predecessors, (1799), 19 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:20:54,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:20:54,024 INFO L93 Difference]: Finished difference Result 1641 states and 1734 transitions. [2021-11-19 04:20:54,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 04:20:54,026 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-19 04:20:54,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:20:54,083 INFO L225 Difference]: With dead ends: 1641 [2021-11-19 04:20:54,083 INFO L226 Difference]: Without dead ends: 1638 [2021-11-19 04:20:54,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 04:20:54,095 INFO L933 BasicCegarLoop]: 1734 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1734 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:20:54,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1734 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:20:54,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2021-11-19 04:20:54,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 1638. [2021-11-19 04:20:54,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1638 states, 780 states have (on average 2.1717948717948716) internal successors, (1694), 1624 states have internal predecessors, (1694), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-19 04:20:54,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 1731 transitions. [2021-11-19 04:20:54,272 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 1731 transitions. Word has length 9 [2021-11-19 04:20:54,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:20:54,273 INFO L470 AbstractCegarLoop]: Abstraction has 1638 states and 1731 transitions. [2021-11-19 04:20:54,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:20:54,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 1731 transitions. [2021-11-19 04:20:54,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 04:20:54,275 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:20:54,275 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:20:54,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 04:20:54,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:20:54,487 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 04:20:54,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:20:54,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1062938552, now seen corresponding path program 1 times [2021-11-19 04:20:54,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:20:54,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1623528133] [2021-11-19 04:20:54,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:20:54,489 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:20:54,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:20:54,490 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:20:54,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 04:20:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:54,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:20:54,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:20:54,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 04:20:54,821 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 04:20:54,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:20:54,862 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 04:20:54,863 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:20:54,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1623528133] [2021-11-19 04:20:54,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1623528133] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:20:54,869 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:20:54,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 04:20:54,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638781169] [2021-11-19 04:20:54,870 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:20:54,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:20:54,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:20:54,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:20:54,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:20:54,872 INFO L87 Difference]: Start difference. First operand 1638 states and 1731 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:20:58,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:20:58,636 INFO L93 Difference]: Finished difference Result 1675 states and 1781 transitions. [2021-11-19 04:20:58,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:20:58,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-19 04:20:58,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:20:58,651 INFO L225 Difference]: With dead ends: 1675 [2021-11-19 04:20:58,652 INFO L226 Difference]: Without dead ends: 1675 [2021-11-19 04:20:58,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:20:58,659 INFO L933 BasicCegarLoop]: 1003 mSDtfsCounter, 1137 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-19 04:20:58,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1144 Valid, 1345 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-19 04:20:58,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2021-11-19 04:20:58,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 1621. [2021-11-19 04:20:58,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1621 states, 856 states have (on average 2.02803738317757) internal successors, (1736), 1607 states have internal predecessors, (1736), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-19 04:20:58,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1621 states to 1621 states and 1773 transitions. [2021-11-19 04:20:58,724 INFO L78 Accepts]: Start accepts. Automaton has 1621 states and 1773 transitions. Word has length 9 [2021-11-19 04:20:58,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:20:58,725 INFO L470 AbstractCegarLoop]: Abstraction has 1621 states and 1773 transitions. [2021-11-19 04:20:58,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:20:58,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1621 states and 1773 transitions. [2021-11-19 04:20:58,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 04:20:58,726 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:20:58,726 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:20:58,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 04:20:58,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:20:58,950 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 04:20:58,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:20:58,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1062938553, now seen corresponding path program 1 times [2021-11-19 04:20:58,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:20:58,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1720499536] [2021-11-19 04:20:58,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:20:58,952 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:20:58,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:20:58,953 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:20:58,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 04:20:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:59,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:20:59,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:20:59,217 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 04:20:59,251 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 04:20:59,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:20:59,363 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 04:20:59,363 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:20:59,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1720499536] [2021-11-19 04:20:59,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1720499536] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:20:59,364 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:20:59,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 04:20:59,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101274844] [2021-11-19 04:20:59,364 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:20:59,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:20:59,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:20:59,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:20:59,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:20:59,365 INFO L87 Difference]: Start difference. First operand 1621 states and 1773 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:21:09,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:21:09,217 INFO L93 Difference]: Finished difference Result 1975 states and 2148 transitions. [2021-11-19 04:21:09,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:21:09,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-19 04:21:09,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:21:09,238 INFO L225 Difference]: With dead ends: 1975 [2021-11-19 04:21:09,242 INFO L226 Difference]: Without dead ends: 1975 [2021-11-19 04:21:09,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:21:09,244 INFO L933 BasicCegarLoop]: 1334 mSDtfsCounter, 593 mSDsluCounter, 1359 mSDsCounter, 0 mSdLazyCounter, 1796 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 2693 SdHoareTripleChecker+Invalid, 1824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-11-19 04:21:09,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [596 Valid, 2693 Invalid, 1824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1796 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2021-11-19 04:21:09,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2021-11-19 04:21:09,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1777. [2021-11-19 04:21:09,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1022 states have (on average 1.9980430528375734) internal successors, (2042), 1763 states have internal predecessors, (2042), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-19 04:21:09,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 2079 transitions. [2021-11-19 04:21:09,312 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 2079 transitions. Word has length 9 [2021-11-19 04:21:09,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:21:09,313 INFO L470 AbstractCegarLoop]: Abstraction has 1777 states and 2079 transitions. [2021-11-19 04:21:09,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:21:09,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 2079 transitions. [2021-11-19 04:21:09,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 04:21:09,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:21:09,321 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:21:09,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 04:21:09,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:21:09,541 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr640REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 04:21:09,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:21:09,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1406955853, now seen corresponding path program 1 times [2021-11-19 04:21:09,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:21:09,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [963462910] [2021-11-19 04:21:09,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:21:09,543 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:21:09,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:21:09,544 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:21:09,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 04:21:09,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:21:09,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:21:09,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:21:09,782 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 04:21:09,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:21:09,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:21:09,826 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:21:09,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [963462910] [2021-11-19 04:21:09,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [963462910] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:21:09,835 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:21:09,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 04:21:09,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375591616] [2021-11-19 04:21:09,836 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:21:09,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:21:09,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:21:09,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:21:09,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:21:09,840 INFO L87 Difference]: Start difference. First operand 1777 states and 2079 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:21:10,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:21:10,009 INFO L93 Difference]: Finished difference Result 3122 states and 3687 transitions. [2021-11-19 04:21:10,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:21:10,010 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-11-19 04:21:10,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:21:10,031 INFO L225 Difference]: With dead ends: 3122 [2021-11-19 04:21:10,032 INFO L226 Difference]: Without dead ends: 3122 [2021-11-19 04:21:10,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:21:10,035 INFO L933 BasicCegarLoop]: 1630 mSDtfsCounter, 2286 mSDsluCounter, 2092 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2298 SdHoareTripleChecker+Valid, 3722 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:21:10,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2298 Valid, 3722 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:21:10,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2021-11-19 04:21:10,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 2593. [2021-11-19 04:21:10,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2593 states, 1838 states have (on average 1.9793253536452666) internal successors, (3638), 2573 states have internal predecessors, (3638), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 04:21:10,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2593 states to 2593 states and 3687 transitions. [2021-11-19 04:21:10,145 INFO L78 Accepts]: Start accepts. Automaton has 2593 states and 3687 transitions. Word has length 10 [2021-11-19 04:21:10,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:21:10,146 INFO L470 AbstractCegarLoop]: Abstraction has 2593 states and 3687 transitions. [2021-11-19 04:21:10,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:21:10,146 INFO L276 IsEmpty]: Start isEmpty. Operand 2593 states and 3687 transitions. [2021-11-19 04:21:10,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 04:21:10,147 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:21:10,147 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:21:10,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 04:21:10,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:21:10,367 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr4REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 04:21:10,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:21:10,369 INFO L85 PathProgramCache]: Analyzing trace with hash -429534590, now seen corresponding path program 1 times [2021-11-19 04:21:10,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:21:10,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045829344] [2021-11-19 04:21:10,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:21:10,370 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:21:10,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:21:10,371 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:21:10,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 04:21:10,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:21:10,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:21:10,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:21:10,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:21:10,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:21:10,758 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 04:21:10,759 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:21:10,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045829344] [2021-11-19 04:21:10,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045829344] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:21:10,759 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:21:10,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 04:21:10,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514544595] [2021-11-19 04:21:10,760 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:21:10,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:21:10,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:21:10,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:21:10,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:21:10,762 INFO L87 Difference]: Start difference. First operand 2593 states and 3687 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:21:10,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:21:10,847 INFO L93 Difference]: Finished difference Result 2533 states and 3601 transitions. [2021-11-19 04:21:10,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:21:10,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-19 04:21:10,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:21:10,869 INFO L225 Difference]: With dead ends: 2533 [2021-11-19 04:21:10,869 INFO L226 Difference]: Without dead ends: 2533 [2021-11-19 04:21:10,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:21:10,871 INFO L933 BasicCegarLoop]: 1580 mSDtfsCounter, 3022 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3029 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:21:10,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3029 Valid, 1652 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:21:10,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2533 states. [2021-11-19 04:21:10,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2533 to 2533. [2021-11-19 04:21:10,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2533 states, 1802 states have (on average 1.9711431742508325) internal successors, (3552), 2513 states have internal predecessors, (3552), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 04:21:10,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2533 states to 2533 states and 3601 transitions. [2021-11-19 04:21:10,987 INFO L78 Accepts]: Start accepts. Automaton has 2533 states and 3601 transitions. Word has length 15 [2021-11-19 04:21:10,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:21:10,987 INFO L470 AbstractCegarLoop]: Abstraction has 2533 states and 3601 transitions. [2021-11-19 04:21:10,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:21:10,988 INFO L276 IsEmpty]: Start isEmpty. Operand 2533 states and 3601 transitions. [2021-11-19 04:21:10,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 04:21:10,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:21:10,989 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 04:21:11,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 04:21:11,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:21:11,203 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr28REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 04:21:11,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:21:11,203 INFO L85 PathProgramCache]: Analyzing trace with hash -465881252, now seen corresponding path program 1 times [2021-11-19 04:21:11,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:21:11,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414880300] [2021-11-19 04:21:11,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:21:11,204 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:21:11,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:21:11,205 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:21:11,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 04:21:11,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:21:11,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:21:11,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:21:11,531 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 04:21:11,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:21:11,578 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 04:21:11,579 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:21:11,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [414880300] [2021-11-19 04:21:11,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [414880300] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:21:11,579 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:21:11,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 04:21:11,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321259264] [2021-11-19 04:21:11,580 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:21:11,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:21:11,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:21:11,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:21:11,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:21:11,581 INFO L87 Difference]: Start difference. First operand 2533 states and 3601 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:21:11,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:21:11,695 INFO L93 Difference]: Finished difference Result 2505 states and 3545 transitions. [2021-11-19 04:21:11,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:21:11,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-19 04:21:11,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:21:11,714 INFO L225 Difference]: With dead ends: 2505 [2021-11-19 04:21:11,714 INFO L226 Difference]: Without dead ends: 2505 [2021-11-19 04:21:11,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:21:11,715 INFO L933 BasicCegarLoop]: 1535 mSDtfsCounter, 1482 mSDsluCounter, 1673 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 3208 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:21:11,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1489 Valid, 3208 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:21:11,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2505 states. [2021-11-19 04:21:11,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2505 to 2503. [2021-11-19 04:21:11,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2503 states, 1786 states have (on average 1.9563269876819709) internal successors, (3494), 2483 states have internal predecessors, (3494), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 04:21:11,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 3543 transitions. [2021-11-19 04:21:11,797 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 3543 transitions. Word has length 17 [2021-11-19 04:21:11,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:21:11,797 INFO L470 AbstractCegarLoop]: Abstraction has 2503 states and 3543 transitions. [2021-11-19 04:21:11,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:21:11,798 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 3543 transitions. [2021-11-19 04:21:11,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 04:21:11,800 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:21:11,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:21:11,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 04:21:12,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:21:12,021 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr42REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 04:21:12,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:21:12,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1175213898, now seen corresponding path program 1 times [2021-11-19 04:21:12,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:21:12,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11169900] [2021-11-19 04:21:12,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:21:12,022 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:21:12,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:21:12,023 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:21:12,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 04:21:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:21:12,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:21:12,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:21:12,228 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 04:21:12,342 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 04:21:12,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:21:12,492 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 04:21:12,493 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:21:12,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [11169900] [2021-11-19 04:21:12,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [11169900] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:21:12,493 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:21:12,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 04:21:12,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312260681] [2021-11-19 04:21:12,494 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:21:12,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:21:12,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:21:12,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:21:12,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:21:12,495 INFO L87 Difference]: Start difference. First operand 2503 states and 3543 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:21:17,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:21:17,595 INFO L93 Difference]: Finished difference Result 3483 states and 4706 transitions. [2021-11-19 04:21:17,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 04:21:17,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-19 04:21:17,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:21:17,612 INFO L225 Difference]: With dead ends: 3483 [2021-11-19 04:21:17,612 INFO L226 Difference]: Without dead ends: 3483 [2021-11-19 04:21:17,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:21:17,613 INFO L933 BasicCegarLoop]: 956 mSDtfsCounter, 2695 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 1744 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2699 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 1787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:21:17,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2699 Valid, 1947 Invalid, 1787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1744 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-19 04:21:17,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3483 states. [2021-11-19 04:21:17,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3483 to 2499. [2021-11-19 04:21:17,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2499 states, 1786 states have (on average 1.9518477043673013) internal successors, (3486), 2479 states have internal predecessors, (3486), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 04:21:17,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2499 states to 2499 states and 3535 transitions. [2021-11-19 04:21:17,697 INFO L78 Accepts]: Start accepts. Automaton has 2499 states and 3535 transitions. Word has length 31 [2021-11-19 04:21:17,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:21:17,697 INFO L470 AbstractCegarLoop]: Abstraction has 2499 states and 3535 transitions. [2021-11-19 04:21:17,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:21:17,698 INFO L276 IsEmpty]: Start isEmpty. Operand 2499 states and 3535 transitions. [2021-11-19 04:21:17,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 04:21:17,699 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:21:17,700 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:21:17,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 04:21:17,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:21:17,924 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr43REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 04:21:17,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:21:17,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1175213899, now seen corresponding path program 1 times [2021-11-19 04:21:17,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:21:17,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1143219434] [2021-11-19 04:21:17,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:21:17,926 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:21:17,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:21:17,927 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:21:17,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 04:21:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:21:18,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 04:21:18,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:21:18,180 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 04:21:18,478 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 04:21:18,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:21:19,019 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 04:21:19,019 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:21:19,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1143219434] [2021-11-19 04:21:19,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1143219434] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:21:19,019 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:21:19,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 04:21:19,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803554319] [2021-11-19 04:21:19,020 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:21:19,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:21:19,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:21:19,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:21:19,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:21:19,021 INFO L87 Difference]: Start difference. First operand 2499 states and 3535 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:21:33,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:21:33,788 INFO L93 Difference]: Finished difference Result 3129 states and 4080 transitions. [2021-11-19 04:21:33,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 04:21:33,790 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-19 04:21:33,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:21:33,806 INFO L225 Difference]: With dead ends: 3129 [2021-11-19 04:21:33,806 INFO L226 Difference]: Without dead ends: 3129 [2021-11-19 04:21:33,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-19 04:21:33,808 INFO L933 BasicCegarLoop]: 1101 mSDtfsCounter, 1403 mSDsluCounter, 2769 mSDsCounter, 0 mSdLazyCounter, 3411 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 3870 SdHoareTripleChecker+Invalid, 3431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 3411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2021-11-19 04:21:33,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1404 Valid, 3870 Invalid, 3431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 3411 Invalid, 0 Unknown, 0 Unchecked, 14.5s Time] [2021-11-19 04:21:33,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2021-11-19 04:21:33,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 2495. [2021-11-19 04:21:33,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2495 states, 1786 states have (on average 1.9473684210526316) internal successors, (3478), 2475 states have internal predecessors, (3478), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 04:21:33,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2495 states to 2495 states and 3527 transitions. [2021-11-19 04:21:33,871 INFO L78 Accepts]: Start accepts. Automaton has 2495 states and 3527 transitions. Word has length 31 [2021-11-19 04:21:33,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:21:33,871 INFO L470 AbstractCegarLoop]: Abstraction has 2495 states and 3527 transitions. [2021-11-19 04:21:33,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:21:33,872 INFO L276 IsEmpty]: Start isEmpty. Operand 2495 states and 3527 transitions. [2021-11-19 04:21:33,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-19 04:21:33,874 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:21:33,874 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:21:33,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 04:21:34,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:21:34,088 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 04:21:34,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:21:34,089 INFO L85 PathProgramCache]: Analyzing trace with hash -415918152, now seen corresponding path program 1 times [2021-11-19 04:21:34,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:21:34,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [541678742] [2021-11-19 04:21:34,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:21:34,090 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:21:34,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:21:34,093 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:21:34,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 04:21:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:21:34,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:21:34,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:21:34,566 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 04:21:34,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:21:34,719 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 04:21:34,719 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:21:34,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [541678742] [2021-11-19 04:21:34,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [541678742] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:21:34,720 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:21:34,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 04:21:34,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380389692] [2021-11-19 04:21:34,720 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:21:34,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:21:34,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:21:34,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:21:34,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:21:34,721 INFO L87 Difference]: Start difference. First operand 2495 states and 3527 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:21:34,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:21:34,803 INFO L93 Difference]: Finished difference Result 2483 states and 3507 transitions. [2021-11-19 04:21:34,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:21:34,804 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2021-11-19 04:21:34,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:21:34,822 INFO L225 Difference]: With dead ends: 2483 [2021-11-19 04:21:34,822 INFO L226 Difference]: Without dead ends: 2483 [2021-11-19 04:21:34,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:21:34,826 INFO L933 BasicCegarLoop]: 1529 mSDtfsCounter, 1458 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1465 SdHoareTripleChecker+Valid, 3114 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:21:34,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1465 Valid, 3114 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:21:34,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2483 states. [2021-11-19 04:21:34,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2483 to 2483. [2021-11-19 04:21:34,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2483 states, 1774 states have (on average 1.9492671927846674) internal successors, (3458), 2463 states have internal predecessors, (3458), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 04:21:34,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2483 states to 2483 states and 3507 transitions. [2021-11-19 04:21:34,911 INFO L78 Accepts]: Start accepts. Automaton has 2483 states and 3507 transitions. Word has length 46 [2021-11-19 04:21:34,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:21:34,911 INFO L470 AbstractCegarLoop]: Abstraction has 2483 states and 3507 transitions. [2021-11-19 04:21:34,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:21:34,912 INFO L276 IsEmpty]: Start isEmpty. Operand 2483 states and 3507 transitions. [2021-11-19 04:21:34,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-19 04:21:34,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:21:34,921 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:21:34,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 04:21:35,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:21:35,135 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 04:21:35,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:21:35,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1705163028, now seen corresponding path program 1 times [2021-11-19 04:21:35,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:21:35,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1403832076] [2021-11-19 04:21:35,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:21:35,137 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:21:35,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:21:35,139 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:21:35,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 04:21:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:21:35,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:21:35,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:21:35,957 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 04:21:35,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:21:36,417 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 04:21:36,418 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:21:36,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1403832076] [2021-11-19 04:21:36,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1403832076] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:21:36,418 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:21:36,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 04:21:36,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041466865] [2021-11-19 04:21:36,419 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:21:36,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:21:36,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:21:36,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:21:36,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:21:36,422 INFO L87 Difference]: Start difference. First operand 2483 states and 3507 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:21:36,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:21:36,770 INFO L93 Difference]: Finished difference Result 2672 states and 3542 transitions. [2021-11-19 04:21:36,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:21:36,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2021-11-19 04:21:36,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:21:36,789 INFO L225 Difference]: With dead ends: 2672 [2021-11-19 04:21:36,789 INFO L226 Difference]: Without dead ends: 2672 [2021-11-19 04:21:36,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:21:36,790 INFO L933 BasicCegarLoop]: 1607 mSDtfsCounter, 455 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 3010 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 04:21:36,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [457 Valid, 3010 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 04:21:36,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2672 states. [2021-11-19 04:21:36,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2672 to 2299. [2021-11-19 04:21:36,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2299 states, 1590 states have (on average 1.951572327044025) internal successors, (3103), 2279 states have internal predecessors, (3103), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 04:21:36,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 3152 transitions. [2021-11-19 04:21:36,846 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 3152 transitions. Word has length 54 [2021-11-19 04:21:36,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:21:36,847 INFO L470 AbstractCegarLoop]: Abstraction has 2299 states and 3152 transitions. [2021-11-19 04:21:36,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:21:36,848 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 3152 transitions. [2021-11-19 04:21:36,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-19 04:21:36,849 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:21:36,849 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:21:36,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 04:21:37,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:21:37,065 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr61REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 04:21:37,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:21:37,066 INFO L85 PathProgramCache]: Analyzing trace with hash -2040932875, now seen corresponding path program 1 times [2021-11-19 04:21:37,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:21:37,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741141150] [2021-11-19 04:21:37,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:21:37,067 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:21:37,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:21:37,070 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:21:37,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 04:21:37,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:21:37,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 04:21:37,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:21:37,662 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 04:21:37,673 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 04:21:38,462 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 04:21:38,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2021-11-19 04:21:38,476 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 04:21:38,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 21 [2021-11-19 04:21:38,526 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 04:21:38,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:21:45,836 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 04:21:45,837 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:21:45,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741141150] [2021-11-19 04:21:45,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741141150] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:21:45,837 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:21:45,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 04:21:45,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079640822] [2021-11-19 04:21:45,838 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:21:45,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:21:45,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:21:45,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:21:45,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-19 04:21:45,840 INFO L87 Difference]: Start difference. First operand 2299 states and 3152 transitions. Second operand has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:21:56,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:21:56,927 INFO L93 Difference]: Finished difference Result 3005 states and 3792 transitions. [2021-11-19 04:21:56,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 04:21:56,928 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2021-11-19 04:21:56,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:21:56,945 INFO L225 Difference]: With dead ends: 3005 [2021-11-19 04:21:56,945 INFO L226 Difference]: Without dead ends: 3005 [2021-11-19 04:21:56,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-19 04:21:56,947 INFO L933 BasicCegarLoop]: 1102 mSDtfsCounter, 1855 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 1797 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1862 SdHoareTripleChecker+Valid, 2341 SdHoareTripleChecker+Invalid, 3606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1710 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:21:56,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1862 Valid, 2341 Invalid, 3606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1797 Invalid, 0 Unknown, 1710 Unchecked, 11.0s Time] [2021-11-19 04:21:56,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2021-11-19 04:21:57,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 2394. [2021-11-19 04:21:57,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2394 states, 1717 states have (on average 1.9056493884682586) internal successors, (3272), 2371 states have internal predecessors, (3272), 28 states have call successors, (28), 5 states have call predecessors, (28), 4 states have return successors, (27), 18 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-19 04:21:57,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2394 states to 2394 states and 3327 transitions. [2021-11-19 04:21:57,016 INFO L78 Accepts]: Start accepts. Automaton has 2394 states and 3327 transitions. Word has length 57 [2021-11-19 04:21:57,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:21:57,017 INFO L470 AbstractCegarLoop]: Abstraction has 2394 states and 3327 transitions. [2021-11-19 04:21:57,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:21:57,018 INFO L276 IsEmpty]: Start isEmpty. Operand 2394 states and 3327 transitions. [2021-11-19 04:21:57,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-19 04:21:57,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:21:57,019 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:21:57,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 04:21:57,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:21:57,237 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr63REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 04:21:57,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:21:57,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1463571990, now seen corresponding path program 1 times [2021-11-19 04:21:57,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:21:57,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1130023591] [2021-11-19 04:21:57,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:21:57,239 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:21:57,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:21:57,241 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:21:57,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 04:21:57,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:21:57,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:21:57,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:21:57,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:21:57,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:21:57,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-19 04:21:58,296 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 04:21:58,297 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:21:58,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1130023591] [2021-11-19 04:21:58,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1130023591] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:21:58,297 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:21:58,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 04:21:58,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045798948] [2021-11-19 04:21:58,297 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:21:58,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:21:58,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:21:58,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:21:58,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:21:58,298 INFO L87 Difference]: Start difference. First operand 2394 states and 3327 transitions. Second operand has 6 states, 5 states have (on average 21.8) internal successors, (109), 6 states have internal predecessors, (109), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:22:01,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:22:01,144 INFO L93 Difference]: Finished difference Result 2392 states and 3323 transitions. [2021-11-19 04:22:01,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:22:01,145 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.8) internal successors, (109), 6 states have internal predecessors, (109), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2021-11-19 04:22:01,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:22:01,173 INFO L225 Difference]: With dead ends: 2392 [2021-11-19 04:22:01,173 INFO L226 Difference]: Without dead ends: 2392 [2021-11-19 04:22:01,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:22:01,174 INFO L933 BasicCegarLoop]: 968 mSDtfsCounter, 2930 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2936 SdHoareTripleChecker+Valid, 1886 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-19 04:22:01,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2936 Valid, 1886 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-19 04:22:01,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2392 states. [2021-11-19 04:22:01,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2392 to 2392. [2021-11-19 04:22:01,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2392 states, 1717 states have (on average 1.9033197437390799) internal successors, (3268), 2369 states have internal predecessors, (3268), 28 states have call successors, (28), 5 states have call predecessors, (28), 4 states have return successors, (27), 18 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-19 04:22:01,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2392 states to 2392 states and 3323 transitions. [2021-11-19 04:22:01,223 INFO L78 Accepts]: Start accepts. Automaton has 2392 states and 3323 transitions. Word has length 59 [2021-11-19 04:22:01,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:22:01,223 INFO L470 AbstractCegarLoop]: Abstraction has 2392 states and 3323 transitions. [2021-11-19 04:22:01,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.8) internal successors, (109), 6 states have internal predecessors, (109), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:22:01,225 INFO L276 IsEmpty]: Start isEmpty. Operand 2392 states and 3323 transitions. [2021-11-19 04:22:01,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-19 04:22:01,226 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:22:01,226 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:22:01,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 04:22:01,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:22:01,442 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr66REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 04:22:01,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:22:01,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1234498241, now seen corresponding path program 1 times [2021-11-19 04:22:01,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:22:01,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032218353] [2021-11-19 04:22:01,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:22:01,444 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:22:01,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:22:01,446 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:22:01,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 04:22:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:22:01,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 04:22:01,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:22:01,958 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 04:22:01,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-19 04:22:02,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-19 04:22:02,034 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 04:22:02,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:22:02,187 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 04:22:02,188 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:22:02,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032218353] [2021-11-19 04:22:02,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1032218353] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:22:02,188 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:22:02,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 04:22:02,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565067772] [2021-11-19 04:22:02,189 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:22:02,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:22:02,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:22:02,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:22:02,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:22:02,191 INFO L87 Difference]: Start difference. First operand 2392 states and 3323 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:22:07,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:22:07,833 INFO L93 Difference]: Finished difference Result 2391 states and 3321 transitions. [2021-11-19 04:22:07,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:22:07,833 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-19 04:22:07,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:22:07,841 INFO L225 Difference]: With dead ends: 2391 [2021-11-19 04:22:07,842 INFO L226 Difference]: Without dead ends: 2391 [2021-11-19 04:22:07,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:22:07,843 INFO L933 BasicCegarLoop]: 1499 mSDtfsCounter, 4 mSDsluCounter, 2311 mSDsCounter, 0 mSdLazyCounter, 2191 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3810 SdHoareTripleChecker+Invalid, 2192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-19 04:22:07,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 3810 Invalid, 2192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2191 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2021-11-19 04:22:07,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2391 states. [2021-11-19 04:22:07,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2391 to 2391. [2021-11-19 04:22:07,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2391 states, 1717 states have (on average 1.9021549213744904) internal successors, (3266), 2368 states have internal predecessors, (3266), 28 states have call successors, (28), 5 states have call predecessors, (28), 4 states have return successors, (27), 18 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-19 04:22:07,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2391 states to 2391 states and 3321 transitions. [2021-11-19 04:22:07,888 INFO L78 Accepts]: Start accepts. Automaton has 2391 states and 3321 transitions. Word has length 62 [2021-11-19 04:22:07,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:22:07,889 INFO L470 AbstractCegarLoop]: Abstraction has 2391 states and 3321 transitions. [2021-11-19 04:22:07,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:22:07,889 INFO L276 IsEmpty]: Start isEmpty. Operand 2391 states and 3321 transitions. [2021-11-19 04:22:07,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-19 04:22:07,890 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:22:07,890 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:22:07,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 04:22:08,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:22:08,106 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr67REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 04:22:08,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:22:08,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1234498240, now seen corresponding path program 1 times [2021-11-19 04:22:08,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:22:08,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [677329463] [2021-11-19 04:22:08,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:22:08,108 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:22:08,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:22:08,109 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:22:08,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 04:22:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:22:08,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 04:22:08,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:22:08,575 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 04:22:08,616 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 04:22:08,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-19 04:22:08,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-19 04:22:08,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-19 04:22:08,741 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 04:22:08,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:22:09,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:09,122 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:22:09,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [677329463] [2021-11-19 04:22:09,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [677329463] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:22:09,123 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:22:09,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 04:22:09,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815820169] [2021-11-19 04:22:09,123 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:22:09,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 04:22:09,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:22:09,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 04:22:09,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:22:09,124 INFO L87 Difference]: Start difference. First operand 2391 states and 3321 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:22:27,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:22:27,661 INFO L93 Difference]: Finished difference Result 2390 states and 3319 transitions. [2021-11-19 04:22:27,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:22:27,662 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-19 04:22:27,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:22:27,668 INFO L225 Difference]: With dead ends: 2390 [2021-11-19 04:22:27,668 INFO L226 Difference]: Without dead ends: 2390 [2021-11-19 04:22:27,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 04:22:27,669 INFO L933 BasicCegarLoop]: 1499 mSDtfsCounter, 2 mSDsluCounter, 3761 mSDsCounter, 0 mSdLazyCounter, 3736 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5260 SdHoareTripleChecker+Invalid, 3738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2021-11-19 04:22:27,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 5260 Invalid, 3738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3736 Invalid, 0 Unknown, 0 Unchecked, 18.4s Time] [2021-11-19 04:22:27,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states. [2021-11-19 04:22:27,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2390 to 2390. [2021-11-19 04:22:27,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2390 states, 1715 states have (on average 1.9032069970845482) internal successors, (3264), 2367 states have internal predecessors, (3264), 28 states have call successors, (28), 5 states have call predecessors, (28), 4 states have return successors, (27), 18 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-19 04:22:27,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2390 states to 2390 states and 3319 transitions. [2021-11-19 04:22:27,707 INFO L78 Accepts]: Start accepts. Automaton has 2390 states and 3319 transitions. Word has length 62 [2021-11-19 04:22:27,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:22:27,708 INFO L470 AbstractCegarLoop]: Abstraction has 2390 states and 3319 transitions. [2021-11-19 04:22:27,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:22:27,708 INFO L276 IsEmpty]: Start isEmpty. Operand 2390 states and 3319 transitions. [2021-11-19 04:22:27,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-19 04:22:27,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:22:27,709 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:22:27,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 04:22:27,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:22:27,925 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 04:22:27,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:22:27,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1329357862, now seen corresponding path program 1 times [2021-11-19 04:22:27,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:22:27,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1797186383] [2021-11-19 04:22:27,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:22:27,927 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:22:27,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:22:27,929 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:22:27,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 04:22:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:22:28,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:22:28,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:22:28,360 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 04:22:28,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:22:28,534 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 04:22:28,534 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:22:28,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1797186383] [2021-11-19 04:22:28,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1797186383] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:22:28,535 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:22:28,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 04:22:28,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681869477] [2021-11-19 04:22:28,535 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:22:28,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:22:28,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:22:28,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:22:28,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:22:28,537 INFO L87 Difference]: Start difference. First operand 2390 states and 3319 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:22:28,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:22:28,681 INFO L93 Difference]: Finished difference Result 2400 states and 3336 transitions. [2021-11-19 04:22:28,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:22:28,683 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 70 [2021-11-19 04:22:28,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:22:28,692 INFO L225 Difference]: With dead ends: 2400 [2021-11-19 04:22:28,692 INFO L226 Difference]: Without dead ends: 2400 [2021-11-19 04:22:28,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:22:28,694 INFO L933 BasicCegarLoop]: 1497 mSDtfsCounter, 11 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2994 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:22:28,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 2994 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:22:28,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2400 states. [2021-11-19 04:22:28,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2400 to 2400. [2021-11-19 04:22:28,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2400 states, 1723 states have (on average 1.901334881021474) internal successors, (3276), 2376 states have internal predecessors, (3276), 28 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (32), 18 states have call predecessors, (32), 27 states have call successors, (32) [2021-11-19 04:22:28,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2400 states to 2400 states and 3336 transitions. [2021-11-19 04:22:28,762 INFO L78 Accepts]: Start accepts. Automaton has 2400 states and 3336 transitions. Word has length 70 [2021-11-19 04:22:28,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:22:28,762 INFO L470 AbstractCegarLoop]: Abstraction has 2400 states and 3336 transitions. [2021-11-19 04:22:28,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:22:28,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2400 states and 3336 transitions. [2021-11-19 04:22:28,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-19 04:22:28,764 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:22:28,764 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:22:28,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 04:22:28,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:22:28,981 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 04:22:28,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:22:28,982 INFO L85 PathProgramCache]: Analyzing trace with hash 460494822, now seen corresponding path program 1 times [2021-11-19 04:22:28,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:22:28,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20293384] [2021-11-19 04:22:28,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:22:28,983 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:22:28,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:22:28,984 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:22:29,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 04:22:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:22:29,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 04:22:29,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:22:29,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:29,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:22:29,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:29,766 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:22:29,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20293384] [2021-11-19 04:22:29,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20293384] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:22:29,766 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 04:22:29,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-19 04:22:29,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241425751] [2021-11-19 04:22:29,766 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 04:22:29,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 04:22:29,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:22:29,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 04:22:29,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-19 04:22:29,768 INFO L87 Difference]: Start difference. First operand 2400 states and 3336 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:22:30,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:22:30,330 INFO L93 Difference]: Finished difference Result 2414 states and 3362 transitions. [2021-11-19 04:22:30,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 04:22:30,331 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 72 [2021-11-19 04:22:30,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:22:30,339 INFO L225 Difference]: With dead ends: 2414 [2021-11-19 04:22:30,339 INFO L226 Difference]: Without dead ends: 2410 [2021-11-19 04:22:30,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-19 04:22:30,340 INFO L933 BasicCegarLoop]: 1499 mSDtfsCounter, 29 mSDsluCounter, 4485 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 5984 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 04:22:30,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 5984 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 04:22:30,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2410 states. [2021-11-19 04:22:30,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2410 to 2406. [2021-11-19 04:22:30,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2406 states, 1729 states have (on average 1.8993637941006363) internal successors, (3284), 2382 states have internal predecessors, (3284), 28 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (32), 18 states have call predecessors, (32), 27 states have call successors, (32) [2021-11-19 04:22:30,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2406 states to 2406 states and 3344 transitions. [2021-11-19 04:22:30,429 INFO L78 Accepts]: Start accepts. Automaton has 2406 states and 3344 transitions. Word has length 72 [2021-11-19 04:22:30,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:22:30,430 INFO L470 AbstractCegarLoop]: Abstraction has 2406 states and 3344 transitions. [2021-11-19 04:22:30,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:22:30,430 INFO L276 IsEmpty]: Start isEmpty. Operand 2406 states and 3344 transitions. [2021-11-19 04:22:30,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-19 04:22:30,437 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:22:30,437 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:22:30,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 04:22:30,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:22:30,660 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 04:22:30,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:22:30,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1298214758, now seen corresponding path program 2 times [2021-11-19 04:22:30,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:22:30,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1847573086] [2021-11-19 04:22:30,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 04:22:30,661 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:22:30,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:22:30,664 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:22:30,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 04:22:31,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 04:22:31,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:22:31,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 04:22:31,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:22:31,417 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:31,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:22:32,155 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:32,155 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:22:32,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1847573086] [2021-11-19 04:22:32,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1847573086] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:22:32,156 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 04:22:32,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-19 04:22:32,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660841341] [2021-11-19 04:22:32,157 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 04:22:32,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 04:22:32,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:22:32,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 04:22:32,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-19 04:22:32,159 INFO L87 Difference]: Start difference. First operand 2406 states and 3344 transitions. Second operand has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:22:34,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:22:34,170 INFO L93 Difference]: Finished difference Result 2434 states and 3406 transitions. [2021-11-19 04:22:34,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-19 04:22:34,171 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 76 [2021-11-19 04:22:34,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:22:34,178 INFO L225 Difference]: With dead ends: 2434 [2021-11-19 04:22:34,178 INFO L226 Difference]: Without dead ends: 2430 [2021-11-19 04:22:34,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-19 04:22:34,180 INFO L933 BasicCegarLoop]: 1503 mSDtfsCounter, 66 mSDsluCounter, 11979 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 13482 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 04:22:34,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 13482 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 04:22:34,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2430 states. [2021-11-19 04:22:34,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2430 to 2418. [2021-11-19 04:22:34,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 1741 states have (on average 1.8954623779437105) internal successors, (3300), 2394 states have internal predecessors, (3300), 28 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (32), 18 states have call predecessors, (32), 27 states have call successors, (32) [2021-11-19 04:22:34,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 3360 transitions. [2021-11-19 04:22:34,236 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 3360 transitions. Word has length 76 [2021-11-19 04:22:34,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:22:34,237 INFO L470 AbstractCegarLoop]: Abstraction has 2418 states and 3360 transitions. [2021-11-19 04:22:34,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:22:34,238 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 3360 transitions. [2021-11-19 04:22:34,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-19 04:22:34,239 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:22:34,239 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:22:34,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 04:22:34,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:22:34,462 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 04:22:34,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:22:34,463 INFO L85 PathProgramCache]: Analyzing trace with hash 316087910, now seen corresponding path program 3 times [2021-11-19 04:22:34,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:22:34,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276487664] [2021-11-19 04:22:34,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 04:22:34,464 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:22:34,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:22:34,465 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:22:34,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 04:22:35,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-19 04:22:35,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:22:35,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 04:22:35,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:22:35,958 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:35,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:22:38,079 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:38,079 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:22:38,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276487664] [2021-11-19 04:22:38,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1276487664] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:22:38,080 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 04:22:38,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-19 04:22:38,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106398940] [2021-11-19 04:22:38,081 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 04:22:38,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-19 04:22:38,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:22:38,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-19 04:22:38,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-19 04:22:38,084 INFO L87 Difference]: Start difference. First operand 2418 states and 3360 transitions. Second operand has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:22:48,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:22:48,818 INFO L93 Difference]: Finished difference Result 2474 states and 3524 transitions. [2021-11-19 04:22:48,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-19 04:22:48,819 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 84 [2021-11-19 04:22:48,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:22:48,825 INFO L225 Difference]: With dead ends: 2474 [2021-11-19 04:22:48,826 INFO L226 Difference]: Without dead ends: 2468 [2021-11-19 04:22:48,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-19 04:22:48,829 INFO L933 BasicCegarLoop]: 1509 mSDtfsCounter, 230 mSDsluCounter, 22559 mSDsCounter, 0 mSdLazyCounter, 1601 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 24068 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-19 04:22:48,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 24068 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1601 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-19 04:22:48,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2468 states. [2021-11-19 04:22:48,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2468 to 2442. [2021-11-19 04:22:48,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2442 states, 1765 states have (on average 1.8872521246458924) internal successors, (3331), 2418 states have internal predecessors, (3331), 28 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (32), 18 states have call predecessors, (32), 27 states have call successors, (32) [2021-11-19 04:22:48,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2442 states to 2442 states and 3391 transitions. [2021-11-19 04:22:48,889 INFO L78 Accepts]: Start accepts. Automaton has 2442 states and 3391 transitions. Word has length 84 [2021-11-19 04:22:48,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:22:48,889 INFO L470 AbstractCegarLoop]: Abstraction has 2442 states and 3391 transitions. [2021-11-19 04:22:48,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:22:48,890 INFO L276 IsEmpty]: Start isEmpty. Operand 2442 states and 3391 transitions. [2021-11-19 04:22:48,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-19 04:22:48,891 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:22:48,891 INFO L514 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:22:48,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 04:22:49,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:22:49,106 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 04:22:49,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:22:49,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1218837606, now seen corresponding path program 4 times [2021-11-19 04:22:49,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:22:49,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285495631] [2021-11-19 04:22:49,108 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 04:22:49,108 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:22:49,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:22:49,110 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:22:49,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 04:22:49,642 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 04:22:49,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:22:49,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-19 04:22:49,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:22:51,042 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:51,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:22:55,697 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:22:55,697 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:22:55,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285495631] [2021-11-19 04:22:55,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285495631] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:22:55,697 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 04:22:55,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-19 04:22:55,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726651194] [2021-11-19 04:22:55,698 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 04:22:55,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-19 04:22:55,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:22:55,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-19 04:22:55,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-19 04:22:55,702 INFO L87 Difference]: Start difference. First operand 2442 states and 3391 transitions. Second operand has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:23:14,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:23:14,734 INFO L93 Difference]: Finished difference Result 2534 states and 3627 transitions. [2021-11-19 04:23:14,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-19 04:23:14,735 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 100 [2021-11-19 04:23:14,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:23:14,743 INFO L225 Difference]: With dead ends: 2534 [2021-11-19 04:23:14,743 INFO L226 Difference]: Without dead ends: 2530 [2021-11-19 04:23:14,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-19 04:23:14,754 INFO L933 BasicCegarLoop]: 1526 mSDtfsCounter, 322 mSDsluCounter, 47155 mSDsCounter, 0 mSdLazyCounter, 5029 mSolverCounterSat, 504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 48681 SdHoareTripleChecker+Invalid, 5533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 504 IncrementalHoareTripleChecker+Valid, 5029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2021-11-19 04:23:14,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 48681 Invalid, 5533 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [504 Valid, 5029 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2021-11-19 04:23:14,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2021-11-19 04:23:14,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 2472. [2021-11-19 04:23:14,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2472 states, 1795 states have (on average 1.8813370473537605) internal successors, (3377), 2448 states have internal predecessors, (3377), 28 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (32), 18 states have call predecessors, (32), 27 states have call successors, (32) [2021-11-19 04:23:14,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2472 states to 2472 states and 3437 transitions. [2021-11-19 04:23:14,822 INFO L78 Accepts]: Start accepts. Automaton has 2472 states and 3437 transitions. Word has length 100 [2021-11-19 04:23:14,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:23:14,823 INFO L470 AbstractCegarLoop]: Abstraction has 2472 states and 3437 transitions. [2021-11-19 04:23:14,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:23:14,824 INFO L276 IsEmpty]: Start isEmpty. Operand 2472 states and 3437 transitions. [2021-11-19 04:23:14,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 04:23:14,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:23:14,826 INFO L514 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:23:14,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 04:23:15,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:23:15,045 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 04:23:15,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:23:15,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1636743514, now seen corresponding path program 5 times [2021-11-19 04:23:15,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:23:15,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1133449255] [2021-11-19 04:23:15,046 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 04:23:15,047 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:23:15,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:23:15,048 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:23:15,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb07254d-1e39-4320-93a5-2c401887849f/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 04:23:16,431 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-19 04:23:16,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:23:16,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-19 04:23:16,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:23:16,517 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 04:23:16,748 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-19 04:23:16,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-11-19 04:23:16,822 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 26 treesize of output 22 [2021-11-19 04:23:17,057 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 40 treesize of output 28 [2021-11-19 04:30:32,945 WARN L227 SmtUtils]: Spent 5.18s on a formula simplification that was a NOOP. DAG size: 71 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)